Chiriku

(chi meaning "earth", and riku meaning "land") was one of the Twelve Guardian Ninja, who once was hired to protect the Fire Country's Daimyou.

Background
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 were 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.

Hidan and Kakuzu Arc
After entering the Fire Country, Hidan and Kakuzu get into the Fire Temple believing that such a religious place would perhaps house of the Fire Country's Jinchūriki. They completely wiped out the monks and the temple and Kakuzu took Chiriku's body to a black market exchange point to get the bounty for his body. During their fight, Chiriku used the powerful Amida's 1000-arm Death Embrace, but the attack would ultimately prove useless against Hidan's immortality.