List of characters in mythology novels by Rick Riordan

A description of most characters featured in various mythology series by Rick Riordan.
Perseus "Percy" Jackson is a demigod, son of the mortal Sally Jackson and the Greek god of the sea, Poseidon. Percy lives in the Upper East Side of Manhattan but found his life uprooted upon discovering his true paternity. He has black hair and sea-green eyes. He has inherited special abilities from Poseidon, which include the ability to control water (he can control blood and poison to a degree), boats, and ships; to create small hurricanes; to breathe and see clearly underwater, and to talk to horse-like creatures and most aquatic animals. He is also a gifted swordsman using his shape-shifting sword pen named Anaklusmos (Ancient Greek for "Riptide") for battle. The pen was created by Zoë Nightshade and, when uncapped, changes into a celestial bronze sword; later, he discovers his sword is female. If he loses it, it will always appear back in his pocket.
Percy struggles significantly in his mortal life. He, like most demigods, was diagnosed with ADHD and dyslexia. This made him the subject of bullying from his peers. His mother was once married to Gabe Ugliano (Smelly Gabe), an abusive, gambling-addicted alcoholic. His repugnant mortal odor masked Percy's demigod scent, hiding him from monsters. At the end of The Lightning Thief, Sally turned Gabe into stone using Medusa's head. Later, she marries Paul Blofis, whom she genuinely loves, and they have a daughter named Estelle. Percy begins dating Annabeth at the end of The Last Olympian.
Percy is the first-person narrator in the Percy Jackson & the Olympians series. He appears in The Lightning Thief, The Sea of Monsters, The Titan's Curse, The Battle of the Labyrinth, The Last Olympian, The Son of Neptune, The Mark of Athena, The House of Hades, The Blood of Olympus, The Hidden Oracle, The Tower of Nero, The Son of Sobek, The Crown of Ptolemy, The Chalice of the Gods and Wrath of the Triple Goddess.
In the films, Percy Jackson is portrayed by Logan Lerman. In the musical, he is portrayed by Chris McCarrell. Walker Scobell portrays the role in the TV series, with Azriel Dalman playing a younger Percy in flashbacks.
Grover Underwood is a satyr and Percy's best friend. He appears in The Lightning Thief, The Sea of Monsters, The Titan's Curse, The Battle of the Labyrinth, The Last Olympian, The Son of Neptune, The House of Hades, The Blood of Olympus, The Burning Maze, The Chalice of the Gods and Wrath of the Triple Goddess.
He has curly reddish-brown hair and fur, acne, and a wispy goatee. His horns grow larger as the series progresses, and he must take increasingly careful measures to hide them and his goat legs while posing as a human. When we first meet him, he is introduced as walking with crutches, which we eventually learn are to hide his goat-like trot. Also, he seems has a taste for enchiladas. Percy says that Grover, ignoring his crutches, seems to jump around when enchiladas are served at school. In The Lightning Thief, Chiron states that Grover is small even for his age: He is twenty-eight then, but because satyrs mature half the speed of humans, he is considered a teenager. Grover is quite sensitive and attached to nature. Like all satyrs, he can sense emotions and sense monsters and demigods. As the series progresses, his concern for his friends and the pursuit of his goals leads him to take on leadership roles and become more confident. Unlike his demigod friends, Grover is not an orthodox fighter. Instead, he uses reed pipes or a cudgel. In The Battle of the Labyrinth, Grover is bestowed a part of Pan's essence by the Lord of the Wild himself Pan. Grover also begins a relationship with the dryad Juniper.
In The Lightning Thief, he gets a "searcher's license" after delivering Percy safely, allowing him to search for the lost god Pan. When Polyphemus captures him in The Sea of Monsters, he activates an empathy link, a psychic bond with Percy created a year before that allows telepathic communication across great distances. He uses this to guide Percy to his rescue. At the end of The Last Olympian, he is named a Lord of the Wild and given a seat on the satyrs' ruling council, the Council of Cloven Elders.
In The Heroes of Olympus series, Grover mainly appears as one of Camp Half-Blood's satyr allies reporting on Gaea's rising and participating in negotiations with the Romans to get Reyna to help transport the Athena Parthenos statue across the world.
In The Dark Prophecy, Meg McCaffrey summons Grover after getting a prophecy stating that she and Apollo will need a satyr guide. In The Burning Maze, Grover guides the two through the Labyrinth and, alongside the other nature spirits, aids in their fight against Medea and Caligula. After the death of Medea and Helios fading from existence, ending the California wildfires that he was causing, Grover returns to Camp Half-Blood.
In The Chalice of the Gods, taking place between The Heroes of Olympus and The Trials of Apollo, Grover volunteers to join Percy's quests to get recommendation letters from the gods so that he can get into New Rome University. Grover uses his nature spirit connections to help search for Ganymede's chalice of immortality and then to help Percy sneak into Mount Olympus to return it to Ganymede in the midst of Zeus' brunch for his mother Rhea.
In the films, he is portrayed by Brandon T. Jackson and Bjorn Yearwood as young Grover in the second film. In the musical, he is portrayed by George Salazar. Aryan Simhadri portrays Grover in the TV series.
Annabeth Chase is the child of Athena and West Point history professor Frederick Chase. She has an extensive paternal family, including Magnus Chase. She appears in The Lightning Thief, The Sea of Monsters, The Titan's Curse, The Battle of the Labyrinth, The Last Olympian, The Lost Hero, The Demigod Diaries, The Mark of Athena, The House of Hades, The Blood of Olympus, The Chalice of the Gods and Wrath of the Triple Goddess. She is described as having honey-blonde hair and gray eyes. She is described by her teacher Chiron as "territorial about her friends", which is manifested in some moments of jealousy and distrust. In The Lightning Thief, she is also shown as suffering from arachnophobia, a fear shared by her siblings due to their mother's relationship with Arachne, whom Athena turned into a spider. This comes into play in The Mark of Athena.
Annabeth ran away from her father and stepfamily at age seven and encountered Luke Castellan and Thalia Grace. They lived as runaways until they were found by Grover Underwood and taken to Camp Half-Blood. Thalia temporarily perished when they reached Camp Half-Blood. Annabeth remained attached to Luke and convinced of his goodness even after his decision to support Kronos. He was also her first crush. Her attempts to bring Luke back into the fold are an important theme in the books.
At the end of the series, she plans to finish high school in New York and then attend college in New Rome, with her boyfriend, Percy Jackson. In The Hidden Oracle, one of her friends states that Annabeth had gone to Boston for "some family emergency" — searching for her cousin Magnus Chase.
At the end of The Trials of Apollo, Annabeth starts attending New Rome University with Percy after helping him in The Chalice of the Gods to get the godly recommendation letters that Percy needs.
Her main weapon is a short celestial bronze knife given to her by Luke Castellan. In The Last Olympian, it was found to be a cursed blade, which Luke used to eject Kronos from his soul, consequently killing himself. After losing it in The House of Hades, she uses a drakon-bone sword given to her by the giant Damasen in Tartarus. In The Kane Chronicles crossover series, she also uses Sadie Kane's wand when it turns into a dagger similar to the one Luke gave her. Annabeth also owns an invisibility Yankees cap, a gift from her mother. At the end of The Battle of the Labyrinth, Daedalus gives Annabeth his incredibly advanced laptop, which she loses in Tartarus in The Mark of Athena. In the third book of Magnus Chase series, Annabeth wears a UC Berkeley College of Environmental Design shirt, implying that is where she goes to college. Annabeth also has dyslexia and ADHD but is good at keeping it in check.
In the films, she is portrayed by Alexandra Daddario, and Alisha Newton portrays a young Annabeth in the second film. In the American musical, she was portrayed by Kristin Stokes. Leah Jeffries portrays Annabeth in the TV series.
Chiron is a centaur with a white stallion body and a son of Kronos. He is Percy's mentor and the activities director at Camp Half-Blood. He is the mythological Chiron who was granted immortality by the gods for as long as he is needed to train heroes.
In The Lightning Thief, he first appears disguised as a Latin teacher at Percy's school, using an enchanted wheelchair to conceal his horse half. Chiron is shown to suspect Percy's true heritage as a son of Poseidon and gives Percy his sword Riptide. After Percy is poisoned by Luke Castellan, Chiron heals him.
In The Sea of Monsters, due to Thalia's tree being poisoned, Chiron is blamed due to him being a son of Kronos and he is fired from camp. During Percy and Annabeth's quest into the Sea of Monsters for the Golden Fleece, they keep in touch with Chiron. After Percy tricks Luke into exonerating Chiron, Chiron arrives with a group of other centaurs named the "party ponies" to rescue Percy, Annabeth, Grover and Tyson from the Princess Andromeda, and he is present when Thalia is resurrected from her tree by the Golden Fleece.
In The Titan's Curse, Chiron tries to cheer Percy up without success after Annabeth's kidnapping. He has also started to favor Thalia due to her being the more likely prophecy child following her resurrection. Upon realizing that Nico di Angelo is actually the son of Hades, Percy decides to keep it from the centaur.
In The Battle of Labyrinth, Chiron becomes suspicious of the new sword instructor Quintus, who later turns out to be Daedalus in disguise. He also organizes the quest into the Labyrinth and participates in the battle with a monster army invading from the maze. Although Chiron is badly wounded, he survives the fight.
In The Last Olympian, Chiron leaves Percy to lead the army of Camp Half-Blood while he gathers much needed reinforcements in the form of the party ponies. Chiron directly confronts his father Kronos in battle, although he's defeated. After Kronos' defeat, Chiron allows Rachel Elizabeth Dare into Camp Half-Blood to become the new Oracle of Delphi.
In The Lost Hero, Chiron recognizes Jason Grace as a Roman demigod, much to his alarm, but he refuses to tell the Greeks about the Romans due to swearing on the River Styx to keep the secret due to the historic rivalry between the two. With Dionysus having been recalled to Olympus which Zeus has closed off, Chiron is now in charge of camp. He eventually admits the truth about the Greeks and Romans after the quest to rescue Hera and the discovery of Bunker 9, but even Chiron doesn't know where the Roman camp is.
In The Mark of Athena, Percy and Annabeth manage to contact Chiron via a dream to warn him of the Roman legion's upcoming attack on Camp Half-Blood.
In The House of Hades, Leo and Calypso see the centaur in a vision preparing for battle.
In The Blood of Olympus, Chiron participates in the final battle with Gaea and leads a funeral alongside Nico for the campers who fell in the battle, both Greek and Roman. He later has several long conversations with Reyna and Frank Zhang about the newly established alliance between the two camps.
In The Hidden Oracle, six months later, Chiron is still in charge of Camp Half-Blood, and he is dealing with missing campers, down communications and the arrival of a now mortal Apollo. He later participates in the battle with Nero's automaton and gives the resurrected Leo Valdez a kick in the gut—joining the campers who literally line up to hit Leo—for scaring him with his sacrifice to destroy Gaea.
In The Tower of Nero, Chiron is away from camp when Apollo and Meg McCaffrey return months later to face Nero. Chiron returns in time to receive a message from Rachel summoning reinforcements from camp which Chiron personally leads, disguising it as a field trip for the youngest campers. Chiron is implied to have been meeting with Bast and Mimir about some kind of a threat that endangers the Greco-Roman, Egyptian and Norse pantheons, but he refuses to elaborate on what it is.
In The Sun and the Star: A Nico di Angelo Adventure, Chiron is left alone at camp with Dionysus, Nico and Will Solace when the vast majority of the campers decide to return home for the school year. Along with the wine god, Chiron reluctantly authorizes the two demigods to go on a quest to Tartarus to rescue Bob and greets them upon Nico and Will's successful return with the Titan.
In Wrath of the Triple Goddess, Chiron surprises Percy by becoming his substitute history teacher at Alternative High School, although Chiron explains that it's simply a coincidence. Wanting to simply be a teacher sometimes, Chiron got Percy's stepfather Paul Blofis to put him on the district's substitute list. Percy has recently learned that Chiron's wheelchair isn't just a disguise, as it is actually hard for the centaur to walk. Chiron was once shot in the leg by Hercules with a poisoned arrow, leaving the centaur with a permanent leg injury and in eternal agony. Percy feels guilty for not having noticed it before. This story mirrors Chiron's death in mythology. Chiron provides Percy with information on Hecuba and is gone a few days later, much to Percy's disappointment. Paul later tells Percy that Chiron is due to teach his class the next week while Paul is on jury duty.
Chiron is played by Pierce Brosnan in the first film and by Anthony Head in the second film. In the musical, he is portrayed by Jonathan Raviv. In the TV series, he is portrayed by Glynn Turman, with the character depicted with a leg brace on his left hind leg as the result of a war injury.
Luke Castellan was a 19-year-old son of Hermes and May Castellan. He appears in The Lightning Thief, The Sea of Monsters, The Titan's Curse, The Battle of the Labyrinth and The Last Olympian.
Introduced initially as the friendly head counselor of the Hermes cabin, Luke is revealed to serve Kronos at the end of The Lightning Thief. He is resentful of his father, who adhered to the gods' policy of non-interference despite Luke's mother May Castellan's mental illness after her failed attempt to become the host of the Oracle of Delphi. Having had enough of his mother's "fits", Luke ran away from home at nine years old and eventually arrived at camp aged fourteen with Annabeth Chase and Thalia Grace. After the loss of Thalia, a failed quest and continued silence from Hermes, Luke's ongoing resentment turned into a strong hatred of his father and the other gods. Described as decent and kind before Kronos, he behaved with volatility and violence after his defection. Though Luke originally served Kronos willingly, the horrors he witnessed during the Battle of Manhattan convinced him to fight against his former master, eventually committing suicide to destroy the Titan, who was using Luke as his host, by stabbing himself in his Achilles Heel with a celestial bronze knife he had given to Annabeth when they first met. When he died, Luke reiterates what Ethan Nakamura had told Percy before: Unclaimed children and unrecognized gods deserve more respect than they have been given. Percy later fulfills his request.
Luke is described as handsome, with sandy blonde hair, blue eyes, and a long scar on the side of his face, given to him by Ladon the Dragon during his failed quest. Besides the ability to open locks with his mind, which he inherited from his father, Luke is an excellent swordsman. He receives a sword named "Backbiter" from Kronos at the end of The Lightning Thief. It is later reforged as Kronos's scythe and has the ability to harm both mortals and immortals because of its double-edged blade, half steel, half celestial bronze. From Halcyon Green, he receives a diary he later entrusts to Chiron, and a celestial bronze knife he later gives to Annabeth with a promise to always remain her family. The knife becomes cursed after Luke's defection to Kronos. From his father Luke receives magic flying shoes, which he later curses and gives to Percy, but Percy gives the shoes to Grover. Just before giving himself over completely to host the spirit of Kronos, Luke bathes in the River Styx and obtains the invincibility of Achilles.
In the films, he is portrayed by Jake Abel, with Samuel Braun as a young Luke in the second film. In the musical, he is portrayed by James Hayden Rodriguez. Charlie Bushnell portrays Luke in the TV series on Disney Plus.
Thalia Grace is the daughter of Zeus and Beryl Grace, a TV starlet. She is seven years older than her brother Jason Grace and appears in The Lightning Thief, The Sea of Monsters, The Titan's Curse, The Last Olympian, The Lost Hero, The Blood of Olympus, The Dark Prophecy, and The Tyrant's Tomb.
Due to her mother's abusive nature, Thalia had considered leaving home since she was little, but stayed to protect Jason whom her mother was particularly fixated on. When Jason was seemingly sacrificed by their mother during a visit to Sonora, Thalia finally ran away and stayed on the run with Luke and Annabeth until they met Grover the satyr when she was 12. When they reached camp, Hades sent a horde of hell hounds that Thalia held off, sacrificing herself for her friends. Zeus pitied his daughter and turned her into a pine tree; her spirit then provided a magical barrier around the camp, keeping mortals and monsters out. Seven years later, she is separated from the pine tree with the Golden Fleece, which was applied to save it from poisons that were destroying the magical barrier protecting the demigods.
No longer assumed dead, she is the oldest surviving child of the "Big Three" gods, and thus is first in line to be the child of the prophecy. In The Titan's Curse, she is one of three chosen by Zoë Nightshade to accompany her on her quest. On this quest, she is confronted by Luke, who she has not seen since was turned into a pine tree. She refuses his offer to join him in his crusade. At the end of The Titan's Curse, she becomes the lieutenant of the Hunters of Artemis, after the previous lieutenant, Zoë Nightshade sacrifices herself, which freezes her age the night before her 16th birthday and prevents her from being the child of the prophecy. She returns occasionally to aid characters in future books.
Thalia has bright blue eyes and short, spiky black hair, and wears black eyeliner and punk style clothing. Jason describes her as having a Mediterranean complexion. Annabeth and Chiron remark that her personality and character traits (like her bravery and loyalty) are very similar to Percy's. She also shares some traits with her father, such as his pride, confidence, and vehement reactions to betrayal or contradiction. An incredibly skilled warrior, she is willing to attack even Luke, who was known as the best swordsman of the last 300 years. Thalia's weapons are a replica of the shield Aegis, disguised as a silver bracelet, and a spear, disguised as a Mace can. After The Titan's Curse, she also uses a bow and hunting knives, given to her by the Hunters of Artemis. Her main power is the ability to summon lightning and generate electric shocks. In The Titan's Curse, she shows a rather ironic fear of heights, despite being a daughter of Zeus as a result she has not attempted to fly in the sky like her brother. In The Lost Hero, she embraces her brother Jason for the first time in years, only to learn that he had lost his memory.
She is portrayed by Paloma Kwiatkowski and Katelyn Mayer as the young Thalia in the second film. In the TV series, she will be portrayed by Tamara Smart.
In The Titan’s Curse, Zoë Nightshade is introduced as one of Artemis’ huntresses. She is described as looking around 14 years of age, although it is later revealed that she is well over 2000 years old. She is also later then revealed to be a former Hesperid, daughter of Atlas and Pleione. She appears in The Titan’s Curse, along with being mentioned in The Battle of the Labyrinth, The Son of Neptune, The Blood of Olympus, The Dark Prophecy, and being seen in a flashback in The House of Hades.
Zoë is described by Percy as being tall, graceful and gorgeously beautiful. She had brown eyes, slightly upturned nose and long dark hair braided with a silver circlet on the top. It is also stated by Percy that she gave him the impression of a Persian princess. Although her ethnicity or race is never specified, she is known to have copper-colored skin. She is said to have the same cold look in her eyes as her father, the Titan Atlas.
In her early life, Zoë gave Hercules tips on how to trick her father, helping him complete his quest on stealing the golden apple. She then gifted him her hairpin, which turns into "Anaklusmos", the sword currently in the possession of Percy. After her sisters had found out about what Zoë had done, they exiled her. This pained Zoë, knowing that the Hesperides were her only family. Ultimately, Hercules never gave Zoë any credit and eventually abandoned her. As a reaction, she came to hold a grudge against male Heroes, especially those who reminded her of Hercules.
After her incident involving Hercules, Zoë joins the hunters of Artemis, a group of eternal maidens who swear off romantic love for semi-immortality and hunt with Artemis until they fall in battle. Zoë Nightshade eventually rose to become Artemis' loyal lieutenant for over 2000 years.
Zoë Nightshade makes it very clear that she dislikes Thalia Grace. Once had they ran into her, Luke Castellan, and Annabeth Chase. Zoë had asked Thalia to join the hunters, almost managing to convince her, but Thalia refuses, not wanting to leave Luke. Zoë was offended by her decision, which led them into a heated argument. This gave Thalia a strong hatred to the Hunters, especially Zoë Nightshade.
Throughout the book, Zoë talks in an Early Modern, or Shakespearean, English. She also is said to speak in an old, strange accent, more heavily when upset. She would use words like ‘thou’, ‘thee’, and ‘thy’, and got irritated when Thalia would correct her speech, exclaiming “I hate this language! It changes too often!”.
Zoë also showed particular interest and love for the stars. After her death, caused by Ladon attacking her and Atlas’ final blow, she is turned into a constellation by the goddess Artemis. However, before she passes onto the stars, Zoë apologizes to Thalia, telling her that they could have been sisters. She also addresses Percy, telling him that she is honored he carried "Anaklusmos".
In The Sea of Monsters, Tyson is introduced as Percy's bullied, childish friend. When Percy is forced to take him to camp, it is revealed that he is a baby Cyclops and thus a son of Poseidon, making him Percy's half-brother. He appears in The Sea of Monsters, The Titan's Curse, The Battle of the Labyrinth, The Last Olympian, The Son of Neptune, The Mark of Athena, The Blood of Olympus and The Tyrant's Tomb.
Tyson is tall with unkempt teeth and fingernails, brown hair, and eyes. He is mentally about 8 years old but highly intelligent and compassionate. As a son of Poseidon, he shares some of Percy's powers. As a Cyclops, he is immune to fire and has super strength, an uncanny ability to mimic voices, enhanced senses, and understands the "old tongue" (the language spoken by Gaia to her first children). Tyson is close with several characters and magical creatures in the series, including Rainbow the hippocampus, the hellhound Mrs. O'Leary, and the harpy Ella, who eventually becomes his girlfriend.
In The Sea of Monsters, Tyson first appears as a huge homeless kid that is taken in as a class project by Merriweather Prep, Percy's school. Tyson is sensitive, childish, and bullied with Percy being his only friend. However, it's also suggested that Tyson's presence in Percy's life has shielded him from attack throughout the year as monsters are too afraid to attack Percy while he is with a Cyclops. When Laistrygonian giants attack in the guise of a dodgeball game, Tyson's powers as a Cyclops shield him from harm and level the playing field, allowing him to defeat several of the giants before Annabeth Chase intervenes to finish the job. Due to her own bad experiences with Cyclopes, Annabeth reluctantly takes Tyson with them to Camp Half-Blood where his immunity to fire proves to be vital in defeating the attacking Colchis Bulls. Annabeth reveals Tyson's true nature to Percy and the young Cyclops faces a great deal of prejudice from the other campers due to his monster heritage and frustration from Percy when Poseidon claims Tyson as his son, causing Percy to be bullied as well. The sole exception to the bullying is Charles Beckendorf whose father, Hephaestus, employs Cyclopes, causing Beckendorf to befriend Tyson and train him in metalworking. When Percy and Annabeth secretly leave on a quest for the Golden Fleece, they only reluctantly take Tyson along and he befriends the hippocampus Rainbow who transports them to the Princess Andromeda. While trying to enter the Sea of Monsters, Tyson is apparently killed when the CSS Birmingham explodes as Tyson is trying to fix the engine at time, the only one capable of withstanding the extreme heat. Tyson later resurfaces on Polyphemus' island, having survived the explosion before being rescued by Rainbow. Polyphemus calls Tyson his half-brother, but Tyson helps Percy defeat Polyphemus, rejecting the other Cyclops for his evil ways. After returning to camp, Tyson repairs and upgrades Percy and Annabeth's chariot for the second chariot race and provides them with weapons. His gift to Percy, a wristwatch that Tyson had spent the summer working on, turns out to be a shield that proves to be vital in their victory. Afterward, Tyson reveals to Percy that having faced a hard life of constant monster attacks, he had prayed to their father who had led Tyson to Percy. Having received an offer to work in Poseidon's underwater Cyclops forges, Tyson leaves on Rainbow, saddening Percy who has come to see the Cyclops as a true brother.
In The Titan's Curse, Percy stays connected with Tyson through Iris's messages, although Tyson's new job and Percy's own responsibilities make this somewhat difficult to manage. At the end of the book, Tyson reveals that he has gotten permission to take the summer off and return to Camp Half-Blood.
In The Battle of the Labyrinth, Tyson returns to camp and repairs Percy's wristwatch shield which had been damaged while fighting the Manticore months before. Tyson joins the quest through the Labyrinth to find Daedalus and is at first excited to meet his idol Briares who they rescue on Alcatraz Island. However, Briares had become depressed, as all of his siblings had perished and lost the will to live, disillusioning Tyson. When Grover sets off on a side quest to find the missing wild god Pan, Tyson decides to join him despite his nervousness and allergies around satyrs. Percy, Annabeth, Grover, Rachel, Nico, and Tyson are present when Pan fades from existence. Tyson takes part in the last battle with Kronos' forces. When Briares arrives to help, he credits Tyson with his decision to help and he calls Tyson the true Hero.
In The Last Olympian, Percy meets his brother again a year later when, after the destruction of the Princess Andromeda, he ends up in Atlantis. Although the city is under siege by the ocean gods allied with Kronos, Poseidon refuses to allow Tyson to fight, leading to an argument between him and Percy because Poseidon believes that Tyson is too young to fight and must instead be protected. When Poseidon arrives to help defeat Typhon, much to Percy's joy, Tyson is leading Poseidon's army of Cyclopes. Following the defeat of Kronos, Zeus commends Tyson's bravery by making him the General of the Cyclopes. Due to Tyson's preference for a club for a weapon, Zeus promises that the gods will find him a suitable club.
In The Son of Neptune, Tyson is shown to be searching for the missing and amnesic Percy. When Percy's memories begin to return and unable to Iris message any of his friends, Percy manages to contact Tyson through a dream. Percy instructs his brother to find Ella the harpy and to meet him near the Caldecott Tunnel. After his quest, Percy summons his hellhound Mrs. O'Leary at the tunnel and she arrives with Tyson and Ella, leading to an overjoyed Percy and Tyson reuniting. Ella comments on Tyson's bravery and Percy notices that his brother is blushing, causing Percy to tease him about the romance blooming between Tyson and Ella. Tyson takes part in the Battle of New Rome, effortlessly killing the Cyclops Ma Gasket and her children and also battling Earthborn spirits with the help of advice on their weak spots from Ella. After the battle, Tyson is present when Percy is made praetor of the legion and when the Roman Senate discusses the approach of the Greek demigods.
In The Mark of Athena, Tyson is still present when the Argo II arrives. After Ella issues a prophecy, Percy discreetly orders Tyson to take Ella away, not wanting Octavian to learn of the harpy's knowledge of the lost Sibylline Books. After things go south, Percy contacts Tyson and orders him to take Ella to Camp Half-Blood where the harpy will be safe.
In The Blood of Olympus, Tyson is mentioned to have brought in a few friendly Cyclopes to aid in Camp Half-Blood's defense. When Reyna, Nico and Coach Hedge are cornered by Michael Kahale, Leila and Dakota on a yacht near Camp Half-Blood, Tyson unexpectedly arrives to help with Ella, who is now his girlfriend, and Rainbow, using his ability to mimic voices to mimic Octavian and trick the Romans into disarming themselves. Taking advantage of the surprise, Tyson effortlessly knocks Kahale unconscious with a single blow to the head, which is notable because Kahale is said to be so strong that it takes someone with an immense strength to overpower him. Tyson brings Ella and Coach Hedge back to Camp Half-Blood on Rainbow and relays Reyna's message about her intention to come at sunrise. During the ultimate battle with Gaea, Tyson leads the friendly Cyclopes against the Earth goddess and her monster army. Afterwards, with the powers of prophecy no longer working, Tyson joins Ella and Rachel Elizabeth Dare in traveling to New Rome in the hopes of reconstructing the Sibylline Books, the only source of prophecies left at the moment.
In The Tyrant's Tomb, Tyson and Ella have settled in New Rome where the harpy has been using her photographic memory to reconstruct the lost Sibylline Books while the harpy and the Cyclops run a bookstore at the same time. Ella's transcriptions take the form of tattoos on Tyson's skin rather than being put on paper, something that Apollo finds to be awkward to deal with. Tyson also has his girlfriend give him a tattoo of his friend Rainbow. Tyson and Ella help Apollo (Lester) to decipher the prophecies surrounding the current threat from Caligula, Commodus and Tarquin and later to perform a ceremony to summon Diana for help against the emperors and Tarquin's undead legion. The two are still in Diana's temple when Tarquin attacks their bookstore, looking for the Sibylline Books. After the battle, Tyson and Ella rename the bookstore Cyclops Books and provide Apollo and Meg with the first part of a new prophecy that directs them to return to New York City to face Nero.
In the films, he is portrayed by Douglas Smith. In the TV series, he will be portrayed by Daniel Diemer.
Nico is first seen in The Titan's Curse, as an unclaimed demigod rescued by Percy, Annabeth, Thalia, and Grover. At the end of the novel, it is revealed that Nico is a time displaced son of Hades. He appears in The Titan's Curse, The Battle of the Labyrinth, The Last Olympian, The Son of Neptune, The Mark of Athena, The House of Hades, The Blood of Olympus, The Hidden Oracle, The Tower of Nero and The Sun and the Star, of which he is one of two main protagonists (the second being his boyfriend, Will Solace.)
Despite biologically being ten years old when first introduced, he and his elder sister Bianca were born in the 1930s. After Zeus killed their mother Maria while trying to kill the children, Hades wiped their memories and placed them in the Lotus Hotel by the Fury Alecto, a place in Las Vegas where time stands still for decades, before he and Bianca were removed from the Lotus Hotel by Alecto, who brought them to the military academy Westover Hall.
He is native to Venice, Italy and can speak Italian (as his native language). Nico is initially depicted as cheerful and childlike, with olive skin and dark hair. He enjoyed playing Mythomagic, a mythology-themed card game similar to Magic: The Gathering. He takes the death of Bianca very hard, becoming moody, secretive, and irritable. He becomes angry at Percy, who swore to protect Bianca, but later forgives him. Afterward, he lived in the Underworld with Hades, where he becomes pale and shaggy-haired and begins wearing dark clothing. Nico, despite being very powerful, is extremely lonely, much like his father. He makes nearby people uncomfortable, partially due to his weapon of choice: a sword made of iron cooled in the river Styx ("Stygian iron"), capable of absorbing monsters' essences rather than banishing them to Tartarus. Stygian iron, unlike celestial bronze and Imperial gold, can harm both mortals and immortals.
Nico’s suggestion that Percy take on the curse of Achilles and his work to convince Hades to fight in The Last Olympian is crucial to the Olympians' success and earns him a short bout of fame. He is privy to the fact that there are two camps, one Greek and one Roman, before The Lost Hero, making him an important liaison between the two groups in the latter series. He brings his half-sister Hazel back from the dead and establishes her at Camp Jupiter. At the end of The Son of Neptune, Nico travels through Tartarus to find the monstrous side of the Doors of Death, an experience that leaves him haunted and weak.
In The Mark of Athena, he is captured by the giants Ephialtes and Otis to be used as bait before being rescued. In The House of Hades, Nico keeps a promise to Percy to guide the Seven to the mortal world side of the Doors of Death. Nico is outed as homosexual to Jason Grace by Cupid and is revealed to suffer from internalized homophobia due to growing up in the 1940s. After Cupid outs him, Nico admits his long-standing feelings for Percy to Jason. Although Jason offers Nico support, he is rebuffed. During Percy and Annabeth's time in Tartarus, they are helped by Bob the Titan who was convinced by Nico that Percy is a good friend. After Percy and Annabeth escape Tartarus thanks to the aid of both Bob and the Giant Damasen, Percy reunites with Nico and attempts to reconcile with him, but fails. During The Blood of Olympus, Nico, with the help of Reyna Avila Ramirez-Arellano and Gleeson Hedge, transport the Athena Parthenos to Camp Half-Blood. At the end of the novel, he fully reconciles with Percy and admits his feelings for him, although he notes that he no longer has those feelings anymore and the two depart as friends. During the events of Heroes of Olympus, he developed feelings for Will Solace, son of Apollo, who becomes his boyfriend between the events of The Blood of Olympus and The Hidden Oracle. As revealed in The Sun and the Star, Will developed an interest in Nico while Nico was helping him in the infirmary, and Nico in turn fell for Will when he helped Nico deal with his anger over the death and resurrection of Leo Valdez. Subsequently, an attempt by Nico to ask Will out during a private picnic turned into a camp-wide coming out party for Nico due to a misunderstanding. Deciding to come out rather than continue hiding, Nico publicly asked out Will, who accepted while none of Nico's worst-case scenarios surrounding coming out happened, giving him more confidence. Nico later realizes that his homophobia comes from a bad reaction that he got from a friend while he was eight in the 1940s.
In The Blood of Olympus, he nearly dies several times while "shadow-traveling", which involves melting into shadows and teleporting himself to different places. His sister, Hazel Levesque, whom he brought back from the dead, is the daughter of Hades' Roman counterpart Pluto. In The Hidden Oracle, Will Solace introduces him as his boyfriend to Apollo. Although their attraction for each other is hinted at in The Blood of Olympus, they are not seen getting together. After the three-legged death race, he is seen assisting Will to treat the injured patients. At the end of the book, he helps Apollo and the others fight after his and Will's canoe capsized. In The Tower of Nero, he and Will help to fight Nero and Nico is shown to have become depressed following the death of Jason Grace. At the end of the book, Nico is convinced that his friend the Titan Iapetus or 'Bob' is calling for help from Tartarus despite his apparent death in The House of Hades. Nico decides to try to find out what happened to the friendly Titan with Will's help and rescue him if need be.
In The Sun and the Star, two months after The Tower of Nero, Rachel Elizabeth Dare gives Nico and Will the prophecy for their quest to Tartarus for the twelfth time, prompting Nico to convince a reluctant Chiron to give them an official quest. Nico and Will enlist the help of the troglodytes, or "trogs", whom Nico had relocated to the Underworld following the events of The Tower of Nero, to sneak into Tartarus without Hades' knowledge. Impressed by their success, Menoetes reveals that Bob has been captured by the primordial goddess of night Nyx who has been trying to force Bob to become Iapetus again. Nico finally reveals the story of his first trip into Tartarus and his encounter with Nyx, who grew interested in the young demigod due to his internal darkness. The trogs subsequently lead Nico and Will to the River Acheron, where the nymph Gorgyra agrees to help them in exchange for Nico and Will sharing their story with her (two of the story's being how they got together and the first kiss.) The demigods use Gorgyra's canoe to ride the Acheron into and through Tartarus, but the river's power forces them to confront their insecurities and differences of opinion, particularly Will's negative opinion of the Underworld which Nico sees as his second home. After finding Bob's pet saber-toothed cat Small Bob, the demigods finally locate the Titan in Nyx's home, the Mansion of Night, and free him from a continuous regeneration cycle by combining their powers of light and dark. Confronting the group, Nyx attempts to convince Nico to give into his darkness and to stay in Tartarus, revealing that she has created cacodemons out of that darkness. Fighting back against Nyx's manipulations, Nico gives the cacodemons their freedom, literally letting go of his demons in the process and convincing Nemesis, Hypnos and Epiales to help them escape, the cacodemons choosing to accompany them. While leaving the underworld, Bianca and Maria visit him in his dreams, urging him to enjoy his future with Will and find happiness. Returning to Camp Half-Blood, Bob departs to figure out his future while Nico decides to adopt the cacodemons, renaming them Cocoa Puffs.
Rachel is a mortal girl who can see through the Mist, the force that obscures gods and monsters from most mortals. Her father, Walter Dare, is a rich businessman, a fact which she is rather averse to. She first meets Percy in The Titan's Curse at the Hoover Dam, and they become friends. In The Battle of the Labyrinth, she guides Percy through the Labyrinth to Daedalus's workshop. It is hinted that she has some romantic feelings for Percy (which are noticed by Annabeth, who becomes extremely jealous). In The Last Olympian, she has strange visions about the war.
Later, after speaking with Chiron, she decides to become the new Oracle of Delphi, according to her fate. She gives up her feelings for Percy, her life as she knows it, and chances the tormented fates of her predecessors to take on this task. As far as readers are aware, she has been driven mad like other oracles have. Her role as the oracle greatly aids the characters for the rest of the books.
Her first act as the Oracle is to deliver the next Great Prophecy, setting the plot of the Heroes of Olympus series. She is contacted in The House of Hades to ask for Reyna's assistance to bring the Athena Parthenos back to Camp Half-Blood.
Following the loss of Delphi to Python, as revealed in The Hidden Oracle, Rachel stops visiting camp and begins a frenzied attempt to regain her foresight, not helped by Apollo's disappearance. Once informed of Apollo's arrival, Rachel returns and learns that not only Delphi is lost, but also three other Oracles, and that only Rhea's Dodonian Oracle is still valid. She becomes upset upon learning of the existence of other Oracles, as Apollo hasn't told her before. In The Tower of Nero, Rachel regains her powers of foresight after Apollo kills Python and helps him battle Nero. She plans to take the summer off before returning to work as the Oracle full time. She also provides Nico and Will with a prophecy.
In The Sun and the Star, two months after regaining her powers, Rachel has been forced to repeat her prophecy for Nico and Will's quest twelve times until they actually leave on it. It's later revealed that Hades had sent Nico the prophecy through Rachel so that Nico would rescue Bob.
She has red hair and freckles, is skilled at painting and drawing, and occasionally shown as a non-ADHD foil for her demigod teammates. Percy remarks on her ability to stand still for a long time at a charity event. Due to her power of foresight, Rachel knows a great deal of knowledge before she learns it herself.
Clarisse is a daughter of Ares and the former lead counselor of the Ares cabin at Camp Half-Blood. She is hot-tempered, courageous, strong, an incredible fighter (usually using an electric spear given to her by Ares), and a good military strategist. She can be stubborn and overconfident, much like her father. Despite their similarities, Clarisse has a fear of her father and his anger at her if she should ever disappoint him. This, along with a strong sense of honor and pride, often motivates her actions. She also fears the Labyrinth because of what happened to her boyfriend Chris Rodriguez before she saved him. She is aggressive towards most demigods, including Percy, though she does respect and make friends with a few, including Percy, Annabeth, and Silena Beauregard.
Clarisse makes frequent appearances throughout the novels, first seen just after Percy arrives at camp. In The Sea of Monsters, Clarisse is given the quest to find the Golden Fleece. She is a main character in the short story "Percy Jackson and the Stolen Chariot" (published in The Demigod Files). In The Last Olympian, Clarisse initially sits out the war for Olympus due to a personal feud. Enraged after the loss of her friend Silena, she later joins the battle with a fury reminiscent of her father's, slaying a drakon singlehandedly and receiving the blessing of Ares. In The Blood of Olympus, Clarisse leads the Greeks in battle to defend the camp. In The Hidden Oracle, it is stated that Clarisse has gone to attend the University of Arizona and her role as counselor is taken by her half-brother Sherman Yang.
She appears in The Lightning Thief, The Sea of Monsters, The Battle of the Labyrinth, The Last Olympian, The Mark of Athena, The House of Hades and The Blood of Olympus.
In the film adaptations, she is portrayed by Leven Rambin. In the musical, she is portrayed by Sarah Beth Pfeifer. Dior Goodjohn portrays Clarisse in the TV series.
Will Solace is a son of Apollo who is a native of Austin, Texas and the son of country singer Naomi Solace. While initially a recurring character in Percy Jackson and the Olympians and The Heroes of Olympus, Will becomes a main character in The Trials of Apollo and The Sun and the Star. He is stated to be the camp's best combat medic and runs the infirmary. According to Will himself, he lacks the archery skills of the other children of Apollo due to his inherited gifts being for healing rather than combat. Nevertheless, he is extremely brave and, along with his healing abilities, can emit a painful ultrasonic whistle and can glow. Will later discovers the ability to project rays of light from his body as an attack, channel his light through Nico di Angelo's sword to strengthen it and, by channeling his own darkness, Will can tap into Apollo's plague powers to make his enemies sick. Will is bisexual as revealed in The Sun and the Star.
Although unseen or at least unidentified, Will is present during the events of The Titan's Curse and The Battle of the Labyrinth as revealed in The Sun and the Star. As a result, he may be one of the unnamed Apollo campers mentioned during The Lightning Thief and The Sea of Monsters as well. Will reveals that, during the events of The Titan's Curse, he was training to be a field medic under his older brother Michael Yew and met Nico for the first time while treating his injuries after a training mishap.
In The Last Olympian, when Annabeth is hurt, Will uses his healing powers to help cure Annabeth. Following the death of his half-brother Michael Yew in the Battle of Manhattan, he becomes the head of the Apollo cabin.
In The Lost Hero, Will is assigned by Annabeth to show around recently arrived demigods Leo Valdez, Piper McLean and Jason Grace. Despite being properly introduced to Will, Leo refers to him as "the archer dude." Will also complains about Annabeth wrecking the Apollo Cabin's flying chariot.
In The Blood of Olympus, Will attends a head counselor meeting discussing the situation with Romans where he laments that he lacks the combat skills of many of his siblings due to his gifts being for healing. However, Chiron reassures Will that he will nevertheless play an important role due to the inevitable need for healers. At one point, Will calms down Clarisse by touching her arm, which Nico, witnessing the meeting through a dream, notes is an incredibly rare thing, as Clarisse would normally attack anyone who ever dared tried to do such a thing. Will delivers Coach Hedge's baby boy Chuck and, despite not being a fighter, volunteers to join the team sent to scout out the Roman positions to get a break along with Lou Ellen and Cecil. Will is reunited with Nico and the two begin bickering over Nico's use of his powers, which Will can sense are having a negative effect on his health. Will also berates Nico for his plan to leave both camps after the war, stating that there are people who are or would like to be Nico's friends if he would only give them a chance. The team sabotages the Roman onagers and Will uses his ultrasonic whistle twice to help defeat attacking enemies. During the final battle with Gaea's forces, Will and Nico confront Octavian who, being a Roman descendant of Apollo, is a distant relative of Will's, although Nico notes that compared to Will, Octavian is watered-down and unhealthy looking, lacking anything that makes a child of Apollo special. Although Nico and Will both see that Octavian's robes are caught up in the firing rope of the onager, Nico convinces Will not to intervene, leading to Octavian inadvertently launching himself to his death when he fires the weapon at Gaea. In the battle's aftermath, Nico avoids Will, convinced that the son of Apollo will now see him as a monster and want nothing to do with him, Nico having shown signs of a possible attraction to Will while working together on the battlefield. To Nico's surprise, Will forcefully tracks him down and orders Nico to spend three days in the infirmary recovering, berating Nico for avoiding him in the process. Nico comes out to Percy and admits his former crush on him before joining Will.
In The Hidden Oracle, Nico and Will are shown to have started dating each other in the six months since the battle. When Will's now-mortal father Apollo arrives at camp, Will and Nico aid Apollo in his quest and in adjusting to being mortal. After the battle with Nero's forces, Will treats the worst of the camp's cases of hay fever caused by Apollo's plague arrow.
In The Tower of Nero, Nico has become depressed following the death of Jason Grace on top of all of his other losses while Will is supportive and concerned for his boyfriend. During the final battle with Nero, Nico and Will help Apollo alongside the troglodytes, with Will at one point suddenly arriving with Camp Half-Blood reinforcements, as Nero apparently has the upper hand. Following Nero's death, Will coordinates treating everyone's injuries and helps Apollo prepare for his final battle with Python. Two weeks later, Apollo, now a god once again, visits his son and his boyfriend, and the two reveal that Nico believes that a voice that he's been hearing calling for help from Tartarus is Bob. Will plans to join Nico on his mission into Tartarus to try to find out what happened to Bob and to rescue him if he can, enlisting the help of the troglodytes to get in and out. Rachel provides them with a prophecy.
In The Sun and the Star, two months after receiving their prophecy, Nico and Will are the last kids at camp after all of the other demigods, including the year-rounders, choose to leave to see the world or to be with their mortal families at the end of the summer. Rachel arrives to repeat her prophecy for what turns out to be the twelfth time and Nico convinces a reluctant Chiron to give him and Will an official quest to rescue Bob. The quest brings up the problems with Nico and Will's relationship, particularly due to the effects of the River Acheron on the two demigods. Will is shown to be uncomfortable with the Underworld in general which irks his boyfriend due to Nico seeing it as his second home, although Nico helps Will to get a new perspective on it. In addition, Will is weakened over time by being so far from his father's domain of the sun. While telling stories to Gorgyra in exchange for her help, Nico and Will reveal the story of their relationship, including the fact that it was Nico who made the first move in what was intended to be a private picnic with the help of Juniper and the dryads but was turned inadvertently into a public coming out party. Throughout the quest, Will learns how to use his powers more offensively, using his powers over light to emit rays from his body that kills Epiales and singes Nyx's wing. Will is also able to tap into Apollo's plague powers and give Nyx a case of hay fever. By channeling his light through Nico into his sword, Will is able to make the weapon more powerful. They succeed in rescuing Bob and his pet Small Bob from Tartarus and return to Camp Half-Blood.
Calypso is the daughter of the Titan Atlas, who is imprisoned on the island of Ogygia for supporting her father during the first Titan war. She first appears in The Battle of the Labyrinth, where she nurses Percy back to health. She falls in love with Percy and is heartbroken when he has to leave. Percy asks the gods to release her at the end of The Last Olympian, but she is still residing there when Leo becomes trapped on Ogygia in The House of Hades, having been released from the curse of being forced to fall in love with all those to fall upon the island rather than the island itself. Leo and Calypso subsequently fall in love legitimately. After Leo escapes, he swears on the River Styx that he will return for Calypso. At the end of The Blood of Olympus, Leo gets back to Ogygia and frees Calypso using an astrolabe that Odysseus had built for that purpose, although he was unable to complete it without a crystal from the island that Calypso had given to Leo on his first visit.
In The Hidden Oracle, Calypso comes to Camp Half-Blood with Leo and reveals that, due to her choice to leave Ogygia, she has become a mortal. She accompanies Leo and Apollo in the latter's quest to find the Oracles and stop the Three Emperors from conquering North America. Despite this, the two secretly attempt to find a normalcy for their lives and later announce to Apollo that they are going to settle in Indianapolis, although they will continue to help him anyway they can. At the end of The Dark Prophecy, Calypso stays at the Waystation, while Leo goes to warn Camp Jupiter of an impending invasion and Apollo travels with Meg to search for the Erythraean Sybil. During The Dark Prophecy, Calypso regains her ability to use magic, although the goddess Britomartis suggests that she had simply lost control of her powers rather than losing them altogether. With training from Josephine, Calypso begins regaining control over her magic.
As a sorceress, Calypso can command wind spirits to do her bidding. She loses most of her control of them when she gives up her immortality; however, she is still capable of summoning them to a degree, though by consuming more power than usual. Also, due to spending a long time at Ogygia, she has mastered sewing and lock-picking, which she uses while finding the gryphons at Indianapolis Zoo. She is Leo's girlfriend as of The Blood of Olympus, The Hidden Oracle, The Dark Prophecy, and The Burning Maze. In The Tower of Nero, Leo reveals that Calypso is enjoying attending high school and is currently working as a counselor at a mortal band camp for kids. The two are currently in a fight due to Leo's disrespectful behavior towards women, but both Leo and Reyna are sure that they will work it out when she returns at the end of the summer.
Iapetus, also known as Bob the Titan, is the Lord of the West and the father of Atlas. Bob first appears as one of the main antagonists of the short story Percy Jackson and the Sword of Hades which appears in The Demigod Diaries as well as the back of the paperback edition of The House of Hades. He subsequently appears as a main character and a supporting protagonist in The House of Hades and The Sun and the Star.
In Percy Jackson and the Sword of Hades, demigod Ethan Nakamura uses the sword of Hades to release Iapetus from where he has been locked in Tartarus for millennia. Iapetus battles Percy Jackson, Nico, and Thalia Grace, proving to be more than a match for them. In desperation, Percy throws Iapetus into the River Lethe which erases the Titan's memories, leaving him with a childlike personality. Percy convinces the amnesic Iapetus that he's actually their friend Bob and Bob heals Percy's injuries from the fight and aids him in confronting Persephone over her secret creation of the sword in the first place. Bob is subsequently employed as a janitor in the Underworld by Hades.
In The House of Hades while trapped in Tartarus, Percy and Annabeth briefly reminisce about Bob, inadvertently summoning him to their aid when the Titan overhears them. Percy is left feeling guilty after learning how Hades and Persephone used Bob as a servant while Nico would visit and tell the Titan about how good of a friend Percy is. Bob acts as a guide and protector to Percy and Annabeth, his knowledge of Tartarus from his time trapped there proving vital in their quest to reach the Doors of Death and escape. However, the regenerative effects of Tartarus on monsters starts to heal Bob's mind and slowly restore his memories, including the fact that Percy was the one who erased them in the first place. On one occasion, the group faces monsters who cast curses upon them that their previous enemies have left. Bob hesitates to help until Percy apologizes for his actions and for being a bad friend.
Bob also befriends Small Bob, a sabertooth cat inadvertently created and then destroyed by Atlas in The Titan's Curse. Bob leads Percy and Annabeth to the friendly giant Damasen who heals the two demigods' injuries, but is convinced that he can't change his fate of forever battling the maeonian drakon despite Percy and Annabeth's belief that the line of the Prophecy of Seven about "foes bare arms to the Doors of Death" refers to the four of them: two demigods, a Titan and a Giant who should be mortal enemies under normal circumstances. Ultimately, despite the return of his memories, Bob takes Percy's advice to heart that he should take the parts of Iapetus' past that he wants while leaving everything else behind and continues to side with them, showing disgust for his evil past. At the Doors of Death, firmly identifying himself as Bob rather than Iapetus, he faces off against the embodiment of Tartarus alongside Small Bob, Damasen and the drakon, to ensure Percy and Annabeth's escape from the realm and the closing of the Doors of Death. The four are presumably destroyed in the process, devastating Nico, Percy and Annabeth who recognize Bob as a true friend. Percy sadly fulfils Bob's last request to say hello to the stars for him, Bob having wanted to see the stars again.
In The Tower of Nero, Nico begins hearing a voice calling out to him for help from Tartarus. Nico later reveals to Apollo that he believes that the voice is Bob, suggesting that the Titan had in fact survived his battle with Tartarus at the Doors of Death. Feeling guilty for leaving Bob behind, Nico is determined to travel into Tartarus and try to find out what happened to Bob and if possible, to rescue his friend. Nico and his boyfriend Will Solace explain that they intend to enlist the help of the troglodytes who are capable of safely tunneling into and out of anywhere, even Tartarus. However, Rachel issues them a prophecy that Will admits doesn't sound good.
In The Sun and the Star, he is rescued from Tartarus by Nico and Will. Having been killed fighting Tartarus, a reforming Bob was captured by Nyx who stuck the Titan in a permanent regeneration cycle. Nico and Will locate Bob's regeneration pod in the Mansion of Night and cut him out by combining their powers together. The reformed Bob joins the demigods in fighting against Nyx and her monster army before they make their escape. While the demigods rest, Bob sails them up the River Acheron, through the Underworld, out into Long Island Sound, and finally to the shores of Camp Half-Blood itself. In a dream, Hades reveals to Nico that he had sent his son the prophecy so that Nico would rescue Bob. Upon reaching Camp Half-Blood, Bob rejects an offer to stay and instead decides to head west with Small Bob.
Reyna Avila Ramírez-Arellano (also known by her initials RARA) is a 16-year-old Puerto Rican demigod. She is a daughter of Bellona, a Roman goddess of war, and the younger sister of Queen Hylla of the Amazons. She and her sister worked for Circe during the events of The Sea of Monsters where Reyna was one of the attendants who looked after Annabeth. After Percy and Annabeth escape and free Blackbeard and his crew, Reyna and Hylla were captured by the pirates before eventually escaping and going their separate ways.
Reyna found the way to Camp Jupiter, where she became the praetor of the Twelfth Legion just four years after she joined. She is generally a well-respected leader in New Rome, though known to be distrustful. When she found out about the Greek demigods, Reyna chose not to pursue revenge, despite the difficult history between them. This is in part due to the impeding battle, which she understands Greeks and the Romans will have to be united to win.
She is described as intimidating and a natural leader; she has glossy black hair and very dark brown eyes. Reyna is used to more responsibility than other demigods, as she is a praetor at Camp Jupiter. Reyna's demigod ability is the power to lend her energy, skills, and character traits to nearby demigods. Similar to Leo Valdez, she can speak English, Latin and Spanish. Reyna is often accompanied by two magical dogs, Aurum and Argentum, or by her pegasus Scipio ("Skippy" dies after their trip from New York to Greece in The House of Hades after being slashed by a griffin's poisonous claw). The immortal winged horse Pegasus awards her the title of "Horse Friend" because of her kindness towards Scipio and his descendants. Unlike other POV characters, Reyna does not have an explicit 'fatal flaw', leading to fan speculation including but not limited to; overprotection, distrust, and holding grudges.
In The Blood of Olympus, she, Nico, and Coach Hedge go on a quest to return the Athena Parthenos to Camp Half-Blood. While shadow-travelling to New York, the trio stops in San Juan and visits Reyna's former house, haunted by the ghosts of her relatives. There Reyna reveals that the Ramírez-Arellano family (which includes Roberto Cofresi and Captain Marion Frederic Ramírez de Arellano) has always been favored by Bellona. Reyna's father (an Iraq War veteran) deeply loved the goddess, but his PTSD turned this love into an unhealthy paranoia. When Reyna was ten years old, he became a mania, a spirit personifying insanity, madness, and crazed frenzy. When the mania attacked Hylla, young Reyna picked up the closest weapon and killed what remained of her father. Reyna is reluctant to discuss the incident because patricide is "unforgivable" in New Rome.
Reyna had romantic feelings for Jason Grace, which is shown throughout the series. Several characters like Percy, Annabeth, Piper, and Hazel have noticed Reyna's romantic feelings for Jason. In The Mark of Athena, Annabeth noticed that Reyna had a hungry sort of gleam in her eyes when she reunited with Jason Grace. Eventually, Annabeth sensed that Reyna wanted Jason to love her back. In The House of Hades, Jason felt guilty for letting her believe they had a future together. In The Blood of Olympus, she daydreams about romantic activities with Jason like "romantic walks" and "sunset picnics". After Jason had disappeared, it is implied that she briefly considered Percy a romantic partner. In The Tyrant's Tomb, Reyna is revealed to be asexual. Riordan has described her as a "romantic asexual" though invites any interpretation of the reader.
Following the Battle of San Francisco Bay, Reyna resigns as praetor and instead joins the Hunters of Artemis. In The Tower of Nero, after becoming a god once again, Apollo encounters Reyna who is settling in well with the Hunters and has been mentoring Leo Valdez in his behavior towards Calypso.
Leonidas "Leo" Valdez is a son of Hephaestus. He likes to joke around and relies on his sense of humor to bury the pain he feels as a result of his troubled past. He is described as having curly brown hair, brown eyes, a cheerful face, a slim and scrawny build, dark skin, and a mischievous smile. He is Hispanic-American and speaks Spanish. Leo has the ability to create and manipulate fire, a skill that no child of Hephaestus has had for 400 years. He also has severe ADHD, even by demigod standards. He is an excellent mechanic and at one point repairs a bronze dragon running wild in the camp's woods, which he names Festus (Latin for "happy"). Inspired by a blueprint in Bunker 9, an abandoned bunker in the camp's woods, and a picture he drew in his kindergarten time, he also creates the Argo II, the flying ship the seven demigods of the Great Prophecy sail on to reach Greece.
When Leo was eight, Gaia tricked him into burning down his mother Esperanza's machine shop in Houston, resulting in her death. Leo's remaining family blamed him for killing her and left him a foster child and runaway. He meets Piper McLean at the Wilderness School in Nevada. Later, in The Lost Hero, he meets Jason Grace, who wakes up on a school bus headed to the Grand Canyon with no memories. However, Leo and Piper have Mist-induced memories of meeting and becoming friends with Jason. He sometimes thinks of himself as a seventh wheel, as for the first three books of the Heroes of Olympus series, he is the only person aboard the Argo II without a significant other, though he proves no less important or skilled than the others. In The Mark of Athena, Hazel learns her former boyfriend, Sammy Valdez, was Leo's great-grandfather. Until he falls in love with Calypso, a nymph third-generation titanness, in The House of Hades, Leo flirts with almost every girl he meets to cover up his insecurities about never finding love. In The Blood of Olympus, Leo sacrifices himself to annihilate Gaia and dies in the process, but is brought back to life using the Physician's Cure and returns for Calypso on her island, Ogygia. This is an impressive feat, as nobody has ever been to Ogygia twice. However, Leo had the advantage of an astrolabe that had been created for just such a purpose by Odysseus as an old man. Leo had gotten the device from two dwarfs shortly before landing on Ogygia and had learned from them that Odysseus had lacked a vital crystal to complete the device which Leo had convinced Calypso to give him before leaving the island.
He and Calypso then journey back to Camp Half-Blood, sending a magic scroll ahead to let his friends know he's alive. When he does arrive at camp (at the end of The Hidden Oracle), everyone lines up to punch him for keeping them worried for so long. As Leo is included in the prophecy of the Grove of Dodona, he and Calypso accept the task to accompany Apollo on his quests in The Dark Prophecy. Afterward, he announces that he and Calypso will be living at the Waystation and leading an ordinary life. When the prophecy of Trophonius requires that someone must warn Camp Jupiter of an invasion, Leo does the task alone. He returns, but later learns of Jason's death. In The Tower of Nero, Apollo encounters Leo briefly while visiting the Waystation after becoming a god once again.
Festus is a mechanical dragon made decades ago by the Hephaestus cabin at Camp Half-Blood, and given wings by Leo Valdez years later. He was first encountered in The Bronze Dragon where Festus goes on a rampage before being shut down by Percy, Annabeth and Charles Beckendorf who intends to reprogram Festus to help defend the camp.
In The Lost Hero, Festus has gone out of control ever since Beckendorf's death, but Leo's immunity to fire allows him to corral and tame the bronze dragon. Festus transports Jason, Piper, and Leo, before being destroyed by a crash-landing at King Midas' mansion. Leo asks Hephaestus to take his head to Bunker Nine at Camp Half-Blood, where he later repairs him to be the figurehead on the Argo II. Festus acts in this role throughout The Mark of Athena and The House of Hades, acting as the ship's control interface and occasionally helping to defend against attacks. After Piper uses charmspeak on him, Festus is stated to be constantly active, and he is described as being more alive than ever. Although Festus was initially damaged beyond any hope of repair due to his control disk being destroyed in the crash landing, Leo is able to build him a new control disk using the works of Archimedes that he had recovered in The Mark of Athena.
In The Blood of Olympus, Festus is secretly rebuilt by Leo and plays a vital role in the defeat of Gaea, lifting the primordial goddess high in the air where she's weaker and holding Jason and Piper steady as Piper charms the goddess to sleep. After Gaea's defeat, Festus resurrects Leo with the Physician's Cure and helps him to rescue Calypso using a mariner's astrolabe created by Odysseus.
In The Trials of Apollo, Festus acts as one of Apollo's allies. In The Hidden Oracle, after traveling the world with Leo and Calypso for six months, Festus finally returns them to Camp Half-Blood with the help of a homing beacon created by Leo's little brother Harley. He is destroyed again in The Dark Prophecy by Commodus while defending the Waystation, but is easily rebuilt by Leo who had redesigned Festus in case of such an eventuality. In The Burning Maze, Festus transports Leo to Camp Jupiter to warn them of an upcoming attack and is mentioned to have helped to defend the camp. He later brings Leo to see Apollo, Meg and Piper in the aftermath of the events in the Labyrinth. In The Tower of Nero, Leo mentions that he's using Festus as his workshop while Leo teaches homeless kids shop skills. Although most of the kids only see Festus as a large vehicle, a few can see through the Mist and see Festus in his true form.
Piper McLean is a daughter of Aphrodite and the famous actor, Tristan McLean. She is fifteen in The Lost Hero. Unlike most children of Aphrodite, Piper is not particularly concerned with beauty or fashion. Piper is Cherokee on her father's side. She has tan skin, eyes that change color constantly, and choppy chocolate-colored hair which she cuts herself. Her demigod powers include "charmspeak" (essentially, magical persuasion) and the ability to speak French, as it is "the language of love". She is also occasionally able to see visions in her magic dagger Katoptris (Ancient Greek for "mirror"), which once belonged to Helen of Troy. The dagger lost that power after the battle against the giants in Athens.
Piper's relationship with her father is mutually affectionate but strained, in part because of the small amount of attention he spares for her. When she was young, Piper used her persuasive skills to "borrow" (ask for in charmspeak) things to earn a little of his time. After he is kidnapped by the giant Enceladus in The Lost Hero and subsequently rescued by Piper, Jason, and Leo, Mr. McLean's relationship with his daughter begins to improve. Piper is also very close to Jason. Though she later learns it was all a trick of the Mist, she believed she was once his girlfriend while they attended the same school. She works hard to recreate this relationship in real life when she comes to Camp Half-Blood. She is also friends with all of the seven quest members in The Heroes of Olympus, especially Annabeth, Leo and Percy.
Piper's main weapon is her dagger Katoptris, though she later acquires a magic cornucopia and uses it as a weapon. After being captured by pirates in The House of Hades, Piper asks Hazel to teach her sword fighting, using a jagged celestial bronze sword taken from the Boread Zethes.
In The Hidden Oracle, Nico mentions that Piper is currently attending school in Los Angeles, together with Jason. In The Burning Maze, it is revealed that her relationship with Jason ended a few months earlier. Apollo, as Lester Papadopoulos, is confused because the cloud nymph, Mellie, had seemed angry at Jason, leading Apollo to mistakenly believe that Jason had broken up with Piper, while in fact, Piper had ended the relationship because she felt it was forced. It is later unveiled that she wanted to discover herself and who she really was without the pressure of being the daughter of Aphrodite. The trick of the Mist that Hera used at the beginning of their relationship also contributed to the breakup as that meant that their relationship was technically "fake". Still, she is heartbroken when he sacrifices himself in The Burning Maze. In The Tower of Nero, because he was still one of her best friends who she could confide in. Later, she is revealed to be in a relationship with a mortal woman named Shel.
In The Sun and the Star, after returning from Tartarus, Nico contacts Piper who is still with Shel. The two discuss their grief over the loss of Jason and promise to be closer friends in the future. Piper reveals that she is truly happy with Shel, although she is still figuring herself out which Nico gives her advice on. Piper also admits that she had truly loved Jason.
Jason Grace was a son of Jupiter and the mortal Beryl Grace, and the younger brother of Thalia Grace (Hunter of Artemis). He was raised by the wolf goddess Lupa and her pack after his mother was compelled to give him up when he was two, then later lived at Camp Jupiter, the Roman equivalent of Camp Half-Blood. Jason inherited many special powers from his father Jupiter like summoning lightning bolts, controlling winds, flying, summoning storm spirits, and creating different types of storms like thunderstorms, rainstorms, and hurricanes. Jason is also a master swordsman and spear user. He and Thalia are reunited in The Lost Hero, and Thalia later reveals that their mother told her that Jason was dead, and that this was what finally drove her to leave home. Also in The Lost Hero, he begins a romantic relationship with Piper McLean. In The Blood of Olympus, it is revealed that Beryl Grace had become a mania, or spirit of madness.
Jason is often described to be very handsome and attractive. He had blond hair, electric blue eyes, and a scar above his upper lip, which is said to be from his attempt to eat a stapler at age two. By the age of fifteen, he had earned the rank of praetor and led the legion with his longtime partner, Reyna who eventually falls in love with him. Jason also coordinated the Roman camp's attack on the Titan force prior to the events of The Lost Hero: he led an assault against Mount Tamalpais/Othrys, a Titan stronghold near San Francisco, and defeated the Titan Krios in combat by himself. Piper McLean describes Jason as a very rule- and duty-oriented person, though Terminus describes him as a "rule-flouter”. Of all the characters in the series, Jason is the one who struggles the most with the differences between the Greek and Roman perspectives. When the Argo II is stuck in North Africa, he must choose one identity or the other; he decides to consider himself a Greek, despite his parentage, and is subsequently unable to command a legion of Roman ghosts. During The House of Hades, it is revealed that Jason has plans to return to Camp Jupiter to improve it with things he learned at Camp Half-Blood, such as giving the fauns (the Roman equivalent of a satyr) more rights and responsibilities. Later, during The Blood of Olympus, Jason decides to consider both the Greek and Roman traditions as part of his heritage. He becomes the Pontifex Maximus, a role which sees him travel between Camp Half-Blood and Camp Jupiter to build shrines for every god and goddess in the pantheon.
Jason is killed with arrows during The Burning Maze by the Roman Emperor Caligula after sacrificing himself to save Piper, Apollo, and Meg. His death is avenged by Frank Zhang in The Tyrant's Tomb with Frank telling Caligula that it's for Jason. Jason is given a state funeral in New Rome overseen by Apollo. In The Tower of Nero, Nico senses that Jason has likely moved on to either Elysium or been reborn.
Hazel Levesque is a fourteen-year-old demigod, a daughter of Pluto and Marie Levesque. She first appears in The Son of Neptune, at Camp Jupiter. It is later revealed that she has returned from the dead, assisted by her half-brother Nico. She grew up in the 1940s in New Orleans, where her mother had a gris-gris shop. When she was born, Pluto offered to grant her mother a wish, but her request for wealth backfired into an ability to control precious metals and gems, which both first view as a curse. Hazel died after Gaea tries to use Hazel's power over earth to resurrect Alcyoneus. When Hazel's mother changes her mind about helping Gaea, Hazel buries herself and her mother under the earth, delaying Alcyoneus's rebirth and killing them both. While Hazel's spirit is being judged, she gives up the chance to go to Elysium to save her mother from punishment, and they are both sent to the Fields of Asphodel instead. At some point before The Lost Hero, Nico finds Hazel in the Underworld while trying to visit Bianca, only to find she has tried for rebirth. With the Doors of Death open, Nico is able to take Hazel to the world of the living through them, resurrecting her and then delivers Hazel to Camp Jupiter. Hazel and Nico are protective of each other, much as true half-siblings.
Hazel is described as African American, having cocoa-colored skin, curly cinnamon-brown hair, and golden eyes. Her legion tattoo is described as looking like a cross with curved arms and a head. She eventually learns to manipulate her curse, manipulating precious stones and metals and sensing structures underground. She is an accomplished horse-rider and skilled with a spatha. She tames the horse Arion, who eats precious metals. She is unusually knowledgeable about the Underworld because of her time there. During The House of Hades the goddess Hecate insists Hazel learn to manipulate the Mist. Hazel becomes very gifted at this. After the Second Gigantomachy, Hazel is promoted to the rank of centurion of the Fifth Cohort, succeeding her boyfriend Frank Zhang. During The Tyrant's Tomb, Hazel reveals that she has managed to break her curse with Frank, which is confirmed in The Tower of Nero. This confirms something that Juno had once told Hazel: that a descendant of Poseidon would some day wash away her curse. She is now able to summon precious metals and use and spend them without terrible consequences. In The Tyrant's Tomb, she and Frank team up with Apollo and Meg McCaffrey to protect Camp Jupiter from the emperors Commodus and Caligula as well as the undead king Tarquin. In The Tower of Nero, she and Frank are stated to be the best praetors that Camp Jupiter has ever had.
Frank Zhang, born Fai Zhang (Frank's Chinese name), is a 16-year-old demigod, son of Mars (Ares) and Emily Zhang, a Chinese-Canadian "legacy" (descendant of a demigod) who died during military service in Afghanistan. He is taken care of by his grandmother after his mother's death, and makes his way to Camp Jupiter upon her insistence. Frank's family descends from Periclymenus, a grandson of Poseidon, who had the power to shapeshift. Periclymenus's descendants were sold into slavery in China, and migrated to Canada many years later. While battling Alcyoneus (who is invincible within Alaska), Frank taps into his ancestral power and transforms into a bear. However, his combined power of being a son of Mars and having the ability to shapeshift makes his life very fragile. The Fates tied his life force to a piece of firewood when he was a baby, so if the wood burns up, he will die (as in the ancient Greek legend of Meleager). The goddess Juno appears to his mother and grandmother while he is a baby to warn them of this fact, as he would be crucial to defeating the Giants. In all of his life, Frank has ignited the wood twice, which he can do simply by thinking about it; the first time is while he is finding his way to Camp Jupiter, in bitter cold. The second time is when he, Percy, and Hazel travel to Alaska to free Thanatos. Eventually, Frank entrusts the firewood to Hazel, and in The House of Hades, Leo creates a fireproof pouch to contain it.
Frank has a meek disposition and is uncomfortable upon learning his father's identity publicly in front of the whole of Camp Jupiter. He suspected himself a son of Apollo, given his skill with a bow and arrow. On his quest in The Son of Neptune, and later during the series as well, he uses an enchanted spear given to him by Mars. The spear summons a skeleton warrior, which Frank calls "Gray".
As he has been residing in Camp Jupiter for no more than a year, Frank is initially considered a probatio, or rookie, of the Fifth Cohort. During the Roman War Games, after Percy impresses everyone with his battle skills and instincts, Mars appears, informing Frank that he is his son and is to lead a quest. Since only centurions are allowed to lead a quest, Reyna has to promote him to centurion rank. Later, in The House of Hades, Jason surrenders his praetorship to Frank, who uses its authority and Diocletian's Sceptre to lead an army of Roman skeleton soldiers against the monsters in the Necromanteion.
Frank was described as 'cuddly' and 'fuzzy' and with a chubby, babyish face in The Mark of Athena, but in The House of Hades, after summoning the blessing of Mars to defeat a hoard of enemies, he transforms. He is then described as being taller, more muscular, and without all of his childhood fat. Though now built like a professional football player, he is still as sensitive as before, and is embarrassed at his new appearance at first.
Initially, Frank is wary of the tension between Hazel and Leo (caused by Leo's resemblance to Hazel's old boyfriend, Sammy Valdez). After Leo's encounter with Calypso, however, Leo becomes more relaxed around Hazel and their relationship becomes clearly platonic, much to Frank's relief. Frank then pursues a relationship with Hazel.
Frank burns his stick for the final time in The Tyrant's Tomb to kill Caligula. Despite the stick completely burning, Frank survives, freeing him from his curse. Apollo believes that by taking his fate into his own hands in such a noble way, Frank has created a new fate for himself free of his curse. Apollo compares Frank's fate to Meleager, noting that Meleager's family had hidden his curse from him and his mother was eventually forced to use the firewood to kill him while Frank's family revealed the truth and it helped to shape who Frank became. It's also revealed that his romantic relationship with Hazel has enabled her to break her curse, fulfilling a prophecy that she had received that a descendant of Poseidon would wash away her curse.
In The Tower of Nero, Frank and Hazel are revealed to have become the most efficient praetors the Twelfth Legion has ever had and have been building up New Rome.
Gleeson Hedge is a satyr first mentioned in The Last Olympian, as the author of a distress call sent to Grover Underwood. Like Grover, Hedge is also a demigod Protector, his proudest "recruit" being Clarisse La Rue. He disguises himself as a coach at the Wilderness School to escort Piper McLean and Leo Valdez (and later, Jason Grace) to Camp Half-Blood. He also serves as the adult chaperone for the Argo II and later accompanies the Athena Parthenos to camp. Despite his often warlike and often overly aggressive attitude, Hedge is kind and understanding to campers in need. He enjoys extreme sports and martial arts movies. In The Lost Hero, Hedge falls in love with cloud nymph Mellie (assistant to Aeolus) and marries her; by the time of The House of Hades, Mellie is pregnant with a satyr boy. Chuck, the baby, is born at the end of The Blood of Olympus, with Clarisse as his godmother. In The Hidden Oracle, Hedge, Mellie, Chuck, Piper, and Jason are spending the winter in Los Angeles.
Apollo, in the mortal form of Lester Papadopoulos, serves as the main protagonist of The Trials of Apollo series.
In The Heroes of Olympus, Apollo's Roman descendant Octavian promises the god many things for blessing his prophetic skills, which leads to the Olympians' distraction from the true threat of Gaia, and to the resurgence of Python. As a result, the Delphic Oracle ceases to function, effectively halting demigod quests, and Zeus punishes Apollo. Zeus's punishment consists of making Apollo mortal, though he retains most of his personality and some more minor powers. This punishment is revealed in The Trials of Apollo. In his mortal form, Apollo's name is Lester Papadopoulos. Apollo has to adjust to a life of mortality and questing to regain his former powers and lifestyle.
Following a meeting with two thugs in Manhattan, Apollo encounters a demigod called Meg McCaffrey, who claims him as her servant until he regains his godhood. Apollo is released by Meg after the revelation of her alliance with his enemy. His quest to become a god again is to liberate the oracles and face down his demons and the brutal mistakes he's made. Apollo is a truly flawed yet humorous character with a deeper capacity for growth and love than even his blameful, punishing father Zeus realizes.
As Lester, Apollo is a 16-year-old teenager with curly brown hair, blue eyes, acne, and a "flabby" torso. He is narcissistic, prideful, and arrogant. His mortal transformation makes him empathize with mortals and reaches a higher understanding of the worth of life, the meaning of death, and what it means to be alive. In particular, he grows to care for Meg deeply and resolves to be there for her despite the difficulties involved. After killing Python in The Tower of Nero, Apollo is reinstated as a god but is changed for the better by his time as a mortal, having grown up and established real relationships with his children and others. He doesn't define himself sexually but has been in relationships with both females and males.
Margaret (Meg) McCaffrey is a 12-year-demigod daughter of Demeter and the main character in The Hidden Oracle. Her father was murdered by "the Beast" (Emperor Nero) and she was subsequently adopted by Nero, gaslighted into personifying Nero's evil actions as separate from him. Nero taught her the arts of a demigod and gave her a pair of crescent rings which can transform into sickles made of imperial gold, before giving her a task to lure Apollo into the Grove of Dodona. Meg appears to Apollo in an alley of Hell's Kitchen, Manhattan where she defeats two thugs, who were sent by Nero to stage a robbery. Meg demands Apollo's servitude and they travel to Camp Half-Blood with Percy Jackson's assistance. There, Meg displays unusual abilities even before Demeter claims her, and later goes with Apollo to search for missing demigods and the Grove in the nearby woods, having to endure a brief abduction in the process. Her relationship with Nero is revealed at the climax, but her growing doubtfulness regarding Nero's ways, not to mention her already familiar friendship with Apollo, leads her to rob Nero of his chance of burning the Grove. While she helps Apollo bring the Grove alive, she severs their bonding spell and leaves.
In the second book, The Dark Prophecy, she returns to Apollo and helps him fight Commodus.
Meg is described as small and pudgy, with dark hair chopped in a messy pageboy style and black cat-eye glasses with rhinestones in the corners. She is free-spirited and adventurous, inquisitive, and is also confrontational. She poses questions with no subtlety, something that Apollo is annoyed with but later comes to regard as a unique trait. Her abilities as Demeter's daughter allows her to connect better with nature as well as summoning a karpos (crop spirit) called Peaches, a power that none of Demeter's other demigod children are known to possess.
Even though she is Demeter's daughter, not Ceres (the Roman manifestation of Demeter) she fights like a Roman, with two swords; one for offense and one for defense. She is also known for her liking of unicorns in the fourth book The Tyrant's Tomb.
Hemithea, known as "Emmie", is a retired Hunter of Artemis and caretaker of the Waystation. She lives with her partner, Josephine, also an ex-Hunter, and their daughter Georgia at the Waystation in Indianapolis. She and her sister were granted immortality by Apollo after escaping from the wrath of their father, King Staphylus. She then joined the Hunters of Artemis and fell in love with fellow hunter Josephine, so sometime in the 1980s, Josephine and Emmie gave up their immortality to grow old together. In The Dark Prophecy, she saves Calypso, Leo and Apollo from the Blemmyae with crossbow turrets and lets them stay at the Waystation. She comments on the similarities between Calypso and her half-sister Zoë Nightshade.
Triumvirate Holdings is a company that is led by three beings who are said to be the worst Roman Emperors in history. They force other people to worship them. During the Second Titanomachy, Triumvirate Holdings was responsible for giving Luke (at the time under the influence of Kronos) and his allies the Princess Andromeda, weapons, helicopters, and top human mercenaries. During the Second Gigantomachy, Triumvirate Holdings supplied Octavian with different weapons. Rachel described Triumvirate Holdings to be so rich that they make her father's company "look like a kid's lemonade stand". The trio have divided up North America into three major empires and are hunting for Oracles, which they plan to destroy.
Among the known members of Triumvirate Holdings are:
Though not all the gods who appear in Rick Riordan's novels are truly Olympians (that is, gods who live on Mount Olympus), all Greek and Roman gods are generally considered to be a subset of the Olympians. As such, most characters in the series refer to these immortals generally as the "Olympian gods", to distinguish them from the Greco-Roman primordial gods and Titans.
The primordial deities are the deities that came before the Titans and the Olympians came into existence. Among the known primordial deities are:
The Titans are the children of Gaea and Ouranos. Most of them fought against the Gods during the Titanomachy which ended with the Gods winning. Among the featured Titans are:
The Gigantes (also called the Great Giants) are giant-like beings that were made by Gaea and Tartarus to overthrow Olympus. They were previously defeated by the gods and Heracles during the Giantomachy. Each was meant to oppose a specific god. They can only be defeated by a god and demigod working together. Most of the Gigantes are described as being very tall with dragon-like legs and shaggy hair.
The following demigod characters all have one parent who is a Greek or Roman god (or, more rarely, a Titan), while the other parent is a mortal human. It is common for these "half-bloods", as they are known, to grow up unaware that they are not entirely human. They are frequently referred to by gods and other mythological beings as "mortals".
Different historic people are mentioned to have Greek Gods as their parents or are otherwise involved with the series. Among the known historical demigods are:
The following are mentioned not as direct children of the Olympians, but as grandchildren, great-grandchildren, or the like:
The following characters from Greek mythology appear in this series. Most of them are the direct children of gods or Titans, but a few are mortals with such great power that they are able to influence the realm of the gods.
Many of the beings and creatures of Greco-Roman myths are humanoid—in other words, they possess both the intelligence and some of the physical features of humans. The vast majority of these creatures are friendly, such as nymphs and centaurs. Unlike most Greek creatures, these beings are also unquestionably sentient and tend to have larger roles in the novel series.
Carter Kane is one of two main protagonists and narrators; a descendant of Narmer and Ramses the Great. He is the son of Julius and Ruby Kane. After the death of his mother when he was eight, he spent six years travelling the world with his Egyptologist father. His sister Sadie lives with their maternal grandparents and Carter and his father visit Sadie twice a year, on the winter and summer solstices. After his father is captured by the god Set during The Red Pyramid, Carter spends most of his time with his sister Sadie and uncle Amos Kane. He becomes the host of Horus in the first novel, and often collaborates with and receives advice from the god. He also develops a romantic relationship with the shabti of magician Zia Rashid, and subsequently spends much of his time trying to find the real Zia and demonstrate his feelings toward her. Like his father, Carter has dark skin and hair, quite different from both his mother and sister. When living with his father, Carter dressed "impeccably" like Julius even when relaxing, but adopts a much more casual style when he goes to live at Brooklyn House. Though he is not one to flout rules, Carter is brave and courageous enough to pursue the way of the gods despite the House of Life's disapproval. His specialty is combat magic; his preferred weapon a khopesh, but loses it in The Throne of Fire. He is often given leadership responsibilities and struggles to accept his role, until he willingly becomes pharaoh of the House of Life during The Serpent's Shadow. However, he decides to focus on leading Brooklyn House while leaving his uncle Amos as the Chief Lector to deal with the day-to-day running of the House of Life. In The Son of Sobek and The Crown of Ptolemy, Carter teams up with Percy Jackson and Annabeth Chase to combat Setne, briefly using Greek magic and Annabeth's invisibility cap.
Sadie Kane is one of two main protagonists and narrators; at thirteen years old, she is the younger sister of Carter Kane. She is left in the care of her non-magical grandparents in London after the death of their mother Ruby Kane. Though she is able to live a "normal" life, something her brother is occasionally jealous of, her unusual circumstances make her sometimes jealous of Carter. Sadie has to abruptly leave her life in London when she goes to revive the twenty-first Nome and fight Set after the god captures her father, Julius Kane. Sadie becomes the host of Isis in The Red Pyramid and continues to study the goddess's path throughout the series. She also becomes romantically involved with one of the Brooklyn House initiates Walt Stone and also with the god Anubis, though her relationship with either is not formalized until after Walt becomes the "eye" of Anubis in The Serpent's Shadow, due to this she is the only current polyamorous character in Rick Riordan's works.
She has caramel-colored hair, fair skin and blue eyes, some traits inherited from her mother Ruby. Unlike Carter, Sadie is rebellious and bold and acts the part; often making snap decisions, ignoring rules, and choosing to wear clothing to display her personality (such as combat boots) rather than to conform or aid her magic. Her magical specialty is with spells, potions, and hieroglyphics. One of her favorite spells is Ha-Di, which means to destroy.
Walt Stone is one of the twenty-first Nome's initiates, who arrives at Brooklyn House sometime between the first and second novel. He has dark skin and is from Seattle, where he lived with his mother. Walt is a sau, or charmmaker. In The Throne of Fire, it is revealed that Walt has inherited a deadly curse from his ancestor Akhenaten, which will kill him before reaches adulthood, as it did to his father and their famous ancestor King Tut. The curse progresses more quickly when he uses magic, which is why he specializes in charms and also why he begins to call on the god Anubis for guidance. In The Serpent's Shadow, Walt finally succumbs to the curse, but as he dies he allows himself to become the host of Anubis, whose spirit can essentially keep him alive. Both Anubis and Walt Stone have romantic feelings for Sadie Kane, which makes it easier for Walt to host Anubis. In The Staff of Serapis, Sadie tells Annabeth Chase that it's confusing dating both of them while they are merged, although she has accepted it.
Zia Rashid is a magician from the first Nome who was born and raised in Egypt. She is found and raised by Iskandar, the Chief Lector, after the destruction of her hometown by Apophis. When Julius Kane released five gods through the Rosetta Stone, she became the unexpected host of Nephthys, and was subsequently placed by Iskandar in an underwater prison so the House of Life could not eliminate her. A shabti of her was created to take her place; it is destroyed during the fight with Set in The Red Pyramid. Carter Kane falls in love with this shabti and seeks out the real Zia to free her and release Nephthys's spirit. Zia, who specializes in fire magic, later becomes the host of Ra and the two manage to destroy Apophis in The Serpent's Shadow. Her initial indifference to Carter slowly evolves into romance, and the two begin dating at the end of the series when Ra ascends back to the heavens.
Amos Kane is Julius Kane's younger brother, Carter and Sadie's uncle, and the leader of the twenty-first Nome (New York). He takes in Carter and Sadie after Julius hosts Osiris and is trapped by the god Set. During the first novel, Amos is possessed by Set and forced to lure his niece and nephew to the god's pyramid in Phoenix, Arizona. Once freed, Amos goes for healing at the first Nome, and does not return to Brooklyn House until the second novel. His experience hosting Set has changed him, however, and eventually leads to his decision to voluntarily host the god during the final battle with Apophis. Amos succeeds Michel Desjardins as leader of the House of Life after he sacrifices himself fighting Apophis. After the final battle, Carter becomes the Pharaoh, but leaves Amos in charge of running the day-to-day operations of the House of Life in Amos' capacity as Chief Lector.
Anubis is the God of funerals and death with the appearance and personality of a teenager despite him being over 5,000 years old. Anubis is the son of Nephthys and Set, but felt closest to his uncle Osiris, who raised him in Duat. Unlike the other Egyptian gods, Anubis does not require a host to manifest on Earth and is instead able to appear in any place of death. In The Red Pyramid, Sadie sees him several times in dreams without understanding who he actually is and develops an immediate attraction to Anubis. To get the Feather of Truth, Carter and Sadie travel into the Underworld where Sadie meets Anubis in person for the first time and convinces him to give her the feather before Anubis teleports them to New Orleans. Later, Anubis appears to Sadie when she touches her father/Osiris' tomb and attempts to warn her against her actions. Days after the battle is over, Anubis visits Brooklyn House to transport Carter and Sadie to meet with their father and Osiris, calling his time with Sadie "stimulating", but annoying Sadie as Anubis tells her mother that Sadie has a sharp tongue.
In The Throne of Fire, Anubis appears in a graveyard in London while she is being chased by two hostile gods, although he is unable to help her directly as Anubis can't manifest outside of the graveyard. Instead, Anubis directs Sadie to the second part of the Book of Ra and gives her a Netjeri blade and kisses Sadie as a birthday present. After Sadie and Carter are knocked unconscious, she encounters Anubis in a dream who is talking with Walt Stone and he gives her more advice about the Book of Ra. To Sadie's disappointment, Anubis is not present when she and Carter are gambling their souls with Khonsu. Anubis later states that he was busy with a "side project" that he won't elaborate on while Walt glances at a picture Sadie made of Anubis, suggesting that the god and the magician are plotting something together.
In The Serpent's Shadow, Anubis appears with Sadie's mother after she is knocked unconscious and offers her clues about the shadow box that she saved. During a dance that Sadie attends, Anubis appears to dance with her, stunning the popular girls who were harassing Sadie moments before, including Greek demigod Drew Tanaka and making them extremely jealous. Anubis offers Sadie advice on her and Carter's plan to destroy Apophis despite the magic being so forbidden that he's not even allowed to talk about it. Anubis then reveals that ghosts are being absorbed by Apophis' shadow before his great-grandfather Shu appears to break the two up. Shu reveals that due to Anubis' growing romantic feelings for Sadie, he has been banned from seeing her with Anubis stating that such a relationship is forbidden unless the god is using a human host which has never been how Anubis works.
Walt eventually admits to Carter that Anubis thinks he only has until the next day's sunset to live and that the god has been helping him to make sense of his strange new power to turn things to dust. Anubis thinks he understands why Walt has that particular power and Anubis has a plan to extend his life, but it's not a cure and is risky, never been done before and might come with side effects that they won't like. When Walt is near death from his curse, Anubis appears to him and Sadie is annoyed to realize that the two have been plotting behind her back together. Near death, Walt agrees to what they've been planning together, both Anubis and Walt unable to bring themselves to leave Sadie. After Walt dies, Anubis vanishes and Walt is suddenly resurrected. Sadie finally realizes that Walt and Anubis' plan was for Walt to become Anubis' host and that Walt's strange death powers had come from him channeling Anubis' power for months. Overwhelmed, Sadie leaves through a portal that Anubis opens for her to help Carter while Walt and Anubis, still too weak to move, remain behind for the time being to recover.
Anubis and Walt fight in the final battle with Apophis and the rebel magicians, playing a crucial role in the defeat of the latter. Although Apophis' destruction means that the Egyptian gods must depart the Earth for the time being, Anubis using Walt as his permanent host means that he can stay and pursue a real life, something that Anubis has never gotten before. Sadie starts a romantic relationship with Walt and Anubis, finally able to be with both of the boys that she loves without having to choose between them.
In The Staff of Serapis, Sadie mentions to Annabeth Chase that she's still dating both Walt and Anubis and that it's confusing, but she has accepted it. Annabeth is left confused by the comment about Sadie's "funeral god boyfriend", but she doesn't question it.
Iskandar is the Chief Lector of the House of Life. Born in the 1st century BCE, during the reign of Cleopatra VII, he witnessed the end of the Egyptian monarchy and the absorption of Egypt into the Roman Empire. He came to believe this was the fault of the gods and ended the House's policy of calling upon them; Ruby Kane's vision of Apophis rising changes his mind, but it is too late for him to make any real change. He saved Zia after her village's destruction and, sensing that she holds the power to host Ra, arranged for her confinement in an underwater prison under the watch of Nephthys while creating a shabti of her to protect Carter and Sadie, both of whom also hold the potential to become hosts of gods. Shortly after meeting them, he dies in his sleep, knowing that these three can make a change where he could not. He is succeeded by Michel Desjardins as the House's leader. Sadie briefly encounters his spirit in the Realm of the Dead while making her way through it.
Michel Desjardins is the lesser antagonist and leader of the House of Life after the death of Iskandar. Desjardins is the grandnephew of Jean-François Champollion and approximately 200 years old, considered "young" for a magician. As such, he has known only the House policy forbidding the Path of the Gods. He is therefore at first opposed to cooperation with the gods and disagrees with the Kanes when they claim it is necessary to stop Apophis. As a result of his antagonistic behavior, the Kanes wrongly suspect him of being the host of Set in The Red Pyramid. After Set's defeat, Desjardins is outraged that Carter and Sadie chose to make a deal with the god rather than banish, but chooses not to attack them in the end, realizing that enough fighting has been done for one day and that his men appear to be wavering after witnessing the Kanes give up the powers of Horus and Isis willingly. In The Throne of Fire, he works with Vladimir Menshikov in the latter's attempt to hunt Sadie and Carter Kane, believing his lies about how the Kanes' efforts will empower Apophis. Throughout the book, Desjardins grows visibly weaker and older and Zia Rashid realizes that Menshikov has been poisoning him while Desjardins mistakenly believes that it is the weight of leadership getting to him. Desjardins eventually realizes the truth and comes to the Kanes rescue in the Duat where Menshikov has been possessed by the spirit of Apophis. Desjardins casts an execration spell upon Menshikov, killing him and banishing Apophis deeper into the Duat for a while. However, the effort costs Desjardins his life as Desjardins uses up all of his life force to cast the spell. Before dying, Desjardins makes peace with the Kanes and has them pass on his title of Chief Lector of the House of Life to Amos Kane. He is mentioned several times throughout The Serpent's Shadow, particularly in relation to how the Kanes plan to defeat Apophis is to perform their own execration upon the god. It's noted that Desjardins only faced a weaker manifestation of the snake and couldn't do more than banish him for a while the Kanes face Apophis himself at his full power.
Set is the ancient Egyptian god of evil and the secondary antagonist of The Red Pyramid and a supporting character in The Throne of Fire and The Serpent's Shadow. Although he initially appears to be the main antagonist of The Red Pyramid, Set is actually manipulated secretly by Apophis throughout the book. While Set is evil, he is stated many times to be more of a necessary evil, unlike Apophis. In ancient times, Set acted as the faithful lieutenant of Ra in the eternal war against Apophis and he was born on the third Demon Day, or December 29. He would eventually marry his sister Nepthys and have a son with her, Anubis, but Anubis was raised by Osiris and Isis instead. After Ra retreated into the heavens and Osiris became the new Pharaoh of the gods, Set refused to stand for it, imprisoned his brother in a magnificent sarcophagus and relentlessly chased Isis who was able to rescue Osiris. However, Set blew Osiris into fourteen different pieces and although Isis managed to reconstruct her husband, she was only ever able to resurrect him as the Lord of the Underworld. Set was eventually dethroned by Horus in revenge and in time, would be imprisoned along with the rest of the gods by the House of Life.
In The Red Pyramid, Julius Kane uses the Rosetta Stone to release Osiris and return him to his throne in the Underworld as a first step towards restoring the gods due to the increasing threat of Apophis. However, Julius inadvertently releases all five gods of the Demon Days, including Set who imprisons Julius and Osiris in a sarcophagus and begins draining them of their power. He also secretly possesses Amos Kane to get close to Julius' children Carter and Sadie, the hosts of Horus and Isis respectively, whom he sends various minions after, including two other gods. Goaded by his demon minion Face of Horror, Set decides to summon a storm that will destroy North America at sunrise on his birthday to increase his own power. Despite Set's machinations and having to avoid the House of Life, the Kanes manage to confront Set at his base, the Red Pyramid. As Carter fights Set, Sadie teleports the pyramid to Washington, DC through a portal, severing Set from the source of his power, the desert, and stopping the storm and his plot. Having gotten Set's secret name "Evil Day" from Nepthys, Sadie performs a spell to banish Set deep into the Duat, but sensing that something is wrong, looks into the rift that the spell opened and spots Apophis, the true orchestrator of the plot. Breaking the spell, Sadie uses the Feather of Truth to show Carter and Set Apophis in the sky and Carter kills Face of Horror who is revealed to be possessed by Apophis whose true plan was to use the Chaos energy generated by Set's storm to escape from his prison. Rather than continue their attempt to banish Set, the Kanes negotiate with him, recognizing Set as a necessary evil and an important part in the war with Apophis. In exchange for being released, Set swears on his secret name and Ra's throne to not return until he is summoned to help in the fight against Apophis. Once Set is released, he departs into the Duat.
In The Throne of Fire, Vladimir Menshikov summons Set into a malachite jar, trapping him and using his knowledge of Set's secret name to force the god to reveal the properties of Apophis' prison. Noticing the Kanes hiding nearby, he alerts Menshikov to their prison and, outmatched by the older magician, Sadie breaks the jar and frees Set who incapacitates Menshikov and allows the Kanes to escape as thanks. After Carter is poisoned by a deadly monster snake, Set helps Sadie get Carter to safety and in exchange for Sadie giving him back his secret name, he offers her the location of the last part of the Book of Ra which Bes confirms that Set would know as he was the one to hide it. After making Set agree to a continuing truce with her family, Sadie takes the deal. In addition, Set informs Sadie of where to find the missing Zia Rashid, which makes Sadie suspicious as Apophis did the exact same thing, although not as well as Set. To Sadie's surprise, Set keeps their deal and departs without trying to harm them. He is later present when Ra retakes his throne.
In The Serpent's Shadow, Amos is revealed to have been communicating with and channeling the power of Set, concerning Carter, Sadie and Zia who fear that Set may be controlling Amos again. Set appears to Carter on the Egyptian Queen and reassures Carter that he is not manipulating Amos, implying that Amos had in fact sent Set to talk to Carter. Set insists that he is simply a necessary evil, balancing out the other gods who are good and that he does not want Apophis to win, reminding Carter of his service as Ra's faithful lieutenant. During the final battle with Apophis and the rebel magicians, Amos acts as Set's host and although Amos is in control, he appears to struggle with some of Set's more violent tendencies. After Apophis is destroyed, Set is exiled along with the other gods. He attends Horus' coronation as Pharaoh of the gods, supporting him, but with a smile that suggests that Set has something evil planned. In addition, Amos begins wearing crimson clothing which Carter thinks is to play up his connection to Set. As a result, Carter doubts that Amos will have any more trouble enforcing his rule.
Apophis is the serpent of Chaos who fought Ra in ancient times and the primary antagonist of The Kane Chronicles. When Ra eventually retired to the heavens, he sacrificed his third aspect Khepri to seal Apophis away in a prison deep within the Duat and sent his loyal cat goddess Bast to fight Apophis for eternity inside of the prison. Before the series begins, Ruby Kane, who has prophetic abilities, foresees Apophis' eventual escape and sacrifices herself to rescue Bast from their prison as a first step to restoring the gods and preventing Apophis' rise.
In The Red Pyramid, Apophis acts from behind the scenes after Julius Kane begins the process of releasing the other gods. By possessing Set's demon minion Face of Horror with a fragment of his soul from within his weakened prison, Apophis pushes Set to create a storm that will destroy all of North America which will create enough Chaos energy to allow Apophis to break free. Both the gods and the magicians remain unaware of Apophis' role in the events, believing that Set is only acting on his own, something that Set himself is also unaware of. During the final battle, as Sadie Kane performs a banishing spell for Set, the advice of her mother causes her to look into the sky and see Apophis within the rift opened by the spell and she finally understands the truth. Breaking the spell, Sadie uses the Feather of Truth to reveal Apophis to both her brother Carter and Set. Enraged, Apophis has Face of Horror attack Sadie, but Carter kills him with his sword. As the demon dies, Apophis taunts them at what he had managed to accomplish through only a fragment of himself before the fragment rejoins Apophis in the closing rift. Recognizing that Apophis is returning and is the greater threat, the Kanes make a deal with Set rather than banishing him.
In The Throne of Fire, the Kanes and their allies work to combat Apophis' inevitable escape by locating and restoring Ra to power. At the same time, Apophis has magician assassin Vladimir Menshikov, one of his allies, hunt the Kanes and sends various monsters after them. Despite the best efforts of Apophis' forces, the Kanes manage to awaken Ra, but he is in a weakened and senile state. In a final confrontation in the cavern holding Apophis' prison, the Kanes learn that the price of retrieving Khepri - Ra's final aspect - is the release of Apophis from his prison. Sadie nevertheless completes the spell, taking the final beetle of Khepri's form and releasing Apophis who possesses Menshikov to fight the Kanes directly, proving to be more than a match for them. However, House of Life Chief Lector Michel Desjardins arrives to help after finally believing that the Kanes are telling the truth. Desjardins performs an execration spell on Apophis, a spell that uses a small representation of a target to completely erase the spell's target. However, as a god, Apophis can't be killed by the spell which only destroys Menshikov and banishes the serpent a little deeper into the Duat, buying the Kanes time to escape with Ra. Desjardins dies after using up all of his life force to banish Apophis.
In The Serpent's Shadow, Apophis is in an all-out war with the House of Life and has secretly allied himself with the rebel magicians who are fighting against Amos Kane's leadership of the House of Life, putting the Kanes and their allies into a two-front war that they are slowly losing. The Kanes learn that Apophis intends to rise on the fall equinox while having the rebels attack the First Nome at the same time. With Ra still in a senile state, the Kanes desperately search for a way to defeat Apophis and learn that he has been destroying copies of the Book of Overcoming Apophis written by Setne and attempt to secure the last copy resulting in a battle that destroys the Fifty-First Nome and kills many of their remaining allies. Sadie manages to banish Apophis from the battle by invoking Ma'at, but the effort involved nearly kills her. However, the magicians manage to recover a shadow box containing King Tut's sheut or shadow which is a part of his soul. Carter comes upon the idea of using Apophis' own shadow in a stronger execration spell which Anubis reveals is possible, but is highly secret and forbidden magic as such a spell could destroy even a god forever. With the help of Setne, Carter and Zia Rashid seek out Apophis' shadow which has been absorbing the souls of many people, including their mother, to help boost the serpent's power. The two manage to capture the shadow and escape with the unexpected help of elderly gods from the Duat.
Upon emerging in the mortal world, it's discovered that Apophis has begun his attack which is only held off only by Bast. While the Kanes rush to help their friends, Ra, reborn after taking Zia as a host, Sobek and Bes join the fight to hold him off. After defeating the rebel magicians, Carter calls upon the gods to join the battle, but even together they prove to be no match for Apophis who kills Nekhbet and swallows Ra, darkening the sun. With all hope seemingly lost, Carter and Sadie, with the help of Horus and Isis, cast the shadow execration upon Apophis while Bast and Bes hold Apophis off to buy them the time that they need. As he casts the spell, Carter comes to the understanding that Apophis' shadow is more than just a "backup copy" of a person's soul, it stands for their legacy, their impact on the world. With no shadow, a person's existence becomes meaningless and they can't be alive. As a result, even if Apophis manages to survive the spell, it will cut his connection to the mortal world and he will never be able to rise again. Apophis defeats Bes and Bast, but is too late to stop the Kanes from finishing the spell, destroying his shadow. All of the souls that the shadow had consumed are released and it shatters his legacy upon the world, causing all of the wars, murders, turmoil and anarchy Apophis has caused since ancient times to lose their power and finally stop casting their shadow across the world's future. As he dies, Apophis warns the Kanes that they haven't just killed him, but they have exiled the gods as well because Ma'at and Chaos are linked and to push one away is to push the other away. As Apophis tells the Kanes that Ra will die within him, Ra suddenly explodes out of Apophis, blowing Apophis' head apart. Apophis is destroyed and crumbles into sand and steaming goo.
Setne is an evil magician and the son of Ramses the Great. His real name is Prince Khaemwaset, but he hates it. He is a secondary antagonist in The Serpent's Shadow and the primary antagonist of the Demigods & Magicians crossover series. He is mentioned to have performed a number of evil deeds for which he has always managed to get away with. These are stated to include causing the French Revolution and triggering World War I. He is also known to have traveled and explored extensively and to have stolen a number of spell books that he should never have gotten his hands on and to have created a number of his own spells. His ultimate ambition is to become a god himself and his power is only constrained by the fact that he is long dead and is currently a ghost.
In The Serpent's Shadow, the Kanes and their allies seek out the last copy of the Book of Overcoming Apophis written by Setne, having come to the conclusion that it holds the secret to defeating the evil god since he has specifically targeted all of the existing copies. Setne himself appears to Sadie Kane, warning her that she will need his help and to save a shadow box. The book is destroyed, but the shadow box presents a clue that causes the Kanes to realize that Setne may have developed a way to kill an immortal being using their shadows or sheuts. With Setne facing oblivion in the Underworld, the Kanes convince their father Julius and Osiris to lend Setne to them and he leads Carter and Zia to the Book of Thoth and then into the Land of Demons to get Apophis' shadow. After several foiled betrayals, Setne manages to subdue Carter and Zia and reveals that he intends to force Apophis to obey his commands, having needed their help only to get the shadow. The timely arrival of Sadie foils Setne's plan, but he somehow manages to escape with the Book of Thoth and the dangerous magic within. The magic that Setne taught the Kanes enables them to destroy Apophis forever and restore Bes, but they are left concerned by the implications of his escape. Julius states that Setne was bound to get away again and that the best they could've hoped for was that he would help them long enough to get the shadow and the spell.
In Demigods & Magicians, Setne begins using hybrid Greek-Egyptian magic from the Book of Thoth, repeatedly drawing the attention of the Kanes, Percy Jackson and Annabeth Chase to stop him. In The Crown of Ptolemy, Setne enacts his ultimate plan by stealing the crown of Egypt and the power of the goddesses Wadjet and Nekhbet to finally become a god himself. Unable to defeat Setne with their individual powers, the Kanes, Percy and Annabeth share their powers with each other so that the demigods are using magician abilities and the magicians are using demigod abilities which proves to be highly effective against Setne, allowing them to retrieve the Book of Thoth. In a final effort, the Kanes and Annabeth perform a spell from the Book of Thoth to imprison Setne while Percy becomes the host of Nekhbet to fight Setne directly. Ultimately, after falling into the ocean, Percy's natural power from Poseidon combined with his borrowed power from Nekhbet allows him to overpower Setne and strip him of all of his stolen power. However, Percy chooses not to destroy Setne as he is not the kind of person to do that despite Nekhbet pushing him to do it. The completed spell then traps Setne forever inside of a snow globe which becomes a paperweight on Carter's desk.
In the Brooklyn House Magician's Manual, Setne is shown plotting to escape after his prison is accidentally cracked by one of Sadie's spells after which he intends to take the Book of Thoth, travel into the Duat and finally become a god. However, his eventual escape is actually anticipated by the Kanes and engineered so that it doesn't happen when no one's watching which would be bad for everyone. Although Setne causes some minor chaos, he is tracked by Walt and Anubis who, due to Anubis' powers over death, are able to track him even while he's invisible. Setne is ultimately trapped in a mastaba and bound by multiple containment spells to contain him until he faces judgment in the Underworld.
Magnus Chase is the main protagonist of the series and is the cousin of Annabeth Chase. A 16-year-old Bostonian teenager, Magnus lost his mother Natalie Chase to a mysterious wolf attack two years prior to the events of The Sword of Summer and is forced to live in the streets with his homeless friends, Blitz and Hearth. On his 16th birthday, his uncle, Randolph informs him of his divine parentage as a son of a Norse god and his inheritance of Sumarbrander, the sword that once belonged to his father Frey. After being killed by Surt, a fire giant, Magnus is then carried to Hotel Valhalla by Samirah Al-Abbas, a Valkyrie. He then finds out that his father is Frey, the god of peace, wealth and prosperity, who belongs to the Vanir tribe of Norse deities.
Magnus is described as having blond hair that reaches his chin and haunting gray eyes that resemble his cousin, Annabeth's. He is said to look like Kurt Cobain and has asthma. His scrawny look is replaced by a more muscular persona after his death and acceptance to Valhalla. He is quite street smart due to the two years he spent as a homeless child and as a result, is not quick to trust people. Nevertheless, he considers Blitz and Hearth as the only friends he is completely loyal to, and after a while, also begins to ease up and trust Sam. He is also known to have a budding relationship with another child of Loki named Alex Fierro. He is not fiery nor quick to anger.
As a son of the god of fertility, Magnus does not excel in offensive power. Instead, he usually thinks strategically to safely escape from danger. When he does have to attack, he mainly uses the Sword of Summer, Jack, who attacks autonomously. Magnus' demigod abilities concern healing and warmth: through concentration, Magnus is able to heal even the mortally injured (though doing so often causes him to read the subject's memories) and once made a mortal (Sam's fiancé) see through Ginnungagap and into the Norse world. Magnus can also summon the Peace of Frey that can disarm everyone who is close to him.
Blitzen (Blitz) is a 20-year-old dwarf or, more specifically, a svartalf from Nidavellir. He is the son of a Vanir, Freya, making him Magnus' cousin, and a dwarf, Bilì, who was eaten by Fenris Wolf while checking Fenris's prison rope. He is sent alongside Hearth by Mimir to watch and protect Magnus. Though he keeps it up for two years, the task fails when Magnus is killed, but Blitz continues to look for him until they are reunited in Valhalla. As a dwarf, Blitz is sensitive to sunlight and will slowly turn to stone if exposed too much, which is why he always wears a copious article of clothing whenever there is sunlight, except in Folkvanger, in which sunlight is replaced by an aura radiated by Freya instead. Instead of forging, Blitz excels in clothing design, making him a laughing stock among his fellow dwarfs, but after he wins a match against Eitri Junior, he becomes respected and eventually opens up a clothing shop. In battle, Blitz uses his creations to assist himself, including chain-mail bow ties and vests. Blitz has had a strong relationship with Hearth ever since the former saved the latter's life, and the two are very protective of each other.
Hearthstone (Hearth) is a light elf from Alfheim. He is skinny with pale skin and with short spiky blond hair, which, when combined with his black leather jacket, jeans, and a candy cane scarf, "makes him look like a character from a Japanese anime". Hearth is deaf and can only communicate with ASL (Alf Sign Language) and he has *trauma*, though he is able to read lips. Since his "home" world is always bright, he is sensitive to darkness. Like Blitz, Hearth makes a deal with Mimir to drink water from Mimir's Well by one of the roots of Yggdrasil to gain knowledge about runes and in return has to work with him for several years. He becomes a companion and protector of Magnus from then on. Hearth is the first elf in a long time to focus on magic from runes, which he has studied extensively. He can cast various runes, though doing such consumes his energy. Eventually, he progresses to the rank of a full sorcerer.
Hearth has a traumatic past, as he is effectively unwanted by his parents, who shun him for being deaf and not as great as his brother, Andiron, who died young; he is forced to face his past in the second book, when he has to collect the Skofnung Stone from his father, Alderman, who wants him to finish the blood tax imposed on him as repentance for Andiron's death. He is also reminded that sooner or later, he will have to take the othala rune from Andiron's place of death, which he planted as a reminder of his past, to complete his magic arts. In the third book, Hearth decides to take othala, using it to summon Andiron's spirit to distract his father long enough for Magnus to pierce his heart. Despite all that Alderman put him through, Hearth is shown to have conflicted feelings on his father, wanting to kill Alderman after finding him as a dragon out of a sense of mercy and then not being sure on whether or not to eat the dragon's heart and gain all of his father's knowledge and wisdom. After Magnus accidentally burns the heart in a fire, Hearth is relieved to have the burden removed from himself. His relationship with his friends helps him. and he even once calls Magnus "brother" with Magnus returning the sentiment during his flyting with Loki. At the end of the first book, Hearth is freed from servitude and begins learning runes from Odin.
Samirah (Sam) al-Abbas Bint Loki is a Valkyrie and daughter of Loki who selects Magnus as an einherji under Odin's order. She is an Arab American who normally wears her Valkyrie armor and a green hijab, which doubles as camouflage. She leads a double life as both a Valkyrie and a normal high schooler. She does not worship the Norse gods as she is Muslim and believes in Allah. Her family is from Baghdad, but has been raised by her grandparents in Dorchester since the death of her mother. Sam's family already had a long history with the Vikings, even before her mother met Loki; Ahmad ibn Fadlan, a historian and envoy of the Abbasid Caliph to the Kievan Rus', is one of Sam's ancestors, and the Varangians have since intermarried with Sam's family. The Norse also distrust her for being Loki's daughter. Sam is married to her childhood crush, Amir Fadlan, who works in a falafel shop.
In The Sword of Summer, Sam is expelled from Valhalla when her video of Magnus' Heroic death is edited by Gunilla, but later joins Magnus, Blitz, and Hearth in stopping Fenris Wolf from breaking free. She is eventually reinstated as Valkyrie and gets another job as Odin's personal aide. In The Hammer of Thor, Sam is unwillingly betrothed by Loki to Thrym in exchange for Mjolnir; in reality, Loki wants the Skofnung, with which he can finally free himself. Sam is then given a task by Odin to head towards Scandinavia and personally imprison Loki back before he is able to invade Midgard and eventually Asgard. In The Ship of the Dead, Sam participates in the quest to stop the Naglfar from sailing in Niflheim and has sufficiently trained with Alex enough that she is immune to Loki's influence. The quest is challenging for her not only because of its danger, but also because she is fasting for Ramadan.
As a fighter, Sam wields a Valkyrie axe or dagger. She has also inherited her father's ability to shapeshift into animals, but doing so makes her uncomfortable, as it causes her to become more like her father. Sam wants to become a pilot and enjoys being a Valkyrie because it affords her a chance to fly (albeit through levitation, not piloting).
The Sword of Summer (Jackass) was Frey's weapon, currently wielded by Magnus Chase. After Magnus finds out that the sword is sentient, Sumarbrander decides to name itself Jack, and be referred to as a male. In battle Magnus can let the sword attack his enemies on its own or use his own strength and control the sword himself. Either way, it is Magnus who loses energy ultimately, though this loss is delayed until he next grips or sheathes Jack.
He bears a grudge against Frey, who 'abandoned' him, by giving him to Skirnir as a price for the latter bringing the former a Giantess with whom he fell in love; he summarises this by once admonishing Frey, saying 'blades before babes'.
He reached Boston with one of Skirnir's descendants during the Viking expansion, where he was lost for centuries until he was recovered by Magnus.
Introduced in Magnus Chase and the Hammer of Thor, Alex Fierro is a child of Loki (mother) and Mr. Fierro (father). She/he is gender-fluid, similar to Loki, who was known to change genders in myths. She/he prefers pronouns coinciding with her/his gender at the moment rather than "they". When in Valhalla, she/he is referred to as an argr, the Old Norse word for 'unmanly,' due to being assigned male but identifying as a woman most of the time. Unlike her/his half-sister, Sam, Alex was born via Loki's female form, thus making the god her/his mother rather than her/his father. Like Sam, she/he resents her/his mother; however, Alex seems to be able to resist Loki much easier than Sam. She/he, like Magnus, is homeless, in her/his case due to her/his father disagreeing with her/his gender-fluidity. Nevertheless, she/he treasures her/his Fierro heritage, an ancient family who had lived near Mexico City as potters since before the time of the Aztecs.
In The Hammer of Thor, Alex goes to Jotunheim alongside Magnus and the others to visit Utgard-Loki and find out about Loki's plan about Sam's betrothal. She/he becomes Sam's double during her betrothal and forms a friendship with Sif. In The Ship of the Dead, Alex has trained Sam to resist Loki's influence and participates in the quest to Scandinavia to stop Naglfar from sailing. She/he grows closer with Magnus and kisses him when the group is struggling to reach Skadi's fortress in Niflheim. The kiss is recounted by Magnus during his fighting with Loki as the greatest thing to have ever happened to him. By the end of the book, she/he assists Magnus in running the Chase Space, a shelter for the homeless youth.
Alex uses a gold garrote wire as a weapon, which formally used to be a pottery wire. She/he can shape-shift into animals, like Loki, and is far more comfortable with embracing this power than her/his half-sister, Sam.
The Norse gods fall into two general groups: the Aesir and the Vanir. All are referred to generally as "Asgardians", but the Vanir inhabit Vanaheim as often as Asgard. The Aesir are more warlike, while the Vanir are peaceful. Specifically, however, the gods tend to be distinguished by what side they fought on during the Aesir-vanir war, and not by their personal temperaments.
The following Norse gods are considered the more warlike of the two strains of immortals.
These gods are generally more peaceful and dislike the warlike nature of the Aesir:
The following characters live and/or work in Hotel Valhalla and all answer to Odin. It is their duty to prepare an army for the day of Ragnarök.
The Valkyries are Odin's handmaidens who choose which slain Heroes should be brought to Hotel Valhalla. They also work as waitresses during feasts and provide room service to its inhabitants.
Mortals are human characters who live outside of the world of magic and gods, though some may be aware of their supernatural surroundings.
The following people have harassed the main characters: