Origin

Katos is a servant to the Celestials living on their supermassive Celestial Mothership. His responsibilities are largely unknown however one of his main tasks was to tutor and mentor a group of the Young Gods. Katos would specifically mentor Moonstalker, Caduceus, Calculus, Genii, Harvest, and Varua. Katos was not the only servant to the Celestials. A fur like cat woman Juniper also resided on the Celestial ship, and she would serve as a mentor and teacher to the Young Gods Bright Sword, Daydreamer, Highnote, Mindsinger, Sea Witch, and Splice. Katos would tend to teach the merits of self defense and defensive actions, where as Juniper would teach the merits of offensive combat. 
 

Creation

Katos is a Marvel comic book character created by Gerry Conway, Mark Bagley and Keith Williams. The character first appears in The Spectacular Spider-Man Annual #8 released in 1998. 
 

Powers and Abilities

A skilled mentor and teacher, who specialized in defensive combat and tactics. Extraterrestrial in nature, Katos also acted as a servant to the Celestials.