I just learned that the Countess in Diablo II is based on Elizabeth Bathory, a real-life Countess in Hungary who lived from 1560 to 1614 . She is said to have bathed in the blood of girls in order to preserve her youth. She is often labelled as the most prolific serial killer in history and the female counterpart of Count Dracula. She is also known as the "Blood Countess", "Blood Queen" or "Countess Dracula". She was imprisoned in her own castle, much like her Tower in Diablo 2.