The Four Immortals

The Four Immortals are a team of rouge ninja composed of Mokushi, Yamaru, Hoda, and Karuko. Little is known of this mysterious organization, other than that they were serving as spies for the late Sasori; who was a mentor for Mokushi, Yamaru, and Hoda before his death.

After the death of their master, the three took it upon themselves to eliminate all remaining sleeper agents of Sasori, in order to keep their identities a secret. While under Sasori, the main task of the three were to spy on the main villages and other criminal organizations, as well as to watch over Sasori's large amount of sleeper cell spies.

During their mission to eliminate all of the remaining sleeper agents, the three encountered Karuko, the self proclaimed prophet of Jashin; who attempted to sacrifice the group using his Curse Technique: Death Controlling Possessed Blood that could posses up to twenty targets at once. Karuko was unsuccessful in this attempt; instead of killing him, the three promised more sacrifices and slaughter if he would join them. Karuko agreed and the four immortals were formed with the soul intention of world domination.