The Batman Who Laughs is a hybrid version of the Batman and The Joker from Earth -22. This twisted version of Batman was created when Nano-toxins from The Joker’s heart were released into Bruce Wayne’s bloodstream, causing the Dark Knight’s perfect mind to merge with the warped psyche of the Clown Prince of Crime. The Robins of Earth -22 were infected by the absolutely nightmarish Batman Who Laughs to become his own band of twisted Robins. Kept on a chain-link leash, these sinister sidekicks follow the evil Dark Knight’s bidding, fighting tooth and claw to take down any enemy.DC Multiverse Collector Multipack - Batman Who Laughs with Robins of Earth -22