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