The first character to be added to Injustice: Gods Among Us via DLC is Lobo - one of the most fanatically requested characters, according to Ed Boon. "One thing that surprised me was Lobo," Ed stated. "There's an insane fan-base that really want to see Lobo in the game."
Lobo will be available to purchase on May 8th in New Zealand, and is available as part of the game's season pass. Another three characters are expected to be released, but Warner Bros. have not yet revealed whether or not Lobo (or any other Injustice DLC) will be available on the Wii U version of the game (which itself was recently delayed at retail, but is available via the eShop.)