Peach Salinger (Shay Mitchell)
You know what, Peach isn't so bad. Yes, she's entitled, dismissive, spoilt and obnoxious, but she's pretty cluey, picking up on the fact that Joe just happened to be around when Beck fell onto the subway tracks. And she's a good friend, although we suspect her constant offers of money to Beck would come with some sort of strings. Still, it's pretty telling when someone with all her traits isn't the worst person in the show.
Beck's other friends
Clearly not objectionable enough since we can never remember their names - for the record, they're Annika Attwater (Kathryn Gallagher) and Lynn Lieser (Nicole Kang) - Peach's two hangers-on never seem to work (one's an Instagram "influencer"; the other is in PR) and have approximately zero redeeming features. But they're more a waste of space than anything to get too worked up about.
Professor Paul Leahy (Reg Rogers)
Ugh, there's nothing worse than a married, middle-aged man in a position of authority who preys on vulnerable young women. With his groping hands and abuse of power, this academic deserves everything we suspect he has coming to him.
Mr Mooney (Mark Blum)
Just when we thought Joe's boss was a nice old man, it turns out he may well be part of the reason Joe is the way he is. In Episode 2, we saw the book store owner deal his mentee a blow in a flashback scene. Is anyone else concerned by the fact that we've only seen Mr Mooney in flashback so far?
As you can see, the competition for You's most objectionable character is high, and at this point, Benji is going to be hard to ever beat. But with eight more episodes to go and characters we haven't even met yet, nothing is certain.