Hmm...
1. Daisy (from Mario Kart DS): Her voice made me want to gouge my own eyes out.
2. Edge (Final Fantasy IV): I can't stand ladies men.
3. Rawk Hawk (Paper Mario: The Thousand Year Door): I hate people who act like they're the God of whatever.
4. Leila (Final Fantasy II): She is the worst character in the game.
5. Piscodemon (Final Fantasy I): Stupid powerful attacks.

6. Kaepora Gaebora (Legend of Zelda series): Stupid annoying owl that pops up exactly when I don't want him to, telling information I've known for at least two hours before I see him.