Alexis Kaye was a disaffected college student, whose anger with the world she saw as falling apart around her made her the perfect acolyte for The Joker's™ nihilistic philosophy. She wanted to prove to her hero that she was not merely an obsessive fangirl, but a potential partner in crime. She created her own version of The Joker toxin and killed her college dean with it. The Joker, watching on from inside her wardrobe, was satisfied that Alexis- or Punchline, as she called herself-was up to the job of helping him in his next big plot against Batman. The Joker employs a variety of clown and circus-themed weaponry, ranging from razor-sharp playing cards to acid-squirting lapel flowers. He often sets up shop in deserted card factories or on dilapidated former circus grounds, keeping to his favorite themes.