Seven nightmarish versions of Batman from seven dying alternate realities have been recruited by the dark god Barbatos to terrorize the World's Greatest Heroes in our universe. They threaten life across the Multiverse, and the Justice League may be powerless to stop them! We introduce you to: The Batman Who Laughs: a lunatic driven mad by his world's Joker. The Red Death: a thief who stole his reality's Speed Force power. The Drowned: a female, amphibious Batman. The Dawnbreaker: a twisted Green Lantern. The Murder Machine: a deranged, deadly cyborg. The Merciless: a warrior who wears the helmet of Ares. The Devastator: a part-human, part-Doomsday monster. Provided by publisher.

Contains material originally published in 2017-2018 in single magazine form as Batman: The Red Death #1; Batman: The Murder Machine #1; Batman: The Dawnbreaker #1; Batman: The Drowned #1; Batman: The Merciless #1; Batman: The Devastator #1; Dark Knights: The Batman Who Laughs #1; Dark Knights Rising: The Wild Hunt #1. Batman created by Bob Kane with Bill Finger. Superman created by Jerry Siegel and Joe Shuster. Supergirl based on characters created by Jerry Siegel and Joe Shuster. Superboy created by Jerry Siegel, by special arrangement with the Jerry Siegel family.