Rebecca Sugar Creator, Executive Producer Zach Callison Steven Voice Estelle Garnet Voice Michaela Dietz Amethyst Voice Deedee Magno Pearl Voice Lamar Abrams Buck Dewey Guest Voice, Writer Brian Posehn Sour Cream Guest Voice Tom Scharpling Greg Universe, Yellowtail Guest Voice Zach Steel Ronaldo Fryman Guest Voice Jon Wurster Marty Guest Voice Curtis Lelash Executive Producer Brian A. Miller Executive Producer Jennifer Pelphrey Executive Producer Rob Sorcher Executive Producer Katie Mitroff Writer