Katherine (Kate) Kane, was born with a twin sister named Beth, and were born to colonel Jake Kane and Captain Gabi Kane. Both of the parents were on active military duty, and worked with intelligence organizations. As Kate’s parents were promoted, they were always on the move and never were able to settle down to one town.
Kate's mother planned on taking Kate and her twin sister, Beth out to an expensive restaurant for their 12th birthday. They never had much of that when they were younger. However, they were kidnapped on the way to the birthday. Kate's mother was murdered and her sister got caught in the crossfire and was *believed* dead as well.
Years later, Kate's father then eventually married billionaire weapons heiress Catherine Hamilton, which was then passed down to Kate and she is currently a billionaire. Which is the perfect cover up for a vigilante.
FUN FACT🌟Kate’s aunt is Martha Kane (Wayne) who is Bruce Wayne’s mother making Bruce (BATMAN) her cousin. -
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While Batwoman is not nearly as friendly as Flash or Supergirl, Kate Kane is the complete opposite. “She is more fun because she’s a billionaire, she has ladies that love her. I think, for the most part crossover-wise, she’s swaggy,” says Rose. “She always knew who she was, but she’s really coming into knowing who she is in the crossover, and with Batwoman as well. It’s not the first time she’s put on the suit.” Furthermore, Batwoman isn’t too pleased when the trinity arrives in Gotham City. “Kate does not want to deal with this. She has a whole other agenda, a whole other life that she’s trying to sort out right now, and these frigging superheroes come in and they’re a mess, and they need her help,” says Rose.
Overall, Batwoman’s inclusion in the crossover is mainly supposed to function as a tease for her potential solo series. Says Arrow showrunner Beth Schwartz: “There’s a lot of mystery to her, which I think will be intriguing, and people will want more after they watch, for sure.”