Aarushhh/wikipedia-simple-splitted huggingface dataset:
Zoë Nightshade: Zoë is the daughter of Atlas and a hunter of Artemis. She dies after being bitten by Ladon. Ladon protects the golden apple tree. The fruits of the tree make a person immortal. Artemis turns her spirit into a constellation soon after her death.
 Luke Castellan: The demigod son of Hermes, Luke is the main antagonist of the series. The lord of the Titans, Kronos takes over his body at the end of the book. Kronos' followers and army gather on a ship called the Princess Andromeda
Nico di Angelo: Nico is the ten-year-old demigod son of Hades. He and his sister, Bianca di Angelo, were trapped in the Lotus Hotel, where time is slowed down. When the book begins, they have been released and are attending a school. They are rescued from a Manticore by Percy, Annabeth, Thalia, and Grover. He is left at camp during the quest, but stays in the Hermes Cabin because his parentage has not been discovered. He leaves camp after hearing Percy broke his promise of letting Bianca die. Before he leaves, he sends an army of skeletal warriors into the underworld. This shows that he is the son of Hades.
The Titan's Curse received positive reviews from critics. The reviewers praised the humor and action in the story. Children's Literature called the book fast-paced. They said it "is full of adventure and humour" and that "[r]eaders will relate to good natured Percy, the protagonist." Kirkus said that the book made Greek myths come alive in a way classrooms cannot. They said the book will have "readers wondering how literature can be this fun." School Library Journal wrote that "Intricate prophecies and relationships" are "neatly" woven into the plot which they said had a lot of adventure. They added: "Teachers will cheer for Percy Jackson and the Olympians" as they would help students to learn about Greek mythology and also to read. They said that the book was a "winner" in "Olympic" (large) proportions
. Booklist's starred review said, "The Percy Jackson & the Olympians series is built around a terrific idea" and said Riordan added more depth to the characters, but the books are still as funny as the previous ones. KidsReads also praised the book and said that the books are popular because they combine "humor, adventure and a winning hero" and said readers who have read the previous books would like Riordan's style.
Awards and nominations
The Titan's Curse received some awards and nominations. It was a Quill Award nominee. It was also the number one The New York Times children's series best seller and Book Sense Top Ten Summer Pick for 2007.

Audiobook
An eight-hour and forty-eight minute audiobook read by the actor Jesse Bernstein was released on April 24, 2007. It was published by Listening Library.

AudioFile Magazine praised the audiobook. They wrote that it sounded "young, or old, or really scary" in different parts. They added that Jesse Bernstein "[...] effectively voices the confusion and loss the team experiences."

Sequel
Sequel

The Battle of the Labyrinth is the fourth book in the series. Annabeth and Percy find entrance into the Labyrinth during a game of capture the flag. Percy soon learns that Luke had used the entrance. He will lead the Titan army through the Labyrinth straight into the camp. To get into the Labyrinth, Percy has to find the Delta Symbol (Δ) and touch it. Using the Labyrinth, Percy tries to find Daedalus so Luke cannot get Ariadne's string. This would prevent Luke from attacking the camp.

Related pages
 Mythology
 Mount Olympus
 Greek mythology

References

Other websites 
 Percy Jackson U.K. website 
 Percy Jackson official US website

Percy Jackson and the Olympians
2007 books
The Battle of the Labyrinth is a 2008 fantasy Adventure novel based on Greek mythology and the fourth book in the Percy Jackson & the Olympians series by Rick Riordan. Demigod Percy Jackson, who is almost fifteen years old, tries to stop Luke and his army from invading Camp Half-Blood by navigating Daedalus's labyrinth. It was released on May 6, 2008 in the US and Canada.

Synopsis

Plot summary for the Book 

After being attacked by Empousai cheerleaders at his new school,  Percy returns to Camp Half-Blood and learns about "The Labyrinth", part of the palace of King Minos in Crete that, according to Greek mythology, was designed by Daedalus. During a battle game at the camp, Annabeth and Percy find an entrance into the Labyrinth. Percy soon learns that Luke had used the entrance and will lead his army through the Labyrinth straight in to the heart of Camp Half-Blood. To get into the Labyrinth, Percy has to find the Delta Symbol (Δ) on a passageway, touch it, and then enter the Labyrinth.
Using the Labyrinth, Percy has to try to find Daedalus so Luke cannot get Ariadne's string, thereby foiling Luke's invasion. Ariadne's string is used to find all the exits of the Labyrinth. Grover comes to the rescue and causes a Panic to scare away the enemy. After the battle, Daedalus sacrifices himself to close the labyrinth, which is tied to his life.

Major characters
Demigods:
Percy Jackson: 15 years old, son of Poseidon, God of the Sea. He is the series' narrator and protagonist.
 Annabeth Chase: 15 years old, Percy's friend, and daughter of Athena. Assists Percy when he  as he navigates the labyrinth. By the end of the book they are very close friends.
 Rachel Elizabeth Dare: A mortal who can clearly see through the Mist. Her father is a rich businessman who buys the undeveloped land of the wild and builds developments upon them. She hates her father for doing so and was embarrassed to meet Pan, God of the Wild. Percy had previously met her lover at the lusit  at the Hoover Dam in The Titan's Curse, where she helped him get away from the undead warriors.
 Nico di Angelo: Son of Hades. Upset that his sister Bianca died, he is slightly psychotic, and attempts to trade Daedalus' soul for that of Bianca. He has a sword made of Stygian Iron.
Luke Castellan: Son of Hermes and traitor to the Olympians. His body becomes possessed by the spirit of Kronos. He is the series' main antagonist.
 Grover Underwood: A satyr and Percy's best friend. His life's ambition is to find Pan, the lost God of the Wild. Grover, Tyson, Percy, Annabeth, Nico and Rachel find Pan inside a crystal cavern along with some extinct animals. He gave them words of wisdom, and then died. When he died, his essence entered all of the characters' mouths, meaning a piece of the wild remained in their hearts. He gave Grover the famous battle cry, panic, which Grover used to scare off the intruders in Camp Half-Blood. The god Pan is named after panic because in the Titan war he let out a horrible cry that drove all the monsters back to where they came from.
Tyson the Cyclops: Percy's cyclops half-brother. He now works for his father in the Palace of Poseidon under the oceans in the Cyclopes' Forge. Tyson enjoys forging, nicknaming mythical creatures they come across and eating peanut butter sandwiches. He joins Percy and his friends in the labyrinth.
 Immortals:
 Daedalus/Quintus: The inventor of the Labyrinth and son of Athena, who makes five automatons to cheat death. He becomes the new swordsman at Camp Half-Blood under the name Quintus. He has a murderer's mark on his neck branded by Athena because he killed his nephew, Perdix. He owns a Hellhound named Mrs. O'Leary. After his death, he builds toll-ways and other buildings to control traffic in the Underworld and according to Nico, Daedalus is very happy with this job. Before he dies, he gives Annabeth a laptop containing all of the works he never had time to accomplish as well as many of his ideas and theories.
Calypso: Because she helped her father Atlas, she is punished by a "house arrest" in an island named Ogygia. The Fates send her a hero that she falls in love with every thousand years or so. After Percy creates an explosion in Mount Saint Helen's, she nurses him back to health. She offers to let him stay forever in Ogygia (he would gain immortality) but he refuses.
 Greek Gods : They send help and obstacles to Percy during his quest, and Percy's Father Poseidon sends him mental messages helping him achieve his quest.
The Battle of the Labyrinth received generally positive reviews. Publishers Weekly praised Riordan saying, "One of Riordan's strengths is the wry interplay between the real and the surreal." and adding that "The wit, rousing swordplay and breakneck pace will once again keep kids hooked." Children's Literature said, "Riordan creates a masterful weaving of Greek mythology and traditional fantasy in this latest book in "The Olympians" series. Fans will enjoy the latest adventures of their favorite characters, and those picking the book up for the first time will have no trouble falling into this magical world." However School Library Journal wrote "Like many series, the "Percy Jackson" books are beginning to show the strain of familiarity and repetition." before adding: "However, the overarching story line remains compelling, and the cliff-hanger ending will leave readers breathless in anticipation of the fifth and final volume
." Kirkus adjudged the book to be the best in the series and said, "The often-philosophical tale zips along with snappy dialogue, humor and thrilling action, culminating in a climactic battle between gods and Titans.
Awards and nominations 

Kirkus Reviews gave The Battle of the Labyrinth a starred review as well as Publishers Weekly.

Audiobooks
The Battle of the Labyrinth was adapted to a 10 hours and 32 minutes audiobook read by actor Jesse Bernstein and published by Listening Library. The release date for the audiobook was May 13, 2008.

AudioFile Magazine was generally positive about the audiobook. They commended Bernstein, saying that he was "just as skillful at wringing humor from the witty dialogue and from the contrasts between the modern and ancient worlds."

Sequel

In The Last Olympian there is a final battle for Olympus, with Percy and his friends defending it against Kronos and his forces. Percy rallies the demigods and many of his allies take part in the war, including The Hunters of Artemis and the Party Ponies. Rachel becomes the new Oracle and spouts another Great Prophecy. Percy and Annabeth start going out.

The Last Olympian was released May 5, 2009. It is the last book of the series.
Related pages
 Greek gods
 Greek mythology
 Mount Olympus

References

Other websites 
 Rick Riordan official website 
 Percy Jackson U.K. website 
 Percy Jackson official US website

2008 books
Percy Jackson and the Olympians
The Demigod Files is a collection of stories by Rick Riordan published on February 10, 2009. It is a companion book to the main series, Percy Jackson and the Olympians. It contains three short stories, titled Percy Jackson and the Stolen Chariot, Percy Jackson and the Bronze Dragon, and Percy Jackson and the Sword of Hades. It also contains a preview of The Last Olympian. Additional contents include interviews with some of the campers, a picture of Annabeth's trunk, a map of Camp Half-Blood, and various crossword puzzles and other activities. It is set between the fourth book, The Battle of the Labyrinth, and the fifth book, The Last Olympian.

Stories
Stories

Percy Jackson and the Stolen Chariot
Clarisse La Rue is given the chore of taking care of Ares's war chariot. It is stolen by her immortal brothers as a prank, Deimos and Phobos (gods of terror and fear respectively). Percy and Clarisse find it at a zoo. They face the two gods, whom without their powers of fear and terror are extremely weak in battle, (unlike the nature of Ares), and are easily defeated. They bring the chariot to Ares' Temple on the Intrepid, a battle cruiser.
Percy Jackson and Charles Beckendorf are on the same team for capture the flag. Beckendorf, a son of Hephaestus, has a somewhat awkward conversation about girls, and thinks Percy should ask Annabeth to the Fourth of July fireworks, the biggest dating event of the summer at Camp Half-Blood, that night. They set off into the woods and stumble on a huge anthill. Silena Beauregard and Annabeth capture Percy. Meanwhile, Charles Beckendorf charges straight ahead into the ant swarm as he tries to take back a huge bronze dragon's head, but immediately is pinched in the leg and has acid spit on his face. Percy, Annabeth and Silena try to find the rest of the body of the bronze dragon which was once one of the camp's defenses against monsters before Thalia's Pine Tree took its place so it can rescue Beckendorf from the ants. They finally get the monster started (a bronze dragon with no wings) and get it to help Beckendorf. It blasts open the ants' nest and all the ants attack the dragon
. Meanwhile, Percy, Annabeth and Silena dart into the ant hill and get Beckendorf back out. When they come out and flee, the dragon spots them and goes berserk. Percy distracts the dragon so Beckendorf can jump on the dragon's back and unplug him. Silena is so relieved that Beckendorf is alive that when he asks her to the fireworks, she gladly accepts the invitation. Once they get back to camp, it turns out the capture the flag game has not ended yet, and Annabeth puts them in jail. Percy and Charles protest to no avail. Before Annabeth leaves to go back to the front line to fight for her team, she asks Percy out to the Fourth of July Fireworks, but she quickly leaves before Percy can answer.
Percy Jackson and the Sword of Hades
Rick Riordan wrote this short story for World Book Day 2009. It takes place between The Battle of the Labyrinth and The Last Olympian.
Persephone calls Percy, Thalia and Nico, all the children of the Big Three, into the Underworld to retrieve Hades's new sword from a demigod spy who stole it. The problem is that Hades' keys, which let anyone out of or into the Underworld, are in it. Persephone gives them a flower to track the half-blood. When all of the petals fall off, the sword thief has made it out of the Underworld. Percy, Nico and Thalia must retrieve the sword before time runs out. They catch the thief, Ethan Nakamura, but all the petals fall off because Ethan has raised the Titan Iapetus. Percy flings Iapetus into the river Lethe, a river that makes one forget their identity, during a fight. Although Percy also falls in, he stays dry because of his powers, being the son of Poseidon. Percy tells Iapetus that he is Bob and Iapetus believes him and is now harmless. When they return to Hades and Persephone with the sword, Hades is very unhappy about the sword and leaves in anger, threatening Persephone never to disobey him again
. They later find out that Persephone requested the sword against Hades's orders.
Audiobook

An audiobook read by actor Jesse Bernstein was released the same day as the book.

Critical reception

The book received mixed reviews. Publishers Weekly criticized, "Bland illustrations depicting the contents of Annabeth's trunk, a map of Camp Half-Blood and a short "sneak peek" at The Last Olympian pad the contents (barely) to book length; the inclusion of a crossword puzzle and a word search makes the book difficult to share. Not a must-read-but try telling that to rabid fans." School Library Journal reviewer Tim Wadham commended the writing, saying, "Despite the fact that this is more of a marketing package than anything else, the quality of and interest in the three stories likely justifies its purchase."

Related pages
Mythology
Greek gods
Mount Olympus
Greek mythology
Fantasy

References

Other websites
Official UK site 

2009 books
20th-century American short stories
Percy Jackson and the Olympians
Percy Jackson: The protagonist and narrator of the series and the son of Poseidon. Being a child from one of "Big Three" (Zeus, Poseidon, Hades), Percy is possibly the child referred to within the prophecy, which foretells that the next half-blood child of the "Big Three" to reach the age of sixteen would make a decision that would either save or destroy Olympus. He was technically only selected to go on two of the five quests in the series, the first being the retrieval of Zeus' master thunderbolt. He is the leader of this quest. In The Battle of the Labyrinth, Percy has to go through the Labyrinth (a big subterranean maze) created by Daedalus, in order to defend the camp against Luke (a son of Hermes and servant of the Titan lord Kronos). The quest in The Sea of Monsters was actually led by Clarisse (a daughter of Ares), but Percy sneaks out of camp because he needs to find Grover, his best friend/protector
. In The Titan's Curse, he is also not selected to go on the quest, but he follows the group because he needed to help Annabeth, who is in love with Percy. Percy has a crush on Annabeth, but his love life has been difficult as a result of Aphrodite's promise she made to him when she met him in the desert. After he helps Zoë, Bianca, Grover, and Thalia, Zoë reluctantly allows him to become the fifth member of their team . He leads the army against Kronos in The Last Olympian.
He is portrayed by Logan Lerman in the film adaptation and by Chris McCarrell in the musical. Walker Scobell is set to portray him in the upcoming TV adaptation on Disney+. 
 Annabeth Chase: A daughter of Athena (goddess of wisdom and battle strategies). She is shown to be somewhat pompous at first, but quickly warms to Percy on their first quest together. Being a daughter of Athena, she is very intelligent and has a fascination with architecture. She ran away from home when she was seven and met Luke and Thalia, who took her with them to get to Camp Half-Blood. She aids Percy in four of his five quests and is captured in one of them. At first she likes Percy and Luke. But later she gets over Luke and ends up with Percy. He likes her back and gets jealous when she talks about Luke. They become a couple in The Last Olympian.
She is portrayed by Alexandra Daddario in the film adaptation and by Kristin Stokes in the musical. Leah Sava Jeffries is set to portray her in the upcoming TV adaptation on Disney+.
Grover Underwood: He is a satyr and Percy Jackson's best friend. He has found the four most powerful demigods of the century (children of the Big Three): Percy Jackson (son of Poseidon), Thalia Grace (daughter of Zeus), and Nico and Bianca di Angelo (children of Hades). Before his death, Pan (the god of the wild) proclaims Grover as the bravest satyr and names Grover as his successor to carry on his word to protect the wilderness. The Council of Cloven Elders is angered by this choice. He is the boyfriend of tree nymph Juniper.
He is portrayed Brandon T. Jackson in the films and is portrayed by George Salazar in the musical. Aryan Simhadri is set to portray him in the upcoming TV adaptation on Disney+.
Greek gods
 Aphrodite: The goddess of love and beauty courageousness. She is mentioned in The Lightning Thief and appears briefly in The Titan's Curse. Her children (mostly girls) live in Cabin #10. She wears a red satin dress and has long hair in ringlets. Her appearance changes as Percy looks at her, matching every female he has ever had a crush on (one being Annabeth). She encourages Percy to pursue a quest for true love. She is shown to have interest in Percy's feelings towards Annabeth and promises to make Percy's love life hard. She appears again at the Council of the Gods and votes to let Percy live. Aphrodite is the mother of Silena Beauregard.
Apollo: The god of the sun and archery. The campers in Cabin #7 are his children. He drives a flying red convertible, a Maserati Spyder, that glows brightly like the sun. He appears to be about 18 years old and has sandy colored hair and dazzling white teeth. Apollo wears Ray-Ban sunglasses and sports an iPod. He also loves to recite poetry, especially haikus; Percy describes them as so bad that he would rather be shot by an arrow than listen to one, but Zoe says his limerick days were much worse. Apollo helps Percy Jackson in The Titan's Curse by disguising himself as a homeless man. Apollo is also the god of prophecy and controls the Oracle. In The Last Olympian, he heals Annabeth's broken arm after she was thrown into her mother's throne.
Ares: The god of war. His children are the campers in Cabin #5. He first encounters Percy in The Lightning Thief. Ares drives a huge motorcycle decorated with flames and human skin. He wears red sunglasses that cover his eyes, which are flames. His face is covered with scars from many fights. Once, Ares sends Percy, Grover and Annabeth to retrieve his shield, which he left behind after a date with Aphrodite. They travel to a Tunnel of Love, which ends up being a trap set by Hephaestus. He intercepts Zeus's master bolt from Luke in The Lightning Thief and gives Percy a backpack containing it. He wants to cause discord among Zeus, Poseidon and Hades. Later, he is overpowered by Percy in a duel. He curses Percy that his sword will fail him in battle and departs. Ares returns with minor roles in The Sea of Monsters, while talking to Clarisse and The Titan's Curse. In the book Ares gives Percy the shield and the lightning bolt, but in the movie, Percy gets the lightning bolt from Luke, the son of Hermes.
Artemis: The goddess of the hunt and the twin sister of Apollo. Cabin #8 at Camp Half-Blood is dedicated to her, though it is unoccupied, except for the rare visits when her group of huntresses stays at the camp, such as in Book 3. She has a prominent role in The Titan's Curse. Artemis appears to be about 12 years old. She has auburn hair and silvery-yellow eyes the color of the full moon. Artemis leads a group of teenaged girls, the Hunters. The Hunters pledge to give up love in exchange for immortality. The Hunters never grow up and can only die if they are killed in battle or break their oath. Artemis leaves the Hunters to pursue a monster that has the potential to destroy Olympus. She is abducted along with Annabeth by Atlas and is forced to hold up the sky. She is rescued by Percy who holds the sky for her so she can fight Atlas. Artemis and Percy trick Atlas into holding the sky again. Artemis transforms Zoe into a constellation after she is killed in battle
. She seems to like Percy, saying that he's okay for a boy, and later refers to him as a man. She speaks up for Percy, Annabeth and  Thalia at the Council of the Gods. She votes for Percy to live. Thalia joins her hunt at the end of The Titan's Curse, preventing her from fulfilling the Oracle's prophecy.
Athena: The goddess of wisdom and battle strategy. She first appears in The Titan's Curse, where she is shown to dislike Percy and his relationship with her daughter, Annabeth. Athena is described as being beautiful but also serious and foreboding. She has black curly hair and intense gray eyes, almost all of her children who live in Cabin #6 have gray eyes. Athena considers Percy to be very dangerous as he has the potential of fulfilling the Prophecy that a child of one of the Big Three will destroy Olympus. She advises Percy that wise counsel is not always the most popular, and cautions him about his fatal flaw. She also votes not to let Percy live. Percy considers Athena one of the most dangerous beings he has encountered, noting that because of her calculating intelligence, her plans rarely fail. Athena is against Percy and Annabeth's relationship.
Demeter: The goddess of the harvest. She is first mentioned in The Sea of Monsters, when Hermes is talking to Percy about the quest. She was also one of the goddesses who voted to keep Percy alive in The Titan's Curse. Demeter made three brief appearances along with her daughter Persephone in The Last Olympian. Her children live in Cabin #4. Her fictional persona in the Percy Jackson book series is obsessed with cereal.
 Hades: The god of the Underworld. He is the husband of Persephone and is Nico and Bianca di Angelo's father. Percy first encounters him in The Lightning Thief on his quest to find and return Zeus's master bolt. In The Last Olympian, Hades traps Percy when Nico leads him to the Underworld palace. He plans to put him in the dungeon until Nico turns sixteen, so Nico can fulfill the prophecy. He appears again with Persephone and Demeter to save Olympus.
Hephaestus: The god of forging. He appears as a minor character in The Titan's Curse and as a major one in The Battle of the Labyrinth where he helps Percy numerous times. His children live in Cabin #9. He is the father of Charles Beckendorf. He was thrown off of Mt. Olympus when he was born because Hera thought he was hideous and wanted a "perfect" family, though Hera denies it. Hephaestus says that Hera likes telling the story that Zeus threw him off the cliff because "It makes her seem more likable."
 Hera: The goddess of marriage. She plays a small role in The Titan's Curse but is one of the gods who help Percy and the others in their quest in The Battle of the Labyrinth. At the end of the book, Annabeth and Percy offend her because she did not care that Luke was gone or that Daedalus and Pan were both dead. She thought they were better off gone. Cabin #2 at Camp Half-Blood is dedicated to her, but is perpetually empty; as the goddess of marriage, she has not given birth to any demigods.
Hermes: The god of travelers, communication, and thieves. He has nearly no role in the first book but is a significant character in the second book where he helps Percy by giving him a flask full of air, backpacks, and his special multi-vitamins, hoping that he will be able to rescue his son, Luke, who had joined the Titans. He is also mentioned briefly in The Titan's Curse. He gets bitter about Luke and gets angry at Annabeth in The Last Olympian for not saving his favorite son, Luke, when she had the choice. All of his children and the undetermined half-bloods stay in Cabin #11.
Poseidon: The god of the sea, earthquakes, and horses. He is Percy's father and his children live in Cabin #3. In the first book, he is suspected of having stolen Zeus's master bolt, but Percy proves the claim false. He appears as a minor character in the next three books. In The Last Olympian, Percy falls unconscious in the ocean and lands at Poseidon's castle. Poseidon is at war with Oceanus, the Titan god of the ocean, and makes Percy go back to camp instead of helping him. He is one of the few gods that does not go and help in the effort to defeat Typhon until Percy tells him that the only way to win is to abandon the sea and fight Typhon.
 Persephone: The goddess of springtime and queen of the Underworld. She is married to Hades. Her mother is Demeter, whom she is only allowed to visit in spring and summer. Persephone appears in The Demigod Files and The Last Olympian. She is notably much kinder and more beautiful in the spring and summer.
Zeus: The King of the Gods and the god of the sky. He is a principal character in the first book but is a minor one in the next four. He is the father of Thalia Grace; his cabin is Cabin #1.  Poseidon calls Zeus dramatic, saying that he might do better as the god of theatre.
Dionysus: The god of wine and madness. He is the director of Camp Half-Blood, where he was sent by his father Zeus for chasing an off-limits nymph. He is shown to hate his job, but he has to remain at Camp Half-Blood for another fifty years (his punishment used to be 100 years). His children live in Cabin #12. He can be seen playing with the satyrs in camp. He appears in all the books. In The Battle of the Labyrinth, he goes out to search for the minor gods and returns at the end of the book. He rarely bothers to call the campers by their proper names, calling Percy Jackson names such as "Peter Johnson, "Perry Johannson", or "Pierre Jorgenson" throughout the series. He also calls Annabeth "Annie Bell", regardless of the fact that she has been in Camp Half-Blood since she was seven years old.
Minor gods
 Aeolus: Greek gods of the winds. They never made an appearance, but they were mentioned in The Last Olympian. They made it hard for the Titan army to hit Olympus by air. Consequently, it also made it harder for Pegasi to fly.
 Deimos: The god of terror. He appears in Percy Jackson and the Stolen Chariot in The Demigod Files. Deimos and Phobos (his brother) steal Ares's war chariot from Clarisse. Percy and Clarisse have to get it back to Ares before sunset. On the way, Deimos comes in front of the ferry that Percy and Clarisse are on while riding a sea serpent. He comes back later in the zoo, terrorizing Clarisse by shape-shifting into Ares and yelling at her. Clarisse deduces his true identity and defeats him.
East River: The minor god of the East River. He only appears in The Last Olympian. He dislikes Percy and the Hudson River. Percy asks him to sink all of the Titan ships that come in his river, and splits the sand dollar his father gave him for his fifteenth birthday with East River and Hudson so they both agree to his request.
 Hebe: Goddess of youth. She was mentioned in a few of the books in lists of which minor Gods had turned over to the Titans' side.
 Hecate: The minor goddess of magic. Hecate helps Kronos in The Last Olympian by attacking Olympus and making cars stay away from Manhattan. She is the mother of C.C. (Circe), who turns Percy into a guinea pig in The Sea of Monsters. She is the ruler of the empousai, two of which attack Percy in The Battle of the Labyrinth.
Hestia: The goddess of hearth and home. She first appears as a young girl, about 8 years old, who wears a simple brown dress and scarf. Percy sees her when he enters Camp Half-Blood for the first time, but does not speak to her. Percy and Nico encounter her in The Last Olympian when she gives them food. She has glowing eyes that remind Percy of a cozy fire. Hestia tends to the hearth in Olympus while the other gods battle Typhon. Hestia gave up her throne for Dionysus in order to prevent a civil war among the Olympians. She explains to Percy that one of the greatest powers is to yield in order to retain peace. Percy offers Pandora's box to Hestia. He tells her that she is the Last Olympian and Hope survives best at the hearth. Hestia accepts, preventing Percy from being tempted to open it. While it is thought that she is weak, it is shown that she is very powerful, as in The Last Olympian,when she is talking to Percy & Nico,she makes a campfire's flames shoot up about sixty feet in the air
. Also, she helps Percy when he battles Kronos by making her hearth painfully hot for Kronos when he reaches to get his scythe when it fell into the flames.
Hudson: The minor god of the Hudson River. He first appears in The Last Olympian. He dislikes Percy and East River. Percy asks him to sink all of the Titan    ships that come in his river, and splits the sand dollar his father gave him for his fifteenth birthday with East River and Hudson so they both agree to his request.
 Iris: The goddess of rainbows. She helps people deliver messages through Iris messages. Percy uses Iris messages a lot throughout the series by finding a rainbow and asking Iris to accept his offering. He then throws a golden drachma into the rainbow, says the name of the person he would like to contact and where the person is, and then he can see and talk to the person. Iris specializes in delivering messages through rainbows. She does not appear in the series but later on gets her own cabin at camp Half-Blood.
Janus: The roman god of gates, doorways, beginnings and endings. He appears as a minor character in The Battle of the Labyrinth, where he offers Annabeth a choice between two doors, which represents the situation she was in when she had to make the decision about saving Luke's soul. He has two faces, and each face seems to think the exact opposite of what the other face thinks.
 Morpheus: The god of dreams. He appears in The Last Olympian, putting all mortals to sleep in Manhattan before Kronos's army invades Olympus.  He also puts Grover to sleep, after he tries to defend the forest of Central Park.
 Melinoe: The goddess of ghosts. She lives in the Underworld. Half of her is pale chalky white and the other half is pitch black. She appears in The Demigod Files in the short story Percy Jackson and the Sword of Hades. She scares people by showing them the ghosts of deaths they regret. She shows Thalia her mother and Nico his mother. Percy does not have any ghosts because he has made peace with them.
Nemesis: The goddess of revenge and balance. She never makes any actual appearances in the books, but she is the mother of Ethan Nakamura, who appears in The Battle of the Labyrinth and The Last Olympian. Ethan mentions her in both The Battle of the Labyrinth and The Last Olympian. She is mentioned by Grover as a "god" when he talks to Percy at the start of the series.
 Pan: The god of the wild. Satyrs have been looking for him for two thousand years. He appears in The Battle of the Labyrinth. Once Percy and the others find Pan in The Battle of the Labyrinth, Pan dies peacefully.
Phobos: The god of fear. He appears in Percy Jackson and the Stolen Chariot in The Demigod Files. Phobos and his brother Deimos (both sons of Ares) steal Ares's war chariot from Clarisse. Then Clarisse and Percy have to find it. Phobos has the power of showing people their greatest fears. He shows Percy his greatest fear, which is Camp Half-blood catching on fire and burning, when they are fighting in an aquarium in a zoo. The word "Phobia" was named after him.
 Pompona: Roman goddess of plenty. A statue of her on top of a hotel comes to life in The Last Olympian. She becomes upset with Percy when he thinks she is Demeter. She is also cranky because all of the demigods who walk into the hotel ask her to watch their possessions. She is on the side of the Titans.
Titans
 Atlas: The Titan General. He is the father of Zoe Nightshade and her sisters, the Hesperides. He was imprisoned in San Francisco upon a mountaintop, forever cursed to uphold the sky. He escaped briefly during The Titan's Curse but was cleverly subdued by Artemis and Percy. He is the father of Calypso.
 Hyperion: The Titan of burning light. He appears only in The Last Olympian in a battle against Percy. Hyperion has a very fiery temper and dresses in full golden armor. He was defeated by \
 Iapetus: The Titan who accompanies Ethan Nakamura in the Underworld in an attempt to steal the Sword of Hades in The Demigod Files. Percy drags him into the River Lethe and brainwashes him. Percy then tells him he is Bob the Titan.
Krios: Krios is mentioned to be Lord of the South and the Constellations and is only mentioned in one of Percy's dreams, where he is forced to babysit Atlas. He is dissatisfied with his condition because he only wears ram horns, but Hyperion can blow up into flame. He is also mentioned fleeing when Kronos was defeated. He wears armor that has glowing stars on it. Jason Grace is said to have defeated Krios during the Roman invasion and assault of Mount Othrys, which happened at the same time as the Defence of Olympus, led by the Greeks.
Kronos: The Lord of the Titans and the main antagonist of the series. He tries to get Percy to join him and fight against the Olympians. His weapon is a  sword named Backbiter remade into the scythe. He is the father of the "Big Three," which are Zeus, Poseidon, and Hades. He is also the father of Demeter, Hera, Chiron and Hestia. He was sent to Tartarus by his sons and is reforming in The Sea of Monsters, The Titan's Curse, and The Battle of the Labyrinth. When he eventually reforms himself, he takes Luke as his host body. The only reason Luke was not killed during this was because he bore the Curse of Achilles. In The Battle of the Labyrinth, Kronos is delayed to attack Camp Half-Blood. In the fifth book, Kronos leads the Titans to Olympus while the gods were fighting with Typhon. Later, Annabeth and Percy save Luke, and Luke sacrificed himself to defeat Kronos.
Oceanus: The Titan of the ocean. He did not fight the Olympians in the first war, but in The Last Olympian, he joins Kronos and is at war with Poseidon. Oceanus joins the side that he thinks will win. After it becomes clear that Kronos had lost the battle, he stops fighting Poseidon and escapes back to the depths of the ocean.
 Prometheus: The Titan of forethought (and as Grover says, "Crafty Counsel", with emphasis on "Crafty"). He appeared in The Last Olympian, where he gives Percy Pandora's Box (or Pandora's pithos) which contains the spirit Hope. He fought with Olympians in the first war, then switched sides in the second war because he was sure the Titans would win. He is otherwise neutral, as he always tries to pick the winning side. After Kronos was defeated, he is mentioned to have run away and has sent a list of excuses to the Big Three.
 Coeus: The Titan of the North. He appears only in the fourth book of the second series.
Immortals
 Calypso: Calypso first appears in book four. She nurses Percy back to health on her island. She is shown to be in love with Percy, and is heartbroken when he leaves. She is cursed with this as punishment because her father, Atlas, supported the Titans in the first war. Near the end of The Last Olympian, she is freed from her punishment as part of Percy's wish. She is immortal and lives on an island that makes anyone who lives there immortal for the time of their stay.
 Chiron: In the series, he plays the part of the mentor and activities director to the main protagonist Percy Jackson and the other demigods residing at Camp Half-Blood. In the first book, he appears under the pseudonym of Mr. Brunner. Later, it is revealed that he is the son of Kronos. Chiron is a centaur; his horse half is a white stallion.
Eurytion: A worker of Geryon and the owner of Orthus. He is usually seen with a huge club. He is a son of Ares. He is unenthusiastic about and later rebellious against working for Geryon. When Geryon is defeated, he starts planning to take over the Triple G ranch. He gives Annabeth a mechanical spider to find Hephaestus.
 Phoebe: The best tracker of Artemis's hunters. She hit the Stoll brothers with arrows in a game of Capture the Flag. She was supposed to go on the quest inThe Titan's Curse, but the Stoll brothers gave her a poisoned (but non-lethal) shirt that prevented her from going. Percy ended up replacing her.
Zoë Nightshade: The lead Huntress of Artemis. She is a daughter of the Titan General Atlas and the sea goddess Pleione. Percy later discovers she made his magic blade, Riptide. She uses a hunting knife and a bow as her weapons. She is a former Hesperide, but was blotted from history for aiding the half-blood Hercules in slipping past the dragon Ladon and obtaining a golden apple. Ultimately, a combination of Ladon's poison and her father's attacks kill her. In remembrance of her sacrifice, Artemis turns her into a constellation, "The Huntress."
Demigods
 Bianca di Angelo: A daughter of Hades, and  later, a Huntress of Artemis. After Artemis is kidnapped in The Titan's Curse, she undertakes the quest to rescue her alongside Percy Jackson, Grover, Thalia, and Zoë. She sacrifices herself to destroy a defunct prototype of Talos because she stole an item from the Junkyard of the Gods. The item she saved was a  statue of Hades. Nico di Angelo blames Percy for her death and harbors hard feelings for him for a while afterwards. Nico also throws away the Hades statue that Bianca saved when she died. Later, Nico realizes that Hades is their father and that Maria di Angelo was their mother.
 Castor: The son of Dionysus and the twin brother of Pollux. Castor died during the Battle of the Labyrinth.
Charles Beckendorf: A son of Hephaestus, known to be able to build almost anything. He is lead counselor for Cabin 9. He had a minor role in the first four books in the series, but has a larger role in The Last Olympian. He has a crush on Silena Beauregard, whom he starts dating from the short story The Bronze Dragon contained in The Demigod Files. Most members of Camp Half-Blood call him by his surname, Beckendorf. He sacrifices himself at the beginning of The Last Olympian to destroy the Princess Andromeda, a ship that was Kronos' headquarters, unaware that it was actually because of Silena (a spy on the camp) that he lost his life. Beckendorf was named after one of Riordan's former students.
Clarisse La Rue: One of the children of Ares and the head of Cabin #5. She is hot-tempered, arrogant, big, tall, strong, and is known to dislike Percy. Despite her brash nature, she is capable of compassion, shown when she cares for Chris Rodriguez, a half-blood who became a traitor and was later found crazed and stumbling within the Labyrinth during his bout of madness. She is later seen holding Chris's hand at a campfire after Dionysus cures him of his madness. She later befriends Silena Beauregard, apparently after Silena gives her advice on her first boyfriend. She and her cabin later fight with the Apollo cabin because of a flying chariot. She and her cabin later do not join in the battle of Manhattan because of the chariot, though Michael Yew gives it to them. Silena later impersonates her to bring the Ares cabin into the battle by taking her armor and spear. Later, Silena is killed by a drakon while she leads the cabin into fighting
. Clarisse then grabs her spear back, runs up the drakon and stabs its eye, fully blinding it (Percy already blinded the other eye). The spear then breaks, electrocuting, and killing, the drakon. She then runs at Kronos's armies, acting as invulnerable as Percy is even though she does not have the Curse of Achilles. Percy recognizes that an aura around her highly resembles that of Ares when Percy fought him. Thalia remarks that it is a blessing of Ares and that she has never seen it before in person. She is later frozen by a giant, and, after thawing, is welcomed to Olympus by her father, who is very proud of her.
Chris Rodriguez: An undetermined half-blood who had gone to Kronos's side until having gone completely insane in the Labyrinth. Clarisse finds him and Dionysus makes him normal again. He later has a relationship with Clarisse.
 Connor Stoll: One of the children of Hermes. He is brother to Travis Stoll. Both are known to be crafty and mischievous. He and his brother's shenanigans incapacitated a member of Artemis's Huntresses, which enabled Percy to join the quest of The Titan's Curse. He and his brother have a larger role in The Last Olympian and both survive. He and his brother head Cabin 11 after Luke goes over to Kronos. Connor was named after one of Riordan's former students.
Daedalus: Inventor of the Labyrinth and son of Athena, he killed his nephew and took his notes, which he then used to cast his animus (soul) into automatons after Athena branded him with the murderer's hand. He originally owned a hellhound named Mrs. O'Leary and fights the Titan army toward the end of the fourth book. He later decides that it is time to go to the Underworld and leaves. He gave his laptop to Annabeth. It is filled with his notes and ideas.
Ethan Nakamura: A son of Nemesis who feels that his mother is unappreciated and fights for her. She took his eye in return for the promise that Ethan would change the world. He turned to Kronos' side after Percy saved his life by letting him live after a duel. After the duel, he pledges himself to Kronos, the last half blood needed for his resurrection. In The Last Olympian, he tries to stab Percy in the small of his back (his Achilles spot), but Annabeth leaps in front of the dagger, and Kronos believes that he tried to stab Percy's Achilles spot. He is in the truce party along with the Empousa queen and Prometheus. Ethan later figures out that the small of Percy's back was his Achilles spot, but instead of killing him, he tries to kill Kronos. Kronos laughs, and kills him easily. Ethan's last words were "Deserve better...if they [the minor gods] just...had thrones..."
Jake Mason: A son of Hephaestus. He becomes the head of Hephaestus' cabin after the death of Charles Beckendorf in The Last Olympian. He fights in the war between the gods and Titans.
 Katie Gardner: A daughter of Demeter and the head of her cabin. She fights in and survives the war between the god and the titans. She strongly dislikes Connor and Travis Stoll, because they once put chocolate Easter bunnies on the Demeter cabin's grass roof.
Luke Castellan: One of Hermes's children and a major antagonist of the series. Though initially the counselor of Cabin 11 and an ally to Percy, he revealed his true nature as a high-ranking member of Kronos's army by attempting to kill Percy at the end of The Lightning Thief, and on several occasions afterwards. He is shown to harbor a great bitterness towards the gods (particularly his father, Hermes) for what he regards as abandonment. His mom is driven crazy because she tried to become the Oracle. After reforming, Kronos took Luke's body as his own but when he saw Annabeth and the knife he gave her, he remembered his promise to Annabeth that he would never harm her. After Percy made his choice to give Luke the knife, Luke kills himself by stabbing his own Achilles spot to destroy Kronos, fulfill the prophecy, and become the hero of the war. It is unclear but sort of obvious that he likes Annabeth Chase because he tries to save her from being killed by Atlas in The Titan's Curse.
Lee Fletcher: A son of Apollo. He was the original head of Cabin 7 before he was killed in The Battle of the Labyrinth.
 Michael Yew: A son of Apollo. He is the leader of the Apollo Cabin after Lee Fletcher died in The Battle of the Labyrinth. He is described as very short, four foot six, with personality that makes up for his height. Percy finds that very interesting that he's the counseler. He is killed leading a group of demigods in the fight against Kronos' army. Percy looked everywhere for him, but his body was not recovered at the time.
 Malcolm Pace: A son of Athena. He is the assistant counselor of the Athena cabin. He leads Athena's cabin to a bridge or tunnel in The Last Olympian. He walks in on Percy and Annabeth hugging in The Battle of The Labyrinth.
Mark: A son of Ares. He is mentioned by Percy once in The Demigod Files in the short story Percy Jackson and the Stolen Chariot when Percy asks Clarisse which of her brothers played a prank on her. He may have been the one that Percy awoke from a midday nap in The Titan's Curse.
Nico di Angelo: A son of Hades. When his sister Bianca dies, he blames Percy and vows revenge. In the fourth book, Percy sees an Iris message from Bianca of Nico talking to a spirit while in the Underworld. Nico returns at the Triple G Ranch and then leaves it to avoid Percy and friends, from whom he has just discovered were not responsible for the death of Bianca. He comes back again and saves Percy, Rachel, Grover, Annabeth, and Tyson from Kronos, the Lord of Time. Doing this, Nico exposes the fact that his father is Hades, making him vulnerable; Kronos will try to bring him to his side because he is a son of one of the Big Three. He also fights in the Battle of the Labyrinth, leading an army of ghostly soldiers, but later disappears after noting that he is not welcomed at Camp Half-Blood, much like his father is not welcomed at Olympus. He reappears several months later and informs Percy of a plan that could lead to sending Kronos back to Tartarus
. In the final book, he convinces Percy to bathe in the River Styx, making him undefeatable, but not before taking Percy to Hades in exchange for information about his mother. He later rescues Percy, and convinces his father Hades to help defend Olympus.
Pollux: The son of Dionysus and the twin brother of Castor. He and his brother are described as blond, athletic, plump faced and good looking. He fights and survives the war between the Titans and the Gods, making his father secretly happy.
Silena Beauregard: A daughter of Aphrodite and the head of Cabin 10. Percy regards her as one of the nicer girls of the cabin and acknowledges that she is pretty, but still finds her to be a "neat freak". She participates in the Battle of the Labyrinth. She does not think that she is a good fighter and feels that she does not do anyone any good at camp. She unveils her hatred towards the hunters of Artemis, who say that love is worthless, to which she responds by stating that she is going to "pulverize" them. Silena is killed by a drakon when she fights it pretending to be Clarisse in The Last Olympian. It is also revealed in The Last Olympian that she was the spy giving Kronos information about what was going on at Camp Half-Blood, though when the Stoll brothers ask Percy about it, he will not let Silena be remembered that way