Patrick Bateman - The narrator and anti-hero protagonist of the novel.
Evelyn Richards - Bateman's girlfriend.
Timothy Price - Bateman's best friend and colleague. Later appears as a teenager in Ellis' novel The Informers .
Paul Owen - Bateman's colleague who is later murdered by Bateman.
Jean - Bateman's secretary, whom Bateman refers to as "Jean, my secretary who is in love with me".
Luis Carruthers - A closeted homosexual co-worker who is in love with Bateman, something that disgusts the latter.
Courtney Lawrence - Luis' girlfriend who is having an affair with Bateman.
Craig McDermott - Bateman's colleague, part of a social foursome alongside Bateman, Timothy Price and David Van Patten.
David Van Patten - Bateman's colleague, also part of Bateman's main social group.
Minor characters
"Christie"– A prostitute, employed and abused sexually on multiple occasions by Bateman before he eventually murders her. Bateman gives her this name; her real one is never revealed.
Elizabeth - A dinner date of Bateman's, drugged and coerced into having sex with "Christie" before being murdered.
Marcus Halberstam– Bateman's colleague; Paul Owen repeatedly mistakes Bateman for Marcus.
Donald Kimball– Private detective hired to investigate Paul Owen's disappearance.
Alison Poole– Sexually assaulted by Bateman; created by Ellis' friend Jay McInerney in his novel Story of My Life and based on McInerney's former girlfriend Rielle Hunter; reappears as a main character in Ellis's later novel Glamorama , where she is involved with the lead character, Victor Ward.
Sean Bateman– Younger brother of Patrick Bateman and also the lead character of The Rules of Attraction .
Paul Denton– Friend of Paul Owen, who also appears in The Rules of Attraction where he is possibly romantically involved with Patrick's brother Sean.
Christopher Armstrong– Bateman's colleague at Pierce&Pierce.
Bethany– An old girlfriend of Patrick's whom, after a date, he murders in a particularly heinous manner.
Stash– Evelyn's friend, is HIV positive.
Vanden– Evelyn's friend from the East Village who attends Camden College, the main setting of The Rules of Attraction .
Al - A homeless man whom Bateman blinds and disfigures with a knife.
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