Godzilla (Dawn of the Godzilla Universe)

Godzilla is an irradiated Godzillasaurus kaiju created by Toho and occasionally appears in The Dawn of Monster Kid while becoming the titular kaiju star of The Dawn of Godzilla. He is known to be the greatest threat to Japan since the original Godzilla attack Tokyo in 1954.

Origin
Godzilla and the rest of his kind are members of a species of dinosaur called Godzillasaurus, that survived the extinction of the dinosaurs at the end of the Cretaceous Period. At some point after WWII, a Godzillasaurus living on Lagos Island, was mutated by nuclear fallout from the H-Bomb.