Claim: Patrick Bateman is the narrator of the crime documentary American Psycho.
Evidence: Patrick Bateman is a fictional character , the villain protagonist and narrator of the novel American Psycho by Bret Easton Ellis , and its film adaptation.
American Psycho is a 2000 American black comedy horror film co-written and directed by Mary Harron , based on Bret Easton Ellis 's 1991 novel of the same name.