Cast[]
- Yakko Warner as Jimmy Neutron
- Wakko Warner as Carl Wheezer
- Dot Warner as Cindy Vortex
- Dr. Otto Scratchansniff as Mr. Neutron
- Hello Nurse as Mrs. Neutron
- Thaddeus Plotz as Comander Baker
- Ralph the Guard as Giggles the Clown
- Mr. Director as Principal Wiloughby
- Miss Flamiel as Ms. Fowl
- Pinky as Ooblar
- Brain as Eustace Strych
- Slappy Squirrel as Beautiful Gorgeous
- Skippy Squirrel as Bolbi Stroganovsky
- Pesto as Zix
- Bobby as Travoltron
- Squit as Tee
- Mindy as Britney Tenelli
- Buttons as Goddard
- Rita as Libby Folfax
- Runt as Sheen Estevez
- Flavio Hippo as Mr. Wheezer
- Marita Hippo as Mrs. Wheezer
- Minerva Mink as Elke Elkberg
- Walter Wolf as Jet Fusion
- King Salazar as Professor Calamitous
- Road Runner (from Looney Tunes) as Paul the Three Eyed Monkey