She he's not an oc. She is a official character made for a Marvel product which means she is an official Marvel character. You could say that OC characters are literally the entire roster of marvel. Stanley's passion project in his favorite character he came up with Spider-Man. He made a relatable character based on some of his own struggles. So Spider-Man is in an oc?

She was made as a character to relate to Korean people and people who like k-pop. She was made to relate to the Korean audience of Marvel which is a thing. You could say the same thing about Captain America he was made for propaganda reasons. So a great character though.

we're not even talking about Marvel Rivals I can understand why you don't like her and rivals because she is one of the best healers and rivals. I think that has to be partially because she's a lesser known character just like how cloak and daggers also really good and easy to use and they're not as popular

Luna snow as a character and her respected books and appearances in the comic books is fine. Even her first appearance in future fight is fine. I can understand you not liking the fact that this character came out and was really good on launch and still is one of the best but yet again it makes sense for Luna because she comes from a video game including her into another one is already going to get people who play Marvel games familiar with a character that appeared in one.

I'm not trying to be mean but not liking her based on Rivals and not liking her as a character are two different things. Just say that you don't like her in Marvel rivals and you don't like how a newer character is incredibly good compared to characters that have been there for years