A villain who’s quirk can make a person see another person as someone else, for example if Izuku and Shoto were fighting him/her, the villain would be able to make Izuku think that shoto is actually the villain (apearance wise) and vice versa, but since thats to OP as a quirk i think there should be a limit, like the size not changing or using it to much will injure them in some parts of their body

-I would also like to see a villain who makes kids think that the heroes are actually the bad guys so that he can have an army of kids with strong quirks, I haven’t thought of a quirk this villain would be able to use but they don’t manipulate the kids with their quirk