Question: How many characters die in Sword Art Online?

List of Sword Art Online characters

List of ''Sword Art Online'' charactersThe following is a list of characters from the light novel, anime and manga series Sword Art Online. Most of the characters are introduced as gamers who play and consequently become trapped in a virtual reality massively multiplayer online role-playing game (VRMMORPG) Sword Art Online. The series chronicles their interactions in multiple online worlds: Sword Art Online (SAO), ALfheim Online (ALO), Gun Gale Online (GGO), and Underworld (UW).

Main characters
Kirito
Kirito(キリト,Kirito) / Kazuto Kirigaya(桐ヶ谷 和人,Kirigaya Kazuto)

Voiced by: Yoshitsugu Matsuoka(Japanese); Bryce Papenbrook (English)
As the main protagonist of Sword Art Online, Kirito was chosen to be one of the one thousand beta testers for the closed beta of Sword Art Online, the first ever Virtual;reality Massively Multiplayer Online Role-Playing Game (VRMMORPG) for the NerveGear, and later joined the official version of the game where he became one of the 10,000 players trapped in Sword Art Online. During the start of SAO, he befriended a girl named Asuna. During the 1st Floor Boss, as Illfang the Kobold Lord's weaponry and attack patterns differed from the beta, while the raid party relied on Argo's published beta test version of information about it, Diavel was killed by the monster while attempting to obtain the Last Attack bonus. Because of this, the hatred for beta testers resurfaced and threatened to go out of control. Kirito decided to end the tension by claiming that a majority of beta testers were inefficient and incapable players, while only a select few of the beta testers like himself resulted the creation of the category Beater and Kirito remained a solo player for majority of the game.
During the time Kirito spent in SAO, Kirito joined a guild named the Moonlit Black Cats, but he keeps his character's level a secret thus, this resulted the entire guild being killed by monsters and that led to Kirito wallowing in his despair and self-loathing until he read the time delayed message Sachi left for Kirito on Christmas Eve. This event refraining Kirito from joining another guild. Kirito befriended a girl named Silica and helped her revive her pet Pina. Later, Kirito meets a blacksmith named Lisbeth, who forges a new sword for Kirito after he unlocked a unique skill, Dual Blades although he kept it hidden to avoid attention however, he was forced to reveal it during 74th Floor Boss fight in order to save the people nearby as they couldn't leave by teleport crystal and defeating the boss. Later he was forced to join the Knight of Blood Oath after the revelation of his unique skill and accepted the duel against Heathcliff for allowing Asuna to go with him and lost. He soon begin to develop a relationship with Asuna and later married her in-game. Later, Kirito exposed Heathcliff as Kayaba after 75th Floor Boss. He faced him in a one on one duel with a condition; to allow every player to logout if Kirito wins, and manages to defeat him ending SAO with a total of 6,147 survivors.
Despite the completion of SAO,  Asuna remains unconscious and Kirito learned from Agil that Asuna is trapped in another virtual reality called Alfheim Online. Logging into Alfheim Online to rescue her, where he meets a player name Leafa, who is unknowingly, is his younger sister Suguha; who agrees to guide him to the head toward to the top of the giant World Tree, in order to get to Asuna. Arriving there and tried to get to the top of World Tree, but rescue by Leafa where he soon learns Leafa's identity as Suguha where Suguha reveals her feelings for him in the real world. Not knowing how to respond or comfort her, Kazuto tells her he will be waiting for her in game. When they meet up they engage in a fight which culminates with both of them letting down their guard expecting the other one to kill them, however that only leads to them hugging and apologizing to each other. Leafa lets go of her feelings for Kirito and after pulling herself together Leafa helps him rescue Asuna from the top of the world tree.
Eventually Kirito manages to reach to the top of the World Tree and see Asuna again where he was confronted by Sugou going by Oberon, binding them both with gravity magic. Oberon then stabbed Kirito with his sword, and then critically damaging Kirito by increasing Kirito's pain limit and impaling him. When the consciousness of Akihiko Kayaba reminded Kirito how he was defeated by Kirito's determination and give him his admin ID and password and remove Sugou's GM status, Kirito then blinds and dismembers him after setting Sugou's pain limit to the maximum declaring the pain was much more painful in SAO compared to ALO. After rescuing Asuna, he soon receives a program from Kayaba called the World Seed which revitalizes the VRMMORPG genre, after Kirito has it upload by Agil on the Internet.
Asuna
Asuna(アスナ,Asuna) / Asuna Yuuki(結城 明日奈,Yuuki Asuna)

Voiced by: Haruka Tomatsu(Japanese); Cherami Leigh (English)
The main heroine of Sword Art Online and main protagonist of the seventh volume, Asuna is a friend and later to be girlfriend and the in-game wife of Kirito in Sword Art Online and Alfheim Online. The sub-leader of the Knights of the Blood Oath, a medium-sized guild acknowledged as the strongest guild in Aincrad. Being one of the few girls that play SAO and extremely attractive, she receives many invitations and proposals. Asuna is a strong-willed, and an accomplished player known in-game as "the Flash" for her extraordinary fast skills with the rapier. Later, she falls in love with Kirito and they marry in-game after saving him from being killed by Kuradeel. Towards the end of the SAO arc, she saves Kirito from a killing blow by Heathcliff at the cost of her life. However, her death was only in-game and she is shortly reunited with Kirito shortly after the death of Heathcliff.
Despite the completion of SAO, Asuna remains unconscious and is instead detained in another virtual reality called Alfheim Online. She is forced to play the role of «Titania the Queen of Fairies», with Nobuyuki Sugou, the man responsible for imprisoning her, playing as Oberon the Fairy King. This is done so that Sugou could marry Asuna in the real world, while she is unconscious and thus take over RCT Progress Inc. She attempts to escape the World Tree where she is imprisoned and manages to steal a GM card, and is caught, and sent back after two slime guards verify she is the captive. When Yui's voice is heard, she throws the GM card down to her. Upon being released, she creates two avatars for Alfheim, Asuna (the Undine Healer) and Erika (and the Sylph battle character), and went on to continue living together with Kirito. She enrolls at the SAO Survivor School with Kazuto Kirigaya in the real world after everything ended. In the real world, Asuna's parents want her to follow in their footsteps. However, after living in SAO and meeting Kirito, she gains a different perspective and looks back on her past with disgust. She officially becomes Kazuto's real-life girlfriend and dreams of marrying him and having a family with him in the future.
Leafa
Leafa(リーファ,Leafa) / Suguha Kirigaya(桐ヶ谷 直葉,Kirigaya Suguha)

Voiced by: Ayana Taketatsu(Japanese); Cassandra Morris (English)
Suguha, also known as Sugu, is Kirito's "sister" in the real world; she is in actuality his cousin, as her mother had been raising her sister's child from a young age after her parents died from an accident, though neither Suguha nor Kirito knew about this until later.[1] She is a diligent worker and has been practicing kendo for 8 years, partially to escape the loneliness and isolation in her life.[2] After Kazuto Kirigaya (the name of Kirito in real life) gets trapped in Sword Art Online, she begins playing Alfheim Online as a Sylph in an attempt to try to understand him better, and it is at this time that she finds out they are cousins rather than siblings;[2] with her mother revealing to her that he is not her biological brother, but is actually her cousin and was adopted into their family when he was young. This causes Sugu to develop feelings for him that she doesn't really understand;[1] however, because he is trapped inside SAO, she never acts on them. That being said, when Kazuto awakens after his two-year ordeal, those feelings come back, but she realizes that he is already in love with someone else, namely Asuna.[2]
Coincidentally, she meets Kazuto's avatar, Kirito, in Alfheim Online after he saves her from an attack by player killers. Unaware of his true identity, she decides to help him on his quest to find somebody which eventually leads them to the world tree. After understanding the depth of Kazuto's love for Asuna, she resolves to give up on him and instead becomes attached to Kirito in ALO. However, when Kirito's true identity is revealed, she is heartbroken and the two of them have an awkward exchange in the real world where Sugu reveals her feelings for him. Not knowing how to respond or comfort her, Kazuto tells her he will be waiting for her in game. When they meet up they engage in a fight which culminates with both of them letting down their guard expecting the other one to kill them, however that only leads to them hugging and apologizing to each other. Leafa lets go of her feelings for Kirito and after pulling herself together she helps him rescue Asuna from the top of the world tree.[3] She regularly plays ALO together with Kirito, Asuna, Silica, Klein and the rest of their group. Leafa, Lisbeth and Silica also feature as protagonists in the spin-off manga series Sword Art Online: Girls' Ops, where they form a team with Kirito away on a study program and Asuna tied up in family affairs.[4]
Sinon
Sinon(シノン,Shinon) / Shino Asada(朝田 詩乃,Asada Shino)

Voiced by: Miyuki Sawashiro(Japanese); Michelle Ruff (English)
Is the main character of the Phantom Bullet Arc. When she was two years old, her father died in a car accident.[5] Nine years later, while at a post office, an armed robber attempted to shoot a pregnant woman, but lost control of the gun after Shino bit his hand. Afterwards, she shot him three times, killing him.[6] Since, she developed a fear of guns, entering panic attacks whenever one is visible. As a result, she is bullied at school by her peers, with a finger gun being enough to trigger her phobia.[7] To help ease her trauma, her friend Kyōji Shinkawa convinced her to play Gun Gale Online.[8] Known as Sinon in-game, her main weapon is the «PGM Ultima Ratio Hecate II» sniper rifle, which she earned after defeating a monster in a dungeon.[9]
Shortly before the Bullet of Bullets (BoB) tournament, Sinon encounters Kirito, deciding to help him after believing he is female due to his avatar.[10] After Kirito's true gender was revealed, an angered Sinon[11] attempts to leave him, but they meet again during the BoB.[12] The two are confronted by Death Gun, who causes Sinon's PTSD to relapse when his weapon was revealed to be a Type 54 pistol, the same weapon she had used in the post office shooting.[13] She is rescued by Kirito and the two escape, though she is afraid to attack Death Gun.[14] With his help, Sinon overcomes her fear and the two defeat Death Gun.[15] Afterwards, the two end the tournament as co-winners after Sinon kills them both with a «Gift Grenade».[16] Upon exiting GGO, Shino is visited by Kyōji, who congratulates her on winning the BoB. However, angry at Kirito, he attacks her with intentions of raping and eventually killing her, revealing himself to be Death Gun's creator.[17] Shino manages to resist his attack and escape, but is stopped by Kyōji before she could exit the house; Kirito arrives and fights Kyōji, the latter eventually being knocked out by Shino throwing her stereo at him.[18]
After the Death Gun incident, Sinon seems to have gotten over her fear and is moving on from the incident, no longer vulnerable to her classmates' threats of using a gun on her. In Agil's café, Shino meets Asuna, Rika, and Sachie Osawa, a woman who had survived the post office incident, who convinces her that she had saved her and her daughter's life.[19] Sinon eventually decides to play ALfheim Online with Kirito and his friends. During her time with Kirito, Sinon develops romantic feelings for him, but decides not to pursue them due to her close friendship with his girlfriend, Asuna. However, she does on occasion, show Kirito her true feelings for him.
Secondary characters
Yui
Yui(ユイ,Yui)
Voiced by: Kanae Itō(Japanese); Stephanie Sheh[20] (English)
Originally a side-story character in SAO, Yui later becomes an accompanying/support character in ALO. At first thought to be a lost child in SAO, she is an artificial intelligence. Her full designation is «Mental Health – Counselling Program», MHCP version 1, codename, «Yui». Yui is shown to have a human form and a Navigation Pixie form where she is always barefoot in both forms. She was designed to monitor the emotions of players and appear at their sides to hear and help them out. However, since the moment everyone was imprisoned in Sword Art Online, she was forbidden to come in contact with the players and complete her prime directive. Unable to do anything but suffer as she monitored the emotions of the trapped players, she came upon Kirito and Asuna whose emotions stood out as a beacon of joy and peace in a sea of fear and despair. She sought them out, appearing to them as an amnesiac child whom they adopted. In the end she was nearly deleted by Cardinal, the management system of SAO, but is saved by Kirito by converting and storing her data into his own NerveGear. Yui later shows up in ALO as a Private Navigation Pixie and helps Kirito along with Leafa to find Asuna. She refers to Kirito as "Daddy" and Asuna as "Mommy" and gets very annoyed if any girl other than Sinon, Leafa or Asuna gets close to Kirito. Kirito uses his skills and resources in the real world to construct a device for Yui to view the real world even while she is in virtual reality and gives her the ability to communicate with them.
Klein
Klein(クライン,Kurain) / Ryōtarō Tsuboi(壷井 遼太郎,Tsuboi Ryōtarō)
Voiced by: Hiroaki Hirata (Japanese), Kirk Thornton (English)
A friendly player that meets Kirito at the start of the game, who quickly befriends and learns the basics from Kirito where he became one of the 10,000 players who were trapped in Sword Art Online. Kirito and Klein go their separate ways shortly after when Kirito leaves for another town to power level, while Klein remains behind to help out his less experienced friends, although he is concerned for Kirito due to his solitude and recklessness. Klein uses a katana to fight and later becomes a leader of his own guild, Fuurinkazan. He regularly meets with Kirito and his friends and occasionally joins them in quests in ALO, especially after the release of the World Seed.[21]
In an interview with Sword Art Online author Reki Kawahara, he noted that Agil and Klein are both "very popular", and he wanted to write short stories centred around their characters.[22]
Agil
Agil(エギル,Egiru) / Andrew Gilbert Mills(アンドリュー・ギルバート・ミルズ,Andoryū Girubāto Miruzu)
Voiced by: Hiroki Yasumoto(Japanese); Patrick Seitz (English)
A bald, black axe wielder who owns a general shop in SAO, along with having a hand in Blacksmithing. Despite his intimidating appearance, he is kind-hearted and spent most of his earnings to help players in the middle floors. Kirito is a regular in his shop and they are friends. Agil runs a bar named "Dicey Café" in the real world, which was run by his wife during his two-year coma. The café later becomes Kazuto and company's meeting place in the real world.
In an interview with Sword Art Online author Reki Kawahara, he noted that Agil and Klein are both "very popular", and he wanted to write short stories centred around their characters.[22]
Silica
Silica(シリカ,Shirika) / Keiko Ayano(綾野 珪子,Ayano Keiko)
Voiced by: Rina Hidaka(Japanese); Christine Marie Cabanos (English)
A side-story character in SAO. One of the rare beast tamers in the game. Very early in the game, she was able to tame a small dragon, Pina (ピナ), who is named after her real-life cat: this feat gave her immense fame, but she was just a mid-level player. Due to her fame, many tried to get on her good side, causing her to get a bit of an inflated head. She usually stays away from the males, who try to marry her (despite the fact that she's only 13) or make her their "mascot." After getting lost in a forest, Pina is killed trying to save Silica from a monster attack. Kirito rescued and helped Silica get the "Pneuma Flower", an item that can revive tamed beasts, as she resembled his sister. She gained feelings for him, but once she discovers his skills, she realized that they cannot be together in the game but promise to meet again. Keiko befriends Rika at SAO Survivor School. She joins Kirito and his friends in ALO right after they meet in the real world: they often go together in quests.
Sword Art Online girls (including Silica) feature in a merchandise lottery by Bandai, where they are depicted in french maid clothing with cooking utensils, with Anime News Network humorously noting that they have "brought in a pretty penny for the franchise's creators."[23] In an interview with Haruka Tomatsu, Asuna's voice actor, she nominated Silica as her favourite character as she is "the kind of character I would want to have as a little sister."[24]
Silica was awarded 18th in a Dengeki Bunko character poll for their light novels.[25]
Lisbeth
Lisbeth(リズベット,Rizubetto) / Rika Shinozaki(篠崎 里香,Shinozaki Rika)
Voiced by: Ayahi Takagaki(Japanese); Sarah Anne Williams (English)
A side-story character in SAO, who is a blacksmith with her own shop and takes great pride in her abilities. Lisbeth or "Liz" is a close friend of Asuna who recommended her to Kirito. Kirito commissioned Liz to forge a custom-made sword for him and accompanies her in a quest for the special ore required for the job. During the quest, she also develops feelings for Kirito. She is devastated when she finds out that Kirito is Asuna's crush. However, she finds some solace after Kirito thanks her for giving him a renewed determination to fight on and clear the game. She requests to be Kirito's exclusive blacksmith. Rika is almost very well teasing Asuna about her relationship with Kirito afterwards. At SAO Survivor School, she and Keiko get irritated when seeing Kazuto and Asuna together. Liz later becomes a regular player in ALO and frequently joins Kirito and his friends in quests and takes up the task of upgrading their equipment.
Sword Art Online girls (including Lisbeth) feature in a merchandise lottery by Bandai, where they are depicted in french maid clothing with cooking utensils, with Anime News Network humorously noting that they have "brought in a pretty penny for the franchise's creators."[23] Yoshitsugu Matsuoka, the Japanese voice talent for Kirito, mentioned Lisbeth as his favourite character, since "Liz is really straight-forward and focused inside of the world of Sword Art Online, but then there was that scene when she learned that her best friend Asuna was in love with Kirito... Maybe it was [Ayahi] Takagaki's acting, but when I heard that her lines during that scene, I was like, wow."[26]
Yuuki
Yuuki(ユウキ,Yūki) / Yuuki Konno(紺野 木綿季,Konno Yūki)
Voiced by: Aoi Yūki(Japanese); Erica Mendez (English)
One of the main characters from Volume 7. She was an Imp in ALO, she started dueling anyone promising an 11-hit Original Sword Skill (OSS) if she's defeated: due to her undefeated status she's given the title "Absolute Sword". Eventually Asuna fights her but loses. After the fight Yuuki asks her to help defeating the 27th Floor boss with her guild the "Sleeping Knights" in desire to etch all their names on the Monument of Swordsmen to make a memory. After certain events, which include the defeat of the boss it is revealed that Yuuki has HIV/AIDS and the guild members are patients in terminal state: to test the Medicuboid device, designed supposedly by Rinko Koujiro, in care for future patients. Yuuki forms a strong bond with Asuna, in reminder of her late elder twin sister Aiko Konno. With the time passing Yuuki's condition deteriorates and after she entrusts her OSS «Mother's Rosario» to Asuna before she dies peacefully in ALO, surrounded by over 1000 players from every tribe in the game, including her guild members, Asuna and her friends.
Sword Art Online girls (including Yuuki) feature in a merchandise lottery by Bandai, where they are depicted in french maid clothing with cooking utensils, with Anime News Network humorously noting that they have "brought in a pretty penny for the franchise's creators."[23] She also features in promotional advertisements for a series of Umaibo puffed corn snacks by Namco.[27] Richard Eisenbeis of Kotaku complimented Yuuki as a "powerfully human" character, writing "Like with the classic Beowulf, Yuuki finds her meaning and immortality in the written word. For her, having her name (and those of her soon-to-pass-away friends) on a virtual wall for all eternity is proof that she existed. To her, even that is enough."[28]
Yuuki was awarded fifth in a Dengeki Bunko character poll for their light novels.[25]
Antagonists
Heathcliff
Heathcliff(ヒースクリフ,Hīsukurifu) / Akihiko Kayaba(茅場 晶彦,Kayaba Akihiko)
Voiced by: Tōru Ōkawa (Heathcliff), Kōichi Yamadera (Akihiko)(Japanese); Kevin M. Connolly (Heathcliff), Marc Diraison (Akihiko) (English)
Akihiko Kayaba is the director and creator of the NerveGear and Sword Art Online, as well as the main antagonist of the SAO arc. He traps all the players within SAO by using the NerveGear to obstruct signals from the user's brain. Any in-game death or attempt at removal of the NerveGear would result in the real-life death of the user. Later, it is discovered that he has been posing as Heathcliff, the leader of the Knights of the Blood Oath. Although he has the admin authority to make his avatar immortal, he is shown to be a powerful player even without his in-game immortality due to his intimate understanding of the SAO game mechanics which he himself had designed. His only goal in life was to make Aincrad a reality.
When his identity is exposed by Kirito, he challenges Kirito to a one-on-one duel where all of the remaining players will be logged out if Kirito is victorious. Following his defeat, he commits suicide by running a high output scan on his brain, but downloads his own consciousness into the server and leaves behind a program that gives Kirito the World Seed, which revitalizes the VRMMORPG industry.[29]
Richard Eisenbeis of Kotaku compared Heathcliff poorly to the series' second villain, Oberon, writing "How do you make a better villain than a man who trapped 10,000 people in a death game for no adequately explained reason? Easy. You just show how good that guy was by comparison to the new villain."[30]
PoH
PoH  / Vassago Casals(ヴァサゴ カザルス,Vasago Kazarusu)
Voiced by: Tsuyoshi Koyama
PoH is the leader of the SAO "Red player" guild, Laughing Coffin. He created the guild for the sole purpose of killing other players. His catch phrase is "It's showtime". His fate after SAO is unknown, but it is assumed he is still alive (with at least ten more LC members), since he was not listed as one of the deceased players. PoH stands for Prince of Hell and he worked for a terrorist/mercenary group during this arc. He is an illegitimate child of a Korean after a rape incident. The two migrated to Japan, and a certain CEO fell in love with his mother and took them in. This led to his hatred against people.
Kuradeel
Kuradeel(クラディール,Kuradīru)
Voiced by: Kōji Yusa(Japanese); Doug Erholtz (English)
A Two-Handed Sword user. Publicly a member of "Knights of the Blood Oath" and secretly a member of the red guild "Laughing Coffin". He was officially assigned as Asuna's bodyguard and despite his grudge develops an obsession with Asuna and begins secretly following her everywhere. When he sees that Kirito and Asuna are developing a relationship, he challenges Kirito to a duel over who can protect her. Kirito wins and Kuradeel is forced to leave. He later tries to murder Kirito and then Asuna, but is instead killed by Kirito at the last second.
Oberon
Oberon the Fairy King(妖精王オベイロン,Yōsei-ō Obeiron) / Nobuyuki Sugō(須郷 伸之,Sugō Nobuyuki)
Voiced by: Takehito Koyasu(Japanese); Todd Haberkorn (English)
Nobuyuki Sugō is the main antagonist of the Alfheim Online arc. He is the one responsible for keeping 300 NerveGear victims, including Asuna, prisoner even after SAO had ended. He did this by transferring them all into ALO for experiments on human subjugation via fulldive technology. He also attempts to take over RECT Progress Inc. by marrying Asuna while she is unconscious. He displays a perverse interest in consummating this marriage while Asuna is still comatose. In ALO, he takes on the identity of Oberon the Fairy King and makes Asuna his queen, Titania. When he and Kirito finally meet, he flaunts his GM status as well as the results of his research by critically damaging Kirito by increasing Kirito's pain limit and impaling him. However unlike Kayaba, he is a poor fighter and he is defeated by Kirito when the consciousness of Akihiko Kayaba reminded Kirito how he was defeated by Kirito's determination, before aiding him in overcoming Nobuyuki's GM status by using his Kayaba ID Heathcliff and removing Oberon GM Status. Kirito then blinds and dismembers him after setting Sugō's pain limit to the maximum. All 300 victims are released from ALO, but Nobuyuki makes another attempt to attack Kazuto while he is making his way to Asuna in the real world, now blind in one eye and insane after his defeat. However, he is once again subdued by Kazuto, who puts the unarmed combat skills he had learned in SAO to useful effect. Nobuyuki is then arrested and charged for his crimes.
The character was lauded as an "excellent villain" by Kotaku's Richard Eisenbeis, describing him as "cowardly, fancies himself a god, and is torturing people just to make money. More than that, he is also constantly threatening to rape Asuna—both in the game and in the real world. Simply put, he has the greatest hallmark of a good villain: He is a guy you love to hate."[30] Responding to criticism of Oberon being a "over-the-top" villain that is "comically evil", Karen Mead of Japanator.com found to be partially true, writing "would the show be better overall if Sugou was a more subtle villain who didn't take every opportunity to be an absolute douche? Maybe, but keep in mind, as a show about online interactions, demonstrating The Greater Internet Dickwad Theory is definitely in SAO's purview. He may not be a great character who's going to make anyone's "Top Villains We Hate to Love and Love to Hate" list, but he's a villain that makes perfect sense within the context of SAO's world."[31]
Theron Martin of Anime News Network found Sugō's character to a "over the top villain" and "the second arc's biggest stumbling block".[1] However, Rebecca Silverman (also of Anime News Network) disagreed, writing "Sugou actually feels the least over-the-top as he plots how to use the VR technology for his own ends [when compared to the other characters]", and praised him as "nicely evil".[32]
Death Gun
Sterben(ステルベン,Suteruben) / Death Gun(死銃,Desu Gan)
Death Gun is the main antagonist of the GGO arc, a player killer whose victims somehow die in the real world after being shot by his signature gun, a Type 54 "Black Star" he named  «Death Gun». In reality, Death Gun's actual user name is Sterben and is an alternate account created by Kyōji Shinkawa in the image of his brother's SAO avatar. He and his brother, a former member of the red SAO guild Laughing Coffin, used the Death Gun account to commit murder: Kyōji normally posing as Sterben and using a «Metamaterial Optical Camouflage Mantle» to spy on other players inputting their real life details so his brother can make his way to the house of a potential victim to inject the person with succinylcholine, a drug capable of stopping the heart, at the exact moment the victim's player is shot. During the Bullet of Bullets Tournament, the brothers switched roles while enlisting another Laughing Coffin member to assist them due to the multiple victims they selected.
Red-Eyed XaXa(赤眼のザザ,Akame no Zaza) / Shōichi Shinkawa(新川 昌一,Shinkawa Shōichi)
Voiced by: Ryōta Ōsaka (ALO), Sōichirō Hoshi (GGO)(Japanese); Ben Diskin (English)
One of Laughing Coffin's elite members, Red-Eyed XaXa is a sadist who believed in PoH's principles as he became the red guild's second-in-command. In real life, Shoichi's father did not have any expectations for him due to him being frail and sick. After SAO ended, having met Kirito during the Inner-Area incident to neutralize Laughing Coffin, Shoichi aided in Kyōji's Death Gun scheme before he eventually starts playing GGO under the Sterben account. Shoichi entered the Bullet of Bullets tournament to prove his "true" killing ability to the rest of the world, only to be defeated by Kirito before he and his brother are arrested after the GGO arc.
Spiegel(シュピーゲル,Shupīgeru) / Kyōji Shinkawa(新川 恭二,Shinkawa Kyōji)
Voiced by: Natsuki Hanae(Japanese); Johnny Yong Bosch (English)
Shino's friend both in the real world and GGO, in fact he was the one who introduced Shino to GGO in the first place as a form of immersion therapy for her fear of guns. Having been forced to bare the pressure of taking over his family's hospital while bullied at school, Kyōji was more fascinated with Shoichi's murderous exploits in SAO while becoming disillusioned with the real world. Kyōji finally snaps after a famous GGO player tricked him and multiple other newer players into creating weak, agility focused avatars knowing that there was going to be a patch that would give his strength focused character an edge in the upcoming Bullet of Bullets tournament. This resulted with Kyōji creating the Sterben account in XaXa's image and committing murders as Death Gun with the help of XaXa and Johnny Black. Kyōji is also revealed to be romantically obsessed with Shino, having Shoichi be Death Gun during the BoB so he can personally kill her in a murder-suicide and be "reborn" with her in a new world where their modern worries won't exist. But Kirito manages to save Shino and Kyōji is placed in police custody.
Johnny Black(ジョニー・ブラック,Jonī Burakku) / Atsushi Kanemoto(金本 敦,Kanamoto Atsushi)
Voiced by: Ryōta Ōsaka
One of Laughing Coffin's elite members, Johnny Black is a cold-blooded killer who likes to play with his victims as he once suggested to XaXa and PoH to have a fight-to-the-death with their captives Schmitt, Caynz, and Yolko for fun. Sometime after SAO, Atsushi helped Shoichi and his brother in their Death Gun scheme and was the only member of their gang to escape arrest. Six months later, Atsushi returns and attempts to kill Kazuto and Asuna in the real world but failed and was subdue and arrested by the police. Atsushi came close to killing Kazuto with a succinylcholine syringe, but is himself severely wounded, being stabbed through his thigh with an umbrella by the latter.
Thrym
Thrym(スリュム,Suryumu)
Voiced by: Iizuka Shōzō(Japanese); John Snyder (English)
The King of the Frost Giants and final boss of the Calibur sidestory, Thrym is an artificial intelligence that ALO's Cardinal System created from the actual Norse myth. But in a departure from usual NPCs, Thrym is one of few whose core programming is connected to ALO's language engine to be a more realistic character. In the game storyline, Thyrm emerged from Aflheim and used the stolen Excalibur to conquer the Hill Giants' realm of Jötunheim. With Jötunheim turned to a frozen wasteland after losing the World Tree's blessing, Thrym created his fortress Thrymheim from the frozen spring of the Hill Giant leader Urðr, after its waters were lodged in the tree's receding roots. Thrym then uses his forces, and players he recruits on a false quest, to slaughter the native beasts to cripple the power of Urðr and her sisters so he can reach the surface of Alfheim and obtain the golden apple growing on top of the World Tree. But as Kirito and his party realize upon taking Urðr's quest to stop him, Thrym's actions would cause a chain of events that would result in the Ragnarok scenario and ultimately reset ALO. The group find Thrym and manage to defeat him with the help of a NPC named Freyja, who was revealed to be Thor in disguise.
Quinella
Quinella(クィネラ,Kwinera)
Voiced by: Maaya Sakamoto
The true ruler of Underworld, the highest minister of the Axiom Church and the main antagonist of the Underworld arc. 350 years before Kirito would enter the Underworld, Quinella was born. She was given the sacred task of studying the Sacred Arts. Soon, she learned that by killing others, one's stats could be raised, so every night she snuck out and killed the animals of the forest, which would respawn everyday anyway. She raised her stats to a ridiculously high level and decided to take control over the Underworld. Fooling people into believing she was a goddess, she created the Axiom Church and made laws to control the people. She studied the Sacred Arts intensely, trying to find a way to transcend the limit of that world, the «Life» of that world. She finds the System Control Authority command on the brink of death and immediately uses it to heal herself, restoring her beauty and «Life» to her former appearance as a youth.
Supporting characters
SAO players
Sachi
Sachi(サチ,Sachi)
Voiced by: Saori Hayami(Japanese); Xanthe Huynh (English)
A side story character in SAO. She was a member of "Moonlit Black Cats" which was the first guild Kirito joined. Kirito was especially attached to her. Sachi, along with the other members were in a computer club at their school. However she died along with the majority of her guild members which led to Kirito wallowing in despair and self-loathing until he read the time delayed message she left for Kirito on Christmas Eve. Even after the message gave him the strength to live, he never joined another guild until he is forced to join the Knights of the Blood Oath.
Argo
Argo(アルゴ,Arugo)
Voiced by: Shiori Izawa(Japanese); Cassandra Morris (English)
Argo is a friend and fellow beta tester of Kirito in SAO. Known as "Argo the Rat" she works as a knowledge broker and messenger. Her motto is "All information comes with a price", so she regards everything as information, even the persons who gave her the information are regarded as information.
Sasha
Sasha(サーシャ,Sāsha)
Voiced by: Kyouko Fujii(Japanese); Erika Harlacher (English)
Sasha is a caretaker of the younger SAO players in Town of Beginnings on the 1st Floor.
Yolko
Yolko(ヨルコ,Yoruko)
Voiced by: Nozomi Yamamoto(Japanese); Natalie Hoover (English)
Yolko is a member of the Golden Apple guild. Her boyfriend is Caynz.
Yulier
Yulier(ユリエール,Yuriēru)
Voiced by: Ryoko Shiraishi(Japanese); Amanda C. Miller (English)
Yulier is second-in-command of the Liberation Force Army. She is devoted to aiding Thinker with his duties as leader. Thinker married her in real life.
ALO players
Sakuya
Sakuya(サクヤ,Sakuya)
Voiced by: Sayuri Yahagi(Japanese); Lauren Landa (English)
She is the leader of the Sylph. During a meeting with the Cait Sith, she is attacked by Salamanders led by General Eugene. At the same moment, Kirito flies in to challenge the general to a duel. After Kirito wins the battle, she attempts to seduce him to join the Slyphs, but Leafa smothers their attempt, saying that she is accompanying him to the World Tree. At the end of the arc, Lady Sakuya leads a combined force of Cait Sith and Sylph against the World Tree's Guardians in an attempt to aid Kirito with the battle. After Kirito reached the top of the World Tree, she ordered her forces to pull back. Sakuya is later seen with Alicia and Sylph warriors and a few Cait Sith flying towards New Aincrad.
Alicia Rue
Alicia Rue(アリシャ・ルー,Arisha Rū)
Voiced by: Chiwa Saito(Japanese); Cristina Vee (English)
She is the leader of the Cait Sith. She was elected for the position of leader by popular vote. She is capable of using the high-level magic «Moonlight Mirror». She forms an alliance with the Sylphs to finish the «Conquer the World Tree Quest».
During the Cait Sith meeting with the Sylph at the Butterfly Valley, the groups were attacked by Salamanders led by General Eugene. Kirito dived in to save the day and fought off Eugene, even though Kirito had inferior equipment. After the Salamanders left the area and Kirito revealed that he was not working for anyone, Alicia tried to seduce Kirito into coming to the Cait Sith territory and working for them, but he declined her offer by saying that he had to go to the World Tree. The next day, along with Sylph reinforcements, she and her squadron of Cait Sith riders, on tamed dragons, aided Kirito's ascension of the World Tree after using the collected funds to purchase armor of at least Ancient grade for all of her warriors. After Kirito managed to get through to the top of the tree, she withdrew her forces from the area. Alicia is later seen with Sakuya and a few Cait Sith and Sylph warriors flying towards New Aincrad.
Recon
Recon(レコン,Rekon) / Shin'ichi Nagata(長田 慎一,Nagata Shin'ichi)
Voiced by: Ayumu Murase(Japanese); Marianne Miller (English)
Suguha's classmate in the real world. He introduced ALO to Suguha who asked him about VRMMO. In ALO, he is a Sylph dagger wielder and dark mage. He also displays an obvious romantic interest in Suguha, although the feelings are not mutual.
Eugene
Eugene(ユージン,Yūjin)
Voiced by: Kenta Miyake(Japanese); Joshua Tomar (English)
General Eugene intended to disrupt the Cait Sith and Sylph alliance conference. Earlier, Recon manages to learn of the attack and warns Leafa. She and Kirito rush to stop the confrontation, but Eugene challenges the Spriggan to a one-on-one duel. At first, Kirito was forced to defend himself against the onslaught of the Earth-style weapon of Eugene, but Kirito takes Leafa's katana to prepare for his notable «Dual Blades». With this extra blade, Eugene could not breach Kirito's defenses and was quickly defeated. After the duel, he was revived by Sakuya and leaves the scene with his forces on good terms. Before the duel, Eugene was considered the strongest player in the game.
Chrysheight
Chrysheight(クリスハイト,Kurisuhaito) / Seijirō Kikuoka(菊岡征二郎,Kikuoka Seijirō)
Voiced by: Toshiyuki Morikawa(Japanese); Matthew Mercer (English)
Kikuoka Seijirō is a member of the Ministry of Internal Affairs. After the SAO incident, he interviewed Kazuto for information regarding the events that transpired during the game, in exchange for information on Asuna's whereabouts. After the events of the Fairy Dance arc he has another meeting with Kazuto, to recap the events of SAO again, as well as the events of ALO. He began playing ALO under the name Chrysheight and later contacts Kirito to investigate the Death Gun deaths in GGO.
After Kazuto is attacked in the real world by Johnny Black, Kikouka abducts Kazuto from the hospital and transports him to the Ocean Turtle in order to give him medical treatment for the brain damage he received. It's revealed that Kikouka also is head of RATH, a company under the Ministry of Defense, that is trying to develop AI suitable for replacing humans on a battle-field.
Underworld residents
Alice Zuberg
Alice Zuberg(アリス・ツーベルク,Arisu Tsūberuku)
Voiced by: Ai Kayano (Japanese)[33]
The mysterious girl who was Kirito's "childhood friend", along with Eugeo, in UnderWorld. She is captured and supposedly taken away to be executed by the Integrity Knights for breaking the rule by "entering" the Dark Territory. She contacted Kirito, in spirit form, as well as aided in Eugeo's healing, showing that she is still alive and remembered both of them. She also implored them to come find her. It is later revealed, first in a short story, that she had become an Integrity Knight and is confirmed in Volume 11 of the light novels. Her name as an Integrity Knight is Alice Synthesis Thirty(アリス・シンセシス・サーティ,Arisu Shinseshisu Sāti).
Alice was awarded fourth in a Dengeki Bunko character poll for their light novels.[25]
Eugeo
Eugeo(ユージオ,Yūjio)
Voiced by: Nobunaga Shimazaki (Japanese)[33]
A young lad who was also Kirito's "childhood friend" along with Alice in UnderWorld. He has his memories of Kirito purged, along with the rest of the villagers, but recovers them later on, to a certain degree. He has a strong desire to find Alice and in order to do so, Kirito teaches him his "Aincrad-style" sword skills.
Eugeo was awarded sixth in a Dengeki Bunko character poll for their light novels.[25]
Selka Zuberg
Selka Zuberg(セルカ・ツーベルク,Seruka Tsūberuku)
Voiced by: Kaori Maeda
Younger sister of Alice and an apprentice of Sister Azariya. She is capable of wielding the Sacred Arts but dislikes being compared to her sister. She does not remember Kirito, but is put in charge of him upon his "return".
Cardinal
Cardinal(カーディナル,Kādinaru)
Voiced by: Sakura Tange
The Cardinal System, the one with complete control and authority in SAO, it controls everything. In ALO, the only other VRMMORPG to have it, it has partial control. During the Alicization Arc, in the Underworld, it takes the form of a scrawny 10-year-old girl, who lives in the Great Library Room. Cardinal does not have any control of the Underworld and only has powers in the Library because Quinella used the System Control Authority to revoke Cardinal's rights.
Ronye Arabel
Ronye Arabel(ロニエ・アラベル,Ronie Araberu)
Voiced by: Reina Kondō (Japanese)
Kirito's valet in the Sword Mastery Academy. She ranked in the top 12 of her year, thus qualifying her to be a valet of an elite swordsman. Since she was of the lowest Noble Class, along with Tiese, she was not chosen by any of the elite swordsmen except for Kirito who opted to take the last remaining valet.
Tiese Schtrinen
Tiese Schtrinen(ティーゼ・シュトリーネン,Tīze Shutorīnen)
Voiced by: Kaori Ishihara
Eugeo's valet in the Sword Mastery Academy. She ranked in the top 12 of her year, thus qualifying her to be a valet of an elite swordsman. Since she was of the lowest Noble Class, along with Ronye, she was not chosen by any of the elite swordsmen except for Eugeo who opted to take the last remaining valet. She entered the Academy in order to raise her family's social status.
Other UW residences
The following is a list of all other known Integrity Knights:
Bercouli(ベルクーリ,Berukūri) / Bercouli Synthesis One(ベルクーリ・シンセシス・ワン,Berukūri Shinseshisu Wan)
Fanatio(ファナティオ,Fanatio) / Fanatio Synthesis Two(ファナティオ・シンセシス・ツー,Fanatio Shinseshisu Tsū)
Deusolbert(デュソルバート,Dyusorubāto) / Deusolbert Synthesis Seven(デュソルバート・シンセシス・セブン,Dyusorubāto Shinseshisu Sebun)
Linel(リネル,Rineru) / Linel Synthesis Twenty-Eight(リネル・シンセシス・トゥエニエイト,Rineru Shinseshisu Tuenieito)
Fizel(フィゼル,Fizeru) / Fizel Synthesis Twenty-Nine(フィゼル・シンセシス・トゥエニナイン,Fizeru Shinseshisu Tueninain)
Eldrie Woolsburg(エルドリエ・ウールスブルーグ,Erudorie Ūrusuburūgu) / Eldrie Synthesis Thirty-one(エルドリエ・シンセシス・サーティワン,Erudorie Shinseshisu Sātiwan)
Progressive Series
Kizmel
Kizumeru(キズメル,Kizmel)
Voiced by: Shizuka Itou
She is a Dark Elven Royal Guard, a member of the Dark Elven Pagoda Knight, and an elite quest Non-Player Character (NPC) for the Elf War campaign, who partied with Kirito and Asuna throughout the campaign.
Ordinal Scale
Yuna
Yuna(ユナ) / Yuuna Shigmura(重村 悠那,Shigemura Yūna)
Voiced by: Sayaka Kanda(Japanese); Ryan Bartley (English)
She was the daughter of Professor Tetsuhiro Shigemura, the childhood friend of Eiji Nochizawa (Nautilus, Eiji), and was one of the 10,000 players who were trapped in Sword Art Online, where she became known as the Song Enchanter (歌エンチャンター) or Utachan (歌チャン or ウタちゃん, Uta chan?) due to singing in the Teleport Gate plazas of Aincrad's main towns, as well as having the Chant Extra Skill. She was killed in battle in a field dungeon on the 40th Floor of Aincrad by a group of tormentor-class minions of the Feral Warder Chief that she had drawn to herself to protect her party from being annihilated.
Eiji
Eiji(エイジ, (OS)) / Eiji Nochizawa(後沢 鋭二,Nochizawa Eiji) / Nautilus(ノーチラス,Nōchirasu, (SAO))
Voiced by: Yoshio Inoue(Japanese); Chris Patton (English)
He is one of the antagonists of Ordinal Scale and one of the main characters of the Ordinal Scale side stories, including Hopeful Chant and Cordial Chords. He was the childhood friend of Yuuna Shigemura, and was one of the 10,000 players who were trapped in Sword Art Online, where he suffered from a FullDive Non-Conformity condition that impeded his movement whenever he feared for his life. After Sword Art Online was cleared, Eiji continued his life in seclusion in his apartment, until Yuuna's father, Tetsuhiro Shigemura  recruited him to help with his plan to restore Yuuna as an Artificial Intelligence (AI)by reconstructing her personality from memories of her retrieved from Sword Art Online survivors through brains scans conducted with the Augma when their memories of Sword Art Online were stimulated via fighting SAO bosses in Ordinal Scale. He was betrayed by the professor and eventually surrendered to the police due to having injured the members of Fuurinkazan in real life in the process of gathering memories to revive Yuna.
Other characters
Midori Kirigaya
Midori Kirigaya(桐ヶ谷 翠,Kirigaya Midori)
Voiced by: Aya Endō(Japanese); Caitlin Glass (English)
Midori is Suguha's mother, as well as Kazuto's aunt and foster mother in the real world. She cares deeply for both her children. In Volume 10, she is assured by the authorities of Kazuto's safety. In reality, Kazuto's comatose body was kidnapped by Kikuoka Seijirou. When Asuna and Suguha tried to tell her their suspicions, she did not believe them.
Shōzō Yuuki
Shōzō Yuuki(結城 彰三,Yūki Shōzō)
Voiced by: Kazuhiro Yamaji(Japanese); Keith Silverstein (English)
Shōzō is Asuna's father and the former CEO of RECT Progress Inc, which goes bankrupt after the company is partly held responsible for Sugō's crimes.
Silver Crow
Silver Crow(シルバー・クロウ,Shirubā Kurō) / Haruyuki Arita(有田 春雪,Arita Haruyuki)
Voiced by: Yuki Kaji(Japanese); Erik Scott Kimerer (English)
Silver Crow is the main character of Accel World, another of Reki Kawahara's light novels who appears to confront Kirito in a crossover side story. As he is the sub combiner of Takumu, he forms into a two combined gestalt Gene-Linker Silver Crow.
Endou
Endou(遠藤,Endō)
Voiced by: Yoko Hikasa(Japanese); Olivia Charles (English)
Endou is a manipulative person who approached Shino and pretended to be her friend just to be able to use Shino's home for personal use and as a place to stay overnight after getting drunk. She uses Shino's phobia to make her scared of her. After the Death Gun incident, she is surprised to see Shino overcome her phobia.
Natsuki Aki
Natsuki Aki(安岐 ナツキ,Aki Natsuki)
Voiced by: Ayako Kawasumi(Japanese); Julie Ann Taylor (English)
Natsuki is the nurse who oversaw Kazuto during his rehabilitation after the SAO incident. She also watched over him during his investigation over Death Gun in GGO.
Kyouko Yuuki
Kyouko Yuuki(結城 京子,Yūki Kyōko) / Erika(エリカ)
Voiced by: Megumi Hayashibara(Japanese); Johanna Luis (English)
Kyouko is a professor who is Asuna's mother. She attempts to take Asuna under her wing to become a woman with a rich husband, denying her wishes to stay with Kazuto. Though she initially does not understand the fascination of the virtual world, Asuna has her mother visit ALO. There, Kyouko discovers that Asuna's home in ALO looks like her childhood home, a forest-house. The experience inspires Kyouko to tell her daughter to work hard to get the husband she wants.
Rinko Koujiro
Rinko Koujiro(神代凛子,Kōjiro Rinko)
Voiced by: Sanae Kobayashi
Rinko is a professor, co-worker and also a former love-interest of Akihiko Kayaba. In the SAO arc, she initially helped in the development of SAO and when the incident occurred, she was the only person who guessed where Akihiko was. Without telling anyone and avoiding the police, she decided to confront Akihiko in his hidden mountain cottage with the intent to kill him, but she was not able to do so and instead helped maintain Akihiko's physical condition, when he dived into the game for long periods of time. After the incident, the police found the cottage where both of them stayed. While Akihiko had already died after digitizing his brain to the network permanently, Rinko was arrested by the police and awaited her trial.
Apparently, she was released on bail from her trial. In the Alicization arc, she has been invited by Kikuoka Seijirou to do a top secret research on the «Soul Translator» technology, but has been reluctant to accept the offer. Until, one day, upon learning Asuna's situation, she agreed to help the girl find Kazuto, so she contacted Kikuoka about accepting the invitation. Rinko and Asuna, traveled to the hidden base of Rath, the «Ocean Turtle».
Video game characters
Hollow Fragment

Philia
Philia(フィリア,Firia) / Kotone Takemiya(琴音)
Voiced by: Yui Ishikawa
An "Orange player" and treasure hunter. Kirito met Philia immediately after being suddenly teleported to the Hollow Area region of Aincrad then fight a weakened version of the Skull Reaper. Philia's orange player status was actually a system glitch. She has grown a romantic interest in Kirito when saving her from the clutches of PoH.
Strea
Strea(ストレア,Sutorea)
Voiced by: Sachika Misawa
An unknown player who started tailing Kirito after the events of the 75th Floor's boss fight. Throughout the story, Strea would be seen in the Labyrinth searching for «something». Strea was later revealed to actually be a mental-health program, similar to Yui, who was somehow able to appear using an unused avatar that was still registered in Aincrad. However, the near-death experience had slowly altered her data and resulted in her fusion with the «Hollow Avatar». Yui absorbed Strea's program and assured the rest of the group that she was still alive.
Lost Song

Seven
Seven(セブン,Sebun) / Nanairo Arshavin(七色 アルシャービン,Nanairo Arushābin)
Voiced by: Hisako Kanemoto
Nanairo Arshavin, nicknamed Seven, is a Russian scientist who is playing ALO to research VR. She graduated from MIT at the age of 12 and is a pop idol,[34] performing concerts in-game[35] as a Pooka.[36] Considered "the light" to Akihiko Kayaba's "darkness", she is the leader of the guild Shamrock in the game.[37][38] Unlike her guild members, she is of a lower level, and lets them fight for her.[39]
Rain
Rain(レイン,Rein) / Nijika Karatachi(枳殻 虹架,Karatachi Nijika)
Voiced by: Miyu Takagi
A Leprechaun girl[36] who follows Kirito during the events of the game.[37] She is Seven's older sister, and works at a maid cafe when not playing ALO. Like Kirito, she is an SAO survivor and can dual wield. After the events of the game, she meets Kirito in real life, where she reveals the rift between her and Seven; after SAO was cleared, she talked with Kikuoka Seijirō about it, and decided to join ALO.[40]
Sumeragi
Sumeragi(スメラギ,Sumeragi) / Ryota Sumeragi(住良木 良太,Sumeragi Ryōta)
Voiced by: Ryota Takeuchi
An Undine[36] and Shamrock leader who is in charge of protecting Seven. A strong swordsman, he defeated General Eugene in combat prior to the events of the game.[38] Outside of ALO, he is Seven's research partner in America.[41]
During the story, Kirito and Sumeragi encounter each other at various times, and the two challenge each other to a duel, which is interrupted. At the final dungeon, Sumeragi and Kirito resume their duel, where the former reveals his Original Sword Skill, which is inspired by the Norse god of war Týr and has the power of a two-handed sword compressed into a one-handed sword.[42]
Sumeragi works as a quantum neurology researcher, and his affiliation with Seven prompted Kikouka to request him to perform surveillance on her while experimenting.[43]
Hollow Realization

Premiere
Puremia(プレミア)
Voiced by: Yuiko Tatsumi
She is a 14-year old Non-Player Character (NPC), born from the creation of Sword Art: Origin. She  was a quest giving NPC. Originally, Premiere had no pre-programmed settings to determine her behavior or interactions with players. However, after meeting Kirito's group, she began to develop an inquisitive and childlike nature, often learning and utilizing words and phrases she heard from other players.
Tia
Tia(ティア)
Voiced by: Yuiko Tatsumi
Premiere twin sister who is also an NPC, born from the creation of Sword Art: Origin. Like her sister, Tia was originally a null NPC, having no pre-programmed responses or behavior. However, after encountering and spending time around Genesis, she began adopting many traits of his attitude, including his belief in survival of the fittest and his disregard for other NPCs. She also developed an intense hatred for other people, due to their openly hostile attitude and contempt towards Genesis.
Genesis
Jeneshisu(ジェネシス)
Voiced by: Kazuyuki Okitsu
A wild frenzied look when he is fixated on combat with a berserker fighting style to match. He has no regard for Non-Player Characters (NPCs), considering them unworthy of his attention. He is known as the «Black Swordsman» (黒の剣士, Kuro no Kenshi?) by the players of Sword Art: Origin. It was later revealed that he is a famous hacker known as the «God of Cheats» (ゴッド オブ チート, Goddo Obu Chīto?, abbreviated as «GOC»).
Fatal Bullet
Protagonist (Fatal Bullet)
The Protagonist is the main character of Sword Art Online: Fatal Bullet. The Protagonist began playing Gun Gale Online (GGO) due to the request of their childhood friend Kureha.
Kureha
Kureha(クレハ,Kureha) / Momiji Takamine(高峰 紅葉,Takamine Momiji)
Voiced by: Ayane Sakura
GGO's protagonist’s childhood friend, who invites them to log in to Gun Gale Online. She is a veteran player, who has been playing since its early days. Kureha is bright and cheerful, with a meddlesome personality, and considers it her job to personally protect the protagonist. She plays Gun Gale Online to realise her own strength, and spares no effort to discover that strength.
Afasys / Rei
Voiced by: Natsumi Takamori (Female) Voiced by: Kazutomi Yamamoto (Male)
The ArFA-Sys is a rare Type-X AfFA-Sys that appeared as part of the new update to Gun Gale Online. The protagonist encounters it following the tutorial mission. Throughout the game, the others have nicknamed the AfFA-Sys, Rei. She is the key to the new SBC Flugel dungeon.
Zeliska
Voiced by: Mamiko Noto
Zeliska is a skilled yet mysterious player in GGO who also owns a Type-X AfFA-sys, affectionally named Daisy. In real life, she is an programmer for the Gun Gale Online Japanese servers. While she is highly regarded for her unmatched skill, she is not on any of the Ranking Leaderboards, thus earning her the nickname "The Uncrowned Queen."
Itsuki
Voiced by: Tatsuhisa Suzuki
Itsuki a is the leader of the most powerful Squadron in Gun Gale Online, Alphard. While he is seemingly a calm and carefree player, Itsuki is secretly on a constant search for something to excite him. This obsession leads to him becoming the main antagonist of Fatal Bullet.
Integral Factor
Protagonist (Integral Factor)
The Protagonist is the main character of Sword Art Online: Integral Factor. The protagonist is a former SAO beta tester. One of the players that were trapped in the game after it launched.
Koharu
Voiced by: Ari Ozawa
A former SAO beta tester, but she hasn’t played a serious VR game before SAO. She met and learned combat from the protagonist during beta testing, and they became friends. They swore to meet again after the official game was released.


Light novels

Kawahara, Reki (2009). Sword Art Online 1: Aincrad. ASCII Media Works
Kawahara, Reki (2009). Sword Art Online 2: Aincrad. ASCII Media Works
Kawahara, Reki (2009). Sword Art Online 3: Fairy Dance. ASCII Media Works
Kawahara, Reki (2010). Sword Art Online 4: Fairy Dance. ASCII Media Works
Kawahara, Reki (2010). Sword Art Online 5: Phantom Bullet. ASCII Media Works
Kawahara, Reki (2010). Sword Art Online 6: Phantom Bullet. ASCII Media Works
Kawahara, Reki (2011). Sword Art Online 7: Mother's Rosario. ASCII Media Works
Kawahara, Reki (2011). Sword Art Online 8: Early and Late. ASCII Media Works
Kawahara, Reki (2012). Sword Art Online 9: Alcization Beginning. ASCII Media Works
Kawahara, Reki (2012). Sword Art Online 10: Alcization Running. ASCII Media Works
Kawahara, Reki (2012). Sword Art Online 11: Alcization Turning. ASCII Media Works
Kawahara, Reki (2012). Sword Art Online: Progressive 1. ASCII Media Works


 at the Sword Art Online official Japanese website
 at the Sword Art Online official North American website
 at IMDb