Inventor Goro Ibuki creates a humanoid robot named Jet Jaguar. It is soon seized by an undersea race of people called the Seatopians. Using Jet Jaguar as a guide, the Seatopians send Megalon as vengeance for the nuclear tests that have devastated their society.
佐々木勝彦
林ゆたか
Hiroyuki Kawase
森幹太
富田浩太郎
大月ウルフ