
As Kamata-kun, Godzilla destroyed several buildings and streets, killing a tens or even thousands of civilians. When government tried to convince civilians that the monster's inability to move on land, Godzilla suddenly developed legs and crawl out of Tokyo Bay in his second form. Godzilla first appeared as a huge tail in his first form. In 2016, the creature had grown into gigantic size and was dwelling in the waters of Tokyo Bay. When the United States dumped barrels of nuclear waste into Tokyo Bay in the 1950s, the creature began feeding on this waste, causing him to mutate.

This Godzilla originated as a prehistoric marine animal of some kind, proposed by Professor Goro Maki to be a relative of Paleozoic marine reptiles, which managed to survive into the 20th century. While Godzilla is still portrayed as a colossal prehistoric reptilian-esque kaiju as before, this version of Godzilla is depicted with both a near-vastly different backstory and a more advanced physiology than his predecessors before. Compared to his past incarnations, Shin Godzilla is also significantly more grotesque, monstrous, and biologically bizarre due to his capacity for evolve itself at near-constant state through self-mutation. He was at first indifferent, if not merely unaware of humans, until they hurt him, which with these factors puts him at odds with humanity. Unlike many past incarnations of Godzilla before him (who were either villains, anti-heroes or heroes), Shin Godzilla was neither, but instead was driven by his instinct for survival and adaptation. He was finally defeated by a complex plan orchestrated by government official Rando Yaguchi, but still could not be killed and remained a potential threat as he stood frozen in the ruins of Tokyo.

Now capable of spontaneously adapting to different situations, the Giant Unidentified Lifeform came ashore in Tokyo in 2016 and immediately wreaked havoc, with all of the Japanese Self Defense Forces' weapons having no effect on him. Shin Godzilla is a bizarrely hyper-evolved lifeform, mutated by feeding on nuclear waste dumped on the seafloor in the 1950s. Godzilla, often nicknamed Shin Godzilla (in Japanese: シン・ゴジラ, Shin Gojira) to tell it apart from his original counterpart, is a new radically reinterpreted incarnation of Godzilla and the titular main antagonist of 2016 horror disaster kaiju film Shin Godzilla and the secondary antagonist in the crossover event 4-D short Godzilla vs.
