Injustice 2 Storyline ()

"Hn-hn ha-ha ha-ha..."
Storyline of The Joker
Though killed by Superman, The Joker continues to haunt the lives of all those touched by his madness. By destroying Metropolis, he set the events in motion which made enemies of Superman and Batman. If he were alive to see the chaos he’d created, he would surely be smiling.
The Joker killed Red Hood