Fan Casting The Patient in Heart Of The Batman

Mid-Credit Scene: We see an inside view of Arkham Asylum. In a cell with graffiti sprawled all over the walls, we see a young woman in a lab coat and glasses holding a clipboard, asking a horribly disfigured inmate about his past. The man leans over to her, and in a sinister voice, asks her... "Tell me, doctor. Have you ever had this one bad day?"