Does it count if they are intentionally annoying? I really hate those "fans" in Gothic (Mud) and Oblivion (Adoring Fan).
Those kids from Lost Odyssey most annoying characters I've ever seen in a videogame. Every scene they are in they are the most horrifically grating anime cliché kids; and in the end I had to quit the game, which I was enjoying, because I couldn't take them any more.
From what I remember, he's an immature, whiny, selfish little kid driven only by his unjustified desire for revenge towards Snow. It wasn't even Snow's fault his mother died, but he just had to blame someone.
Okay, his mother just suddenly died. ANYONE ANYONE who loses someone suddenly is going to be an emotional wreck and grasping for answers not to mention a 15 year old kid. Hope blamed Snow for his mothers death because he needed SOMEONE to blame because he couldn't cope with the fact that she was gone. Seriously, what do you expect the kid to do? Be like "Lol, my mom died guyz"?
After he reaches his character arc and deals with the death of his mother emotionally he starts to change as a person and you see this change in FFXIII-2 where he is a entirely self-confident driven individual.
I'm not saying the character's motivations don't make sense, but he's not good as a main character. Bullies at school normally have really horrible homelives but it still doesn't make them nice people to hang out with.
Maybe the kid from Ni No Kuni gets over his mothers death a little fast, but it makes for a fun character who isn't just moping through the entire game.
Rico from killzone has got to be one of the most annoying characters ever. All his constant yelling and other stupid bs he did was just annoying as all hell.
I'd like to submit "every character from Killzone 2 ever" is the worst character ever. That whole game felt like it was written by a 14-year-old, and I couldn't even tell you any distinguishing traits of any of the characters, beyond "Rico has ADD and can't just sit still and instead has to fucking shoot people and make everything worse". Rico might actually be the best character from Killzone 2, because at least you have any feelings about him at all. What could you tell me about, I dunno, fucking Garza? Or Sev, even?
Edge Maverick and the entire rest of the cast of Star Ocean 4. It almost feels like the writers went out of their way to make these characters as stupid as possible and to purposely include every single cliche of bad anime ever. What Edge does in the "earth" section may quite possibly be THE dumbest thing I have ever seen in a game. Not to mention that Edge Maverick is probably the worst name I have ever heard as well. There's just nothing good about him, at all.
You've forgotten Waluigi ... that guy was invented for Mario Tennis ...
And Luigi was invented as a player 2 Mario. I'm not saying either is a good or bad character as I've never been all that invested in the Mario franchise, it's just I've never understood the disdain people have for Waluigi.