Yamato

Yamato is the child of Kaido, one of the Four Emperors. After witnessing the legendary samurai Kozuki Oden's execution at age 8, Yamato deeply idolized him and chose to "become" Oden, adopting his name and fighting style. Kaido imprisoned Yamato in Onigashima with explosive shackles for this defiance. Yamato possesses the Inu Inu no Mi, Model: Okuchi no Makami — a Mythical Zoan that transforms the user into a divine wolf deity. Yamato fought alongside Luffy and the samurai alliance during the Raid on Onigashima, holding off Kaido one-on-one until Luffy's return.