All hopes rest in Godzilla saving the day when Emperor Antonio of Seatopia unleashes the giant beetle-like monster Megalon on the world. It is the 13th film in the Godzilla franchise, and features the fictional monster characters Godzilla, Megalon, and Gigan, along with the mecha character Jet Jaguar.

References:
https://en.wikipedia.org/wiki/Godzilla_vs._Megalon