In a few days, Lobo will be the first DLC character available for Injustice: Gods Among Us. Confirmed by Warner Bros. Games today, the second DLC character will be Batgirl.
Warner Bros. Games made the announcement via Twitter and Facebook that Batgirl will be coming to the game and that a video of her in action will be shown next week. This surprise announcement could be due to an accidental reveal of Batgirl that happened yesterday when the character was available for download within the Downloadable Content menu of the game.
As the case with Lobo, expect to pay $5 for Batgirl when she officially becomes available for download.