Zetsu

About

Zetsu is the Akatsuki member who served as spy, communication relay, and cleanup operative—consuming bodies to erase evidence of missions—appearing as a half-black, half-white plant-like being who argues with himself between his two halves. The eventual revelation that Black Zetsu is a manifestation of Kaguya Otsutsuki's will that manipulated the entire shinobi world's history for a thousand years to engineer Kaguya's resurrection recontextualized every event in both series as moves in his impossibly long game. His existence as the physical embodiment of the most ancient conspiracy in the shinobi world makes him one of anime's most effectively retrospective twists.