Do you want to compare Duplicate Girl with Harley Quinn? Discover the powers, weakness & weapons of Duplicate Girl and Harley Quinn from Duplicate Girl Biography and Harley Quinn Biography. Find out all about Duplicate Girl and Harley Quinn.# Check out how is Duplicate Girl unique and distinct from Harley Quinn. Discover their love interest, sidekicks, family tree and the movies and games list in which Duplicate Girl and Harley Quinn have appeared. Find out everything about them here!