Simple idea for this thread. Pick a show that you think is really good, but has a character on it that you can't stand.
The example that inspired this thread:
Brooklyn Nine-Nine - Gina Lanetti: She just annoys the crap out of me with her attitude and the show wants to show her as right most of the time for some reason - that she has crazy methods, but they usually pay off for the benefit of others. I can never sympathize with her and maybe it's the actress, but I feel the character doesn't actually care about the rest of the Squad. She comes across as a sociopath rather than "quirky" or even funny.