Justice League War is coming! The clip features Batman and Green Lantern meeting for the first time while simultaneously dealing with both a renegade parademon and the local police. Jason O’Mara (Terra Nova) and Justin Kirk (Weeds) provide the voices of Batman and Green Lantern, respectively. Justice League: War synopsis — When the powerful Darkseid and his massive, relentless forces invade Earth, a group of previously unaligned super heroes – misunderstood and, in some cases, hunted by the authorities – discover the only way to fend off the attack will be to work together as a cohesive unit. Batman, Superman,