Godzilla Vs. Megalon (1977)

Godzilla's creators show their gratitude to misguided but faithful American audiences by transforming the giant monster into a good guy. This time, the world is threatened by Megalon, the giant cockroach, and Gigan, a flying metal creature, simultaneously. Fortuneately, the slippery hero's robot pal Jet Jaguar is on hand to slug it out side by side with Tokyo's ultimate defender.