Shiki
A kid who grew up surrounded by machines on Planet Granbell. His Ether Gear lets him mess with gravity, so he can basically fly wherever he wants. When Rebecca showed up, she convinced him to leave the planet and explore space with her. He's got this goal of making 100 friends, and together they're searching for someone called "Mother"—which kicks off the whole adventure.
Content compiled by AnimeList.moe from publicly available sources.
