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: The Man Who Laughs revealed that he was John Claridge, son of Henry Claridge, who Joker murders first in "The Man Who Laughs". When Batman believes he is going after the Mayor, it turns out that he poisoned the mayor's security instead, but instead of smiles they all wear mutilated frowns. When they finally face off at the reservoir, Batman makes a guess that the Joker is going to poison it, and then Joker goes on to detail what would have happened if it played out exactly like last time, but instead reveals that since the people closest to the reservoir would have been