Katherine "Kate" Kane is the daughter of the renowned Col. Jacob Kane and Gabriella Kane, coming from one of the wealthiest families in Gotham, so much so that it's said that "The Kanes own everything the Waynes don't".
Born a twin, Kate was always described as a 'rebellious tomboy' and her sister Elizabeth (or Lissie, as the family referred to her) was always the 'bookish church-mouse'. Kate got into a lot of trouble in her youth, much to her father's chagrin, and featured prominently in many gossip rags as "The Anti-Heiress". Eventually, though, her father's disapproval began to wear her down, influencing her to join the Army.
Though the Army gave her a focus she had never had before, it also presented her with relentless hazing and bullying because of her sexual orientation. Also, during this time she received news from her father (who had been working for NATO) that her mother and sister had been abducted. Months later, she received news that her mother was dead and her sister was presumed so. The bullying escalated. When the hazing reached a boiling point, Kate was involved in a barracks brawl that ended up getting her discharged.
Back in Gotham, Kate met and completely fell in love with police officer Renee Montoya and the two began dating. Through her connections to various heroes, Renee eventually took up the mantle of The Question, patrolling the Gotham underground and working in congress with Oracle and the BatFam. A case concerning the Kanes brought Kate into the equation.
To discover the connection between the Kanes, Intergang, and the rising criminal mastermind Mad Alice, Kate adopts the identity of Batwoman and becomes an agent of the Oracle. Eventually, she crosses paths with Batman, and the two forge a kinship that adopted her into the BatFam.
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