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