You can make fun of his haircut all you want, but when a guy is pointing a loaded twelve gauge at you, normally you wouldn't try to say anything which would set him off. The thing with Anton "Sugar" though, is that he doesn't care. You could, in fact, say that he's a man who just doesn't have a sense of humor.
Very cool illustration; I like the hue you've chosen for the wood paneling. There's a few details that I could nitpick or suggest; but at the end of the day it's your style, and the presentation is generally very good as it is.
All in all, great work!