PlotAn inventor creates a humanoid robot named Jet Jaguar that is seized by the undersea nation of Seatopia. Using Jet Jaguar as a guide, the Seatopians send Megalon as vengeance for the nuclear tests that have devastated their society. RATING 4.8 6k Votes GENREAction, Adventure, Family STARSKatsuhiko Sasaki, Hiroyuki Kawase, Yutaka Hayashi