Jigen

Jigen is the human vessel of Isshiki Otsutsuki and the leader of the secret organization Kara. Originally an ordinary monk, Jigen was parasitized by a desperate Isshiki after Kaguya betrayed and left Isshiki near death. Over centuries, Isshiki used Jigen's body as a host, enhancing it with Karma and scientific ninja tools while building Kara to further the Otsutsuki plan of cultivating a new God Tree. As Kara's leader, Jigen commanded the Inners and directed the search for a new, more suitable vessel, eventually choosing Kawaki. Jigen's body proved powerful enough to individually defeat both Naruto and Sasuke, though the strain of Isshiki's power ultimately caused his body to disintegrate when Isshiki was forced to fully manifest.