Chiriku
He was once part of the Twelve Guardian Ninja. When six of the members tried a coup d’etat he alongside Asuma Sarutobi, Kitane, Nauma, Tou’u, and Seito fought against them. He alongside Asuma and Kazuma was the only survivors of the fight.
When the group disbanded he became head monk at the Fire Temple, an elite monastery that is home to monks with special abilities. During his time with the Twelve Guardian Ninja, some underground organization put a 30 Million Ryo bounty on his head.