This story includes major plot details from the finale of HBO’s “The Penguin,” now streaming on Max. It was a dark night on set. At a Q&A following a screening of “The Penguin” finale at the Saban Media Center on Nov.

And yet, there was one kill — one final murder in The Penguin Series Finale, Episode 8 “A Great or Little Thing” — that seemed absolutely beyond the pale. A moment where Oswald Cobb completely shed himself of all vestiges of humanity and truly transformed into a Batman villain.