Harley Quinn is known throughout the world for her infatuation with the Joker and her willingness to do anything for him. She is also shown to be outgoing, bubbly and friendly. Harley has often been said to have a demented mind, but she is also very intelligent. Everyone, whether it be a little or a lot, has something in common with this villainess, but the question is, how much do you share with her? Take this quiz to find out!