The series has assembled quite a supporting cast. The first announced was Cristin Milioti as Sofia Falcone, daughter of Carmine (and half-sister of Selina Kyle, though it’s unclear if that will factor into the series). Sofia will be vying against Oz to take control of her father’s criminal empire. It’s rumored her brother Alberto (in the comics suspected of being the “Holiday” serial killer) will also appear, played by Michael Zegen.
Crime boss Salvatore Maroni was mentioned throughout “The Batman” as the victim of a drug bust that set Falcone up to rule Gotham. Maroni will be rearing his head again in “The Penguin,” played by DC veteran Clancy Brown. It’s unclear if Maroni will side with Oz, the Falcones, or be in it for himself. It’s just as big a question mark if his appearances will be while he’s behind bars.
Other actors cast in “The Penguin” include Michael Kelly (“House of Cards”), Shohreh Aghdashloo (“The Expanse”), Deirdre O’Connell (“Law and Order”), Rhenzy Feliz (“Encanto”), Theo Rossi (“Sons of Anarchy”), James Madio (“Gilmore Girls”), and Scott Cohen (“Band of Brothers”).