In James Tynion IV‘s Batman #99, Harley Quinn gives Batman something of an ultimatum. With the final showdown between Batman and the Joker at hand, she tells him that this battle between the old foes needs to end — and she doesn’t mean just the current one. Harley tells Batman that this ongoing war between them that has played out over years and years in Gotham finally needs to be over and there is only one ending that will work: the Joker has to die. As she says, it needs an ending and while one of the core values of Batman is that he does not kill, as we head into the final chapter of Joker War with this week’s Batman #100 it’s time to consider what feels like the unthinkable. It’s time for Batman to kill the Joker.