Alias: Trickster Priest
Position: Juujinkan (Juu-oh's Priest)
Age: 1012 +
Bloodtype: Mazoku do not have blood.
Height: 6'0" (Rumor)
Seiyuu: Akira Ishida, David Moo (English)
Xelloss first appears in episode two of Slayers NEXT. He appears to help Lina and Zelgadiss by telling them where they can find a copy of the Claire Bible... Later in the same episode, he double-crosses everyone by stealing the copy of the Claire Bible and destroying it before anyone else can read it.
Always replying to questions about himself with "Sore wa himitsu desu!" (That is a secret!), not much is actually known about Xelloss until the end of Slayers NEXT. Here he reveals himself to the Company and the viewers that he is, in fact, one of the mazoku. While Lina nor Gourry are surprised, this is a big revelation to everyone else. ...but at least it explains Xelloss' personality very well.
Since his first appearance, Xelloss has quickly become a fan favourite. Some simply adore his wickedness while others find him to be attractive (only L-sama knows why). Either way, many seem to forget that Xelloss is in fact a mazoku: a being evil to the core. He is two-faced: one side is goofy, lighthearted and mischievous while the other side is dark, cold hearted and evil.