Joker's Gang is a large group of career criminals operating in Gotham City, led by the murderous Joker. The gang commits acts of extreme crime that almost always lead to large amounts of death and destruction, usually for the Joker's own amusement. Most, if not all, of them suffer from some form of mental illness; these are the kind of minds that the Joker attracts.
It's unknown how the Joker's gang came to be but is known the clownish madman upset the order established by the Falcones and Maronis and would begin to rise in Gotham City's underworld. Jonny Frost would join the gang sometime early on in the gang's creation and eventually become Joker's number one man in the syndicate. Presumably, the gang would topple all other villain's criminal empires, aiding Joker to become the city's top crime lord while having encounters with Batman.
Searching for Harley Quinn
In the present day, Joker is depressed his lover/partner is gone from his life for quite some time and has Frost look for her. By bribing some high-level officials, Frost learns that Quinn is being held in a maximum prison facility in the Louisiana swamps and informs his boss who uses his resources to find Harley and save his lover. Joker and his thugs travel across the country to get a prison official, Griggs, to help them in Joker's plan. They learn of Task Force X and the nano-bombs and later attack Van Criss Laboratories to force Van Criss, the inventor of the nano-bombs to help them save Harley.
When Harley is returned to her cell in Belle Reve after she helps Task Force X kill Enchantress and Incubus, with her little reward, Joker and another gang of thugs attack the prison, killing several guards and freeing her from her cell. Harley then embraces Joker, as they reunite together.
- Joker - Leader
- Panda Man - Henchman
- Crying Baby Man - Henchman
- Shark 1- Henchman
- Shark 2 - Henchman
- Sea Urchin - Henchman
- Batman Cosplayer - Henchman
- Muscle Man - Henchman
- Mr. Grin - Henchman
- Harley Quinn - Second-in-Command; kicked out of the gang after the Joker broke up with her
- Jonny Frost † - Lieutenant; deceased
- Eyeball † - Henchman; deceased
- Devil Goat † - Henchman; deceased
- One of the gang members is wearing a Batman mask.