Edward Nygma, also known as the Riddler, is a fictional supervillain appearing in American comic books published by DC Comics, primarily as an enemy of Batman. Renowned for his intelligence and obsession with riddles, puzzles, and word games, he enjoys incorporating them into his criminal schemes. His compulsive need to challenge Batman is driven by a desire to prove his intellectual superiority. The Riddler often leaves clues to his crimes, which makes him an intriguing adversary for the Dark Knight. His green costume, question-mark motif, and signature cane are iconic elements of his character.