Edward Nygma, also known as the Riddler, undoubtedly has the highest IQ of all Batman's foes. Cold, aloof, and possessed of a steely wit, the Riddler challenges Batman to a duel of wits by leaving a trail of riddles, puzzles and cryptograms. In fact, he is psychologically incapable of committing any crime without offering a clue as to how he can be caught. Unfortunately for the Riddler, he has met his match in Batman who's been able to decipher even his cleverest conundrums.
