Something I really like about Gravity Falls, and I mean this with absolutely no offense to the girls, is it does a good job of writing characters that would be bullied. Like... Candy, Grenda, and Mabel are really weird kids. They are so unabashedly themselves in a way that is not what is prescribed for them. I had no trouble believing that Pacifica and her gang would make fun of them.
A lot of shows have kids who are bullied that just have like, one “funny quirk” away from them being the same as the “normal” kids. And I’m not saying that those types of kids can’t also be bullied! It’s just that... other shows seem so afraid of actually writing kids who are loud or fat or quirky and instead stick “awkward” on a pretty thin girl and call it good enough.
It’s so nice to see these kids being extremely different and loving themselves and loving each other for it. There’s never a plot about these three wanting to fit in — hell, even the one episode about Mabel wanting to be more normal utterly rejects it and shows off how her being silly is great. The narrative of this show can spin it like “yeah, look how genuinely different these kids are. the bad guys make fun of them for it, but we think it’s awesome.”