• 
  Kinji Fukasaku

  regizor

• 
  Ivan Reiner

  scenarist

• 
  Luciana Paluzzi

  Dr. Lisa Benson
• 
  Ted Gunther

  Dr. Hans Halvorsen
• 
  David Yorston

  Locotenent Curtis
• 
  Richard Jaeckel

  Commander Vince Elliott
• 
  Ann Ault

  Nurse
• 
  Robert Dunham

  Capt. Martin

• 
  Linda Hardisty

  Nurse
• 
  Kathy Horan

  Nurse
• 
  Robert Horton

  Commander Jack Rankin
• 
  Richard Hylland

  Michaels
• 
  Jack Morris

  Lt. Morris, Rocket Pilot
• 
  Don Plante

  Technician
• 
  Gary Randolf

  Cordier

• 
  Eugene Vince

  Technician
• 
  Bud Widom

  General Jonathan B. Thompson