Joker's Gang

Joker's Gang is a group of thugs who work for the Joker as well as his henchwomen, Harley Quinn. People who associated with them was Victor Zsasz, Bane and Poison Ivy before she turned against the Clown Prince of Crime. They were ruthless criminals who feared and hated Batman; wanting him dead the second they catch sight of him. In both locations, they managed to control locations as well as get into the Armory. Scarecrow also possibly associated with this gang too. Frank Boles is a hired mercenary who worked for Joker until he was killed by him when he discovered Batman wasn't far behind.

When Batman confronts or encounters them, he will battle them and aggressively defeat them; temporarily stop them from breathing and breaking their bones. They sometimes wear make up to make them look like clowns as well as colorful outfits in Arkham City. In Arkham Asylum, some were killed by the Joker himself when Laughing Gas was released. During the events of Arkham City, the gang were enemies against gangs led by the Penguin and Two-Face, some thugs also worked for the Riddler and were interrogated by the Dark Knight for information about him.