Does Terra count? Because she annoyed the crap out of me. I get that "oh, but you'd be depressed to and give up hope all the time as well if you were in her situation!", but oh man, I'm playing a game and I'm trying to enjoy it, but she keeps bringing in the blues. Urgh.

Beyond that, eh, nobody really stands out off the top of my head. D= If you were to count Vaan, I wouldn't say I hate him but I didn't find him amazingly appealing.