Katherine Kyle the niece of Selina Kyle even though she lives with her aunt she is always getting in trouble because of her aunt. Though she has been arrested before she never got a criminal record but when Selina leaves Katherine in an alleyway by herself, she starts looking for help and ends up running into Bruce who decides to help her. Selina told Bruce that she would be back for Katherine, but days turned into weeks and weeks turned into months and months turned into years. Bruce then realized that Selina was never coming back for Katherine and decided to adopt Katherine.