Mantaro Kinniku

As the 59th prince of Planet Muscle and son of the legendary Kinnikuman, this cowardly yet lovable protagonist begins matches relying mostly on luck and laziness. Though initially a spoiled teenager with a massive appetite for galbi, he transforms during moments of crisis by tapping into his "Burning Inner Strength." When his Niku-Mark appears, his power surges, allowing him to master devastating moves like the Muscle Millennium to protect his friends and love interest, Rinko Nikaido.