Tales from the Dark Multiverse: Dark Nights Metal #1

Synopsis

In the Dark Multiverse, the Justice League donned metal armor of Element X in their final battle with Barbatos, but were instead destroyed and re-made into monsters controlled by Barbatos. With Barbatos not stopped, he proceeded to destroy all the worlds in the Dark Multiverse except for the last, Earth 0. The Last Monitor Duke Thomas, who traveled from world to world to escape Barbatos, tries to rally the surviving heroes of Earth 0 to battle against the transformed Justice League and the Batman Who Laughs to save the last Earth.