Cast[]
- Jimmy Neutron as Olie
- Betty Quinlan as Zowie
- Goddard as Spot
- Judy Neutron as Polina
- Hugh Neutron as Percy
- Newt Neutron as Gizmo
- Granny Neutron as Pappy (both old; genderbent role)
- Cindy Vortex as Polie Pi
- Carl Wheezer as Billy
- Nick Dean as Binky
- Martha Wheezer as Bonita
- Ebenezer Wheezer as Baxter
- Sheen Estevez as Screwy
- Bolbi Stroganovsky as Wheely
- Professor Calamitous as Gloomius Maximus
- Mrs. Fowl as Ms. Ehtel