The trick of comics, as we all know by now, is to be perpetually arriving. The first volume of Mark Waid’s Justice League Unlimited saw the team battle a threat that was revealed in the end to be a disguised Legion of Doom; the We Are Yesterday crossover with World’s Finest then had Grodd emerge from the Legion as the biggest threat, defeated by stranding time-lost heroes in the present.

We come then to Justice League Unlimited Vol. 2: The Omega Act, in which Grodd’s presence finally puts the Doomsday Time Trapper in front of the League, such to begin to discuss Darkseid and his evil Legion of Super-Heroes. We might could have just started there, a la the Time Trapper’s appearance in Superman early in DC All In, but then it wouldn’t be the excitement of monthly comics, starting the story from as far back as possible and building cliffhanger upon cliffhanger.