Selina Kyle is a secretary for tycoon Max Shreck. Hwoever, after Selina discovers a dark secret behind Shreck's power plant, he tries to kill her by pushing her out the window of his skyscraper. After being rescued by cats, Selina gains new powers and creates a leather costume in her apartment. Catwoman is born.
Selina ends up falling for Bruce as she ends up fighting Batman at Catwoman. She initially teams up with the Penguin until he makes an advance at her.  Gross.