Lobo Wildman

Referred only as Wildman in the manga, in the anime his full name is revealed to be Lobo Wildman. A full-blooded werewolf warrior who respects and cares very much for Riza, his sister. He was forced to betray his old master, Hime, by Hime's brother who was holding Riza hostage, and died honorably in battle.

(Source: Wikipedia)