All Batman fans know who Robin is; he's one of the most famous side-kicks in comic book history. The character was even given his own pre-order bonus DLC - "Robin Bundle Pack" - upon release of Batman: Arkham City (Xbox 360). That DLC has now been released onto the Xbox Marketplace today for everybody to be able to download. The DLC has two achievements worth a total of 50G.Download the fully playable Robin character. Robin comes complete with his own unique gadgets and special moves, and is playable in all challenge maps in the game, as well as two additional challenge maps that are included with the pack: Black Mask and Freight Train. The Freight Train Escape challenge map is a unique take on Arkham City, featuring brawler gameplay on a 2D plane. The pack also contains two bonus character skins: Red Robin and Animated Robin.Those of you wanting a sneak peek of the DLC before deciding on a purchase may want to check out the Robin gameplay trailer here.The "Robin Bundle Pack" costs 560 MSP and can be downloaded from here.