Sounds pretty scary to make a Yandere! Wonder Woman, Supergirl, anyone who's superhuman, someone that no one would be wise to cross. Of course, a superhuman Yandere sounds no more scary than any supervillain (Yanderes could be good or evil). Entertaining to have in fiction, scary in real life. Fictional characters can have their Yandere lovers, 'cause I don't want 'em! Haha.. ya know?