I could not say which character annoys me, because in saying that might be missing the whole point of their gimmick. Malcolm, I realize, is supposed to come across as arrogant, since being constantly labled as a genius can go to anyones head. But there is a scene in "Grandma Sues" where they're all in their room discussing with dread the outcome of Lois' fifth child. There was something that Malcolm said in that scene that I found perversely infuriating. I believe he chided everyone for speaking selfishly, only to state that he was the one out of all of them with all the potential. Again, I know that its part of his gimmick to be abrasive, arrogant and hypocritical, but if I was one of his brothers at that moment, I would have given him such a slap. The nerve of that kid, did he really think he had it worse than everyone else? I've known people like that in my time. And I'm never reluctant to put them in their place.