E. Nigma

E. Nigma is a patient at Arkham Asylum.

Biography
E. Nigma is incarcerated in cell number 344 at Arkham Asylum. When John Deegan opened all the cell doors in the asylum, Nigma tried to escape, until the Flash (Oliver Queen) returned all the patients to their respective cells.

Behind the scenes

 * In the DC comics, Edward Nygma is a master strategist who incorporates riddles into his crimes in Gotham City and is an adversary of Batman known as the "Riddler".