Rebecca Sugar Creator, Executive Producer Zach Callison Steven Voice Estelle Garnet Voice Michaela Dietz Amethyst Voice Deedee Magno Pearl Voice Peter Browngardt Uncle Grandpa Guest Voice Eric Bauza Belly Bag, Narrator Guest Voice Adam DeVine Pizza Steve Guest Voice Kevin Michael Richardson Mr. Gus Guest Voice Matthew Moy Lars Barriga Guest Voice Dee Bradley Baker Lion, Dolphins Guest Voice Curtis Lelash Executive Producer Brian A. Miller Executive Producer Jennifer Pelphrey Executive Producer Rob Sorcher Executive Producer Joe Johnston Writer Jeff Liu Writer