• 
  Arthur Seidelman

  regizor

• 
  Aubrey Wisberg

  scenarist

• 
  Arnold Schwarzenegger

  Hercule
• 
  Arnold Stang

  Pretzie
• 
  Deborah Loomis

  Helen
• 
  Merwin Goldsmith

  Maxie
• 
  Rudy Bond

  Ship Captain
• 
  Oliver Clark

• 
  Frank Gio
• 
  Richard Herd

  Johnny, the Athletics Coach
• 
  Taina Elg

  Nemesis
• 
  James Karen

  Professor Camden
• 
  Lane Carroll
• 
  George Bartenieff

  Nitro
• 
  Harold Burstein

  Rod Nelson (as Howard Burstein)

• 
  Ernest Graves

  Zeus
• 
  Michael Lipton

  Pluto
• 
  Tanny McDonald

  Juno