Jimmy Neutron (voice)

Sheen Estevez (voice)

Carl Wheezer (voice)

Hugh Neutron (voice)

Cindy Vortex (voice)

Goddard (voice)

Libby Fallfax (voice)

Judy Neutron (voice)

Junkman (voice)

Travoltron (voice)

King Goobot (voice)

Professor Calamitous(voice)

Brobot (voice)

Zia (voice)

Beautiful Gorgeous (voice)

Ms. Fowl (voice)

Grandma Taters (voice)

Nick Dean (voice)

Tee (voice)

Sam Melnick (voice)