Shadow the Hedgehog x My Little Pony Friendship is Magic
Sonic and Shadow was on a mission to stop dr eggman to attack central city, eggman built a creation to defeat both sonic and shadow. eggman tried to shoot sonic with it but shadow quickly saved him. However, he got hit with the blast instead. Instead of dying, shadow finds himself teleported to a Equestria, a world of anthropomorphic ponies and other creatures. Stuck in Equestria permanently. Shadow will face new and old enemies, he will save Equestria from evil. (This story takes place 3 years after the season 9 finale when the defeat of Tirek, cozy glow and chrysalis, and shining armor will be genderbent)