Black Zetsu (黒ゼツ, Kuro Zetsu) is the physical manifestation of Kaguya Ōtsutsuki's will. Having been created to secure its creator's revival, it secretly instigated many events that shaped the shinobi world,[4] during which it posed as Madara Uchiha's manifested will, leading to it being partnered with White Zetsu to become half of the Akatsuki member known simply as Zetsu (ゼツ, Zetsu).