Debi Derryberry

Jimmy Neutron (voice)

Jeffrey Garcia

Sheen Estevez (voice)

Rob Paulsen

Carl Wheezer (voice)

Mark DeCarlo

Hugh Neutron (voice)

Carolyn Lawrence

Cindy Vortex (voice)

Frank Welker

Goddard (voice)

Crystal Scales

Libby Fallfax (voice)

Megan Cavanagh

Judy Neutron (voice)

Charlie Adler

Junkman (voice)

Jeff Bennett

Travoltron (voice)

S. Scott Bullock

King Goobot (voice)

Tim Curry

Professor Calamitous(voice)

Paul Greenberg

Brobot (voice)

Maurice LaMarche

Zia (voice)

Wendie Malick

Beautiful Gorgeous (voice)

Andrea Martin

Ms. Fowl (voice)

Edie McClurg

Grandma Taters (voice)

Candi Milo

Nick Dean (voice)

Kevin Michael Richardson

Tee (voice)

Billy West

Sam Melnick (voice)