The Riddler was a villain who terrorized Gotham City and an enemy of Batman's. Edward Nigma was fascinated with puzzles and riddles as a boy and become obsessed with them. He would then use this obsession to test his wits against the law and turn to crime, leaving behind a clue at the scene which Batman always manages to solve before apprehending him. Unlike the other Batman rogues, the Riddler commits crimes behind mind games and it takes Batman's intellect to solve them rather than physical force. The Riddler has a genius intellect in constructing riddles and is armed with his "?" cane that contains weapons and computer technology. He appears in 7787 The Bat-Tank: The Riddler and Bane's Hideout , 7785 Arkham Asylum, and Lego Batman: The Video Game . In the game his weapon is a "?" staff, which is a melee weapon and can mind-control certain targets. In the game he also leads a group containing Clayface, Poison Ivy, Two-Face and Mr. Freeze. In the video game he wants to steal the contents of the Gotham Gold Reserve. He is also friends with Two-Face.