Fan Casting Sonic the Hedgehog

In the far space of the galaxy, there exist a planet unknown to mankind called, Morbius, whose inhabitants are anthropomorphic animals who coexist with eachother peacefully. Howerer, all of that changed when a mad man only known as, Doctor Robotnik was able to conquer the planet and ruled it with a iron fist. Now, a young hedgehog called, Sonic and his allies, The Freedom Fighters, prepare to fight back against Robotnik's forces and free Morbius once and for all