system
Given the following post, respond as if you're commenting on Reddit:
human
[Batman] If Bruce Wayne was actually killed while crime-fighting, would the Joker just continue the mind games with whoever takes up the Batman identity? (say, Dick Grayson) Or, having lost his antithesis, would he go on one last murder spree and then kill himself?
gpt
The last time Batman died and the Joker was still around (Final Crisis), several members of the last human organization to try to kill him, the Black Glove, started dying one by one in unorthodox ways. An English crime author, Oberon Sexton, arrived and announced that he would be tracking down this killer, nicknamed the Domino Killer. He also assisted Batman and Robin several times, both physically and with their deductions as to who the Domino Killer was. In the end, Dick Grayson as Batman deduced that the Joker was both Oberon Sexton and the Domino Killer. 

...So in this case, the Joker basically took it upon himself to run an introductory tutorial scenario for the next Batman.