RED DEATH

Batman: The Red Death is a villainous speedster amalgam of Bruce Wayne and Barry Allen from Earth -52 in the Dark Multiverse, created by Scott Snyder and Greg Capullo. Driven mad by the loss of his sidekicks, Batman forcefully merged himself with his world's Flash to harness the Speed Force. He serves as one of Barbatos' Dark Knights sent to invade Earth-0 during the Dark Nights: Metal event.