Batman Who Laughs

The Batman Who Laughs is a version of Bruce Wayne from Earth -22 of the Dark Multiverse, a reality where killing the Joker exposed him to a toxin that rewired his mind to match the Joker's chaotic cruelty. He retains Batman's tactical genius and combat skills while adopting murderous ruthlessness, making him a uniquely dangerous threat. Created by Scott Snyder and Greg Capullo, he emerged as the leader of the Dark Knights assembled by the cosmic entity Barbatos.