Make no mistake: Joker: Folie à Deux is an atrociously grim and boring movie.

In developing the ‘Joker’ sequel, director Todd Phillips said the team “just found ourselves writing more and more music into it”

Let's get the elephant-in-clown-makeup in the room out of the way first: Arthur dies at the end of Joker: Folie a Deux, meaning a third movie following the titular clown is very unlikely, if not impossible (unless they decide to go full surreal dream sequence on his deathbed, or a similarly 'out there' premise).