- Tom Wilson
- Ed Klingbottom
- Karim Prince
- Roy Dubro
- M. Emmet Walsh
- Junior Assistant Dispatch Trainee Stanley Snyder
- Brion James
- General
- Wigald Boning
- Strangemeister
- Ben Stein
- Men in Strangemeister's Head
- George Kennedy
- General Vice
- Donna D'Errico
- Press Secretary
- Barry Bostwick
- President Smith
- Rodger Halston
- Glaxxon
- Don Stroud
- Old Bob
- John Bishop
- G-Man
- Charles Philip Moore
- Alien #1
- John Rizzi
- Alien #2
- Patricia Elliott
- Girl Scout Leader
- Melissa Rivers
- Female Reporter #1
- Amy Kidd
- Female Reporter #2
- Blaine Etcheverry
- Male Reporter
- Lacey Taylor Robbins
- Girl Scout
- Michael McDonald
- Secret Service Agent
- Paul Di Franco
- General Pandemonium
- Carlos Bernard
- Alien
- Rob Kerchner
- Lifeguard
- Dave Fennoy
- Glaxxon
- Danny Mann
- Alien #1
- Susan Silo
- Alien #2
- Dee Bradley Baker
- Subordinate Alien
- Bobby Edner
- (voice)
- Glenn Hermans
- Singer
- Kathleen Lantos
- Ring Girl
- Kevin Lee
- G-Man
- Michael Reardon
- Spock
- Joe Ruffo
- Alien #3
- Mary Ann Schmidt
- Bikini Girl
- Seth Bailey
- John Wayne Gacy's 'Pogo the Clown'
- Rob Paulsen
- Dr. Strangemeister
