Mom / VOX (voice)
Dad / Pilot / Arena Guard (voice)
James 'Jimmy' Isaac Neutron (voice)
Sheen (voice)
Newscaster (voice)
Cindy Vortex (voice)
Miss Fowl (voice)
Nick / Britanny / PJ (voice)
Carl / Carl's Mom and Dad / Kid in Classroom / Kid (voice)
Libby (voice)
Ooblar (voice)
King Goobot (voice)
Ultra Lord / Mission Control / General (voice)
Yokian Guard / Gus (voice)
Zachery / Reporter / Angie (voice)
Guard (voice)
Hostess (voice)
Little Girl / Camera Person (voice)
Chris (voice)
Octapuke Kid / Guard / Bennie (voice)
Bobby / Kid / Control Yokian (voice)
Digital Voice (voice)
Screamer (voice)
Yokian Incubator Operator (voice)
Goddard / Orthgot / Worm / Demon / Poultra / Girl Eating Plant / Oyster (voice)
Yokian Officer / Jailbreak Cop / Guard / Robobarber / Anchor Boy / Old Man Johnson / Flurp Announcer / Bobby's Twin Brother / Butch (voice)
Hyperactive Kid / Arena Yokian (voice)
Sheen's Dad (voice)
Norad Officer (voice)