Destoroyah

Destroyah is a Mutant creature of Toho's Dai Kaju Eti, or Giant Monster Movies. He is also known as the living incarnation of The Oxygen Destroyer. Destroyah was a single organism that existed during the Precambrian Period, and still lives on. However, It was mutated from The Oxygen Destroyer, invented by Dr. Serizawa, and little bit of help from Leon, who is now Void Cubia. The mutation began to take affect on an aquarium's fish tank killing all the fish inside. It eventually mutate into an mixbreed of Xenomorph, Yuatja (Predator), and a scorpion, only to have other creatures like him combine into becoming an Alternate Form of Destroyah, and Fly in his flying form. His Mutation evolved further when crash into a power plant, thought to have been destroyed, only to return in his true and final form, resembling the devil in beast mode. He met his end when his wings were blasted off by fireworks, destroying him in the process. However, when a small piece of him survived into Equestria, and discovered by Discord. He learned that this creature was already begin to rebuild himself in Equestria, but sealed away, by Discord so that no one ever knew, until he escaped. Soon Destroyah began a campaign of terror as he continues his desire to end everything, with his power as, The Oxygen Destroyer, Destoroyah. However he also has to deal with, Godzilla, and the Adventure Teams along the way.

Trivia

 * Destroyah will be mentioned at the end of Arik's Adventures of My Little Pony: Friendship is Magic: Keep Calm and Flutter on.