The son of the Ultimate Daimyo, the Ultimate Ninja first came to Earth to fight Oroku Saki, The Shredder. However, he was deprived of the chance after learning that the Shredder had seemingly met his death at the hands of Leonardo; in response, he challenged Leonardo to a duel, and the two fought. Where Leonardo fought with honor, the Ultimate Ninja did not, and even attempted to kill Leonardo by conjuring up a dragon, which the Ultimate Damiyo killed, after the fight ended. The Ultimate Damiyo appered, and saluted Splinter for teaching his sons such honor.
- The Ultimate Ninja will join the Eds' team in the future.