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.
You can now watch Godzilla vs. Megalon online on the following streaming providers in the United States.
| Camera | Yuzuru Aizawa | Director of Photography |
| Editing | Michiko Ikeda | Editor |
| Directing | Jun Fukuda | Director |
| Production | Tomoyuki Tanaka | Producer |
| Sound | Riichirō Manabe | Original Music Composer |
| Art | Yoshifumi Honda | Production Design |
| Visual Effects | Teruyoshi Nakano | Special Effects Supervisor |
| Writing | Jun Fukuda | Screenplay |
| Writing | Shinichi Sekizawa | Original Story |
| Art | Yoshifumi Honda | Art Direction |
| Sound | Eishiro Hayashi | Sound Recordist |
| Lighting | Masakuni Morimoto | Lighting Technician |
| Writing | Shinichi Sekizawa | Lyricist |
| Sound | Masato Shimon | Vocals |
| Directing | Tsunesaburo Nishikawa | Assistant Director |
| Production | Keisuke Shinodo | Production Manager |
| Crew | Teruyoshi Nakano | Special Effects |
| Visual Effects | Teruyoshi Nakano | Visual Effects Director |
| Visual Effects | Motoyoshi Tomioka | Visual Effects Camera |
| Crew | Toshiro Aoki | Visual Effects Art Director |
| Visual Effects | Takeshi Miyanishi | Visual Effects |
| Visual Effects | Shoji Ogawa | Visual Effects |
| Crew | Shoji Ogawa | Special Effects |
| Visual Effects | Kazunobu Sanpei | Visual Effects Compositor |
