Megalon(New Age of Monsters)

Megalon is an ancient cockroach Kaiju that first appeared in the fourth season of Godzilla: New Age of Monsters. He is the arch enemy of Jet Jaguar, a longtime foe of Manda, and one of Godzilla's enemies.

Origin
Megalon is the guardian of the Seatopians.

History
In 1973, Megalon was sent to destroy the surface, but he was defeated by Godzilla.

Emperor Antonio sends Megalon to attack the surface world and to destroy the humans, their mortal enemies of the Seatopians, the Mu Empire and their guardian monster, Manda. However, the Gammas, Giant Robo, and Jet Jaguar went on to battle the insect monster as the Seatopians contact the Space Hunters to send Gigan for help when Godzilla shows up with Titanosaurus and Gorosaurus. After Megalon and Gigan were defeated by Godzilla and Jet Jaguar, Gigan flies back into space while Megalon goes back to Seatopia.