Shiki Granbell

Shiki Granbell is the only human living in the robot-populated Granbell Kingdom. Though socially awkward, he possesses a kind heart and uses the Ether Gear inherited from the legendary Demon King to manipulate gravity through an ability called "Satan Gravity." Motivated by his artificial family's wish for him to find real companionship, Shiki travels across the universe alongside Rebecca to explore new worlds.