- Rodger Bumpass
- Baby Huey / Irv (as Roger Bumpass)
- Stephen Furst
- Phantoms' Manager / Voice of Baby Huey
- Joseph Bologna
- P.T. Wynnsocki
- Maureen McCormick
- Nick's Mom
- Harvey Korman
- Professor von Klupp
- David L. Lander
- Bernie
- David Leisure
- Nick's Dad
- Michael Angarano
- Nick
- John Vernon
- Principal Scotti
- Tiffany Taubman
- Little Audrey
- Rachel Snow
- Lotta
- Denny Dillon
- Crabby Mom
- Kate Simmons
- Patsy
- Laraine Newman
- Minnie
- Allyce Beasley
- Elsa
- Stuart Pankin
- Umpire
- Peter Jurasik
- Tigers' Manager
- Leonard Joseph
- Gym Teacher
- Melissa Haizlip
- Miss Twinkle
- Promise LaMarco
- Math Teacher
- Howard George
- Trucker
- Gabriel Bologna
- Hunting Store Clerk
- Joseph S. Griffo
- Magician
- Eva Jenickova
- Las Vegas Dancer
- Annabeth Miller
- Las Vegas Dancer
- Whitney Taubman
- Dancing Kid
- Lauren Leigh
- Middle School Student
- Phaedra Neitzel
- Middle School Student
- John J. Stephens
- Middle School Student
