The Penguin showrunner debunks popular fan theory: "Well, I can say he's not the Scarecrow"
Eagle-eyed fans spotted some suspicious items in Julian Rush's office during The Penguin episode 4, with what looks to be a syringe glove and a mask on show. That led to speculation that the psychiatrist is actually Jonathan Crane, AKA The Scarecrow – a Batman villain who hasn't been seen in a live-action movie since the Christopher Nolan films.