-I have a categorical hatred of the first generation of Pokemon, especially for Red, Giovanni, and Charizard. There are individual Pokemon I like from gen one, but I despise the original 151 as a group. I'm sick of them being shoved down my throat.
-Waluigi.
-Much less known character, but Emile from Dragalia Lost had such an offensively bad 'redemption arc' it killed what remained of my interest in the game's story. His long teased 'tragic backstory' essentially turns out to be that he has affluenza, and you have to sit through the game saying people were mean to him for not being a fighter while ignoring his active participation in genocide (of a species where killing them leaves the land infertile by the way) and tearing down housing to build a statue of himself. All with no reluctance or guilt.
But we're supposed to feel bad for him because nobody told him you have to be respectable to get respect so all the murder and attempted murder is okay. And when I played most of the playerbase fell for it and got mad at the heroes for being 'mean' to him. The fandom did this with other villains including making posts about why in story genocides were totally justified, but Emile was the most outrageous.
-The 'Aztec' characters in Fate Grand Order are liked by the fandom from what I can tell, but that doesn't change them all being racist caricatures who clog up my searches for social media posts about my favorite mythological figure (I've had to apply so many filters to keep the Fate version out that I feel my hate can be justified with that alone).