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