- Director Jun Fukuda
- Runtime 1 hour 22 minutes
- Genres Science-Fiction, Fantasy
- Language Japanese
Dreaded Megalon from the undersea kingdom!
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.