Becky is a secondary antagonist in the Sin City story "The Big Fat Kill". In the film adaption she is portrayed by Alexis Bledel.
Becky is one of the Old Town girls and one of the younger girls. Wanting out of the business, Becky allies herself with Wallenquist, in return for money and her mother's safety. She sold out her friends after Miho murdered cop Jack Rafferty under Gail's orders.
Becky's fate differs between the film and graphic novel. In the novel, she is shot in the final battle and dies but in the film she survives and encounters the Colonel.