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