I kind of have mixed feelings about Chloe from Fairly Odd Parents. Like, yeah, her character design is super cute, but I'm still kind of unsure as to why she needs fairies.
I really hate the term 'Mary Sue', because it seems like people like to slap that label onto any character these days, but Chloe is pretty much the textbook definition of one (i.e: Can do no wrong, everyone, including Crocker, likes her except for the ooc main character, which is a super common mary sue fic trope.)
Another thing I noticed is that Timmy hated her from the very beginning. Like, Timmy’s kind of a jerk, but I don't think he wouldn’t just blindly hate someone like that especially not a girl. Also, I remember him having no problem with perfect characters in the past (After all, he had a crush on Trixie Tang for a good majority of the show.)
I think the biggest Mary Sue trait to her though is the fact that she got fairies (the main character’s fairies no less) despite the fact that her life is pretty much 100% perfect? It really makes no sense considering that Timmy was so miserable he got two fairies (four if you include Poof and Sparky.) and now he has to share them with someone who doesn’t need them. You could have given the fairies to anybody else in the show that needed them more (i.e: Chester, Tootie, Trixie, Veronica. Even Missy could have gotten them because we don't know much about her aside from the fact that Timmy liked her.) but I dunno. Maybe Chloe will grow on me, and maybe we'll get to see more to her as the season goes on, because even though we've seen that she's perfect so far, maybe that will change (Maybe she has perfectionist parents, or a sibling she's always compared to?)
I'm still keeping my hopes up.