• 
  Akio Ôtsuka

  Nemo
• 
  Yasunori Matsumoto

  Nautilus crew member
• 
  Tamio Ôki

  Doctor Woolar
• 
  Kôji Tsujitani

  Eâton
• 
  Noriko Hidaka

  Jean
• 
  Kikuko Inoue

  Electra
• 
  L.B. Bartholomee

  Geiger's Chief Henchman
• 
  Shuichi Ikeda

  Fly

• 
  Martin Blacker

  Sanson
• 
  Masashi Ebara

  Science pressman
• 
  Kumiko Takizawa

  Grandis
• 
  Grant James

  Dr. Geiger
• 
  Toshihiko Seki

  Feito
• 
  Edwin Neal

  Jean's Uncle, Newspaper Editor
• 
  Tessho Genda

  Chief newspaper editor

• 
  Tessho Genda

  Chief newspaper editor
• 
  Tessho Genda

  Chief newspaper editor
• 
  Yoshino Takamori

  Nadia
• 
  Yûko Mizutani

  Marie

• 
  L.B. Bartholomee

  scriitor