By Day she is Olivia Marston, daughter of Cornelius Marston, a billionaire businessman with sketchy dealings. By night, she is Nightcat, a cat burglar and villainess who loves the thrill of the heist. She largely became a villain due to boredom. She is a great gymnast and a black belt in several martial arts as well as a good boxer. She also tends to act sultry for manipulative reasons. She has blond hair as Olivia Marston, but has a black hair wig when she’s Nightcat. 