Batman: Arkham City is getting more characters, skins, and goodies from various retailers than you can shake a Bat-pole at. But as is the trend recently, it seems you'll need to buy the game new or access a VIP pass to access some of the game features. In Batman's case, it's the femme fatale Catwoman.

Eurogamer reports that early video streams of the game in action reference the VIP pass, included in all new copies of the game. "Catwoman is a unique character with her own story, moves, and weapons," the game reads. "Unlock Catwoman by redeeming the 1st purchaser included in the game case or by visiting Xbox Live Marketplace."

Warner Bros Interactive Entertainment confirmed to the online pass to Eurogamer, saying that purchasers of used copies can pick up the VIP pass for 800 MSP. This converts to 7.99 in British pounds, but $9.99 US dollars. "Playing as Catwoman is not required to complete the game."

Catwoman's content includes four campaign story scenes starring the lithe cat burglar, and she's a playable character in the Challenge maps. Reports indicate that the VIP pass unlocks both pieces of content. It's also worth noting that these are probably the pieces of Catwoman DLC spotted last month on a GameStop page. Shacknews has contacted WB to clarify.

In short, if you're a fan of tight black leather and coy "kitty" puns, buy the game new to be on the safe side.