Debi Derryberry
James Isaac 'Jimmy' Neutron (voice)
Acting
Christian Slater
Jet Fusion (voice)
Acting
Wendie Malick
Beautiful Gorgeous (voice)
Acting
Michael Clarke Duncan
Commander Baker (voice)
Acting
Tim Curry
Professor Calamitous (voice)
Acting
Dan Castellaneta
Professor Crank (voice)
Acting
Frank Welker
Goddard (voice)
Acting
Rob Paulsen
Carl Wheezer / Monk / Voice / Clam (voice)
Acting
Megan Cavanagh
Judy Neutron / Ms. Jingle Bells / Female Monk (voice)
Acting
Mark DeCarlo
Hugh Neutron (voice)
Acting
Jeffrey Garcia
Sheen Estevez (voice)
Acting
Andrea Martin
Ms. Fowl (voice)
Acting
Carolyn Lawrence
Cindy Vortex / Tina Sue (voice)
Acting
Crystal Scales
Libby Fallfax / Ike (voice)
Acting
Kath Soucie
Betty Quinlan (voice)
Acting
Corey Burton
Narrator / Head Monk
Acting
Ving Rhames
Chief (voice)
Acting