Hypothetically, let say the Joker repented and permanently became a hero. Would the forces of chaos drive Batman to become a badguy?
>>94037749
Actually an upcoming elseworld White Knight is that premise exactly. You can find out there far better than random fuckers here likely.
>>94037925
Oh and to address your question from the preview of the plot, yes in the story of Joker repenting Batman is the villain of the story.