The Simpson: Yellow Planet

Homer Simpson / Kodos / Krusty el Payaso / Sideshow Mel

Marge Simpson / Patty Bouvier / Selma Bouvier / Jacqueline Bouvier

Bart Simpson / Nelson Muntz / Maggie Simpson / Ralph Wiggum / Kearney Zzyzwicz / Rod Flanders / voces adicionales

Lisa Simpson

Kirk Van Houten / Moe Szyslak / Comic Book Guy / Gary Chalmers / Snake Jailbird / Professor Frink / Blubbo's Trainer

Principal Skinner / Kang / Lenny Leonard / Reverend Lovejoy / Rainier Wolfcastle / Ned Flanders

Narrador

Milhouse Van Houten / Jimbo Jones / Todd Flanders

Dolph Shapiro / voces adicionales

Morgan Freeman / Narwhal Wrapped in Plastic

Martin Prince / Üter Zörker

Carl Carlson