You are...

Dr. Cox

A.K.A. "The Big Jerk"

Rebel, thy name is YOU! You don't do things by the rules -- at all -- and you're damn proud of it, despite the fact that such a philosophy tends to bite you in the ass more often than you like. Your brusque and sarcastic manner puts off most around you, but your high standards elicit nothing but respect. It's possible that your rough exterior is a cover to deeper, more vulnerable feelings inside. Only you know for sure.