I just remembered earlier that this thread exists and I had to make an addition. One character I completely despise now is Mahito from Jujutsu Kaisen. I kind of liked him at first, I thought his design was super cool. But the more he gets screen time the more you absolutely hate him. He's...
To be fair, everyone in TP besides Link, Zelda, and Midna were freakishly ugly. Like really, really, really ugly. But I never minded Ooccoo that much (in case ya couldn't tell from my username XD). They're kinda just people chickens. The two people I did hate from TP were those two clown dudes...