Practily anyone who don't know how kpop works at times!!
but Ren thou gosh when I first saw him I had to make sure he was not a girl. I think watching to many dramas where a girl dresses up like a guy and others don't know. but anyway I think anyone would agree that he's one of the top kpop boys that would a look better then if a girl in kpop and him dressed up together!!