LogFAQs > #968301634

Putting aside any irl people because holy fuck there are so many terrible people out there... still can't narrow it down so I'll just list some that spring to mind.

The main character's parents in End Roll, Solon from Tales of Legendia, DA2's Alrik, Charmles from DQVIII, Brian Irons from RE2, Ragou from Tales of Vesperia, Mr. Hoffman from Rule of Rose, Arcturus Mengsk from SC2, etc... any Nazi/Nazi inspired character (Kvar from Tales of Symphonia is a very straightforward example) pretty much, most power-abusing religious figures (fuck it I'll name an irl example... scam artists like Peter Popoff are absolute scum of the earth who should all be in prison).

Any abusive pos, especially to children, usually does it for me. A surefire way to get me to particularly hate a character is to make them utterly vile and then have a scene where they pull some sort of sob story out of their ass at the last second. Bonus points if whoever they're whining to actually buys into it, or if the heroes suddenly are like "oh man maybe we shouldn't kill this fucker" or they have this weird crisis after killing them about oh no what if we did the wrong thing because the guy told a sad story? Ugh. Xenoblade 3 did this with some of its villains and it was insufferable.

... But if I'm being unfair? I really hate obnoxious voices. If a character or person has a voice I dislike it sometimes tips over into being almost physically painful and I have to get away from them, and it's a surefire way to ruin something for me.