A mysterious woman who is at least partially mechanical, Black Dahlia has risen through the ranks of the Medici Mafia's minions to become one of Lorenzo Medici's top enforcers. When she's not acting as his personal bodyguard, she's being sent on the most important and heinous missions for the Medicis. Beyond that, little is known about her, but she has worked for Lorenzo for at least fourteen years (likely more, since she appears to be highly-ranked even then). The mask she wears obscures her face in all known photographs.

Prior to her playable appearance in Skullgirls: 2nd Encore, Black Dahlia appeared in several character's story modes, including Peacock's and Squigly's.