Sean Rafferty (voice)

Mitchell Peterson (voice)

Mindy Melendez (voice)

Jet Propulsion (voice)

Sydney Skelley (voice)

Stella Singularity (voice)

The Great Galacto (voice)

Face 9000 (voice) / Dr. Bergs (voice) / Guard (voice)

Houston (voice)

Aurora (voice)

Carrot Propulsion (voice)

Celery Propulsion (voice) / Stella's Ship (voice)

Dr. Skelley (voice) / Operator (voice)

Dr. Chandra (voice) / Bortronian Veejay (voice)