My favorite person in this can to brawl is Bob. Though be beats me most of the time against his uber DDD and other chars, i learn a lot from the games i play with. Also, he always gives a good fight and i always find my self getting better after a few losses.
My second faorite person to brawl is Boom. Usually when we play the first few games, I usually begin my beating him. But a couple games in, and he starts improving like crazy, to the point where he is equal, if not better than me. So its just a fn challenge to see how any rouds i can win against him XD.