What character can't you stand?

What character can you absolutely not stand, in a series that you enjoy?

Absolutely everyone in Once Upon A Time except for Regina and maybe Red

Eugene in The Walking Dead. I dont know why, but I just cannot stand him when he talks.

Yes River Song in Doctor who. I hate her and ruins every single episode she is in for me.
Also Hook in OUAT. He annoyed me so much last season and my fave character died because of him.

child actors most of the time but I try to be nice and not let their bad acting distract me too much

Paul in Pokemon Season 10 (Diamond & Pearl) in particular. I just rewatched an episode I haven't seen since it was first out on TV and basically he only treats pokemon as objects not as having feels and is just SO ANNOYING. I remember watching this episode I've just seen again and actually crying a bit when he forced his Chimchar to leave because it "wasn't good enough" :/ Got all fired up now tbh

Brendan O'Carroll

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Brendan O'Carroll (Agnes Brown)

River song from Doctor Who

River Song from Doctor Who and Cassie from Skins (series 1 and 2)

I strongly disliked River Song as well.
Henry from OUAT is a bit annoying.