Zach Callison Zach Callison 10/23/97 Actor Biography Zach Callison is an American actor, singer, songwriter and voice actor. Roles Steven Universe (Actor) Steven Universe Prince James (Actor) Sofia the First Steven Universe (Actor) Steven Universe Future Pumpkin (Actor) Steven Universe Future Onion (Actor) Steven Universe Future Stefan (Actor) Steven Universe Future Cactus Steven (Actor) Steven Universe Future Gallery
