->'''Played By''': Anthony Perkins
* CartwrightCurse: [[spoiler: Connie (from ''Psycho IV'') is the only one of Norman's love interests to escape a tragic fate.]]
* ExtremeDoormat: To his mother, who deliberately made him dependent upon her after his father's death.
* FreudianExcuse: The abuse he was subject to by his mother when he was young.
* KubrickStare: Look to the right. It ''cannot'' be missed.
* NiceGuy: When Mommy doesn't take over...
* OedipusComplex: Norman's mother deliberately isolated her five-year-old son from the outside world and made him utterly dependent on her after Mr Bates' death. Naturally enough, the twelve-year-old, completely co-dependent Norman then reacted rather badly to her remarriage.
* ReluctantPsycho: In ''Psycho II'', ''Psycho III'' and ''Psycho IV''.
* SplitPersonality: Norman and his internalized mother.
* TaxidermyIsCreepy: That his mother is actually just a preserved and stuffed corpse is the great twist of the film.
->'''Played By''': Janet Leigh (in ''Psycho'')
!!'''Lila Loomis, née Crane'''
->'''Played By''': Vera Miles (in ''Psycho'' and ''Psycho II'')
* BestServedCold: In ''Psycho II''.
* [[spoiler: CruelAndUnusualDeath: Impaled through the mouth with a kitchen knife in ''Psycho II''.]]
* RevengeBeforeReason: ''In Psycho II''.
* RelationshipUpgrade: She married Sam Loomis between ''Psycho'' and ''Psycho II''.
* TautologicalTemplar: In ''Psycho II''.
* TookALevelInJerkass: In ''Psycho II''.
* WidowWoman: In ''Psycho II''.
!!'''Norma Bates, [[spoiler: née Spool]]'''
[[caption-width-right:252:[[labelnote:Click here to see]]http://static.tvtropes.org/pmwiki/pub/images/psycho-645_7772.jpg[[/labelnote]][[spoiler: her corpse]]]]
->'''Played By''': Olivia Hussey (in ''Psycho IV'')
* EvilMatriarch: [[spoiler: Though ''Psycho IV downplays this.]]
* HotMom: In ''Psycho IV''.
* ManipulativeBitch: [[spoiler: Even beyond the grave she continues to torment Norman.]]
* [[spoiler: MummiesAtTheDinnerTable: In ''Psycho''.]]
* [[spoiler: PeekABooCorpse: In ''Psycho''.]]
* TheUnseen: She's never seen [[spoiler: until the end of ''Psycho''. But she is often heard either by Norman or anyone not near the two in the first movie.]]
!!'''Mary Samuels [[spoiler: (real name Loomis)]]'''
->'''Played By''': Meg Tilly (in ''Psycho II'')
* DeadPersonImpersonation: [[spoiler: Impersonates Norman's mother with a robe, a wig and the kitchen knife in hope of stopping him from going insane again. It doesn't end well for her.]]
* [[spoiler: HeelFaceTurn: She grows genuinely convinced of Norman's newfound sanity and at some point doesn't want to help her mother make him insane anymore.]]
* [[spoiler: KillTheCutie: She is shot dead by the police after an unlucky and tragic chain of reactions.]]
* [[spoiler: KilledOffForReal]]
* [[NiceGuy Nice Girl]]
->'''Played by''': Diana Scarwid (in ''Psycho III'')
* [[spoiler: KillTheCutie: By accident. Or was it Mother's spirit?]]
* [[spoiler: KilledOffForReal]]
->'''Played by''': Claudia Bryar (in ''Psycho II'')
* [[spoiler: AssholeVictim: Norman kills her with a ShovelStrike at the end of ''Psycho II''.]]
* [[spoiler: EvilOldFolks]]
* [[spoiler: InsaneEqualsViolent]]
* [[spoiler: KarmaHoudiniWarranty]]
* [[spoiler: KarmicDeath]]
* [[spoiler: KnifeNut: She is the knife-wielding murderer in ''Psycho II''.]]
* [[spoiler: MummiesAtTheDinnerTable: "Replaces" Norman's mother at the end of ''Psycho II'' and in ''Psycho III''. Norman stuffs her body at the beginning of ''Psycho III''.]]
* ParentalSubstitute: Sort of. [[spoiler: In the most horrible way imaginable actually. She "replaces" Norman's mother as a mummy Norman talks to.]]
* TheReveal: [[spoiler: She is Norma's sister.]]