Age
26
Origin
Japan
Kuradeel was one of the 10,000 players who were trapped in «Sword Art Online». He was originally assigned by his guild, the «Knights of the Blood», to protect Asuna. He was later revealed to be a member of Laughing Coffin, the infamous Player Killing guild. Kuradeel first appeared to be a man who overstepped his bounds to protect the vice-commander of the KoB, Asuna, whether she liked it or not. He was also prideful and emotional, exemplified by him challenging Kirito to a duel when the swordsman claimed he could do a better job at protecting Asuna. Kuradeel was later revealed to be a sadistic killer, illustrated by his enjoyment in murdering Godfree and harming Kirito. A small hint of his dark personality was shown when Kuradeel was about to strike Kirito with a murderous intent during their duel.

Sword Art Online
In 2022, a virtual reality massively multiplayer online role-playing game (VRMMORPG) called Sword Art Online (SAO) is released. With the NerveGear, a helmet that stimulates the user's five senses via their brain, players can experience and control their in-game characters with their minds. Both the game and the NerveGear was created by Akihiko Kayaba. On November 6, 10,000 players log into the SAO's mainframe cyberspace for the first time, only to discover that they are unable to log out. Kayaba appears and tells the players that they must beat all 100 floors of Aincrad, a steel castle which is the setting of SAO, if they wish to be free. Those who suffer in-game deaths or forcibly remove the NerveGear out-of-game will suffer real-life deaths. The main character, Kirigaya "Kirito" Kazuto, was also one of 1,000 testers in the game's previous closed beta. With the advantage of previous VR gaming experience and a drive to protect other beta testers from discrimination, he isolates himself from the greater group and plays the game alone, bearing the mantle of "beater", a "beta tester" and "cheater". As the players progress through the game Kirito eventually befriends a young girl named Asuna Yuuki, who form a relationship that later turns into in-game marriage. After the duo discover that Akihiko Kayaba was playing the game as the leader of the guild Asuna joined, they confront and destroy him, freeing themselves and the other players from the game.