Cristin Milioti plays Sofia Falcone, the daughter of deceased criminal overlord Carmine Falcone. When her world is rocked by a murder in the first episode, she sets out to get revenge. But there's another shadow hanging over Sofia – her fearsome reputation as the Hangman, a notorious serial killer, who has already served time in Arkham Asylum.

Cristin Milioti’s Sofia Falcone is the standout villain of Max’s The Penguin. But she started in Batman comics as a mafia enforcer and serial killer the Hangman.

Who is Cristin Milioti's character Sofia Falcone in The Penguin, and why do they call her The Hangman? Here's what you need to know about this terrifying Batman villain.