Emily
Reason: The fandom treats her as a saint and wholesome character despite the fact that when she found out about the exterminations she claimed that the sinners where "poor souls" who did nothing wrong when many of them are horrible people who are in hell for obvious reasons.
A second one would be Charlie
Reason: Despite being almost at the top of hell's hierarchy she rarely uses her authority on people like Valentino or Alastor. She also never tries to help the hellborn demons despite them being her ACTUAL people and instead choses to help sinners who have done vile things when they where alive.
Another character I hate is Charlie. Like bro, you're the princess of Hell and instead of making it less shitty that it already is, you'd rather help sinners redeem themselves?!?!?! Whatt?!??!?!
Bro I ain't going to lie first time I watched the sneak peeks before the pilot came out, i thought Alastor was cool as f**k but that was because I was like an elementary school and I thought most stuff like that was cool for some reason
maybe she wanted to get rid of him being on the hell side of things, cuz ngl I don't think alastors gonna get redeemed and angel wont until he gets out of his deal