as Sean Rafferty (voice)
as Mitchell Peterson (voice)
as Mindy Melendez (voice)
as Jet Propulsion (voice)
as Sydney Skelley (voice)
as Stella Singularity (voice)
as The Great Galacto (voice)
as Face 9000 (voice) / Dr. Bergs (voice) / Guard (voice)
as Houston (voice)
as Aurora (voice)
as Carrot Propulsion (voice)
as Celery Propulsion (voice) / Stella's Ship (voice)
as Dr. Skelley (voice) / Operator (voice)
as Dr. Chandra (voice) / Bortronian Veejay (voice)