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.

Directed by: Jun Fukuda
Written by: Jun Fukuda
Release date: 1973-03-17
Runtime: 82 minutes
Critics score:
Tagline: Dreaded Megalon from the undersea kingdom!
Related titles:
Cast:
Gorō Naya Gorō Naya
Emperor Atonio of Seatopia (voice) 
Katsuhiko Sasaki Katsuhiko Sasaki
Inventor Goro Ibuki 
Hiroyuki Kawase Hiroyuki Kawase
Rokuro 'Roku-chan' Ibuki 
Yutaka Hayashi Yutaka Hayashi
Hiroshi Jinkawa 
Robert Dunham Robert Dunham
Emperor Antonio of Seatopia 
Kotaro Tomita Kotaro Tomita
Lead Seatopian Agent 
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Also known as:
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  • Godzilla Vs. Megalon
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  • At the Borders of Reality
  • Dünyayı Titreten Canavar
  • Godzilla 1980
  • Godzilla Against Megalon - At the Borders of Reality
  • Godzilla contro Megalon - Ai confini della realtà
  • Godzilla vs. Megalon: The Undersea Kingdom's Annihilation Strategy
  • Godzilla: Ιπτάμενος Υπεράνθρωπος
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