Rinoa and Squall. God how I hate them. Don't get me wrong, they rock in a fight, but outside of that, I want to shoot them both in a place that will make them die slowly and painfully.
Also, I used to hate the Queen from Soul Blazer with a passion because she (SPOILER)KILLED Dr. LEO!
There's also Peach. How many times can one princess get kidnapped? Sure, she joins the fray in SMB2, but outside of that game, she's the typical useless ingenou who can ever hold her own. Mario's just a fat middle aged plumber with no inherent super powers to speak of. How come he can beat up Bowser Koopa and Peach can't? Unless she really just wants to be with Bowser instead, in which case she's one cold mama.