Batman: Arkham Asylum - Riddles: Scarface (+playlist)
The Riddler (Edward Nigma) - Arkham Asylum
Arkham Asylum Riddle Challenge: Mad Hatter by irishimo
Batman Arkham Asylum... if you get the newer one and think you dont have to play this one... you SHOULD play it anyway! WORTH IT!
The Riddler Cane Batman Arkham Asylum Style Question by Montyfam6, $239.99
Batman Arkham Asylum Riddler Trophy Replica Cosplay Prop
The 28 hidden characters in Batman: Arkham Asylum
Google Image Result for http://static.gamesradar.com/images/mb/GamesRadar/us/Features/2009/08/Batman%2520AA%2520Riddler%2520Guide/ART/Finished/082809_arkhamriddler_obs01--article_image.jpg
Ed Nygma - Gotham
Mad Hatter by Carlos D'Anda - Batman Arkham Asylum. So creepy in the game. Glad they got Peter MacNicol to voice him, he's so underrated.