It looks like the Dark Knight has a new adversary in TT Games' Lego Batman (PC, Xbox 360, PS3, PSP, Wii, DS). It was previously revealed that the Joker will be featured as one of the villains in the game, so it's no small surprise that his offbeat sidekick, Harley Quinn, will also be making an appearance.

Below, you'll see a couple of screenshots of Joker's villainous sidekick in action. It's also kind of amusing to see that Penguin and Killer Croc got a stolen cameo shot in one of the screenshots as well.

If you want to find out a little bit more about Harley, here's an excerpt from Warner Brothers' statement released to MTV Multiplayer regarding the deranged yet adorable sidekick:

In the “LEGO Batman” video game, Harley Quinn will have the ability to walk a tight rope, perform super jumps and bypass security for all levels with guards in security booths. Harley Quinn appears in the Fairgrounds Villain level as well as one additional level yet to be announced… stay tuned.