The Brooklyn Assassin's Guild (B.A.G.) is a coalition of assassins based out of Brooklyn, New York City. When Harley Quinn first moved to Coney Island, she began sleepwalking and subconsciously used her computer to put a hit out on herself. She fought off several dangerous assassins looking to cash in on the bounty, not realizing that she was the one that hired them in the first place.
Once her head was clear, she learned from Big Tony that members of the guild were meeting down at Franco's Food-o-Rama. Harley, Big Tony and her friend Poison Ivy went to Franco's to call off all future hits. She told them that there was no bounty out on her, and that any attempt to kill her would result in nothing but a corpse. One hitman however, did not believe her story and tried to make good on the so-called non-existent contract. Big Tony shot him in the face with a pump-action shotgun.