Found inside Pinkney Orphanage, inside the final Riddler/Catwoman room. There's a console by the puzzle you can activate with the Remote Hacking Device. This opens up a small hidden room.

"Vengeance burns darkly inside the betrayed, as they stare at reminders of debts unpaid." Solved in Arkham Knight HQ South. Check the back corner, bottom floor of the western sector to find this ...

The Subway Station and its network of underground tunnels hide several more Riddler Trophies in Batman: Arkham City. It makes you wonder what lengths Nigma is willing to go just to leave behind ...

The Riddler is another one of Batman's iconic villains, who made his first appearance in Detective Comics #140 back in 1948). He was created by Bill Finger and Dick Sprang as Edward Nygma ...

The Riddler is back! After stumping Batman and players alike in the Arkham games, he's relocated to Metropolis and has set his sights on Task Force X. Suicide Squad: Kill the Justice League ...