Ever read one of the Marvel Zombies comics?[link]
Well heres my inspiration for this image. Yeah, when Superheroes become zombies, you should might as well give up all hope kill yourself. The same would apply if this ever happen to the world of Sonic the Hedgehog.
So thank you George Romero for the creation of Zombies today, and also I thank the creators of Resident Evil, Dead Rising, House of the Dead, and Left 4 dead for the glory of Zombies everywhere.
Also check out this masterpiece by Tigerfog:[link]
And this awsome looking Zombie Sonic by Tracy Yardley himself: [link]