Batman: White Knight stopped with a fist, i.e. Batman's methods. This led him to turn the Joker into a politician, using the character's intelligence and charisma to win the people of Gotham over. DC Comics had no problems with the ideas that Murphy had for the series such as changing the timeline in Batman's history. However, the adult content like nudity and profanity that Murphy had intended to include were not permitted. Murphy revealed that the Joker in "White Knight" has the real name Jack Napier, a callback to Tim Burton's 1989 "Batman" film where the Joker played by Jack Nicholson also shares
Batman: Return of the Caped Crusaders that his behavior change was used as a distraction by Joker, Penguin and Riddler, and that the ones they arrested were fake copies. Joker had spiked the Batnip Catwoman was using. The real ones were using the opportunity to rob the Gotham Art Museum. Joker, Penguin and Riddler just wanted to get Batman out of the way first. Batman, Robin, and Catwoman (who came as vengeance for what they did at the space station) chase them to Penguin's blimp, where the villainous trio is defeated after they are knocked off the blimp to a safe location to be arrested. Catwoman