• 
  Martin Kove

  The Clown/Martin Kove
• 
  Peter Brown

  Hank O'Hara
• 
  Jeremy Lucas

  Arnie - The Alien
• 
  Scott Bailey

  Robbie Williams
• 
  April Wade

  Wendy Norwood
• 
  Tony Brubaker

  Tony Brubaker
• 
  Mike Moroff

  Dr. Montoya

• 
  Sandy Kanan

  miscellaneous crew

• 
  Mike Moroff

  producător
• 
  John Knoll

  special effects
• 
  Gary Jensen

  cascador