Batwoman (Kate Kane)

Katherine Rebecca 'Kate" Kane is a supporting character in the Batman franchise and the main protagonist of the Batwoman comics. She is the cousin of Bruce Wayne and Damian Wayne, the twin sister of Beth Kane and the cousin of Bette Kane who is the Vigilante Batwoman, and one of the protectors of Gotham City, using her wealth and resources for goodwill.  She is both Jewish and an out lesbian, and debuted in Detective Comics 52 Issue #7.   Batwoman (real name Kate Kane) is a supporting character in the Batman franchise. She is the maternal cousin of Bruce Wayne