without the resident bully, meanie, troll, instigator, agitator, whatever label you prefer. He typically employs an arrogant and condescending tone and enjoys clever name calling. He has a loyal band of followers who readily defend him, and he garners the most responses of any other poster due to his "shock jock" style of posting. For this reason, he is allowed to skirt board rules and is looked upon by some as essential to the success of the board.
There is nothing unique about this class of poster; they're a dime a dozen as they can be found on any online board on any topic whatsoever.