"Are you ready for some more? Explore! Find my challenges. And when you fail to solve them and lie blubbering like an ignorant child on the floor, you will know that The Riddler... is better than you."
The Riddler, (Edward "E." Nigma, also spelled Nygma by some writers), is an enemy of Batman. Created by writer Bill Finger and artist Dick Sprang, he first appeared in Detective Comics #140 (December 1948). Known for his purple domino mask and green question mark-covered costume, either as a skintight catsuit or a business suit and bowler hat, the Riddler is obsessed with riddles, puzzles, and word games. He delights in forewarning police and Batman of his capers by sending them complex clues. Like most Batman villains, the Riddler has become a darker, more three-dimensional character in recent years. Whereas he was once portrayed as a playful but sane criminal trickster, he is now the victim of an intense obsessive compulsion. This was first introduced in the 1966 issue of Batman (titled, "The Riddle-less Robberies of the Riddler") in which he tried to refrain from leaving a riddle, but failed. This compulsion has been a recurring theme, albeit with a darker edge, as shown in a 1999 issue of Batman Gotham Adventures, in which he tried to commit a crime without leaving a riddle, but fails: "You don't understand. .. I really didn't want to leave you any clues. I really planned never to go back to Arkham Asylum. But I left you a clue anyway. So I... I have to go back there. Because I might need help. I... I might actually be crazy."