• 
  Joe Dante

  (US version)
• 
  Kei Kobayashi

  Dr. Tadokoro (D-1 Project Leader)
• 
  Isao Natsuyagi

  Yuuki
• 
  Nobuo Nakamura

  Japanese Ambassador to Australia
• 
  Shogo Shimada

  Watari (Political Fixer)
• 
  Susan Sennett

  (US version)
• 
  Keiju Kobayashi

  Dr. Tadokoro (D-1 Project Leader)
• 
  Lorne Greene

  Ambassador Warren Richards

• 
  Masaya Takahashi

  Professor Yamashiro
• 
  John Fujioka

  Narita
• 
  Clifford A. Pellow

  (US version)
• 
  Shigeru Kôyama

  Yoshimura
• 
  Tetsurô Tanba

  Prime Minister Yamamoto

• 
  Kenji Takama

  camera and electrical departme
• 
  Tomoyuki Tanaka

  producător

• 
  Yoshirô Muraki

  design de producţie
• 
  Shinobu Hashimoto

  scriitor