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