Robin's appearance in Batman: Arkham City has been confirmed by Sarah Wellock, European community manager but what hasn't been confirmed is if he'll be in the single player story or if he's just an unlockable for the challenge maps.The rumor began when fans spotted Best Buy ads that stated that you could play as downloadable character Robin in two challenge maps when you preorder at Best Buy. The @arkhamcitynews Twitter later revealed that more information would be coming soon. Finally, Wellock confirmed that Robin will be playable in the "new and improved" challenge mode. But who knows, this doesn't rule out the possibility of a playable Robin during the single player.Source: ArkhamCity