Norma Bates bust

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Norma Louise Bates (née Spool) is a fictional character in the novel Psycho by Robert Bloch and the Universal Studios Psycho franchise starring Anthony Perkins, Psycho, Psycho II, Psycho III, Psycho IV: The Beginning and the TV spin-off Bates Motel. She is not strictly a character in the novel by Bloch, and her presence is indicated only as a voice and a corpse in the Psycho films. She is not depicted as a character until the fourth film installment (Psycho IV) where she serves as the primary antagonist.