GasJoker

GasJoker represented Gaslight Joker from Infinite Crisis, the Victorian-world Joker known as the Laughing Butcher. Before taking the Joker name, he lured victims beneath his Gotham butcher shop and fed them to hordes of rats. Fleeing Batman led him into a tannery vat of chemicals that bleached his skin and fixed his face into a grotesque grin.

`GasJoker` was also the shorthand contemporary players used for Gaslight Joker, so the Twitch command names that exact alternate version.

When this emote was active, viewers typed GasJoker in Twitch chat to use it. It directly referred to Infinite Crisis's Laughing Butcher version of the Joker, making butcher, rat and Gaslight Joker references specific to this identity.