Afton's Endgame(Princess Quest Ending/Crossover Fanfic)

As he escapes the Pizzaplex with Freddy, a new hope dawns on Gregory's future. However, William Afton, the Springtrap, is now much more aware of his impending doom than ever. In true madman fashion, Afton decided that if he dies, then the whole world goes down with him. But as reality breaks and chaos erupts, both Gregory and Afton will meet faces familiar and unfamiliar...faces from other worlds and timelines far beyond their own. And now only one question remains. Can Gregory and his new allies stop Afton and his DOPPELGANGERS from burning down the Universe?