The Penguin's Colin Farrell said even though we don't see it, Oz Cobb sported an anatomically correct prosthetic penis during his nude scene.

Farrell’s physicality matches his minutely calibrated vocal rasp as Oz. He’s not recognizable as Colin Farrell but in this world of deception and shadows, the casting works. And for all the low-light nightclub murmuring going on,

Colin Farrell got candid about his reaction on watching the Penguin's look for the first time at Matt Reeves' office for The Batman.