I hated Sly for a LOOOOONG time because he moved in and killed my orchard and black roses.
I even made my birthday wish "Sly to move out" (forever stuck with it cause i TT great) but honestly hes pretty cool really.
I also hated Paula the Uchi bear. I just flat out don't like how she looks.
Hm. . . Hate's a bit too strong a word, but snooties in general I do not like. Too self-absorbed & always criticizing other villagers. Aesthetically I dislike most of the mice villagers.