Gloomius Maximus (voice)
Spaceboy / Young Dad (voice)
Billy Bevel (voice)
Zowie (voice)
Olie (voice)
Spot / Spacedog (voice)
Mom / TV Journalist (voice)
Pollie Pi (voice)
Screwy (voice)
Wheelie (voice)
Pappy / TV Announcer (voice)
Dad / Gizmo (voice)
Young Gizmo (voice)
Willy Jollie (voice)
Wally Jollie (voice)
Doctor Geary (voice)
Baxter (voice)
Bonita (voice)
Binky (voice)
Junior Littlegreen (voice)
Gene Littlegreen (voice)