Magdalene "Maggie" Kyle is the younger sister of Selina Kyle, and the daughter of Brian and Maria Kyle. Maggie is also a former nun who married the banker Simon Burton. After Burton was killed by Black Mask, Maggie became the insane vigilante known as Sister Zero.
Maggie Kyle was created by Mindy Newell and Joe Brozowski, first appearing in Catwoman #1 (1989).
Multiverse