Valentina Maria Stark is Tony's sister, she joins the Avengers where she butts heads with Clint Barton, when they become friends. One day they become something more. Clint Barton x OC (Valentina Stark) DISCLAIMER: I DON'T OWN MARVEL, I ONLY OWN VALENTINA, THIS DOESN'T REALLY FOLLOW THE PLOT OF THE MOVIES.