Here. Psychiatrist Harley Quinn is to be included in Lego Batman, as you can see from the screens. According to the press release:
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.
Batman (obviously), Robin and the Joker will also appear in the Traveller's Tales game, currently slated for every format under the sun in Q3.