Injustice: Gods Among Us has a trailer showing off Martian Manhunter’s moves. He’s the next round of DLC to release starting today. While the trailer isn’t all that new, it should give you a refresher course and help you decide whether to download the new content. The John Stewart skin for Green Lantern is also expected today. Look for the content to hit the US PS Store later this evening, and tomorrow on Xbox Live and PSN in the UK.