Godzilla is an Acrocanthosaurus with a prehistoric variant of Gigantism called Vetus Giant. In this universe, Acrocanthosauruses didn’t die off in the early Cretaceous period, and eventually adapted and became smarter and more civilized, yet still as primitive as early cavemen. They created a tribe, religion, currency, farming and caste system. Because of the religion, Godzilla, named Zayla at the time assumed her size and strength was a gift from the gods. He then started calling himself Godzayla and he climbed the caste system until he made it to the top, becoming the alpha of the tribe. Two other Acros, unnamed, bring back a dinosaur corpse to share with Zayla. He kindly accepts it and the next thing we know, Zayla is now a Hyper-Adapted monster. Why is this? Because, fast-forward 66 million years, a science team wants to find out what REALLY killed off the dinosaurs. Time travel is already a thing, but doing this has become highly illegal and dangerous. The scientists have made a microchip called the Hyper-Adapter that, when consumed, the consumer becomes extremely adaptable. They went back 66 million years and injected it into a Protoceratops and attempted to bring it back, but the Proto was almost instantly caught by two Acrocanthosauruses, who bring it to their tribe, give it to their leader as an offering and… BOOM! Zayla is now able to adapt to any problem. Eventually, being a contortionist over it all, Zayla goes through the time portal. After seeing pollution, smog, greenhouse gas, extinction and so much more, he realizes the shaved monkeys are behind this. And, after getting the rest of the tribe out, they begin to wage war.