Edward Nygma a.k.a The Riddler is a major antagonist of the TV Series Gotham. In the Heroes Rise arc, Nygma ultimately adopts his alter-ego, the Riddler, the future nemesis of Batman, and becomes a supporting antagonist.
He is portrayed by Cory Michael Smith.
In the first season, he is a supporting character and works as a police forensics investigator for the Gotham City Police Department, who normally gives Harvey Bullock and James Gordon results of crime scenes. He is also shown for having a love for puzzles, and despite lacking empathy does not act as a villain for a majority of the first season. A subplot involving Edward shows his interest in colleague Kristen Kringle. His start of darkness occurs when he murders her abusive boyfriend Tom Dougherty, which shows him having a breakdown and in the last episode of season 1, having an argument with himself.
In season 2, Edward begins his journey to villainy when he is shown to have developed a split personality/schizophrenia and accidentally kills Kristen when confessing that he murdered Tom. His darker side soon takes over when Edward soon realizes he takes pleasure in getting off with his crimes. Edward further develops into one of the antagonists as he begins plotting against Jim Gordon, who he wrongfully believes is suspecting him of Kringle's disappearance. Although Nygma manages to frame Gordon for a murder Nygma committed, Gordon is able to clear his name. Nygma is imprisoned in Arkham Asylum but Penguin, now planning to become mayor of Gotham, arranges him to be declared sane.
Nygma is released from Arkham and helps Penguin to achieve his goal and is named Penguin's Chief of Staff. However, when Penguin orders a hit on Nygma's girlfriend Isabella out of jealousy, Nygma - with Barbara Kean, Tabitha Galavan and Butch Gilzean - declares war on Penguin's empire, devoted to bringing it to shambles. When Nygma seemingly kills Penguin by shooting him pushing him into Gotham Harbor, Nygma accepts his role as the Riddler and terrorizes Gotham City.