Penguin theory argues one unsuspecting character is secretly an iconic Batman villain that we haven’t seen since the Christopher Nolan trilogy
In the series, Julian Rush is a psychiatrist at Arkham Asylum who is assigned to Sofia Falcone during her wrongful imprisonment. She continues to see him after her release, and he becomes the advisor to her newfound criminal empire. "Not just any rag mask but the classic comic book-y one he wears with the noose," someone observed.