Really? Whoops, I didn’t know those features were a part of the stereotype.
To be honest this was largely inspired by the final Scarecrow design from the 90s Batman cartoon and that was based off of a western preacher costume.
He's supposed to be wearing a fisherman's hat and the spines were once whaling spears and hooks that were later changed to squiggly hedgehog spines. The curls around his face are tattered bandages and seaweed. I remember at some point I tried to make him look like a “battered corpse that rose out of the ocean” with cues toned down later for making things too convoluted.