Which anime character do you hate/pisses you off and why?

For me it's Taiga, she's such a typical tsundere. Her constant screeching and irrationality pisses me off so much, I get that it's meant to be a part of her "character" but I really couldn't stand watching more than 3 episodes of Toradora! because of her.Edit: Sometimes it feels good to get all the salty out of your system. http://ift.tt/1N371b7