This is a very fascinating comment to me because I cannot think of any comically evil character other than Vin, Irving who is a minor character, and maybe Boris & Yelena??? (Maybe Brandi but Brandi is just annoying...)
But, I do want to say 1) the only thing out in public is Chapter 1 and some stuff is going to come out in Chapter 2-3 as you get closer to things, and 2) that for some characters, that is partially kind of the point, because they have their own prejudices against them or characters are intentionally manipulating the MC to dislike certain people. For example, characters have a lot of opinions about Vito's impotence and Yelena's authoritarian approaches, but politics is much more complicated than that. RH is supposed to be a really long game and things will only be revealed later.