One of the Dark Knight's most infamous villains, Edward Nygma enjoys flaunting his intellectual superiority by conducting crimes and leaving clues for Batman to piece together. While this habit constantly leads to the aptly named Riddler failing in his criminal endeavors, his puzzle-problem actually stems not only from his own narcissism and ego, but also from a deep-seeded psychological compulsion. Because of this, the Riddler often finds himself a resident of Arkham Asylum following his inevitable capture.