Bill Cosby
This one differs from some of the others on this list because it’s not one of these “Wow, did you know this largely unknown but alarming fact about this person?” situations. I mean, we all know what Bill Cosby did and why it’s all pretty terrible, right?

But I think he really ties into the main theme of celebrities who have disappointed you. Because as this poster pointed out, Bill Cosby disappointed all of us in a very real way. He always seemed like this upright guy who wanted us all to be our best selves, like that one teacher you had in high school who expected a lot of you, and because of that, you improved your life. So it seemed like an even worse betrayal would it turned out that he’d done some pretty terrible stuff.