Traditionally, movie killers, especially slashers and horror, have been men, starting with Norman Bates in Psycho. Even though Norman did a lot of his killing dressed like his mother, he was still a man in the clothes of his dead mother. The All-Boys Slasher Club, however, has had credible challenges from some truly frightening female killers.
Source：https://www.cbr.com/best-female-killers-in-movies/
