I made this for a fan on deviant art, its his fan character, Slain. Slain is mostly a Shadow recolor but with a massively redesigned head. He has Silver's "pot leaf" forehead spines, Knuckles sideburn dreads, and even some extra spines on the back of the head. The body was a pretty simple repaint, but I had to use polymer clay to make all the new head spines and extend the ones that were already there.
