The Mirror Shows Your True Self in Live-Action Films.
- In All of Me, Steve Martin's character sees Lily Tomlin's character, with whom he is Sharing a Body, any time he looks into a reflective surface.
- Beauty and the Beast (1946): The magic mirror shows, when Belle's sisters look into it, an ugly old lady and a monkey respectively. Furthermore, Belle's beautiful necklace turns into a hideous rope when in their hands, reflecting the ugliness of their hearts once again.
- Inverted in The Brothers Grimm—the main antagonist is the Mirror Queen, who has a bad case of Age Without Youth after being sequestered in a tower for the past few centuries. The Queen herself is lying in bed, practically mummified, but the mirror in the same room shows what she used to look like.
- Ghostbusters (1984):
- When Dana Barrett visits the Ghostbusters after encountering a demon in her apartment, they hook her up to a monitor which shows a color map of the outline of her facial features. Later in the film, a possessed Louis Tully is taken to the Ghostbusters and analyzed with the same device which now shows a color map of a demonic Terror Dog's face.
- Haunter: When Lisa possesses Olivia's body in the world of the living, the mirror shows her actual face, but only to herself and the audience.
- In Highway to Hell, Charlie realizes "Rachel" isn't herself when he sees the demon's reflection in a mirror.
- In Hot Tub Time Machine, when the men got into 1986, their reflections are replaced, except the youngest since he keeps flickering and glitching seeing how he was never born yet.
- Hypocrites is about a supernatural being called "The Naked Truth" (played by a nude actress) who shows the hypocrisies of the local townspeople with a Magic Mirror. A politician who campaigns on "honesty" is shown accepting bribes. A man and woman getting engaged are shown to be a cheater and a Gold Digger, respectively. The young people at the beach recoil in horror at the sight of the Naked Truth, but her mirror reveals them partying at the beach in skimpy (for 1915) bathing suits. The woman who followed the pastor up the mountain is revealed by the mirror to be in love with him.
- Inception:
- Within a dream, Eamesnote can copy other people's appearances. When he looked at himself in several mirrors, some reflections showed his true face, others reflected his disguise, and which mirrors did which changed (almost certainly deliberately) between cuts.
- Supposedly, when Ariadne did the double-mirror thing in her test dreams, only Cobb's reflection appeared.
- When Ariadne is setting up the double-mirror, both her reflection and Cobb's appear, but once the infinite reflection is set up, the scene is shot such that Ariadne's reflections beyond the first are hidden behind Cobb's (This is actually real, according to lucid dreamers. One of the distinguishing features of lucid dreams is that inside them, mirrors don't work 'correctly' (i.e., they don't reflect, or reflect something else, or are distorted)).
- In It: Chapter Two show that the Losers Club (excluding Eddie and Stan) look in the mirror and it is revealed that the younger versions of themselves were replaced.
- In Jason Goes to Hell: The Final Friday, Jason's true hockey-masked self shows in reflective surfaces when he is possessing someone else. Cue a Quizzical Tilt when he finds this out himself.
- In The Last Witch Hunter, when Chloe looks into mirrors the models at Danique's place are preparing themselves in, she notes that all the "supermodels" look like old crones.
- In The League of Extraordinary Gentlemen, Jekyll talks to Hyde, whom he alone can see looking back at him from a mirror.
- It later shows the inverse when Hyde saves the Nautilus; Jekyll congratulates Hyde from the mirror.
- Inverted in The Matrix Resurrections, since Neo's appearance within The Matrix has been altered to make it harder for the humans to find him. The film has him take his actual appearance, but one early scene has one of the mirrors briefly show how he looks to everyone else.
- In Samson vs. the Vampire Women, lady vampires actually cast reflections, but the mirror shows them as ancient crones with a bad skin condition.
- The Shining. Jack enters the haunted Room 237 to find a young woman bathing there. She steps out of the bathtub fully naked and kisses him, until Jack looks into the mirror and is horrified to find himself embracing an elderly, rotting, zombie-woman. Later when Jack realises the waiter he's talking to is the deceased previous caretaker, you can see Jack nervously glance in the direction of the mirror, but this trope doesn't happen again.
- Sleepwalkers: Despite having human forms, the cat creatures' true forms are shown if they're in view of a mirror.
- Source Code: The viewer see Coulter running around trying to save the day, the reflection in the window and presumably everyone on the train sees Sean Fentress.
- Supergirl (1984): During the party scene, Selena looks at her refection in Nigel's cigarette case and sees a Shadow Demon (which would appear physically later in the movie) alongside her own face. She asks Nigel what it is, to which he replies "Over-reaching ambition. Take heed."
- The Mighty Thor:
- Thor: Used at the very end of the film to show that Dr. Selvig is being controlled by Loki.
- In Thor: Love and Thunder, when the resurrected Love walks to Gorr's side, her mirror image in the lake is filled with stars and galaxies like Eternity, hinting at her newly empowered nature.
- Venom:
- Inverted in Venom (2018), where anyone infected by a Symbiote sees their monstrous self in the reflection. This is how Eddie (and subsequently, the audience) gets their first look at Venom in humanoid form.
- Venom: Let There Be Carnage carries this forward with Cletus Kassidy talking to his Symbiote while driving a car; Carnage's part in the conversation was shown in the rear-view mirror.
