Marvel fans are shocked and a little bit embarassed to learn who Elizabeth Olsen is related to. Fans of Marvel are only now learning that Elizabeth Olsen, the actress who plays one of the comic's most famous characters, Wanda Maximoff aka The Scarlet Witch, is connected to Hollywood's most famous twins. Yes, in case you didn't know, the Avengers actress is the younger sister of Mary-Kate and Ashley Olsen, the twin sisters who took over Hollywood in the early 2000s.