Laughing Gas
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Real Identity: Not Applicable
Appearances (Movies): Batman: Return of the Caped Crusaders
Powers/Skills: Hysteria
Voiced By: Not Applicable
The Joker's Laughing Gas is a toxin that sends people into fits of uncontrollable laughter if inhaled. He often emits it as a gas from the flower on his lapel. The Joker secertly spiked Catwoman's brainwashing Batnip with Laughing Gas to make it more potent in order to turn Batman into an evil egomaniac. He would serve as a distraction and allow them to go on a crime spree targeting Gotham's most priceless treasures and irreplaceable artwork.