History Main / RedEyesTakeWarning

* Rudy the Baryonyx from ''WesternAnimation/IceAge3DawnOfTheDinosaurs'', although this is more from albinism.

* Zigzagged in ''Toys/{{Bionicle}}''. As a general rule, the color of the eyes can be used as an indication for "good or evil", but you have to ask yourself how the eyes fit with the armor.

** The evil Roodaka from the same movie had blue eyes as a standard, but when she got really angry, they turned bright orange/red.
** And naturally, the original BigBad, Makuta Teridax, also had his trademark red eyes (which he liked to project into shadowy corners), (though in his original set form he had blue eyes with red sclerae),as did many of his brethren, as well as some other villains in the toyline (Krekka, Sidorak, Piraka, Keelerak spiders, etc.). Some, however, eventually substituted orange for red, when the eye colors became ColourCodedForYourConvenience. Generally speaking, though, the eye colors of the Bionicle characters were all over the place, especially in the earlier years.
** When Teridax [[spoiler: [[HijackingCthulhu hijacks Mata Nui's body]], his eyes go from yellow to red]].

Not to be confused with the film ''Film/RedEye'' or the liquor, or with late-night airline flights. Sometimes a part of BurningWithAnger, and thus a harbinger of wrath from the SevenDeadlySins wrath.

* ''Fanfic/TheNightUnfurls'': AntiHero Kyril's eyes are as red as spilled blood, fitting for one who has mastered the art of hunting. Far from the only reason why he is TheDreaded TerrorHero that instils fear into the hearts of many.
* ''Webcomic/RescuingDara'' [[AvertedTrope averts]] this trope, with the hero Chivai and both the heroic and villainous Lucarios all having red eyes.

* In ''[[Animation/MissionIncredibleAdventuresOnTheDragonsTrail Pleasant Goat and Big Big Wolf - Mission Incredible: Adventures on the Dragon's Trail]], when a certain character is about to snap the Dragon Den's key into pieces, his eyes turn red.

* Rudy the Baryonyx from ''WesternAnimation/IceAge 3'', although this is more from albinism.

** Season 2 introduces Fang as the main cast's relatively new classmate, who has red eyes and glasses which appear to have a red glowing tint in the dark. He's aloof, arrogant and has a power band like each of the main characters, and the one who provides such power sources, Ochobot, faints at the sight of him. This makes the heroes wary of him, and it doesn't help that Fang sees [=BoBoiBoy=] as an obstacle to his quest for popularity, which has lead him to team up with the heroes' enemies at times. It's {{subverted}} later on, however, as he eventually befriends the heroes and proves to be well-meaning.

** Season 2 introduces Fang, a red-eyed boy who's a new student in the main cast's class. He's aloof, arrogant and has a power band like each of the main characters, and the one who provides such power sources, Ochobot, faints at the mere look of his face. This makes the heroes wary of him, and it doesn't help that Fang sees [=BoBoiBoy=] as an obstacle to his quest for popularity, which has lead him to team up with the heroes' enemies at times. It's {{subverted}} later on, however, as he eventually befriends the heroes and ultimately proves to be well-meaning.

* ''Fanfic/GuysBeingDudes'': As in the source material, Team GO Rocket's Shadow Pokemon have these. Arlo also does. It's ambiguous why, but it's implied it may have been due to exposure to corrupted XM while creating the Shadow Pokemon.

* ''WesternAnimation/PussInBootsTheLastWish'' features The Wolf with piercing red eyes. They stand out with his black sclera. Certain angles and lighting make them bigger and deeper. [[spoiler:He is after all, Death.]]
* ''WesternAnimation/MyLittlePonyEquestriaGirlsRainbowRocks'': The Dazzlings get completely red eyes in their [[OneWingedAngel anthro-siren forms]].
* The Fabrication Machine and all its robot minions in ''WesternAnimation/{{Nine}}''.

* In ''WesternAnimation/CareBearsMovieIIANewGeneration'', [[BigBad Dark Heart]] is ColourCodedForYourConvenience with red eyes, EvilRedhead hair, and clothes in his human form. When his eyes change color, it clues everyone in that [[spoiler:his HeelFaceTurn let him BecomeARealBoy]].
* [[https://vignette.wikia.nocookie.net/villains/images/8/89/Darla_Dimple_rising_to_power.png/revision/latest/scale-to-width-down/640?cb=20140323185742 Darla Dimple]] in ''WesternAnimation/CatsDontDance'' has eyes that flash red when she's feeling particularly insane.

* The PNK sorority girls in ''WesternAnimation/MonstersUniversity''. They're usually bubbly valley girl types, but when they get down to scaring, ''yikes''.
* Spoofed in ''WesternAnimation/MonstersVsAliens''. After being imprisoned by the military merely for being a [[AttackOfThe50FootWhatever 49-foot, 11-inch monster woman]], Susan starts banging on the walls of her prison. The other monsters warn her not to do that, whereupon a huge door opens to reveal a dark interior with two [[GlowingEyesOfDoom glowing red eyes]] within...which merely turn out to be the lights on General Monger's JetPack.

* ''WesternAnimation/{{Trolls}}'': [[EvilChef Chef]] has red eyes, and is the villain of the movie.

* Music/TheSweet's "Ballroom Blitz" mentions this about the man in the back. "As a matter of fact, his eyes are as red as the sun." He's responsible for it turning into the titular ballroom blitz.

* In ''Pinball/{{Krull}},'' [[BigBad The Beast's]] red glowing eyes can be seen o both the backglass and the lower-level playfield.
* ''Pinball/AvengersInfinityQuest'': Getting a tilt warning displays an image of ComicBook/{{Thanos}} with glowing red eyes, tying into his role as the game's BigBad while also visually dissuading the player from playing rough with the machine.

* Solidly averted in ''VisualNovel/KatawaShoujo'' with Akira Satou, Lilly's easygoing CoolBigSis. Well, there ''is'' the fact that she's quite happy to [[FelonyMisdemeanor supply Hisao, Lilly and Hanako, who are minors, with alcohol.]]

* In ''VisualNovel/CodeRealize'', glowing red eyes are a sign that the person in question is under the influence of Hidden Strength, a process which uses physical and emotional torture to unlock [[PowerBornOfMadness greatly enhanced physical abilities]] and leave them BrainwashedAndCrazy.
* The vampires in ''VisualNovel/ShallWeDateBloodInRoses'' have this happen to them when they're about to drink a person's blood. If the vampire has made someone their belonging, their eyes will also turn red when they command the belonging to do something.
* Wilhelm from ''VisualNovel/DiesIrae'' is perhaps one of the most depraved villains in the story, and being an albino, he has bright red eyes. And the more and more he get's into a fight, the more his eyes start to glow and and take on BlackEyesOfCrazy on top of it. This is especially noticeable when compared with the other albino of the cast, Claudia, who have golden eyes instead and is kindhearted to a fault.
* The key art for ''VisualNovel/SpiritHunterNG'' features the protagonist with a single, glowing red eye. This shows up once in the game; in the Bad End [[spoiler:where he's been transformed into a bloodthirsty monster]].

* ''WebAnimation/DSBTInsaniT'': To show that [[EvilDoppelganger ???]] is evil, its the only thing that seperates him from Koden. Killdra even thinks he's just Koden high on drugs at first.

* In Daria Cohens WebAnimation/TheVampair Series not only do the vampires have glowing red eyes but so does the evil magic cane.

* ''WebAnimation/HazbinHotel'':
** Alastor the Radio Demon has bright red irises against blood red sclera, and they glow red when he goes into his GameFace. He's also one of the most powerful and notoriously evil demons in Hell.
** Cherri Bomb has one large red cyclops eye and is a violent psychopathic anarchist.
** Charlie's GameFace comes complete with hellish red eyes, a sign that no matter how sweet and perky she is, she's still the ''princess of Hell''.
* ''WebAnimation/{{Glitchtale}}'': [[spoiler: After Asriel's SOUL is eaten by Kumu, Frisk is enraged to the point where their Level of Violence is immediately increased to 19, causing their eyes to open. Their eyes are glowing red as a result of their intense DETERMINATION]].
* On the website Scratch, user WebAnimation/Qem95 does this on his "Thank you for 300 projects!" animation in order to make the [[ScreamerPrank screamer he pulls off on the viewer]] scarier.
* ''WebAnimation/TheMostEpicStoryEverToldInAllOfHumanHistory'': Ridiculously Epic, Epic Robot Guy, and Ridiculously Epic Fail all have red eyes and appear to be evil. Ridiculously Epic is [[MoralEventHorizon outright confirmed to be evil]] when he [[DetonationMoon destroys the moon]] and [[StarKilling the sun]] at the end of the trailer.
* The title character of ''WebAnimation/FatherTucker'' had his eyes turn red whenever he got angry, which was usually when he threatened the children he molested into keeping quiet about his actions by claiming they'd go to Hell if they squealed on him.

* In ''Literature/VoidDomain'', Arachne has eight of these.

* The superhero guide ''Blog/HowToHero'' lists red eyes as a surefire indicator that someone is an evil clone.

* [[spoiler:Oswald Sherzikien]]'s eyes turn red when he [[spoiler: [[OneWingedAngel becomes a gigantic cartoon monster]]]] near the end of ''[[WebVideo/TheCartoonMan Journey of the Cartoon Man]]''
* In Heat vs Repulsion video, when heat was pissed off. Cue [[ThemeMusicPowerUp epic music]]. Watch it [[https://www.youtube.com/watch?v=ekz-FY_MDGA here]]
* ''WebVideo/{{Dad}}'': In "Dad Loves Mom", it's mentioned that when Mom is upset, "her eyes glow red"; [[spoiler: with the implication that the family aren't even human, it's likely this isn't just figurative.]]

* ''WebVideo/SevenSecondRiddles'': A [[ThingsThatGoBumpInTheNight monster under a kid's bed]] is shown with bright red eyes, while holding a knife, and smiling evilly.

** When [[ShockAndAwe BoBoiBoy Lightning]] is brought to his RageBreakingPoint, he unlocks his NextTierPowerUp - [=BoBoiBoy=] Thunderstorm, who casts a sudden red-eyed glare upon the villains when he's brought out. Thunderstorm is easily one of [=BoBoiBoy=]'s most fearsome forms, with his sheer speed, power and ruthlessness.
** Season 2 introduces Fang, a red-eyed boy who's a new student in the main cast's class. He's aloof, arrogant and has a power band like each of the main cast, and the one who provides such power sources, Ochobot, faints at the mere look of his face. This makes the main cast become wary of him, and it doesn't help that Fang sees [=BoBoiBoy=] as an obstacle to his quest for popularity, which has lead him to team up with the heroes' enemies at times. It's {{subverted}} later on, however, as he eventually befriends the heroes and ultimately proves to be well-meaning.

* Music/DavidBowie's "Film/CatPeople (Putting Out Fire)", written for the 1982 film, has a lovelorn man singing to an object of desire, warning her of the intensity of his need. The first verse establishes that his eyes are usually green, but they become red in the second verse:

* ''[https://www.fanfiction.net/s/10340015/1/The-Body-of-the-War-Feeder The Body of the War-Feeder]]'' In this ''Series/DoctorWho'' fanfiction, the titular War-Feeder has red eyes. This also happens to the bodies he possesses.

** Gravemoss has these as a standard, and is one of the vilest characters in the setting.

** Doctor Sinister, a member of NamesToRunAwayFromReallyFast, has red eyes to go along with being an albino.

* ''Wiki/SCPFoundation'':

[[folder:Webcomics]]
* In ''Webcomic/{{Adventurers}}'', Khrima has solid red eyes. It's an impressive feat of comic-villainy that this makes him look more silly than intimidating.
* Hartwig from ''Webcomic/AshfacesDaughter'' has his eyes turn completely red whenever his true berserker curse activates.
* In ''Webcomic/{{Archipelago}}'', when someone [[DealWithTheDevil enters the service of the Great Raven,]] their left eye becomes black with a red pupil.
* In ''Webcomic/AverageJoe'', Fatale's eyes go from white, to glowing red behind her mask when angered. [[http://ajcomic.com/?p=152 This]] [[http://ajcomic.com/?p=470 happens]] [[http://ajcomic.com/?p=665 a lot]].
* ''Webcomic/BobAndGeorge'': Helmeted Author has red eyes. This is one of the two things that make him different from [[AuthorAvatar the real Author]] - [[ExactlyWhatItSaysOnTheTin the other one is the obvious]].
* Webcomic/TheBongcheonDongGhost has red eyes, but by the time you see them, it's already very obvious...and too late.
* Early on in ''Webcomic/ChasingTheSunset'', whenever Leaf's eyes go red, it means he's about to unleash the Furies. Not sure if it persists later.
* In ''Webcomic/ComicShorts'', Leko the Robot's normally green eyes turn red when he gets very angry.
* Combined with HellishPupils in ''Webcomic/CommanderKitty'', when [[BigBad Zenith]] [[http://www.commanderkitty.com/2010/07/25/whose-side-are-you-on/ ends up running into Nin Wah again]]. [[spoiler: Inverted after she breaks down and is turned back on sans personality, [[http://www.commanderkitty.com/2012/10/27/not-making-it-easy/ where her red pupils instead seem to signify her being at her most docile and obedient]].]]
* Played for laughs in ''Webcomic/CtrlAltDel'', usually, one example being when Buckley got ''VideoGame/StreetFighterIV'' and grew increasingly frustrated over [[TheComputerIsACheatingBastard the computer AI being cheap]].
-->'''Buckley''': God ''damn it, c.viper''! I swear I am going to [[CutHisHeartOutWithASpoon face-fuck you with a dump truck]]!
* ''Webcomic/CursedPrincessClub'':
** Humorously subverted when Gwendolyn and her arranged fiancé Frederick [[https://www.webtoons.com/en/comedy/cursed-princess-club/ep-25-confrontation/viewer?title_no=1537&episode_no=25 meet a second time]]. Gwen already has a FaceOfAThug that had previously made Frederick resistant to marrying her. And right before this second meeting, he thought he had just killed Gwen by accident[[labelnote:note]]It was actually cursed princess Monika. She was wearing a dress of Gwen's that she stole, and when Frederick saw her from behind he thought it was Gwen. Also, Monika turned into a crow out of Frederick's sight after she fell off the cliff, so she didn't die either.[[/labelnote]] Gwendolyn had earlier heard Syrah give a hypothetical speech for her to use with Frederick to try and reconcile with him. As she tries to remember what exactly Syrah said, she's also TryingNotToCry because she's unused to being so confrontational; the strain of this leaves her eyes increasingly bloodshot, making it look like she has a furious, red-eyed DeathGlare. Combined with her misremembering the lines in a way that sounds like she's unkillable and vengeful against Frederick, this leaves him utterly terrified.
** Played straight with King Leland of the Plaid Kingdom, who has naturally red irises and is very strict with his sons to the point of occasionally being downright [[AbusiveParents abusive]] (especially with [[TheUnFavourite Frederick]]), on top of having a rather Machiavellian approach to ruling in general.
* ''Webcomic/DanAndMabsFurryAdventures'': Aaryanna, Aniz, Dark Pegasus, Kria, and Regina all have red eyes, and are all pretty evil to varying degrees ({{Villainy Discretion Shot}}s notwithstanding).
* The "tainted" or Ver'drowendar from ''Webcomic/{{Drowtales}}'' have red irises; they "have been seeded by a demonic entity". All drow naturally have red pupils, but this is the result of [[http://en.wikipedia.org/wiki/Tapetum_lucidum eyeshine]] and is an evolutionary adaptation to living underground, but results in tainted characters having red on red eyes.
* In ''Webcomic/ElGoonishShive'', the first time Grace is seen to shapeshift [[http://www.egscomics.com/?date=2002-03-10 her eyes go red during the transformation]]. This was dropped during all subsequent transformations.
* In ''Webcomic/{{Endstone}}'', rocking the [[ArtifactOfDoom Banestone]] [[http://endstone.net/2011/06/23/6-04/ gives Jon red eyes.]]
* Parson from ''Webcomic/{{Erfworld}}'' gains red eyes after completing his sword, in a panel that makes him look genuinely frightening for the first time in the series.
* Played with in the ''Webcomic/{{Erstwhile}}'' adaption of "Sweetheart Roland", where red indicates MindControlEyes.
* ''Webcomic/FakeNewsRumble'' subverts this, as Stephen has red eyes (because of [[spoiler:the phoenix'power]]), and [[SubvertedTrope he's one of the protagonists]] [[spoiler:[[MindRape as]] [[DemonicPossession long]] [[FaceMonsterTurn as his]] [[BrainwashedAndCrazy eyes]] [[GlowingEyesofDoom stay]] [[MindControlEyes red]]]], that is.
* ''Webcomic/TheFoxSister'': The [[AsianFoxSpirit Kumiho]] loves this one.
* In ''Webcomic/{{Freefall}}'', [[http://freefall.purrsia.com/ff1400/fc01335.htm a vengeance-minded robot has glowing red eyes for a moment.]]
* ''Website/GaiaOnline'':
** Johnny K. Gambino.
** And, ironically, his opposite number, Vladimir Von Helson, via heterochromias (one gray as is standard for [[OurVampiresAreDifferent Gaian vampires]], one red apparently just for the sake of this trope).
* ''Webcomic/GirlGenius'': while subtle, it is seen well [[http://www.girlgeniusonline.com/comic.php?date=20120102 in this strip]] that Mama Gkika has red eyes. Possibly other Jägers, too.
* Inverted in ''Webcomic/TheGlassScientists'', as it's the calm Jekyll who has red eyes, while more dangerous Hyde's are green.
* Marceline from ''Webcomic/GodMode'' is described as a "[[http://godmodeonline.com/d/20051205.html sado-masochistic chain-smoking woman]]". Which is more or less true.
* ''Webcomic/{{Godslave}}'':
** Anpu's eyes start glowing red just before he delivers an impressive LightEmUp flashbang to Turner.
** Edith's eyes start to glow red whenever she uses her powers extensively.
* ''Webcomic/GunnerkriggCourt'':
** The yellow salamander/lizard-thing. It may not have been evil, per se, but it was certainly dangerous. [[spoiler: The lizard was a house fire that killed a small child and his family.]]
** Zimmy plays an odd variation of the trope. Normally she seems to have BlackEyesOfEvil, but when she is temporarily purified from the etheric miasma that pollutes her spirit by natural rain, it turns out that [[http://www.gunnerkrigg.com/?p=196 her eyes are bright crimson underneath]]. In this condition she is a lot more coherent and amiable than her usual self, but acts as a reminder that she's not exactly normal, either way.
** Hetty has red eyes and is as evil as they imply, as seen from her suggestion that Reynardine kill Antimony and her IrrationalHatred toward Adam.
** The Court robots generally have green eyes, but they'll turn yellow when the robot is alarmed by something and red when they have detected certain kinds of threats. Although they're never evil, when in red-eye mode they do not respond to normal commands and will use violent force against the perceived danger without further warning.
* All the vampires in ''Webcomic/HannaIsNotABoysName'' have red or reddish eyes, although some are more evil than others and the least evil of the four we've seen so far isn't drawn with visible irises at all.
* Panim, the MisanthropeSupreme from ''Webcomic/HelloWorld''.
* ''Webcomic/{{Homestuck}}'' has Calliborn, having candy-red eyes and red swirls on his cheeks [[spoiler: that turn into solid circles once he successfully kills Calliope]]. His eyes are no long red, but no less eerie, [[spoiler: when he transforms into [[BigBad Lord English]] and his eyes turn into constantly cycling pool balls.]]
* ''Webcomic/ImTheGrimReaper'': One of Scarlet's eyes tends to glow when she summons her scythe. Her irises are always bright red.
* In ''Webcomic/ImpureBlood'', [[https://web.archive.org/web/20110616190510/http://impurebloodwebcomic.com/Pages/Issue4PAGES/ib082.html when annoyed]]. Note that her eyes can also glow blue for other magical purposes.
* ''Webcomic/{{Kagerou}}'': when (the aptly-named) Red takes over Kano's body, his eyes turn red. And Red is a psychopathic rapist and murderer.
* Zig-zagged in ''Webcomic/KillSixBillionDemons'': red eyes aren't uncommon in the AmazingTechnicolorPopulation, but they do show up on some of the most dangerous people in Creation: GodEmperor Zoss and OneManArmy Maya.
* Quite a few characters from ''Webcomic/LsEmpire'' (most notably [[spoiler:Dark Star]]). Pix averts this as, despite him always having red eyes [[spoiler: due to being Dark Star's son]], he's [[IncorruptiblePurePureness the nicest guy in existence]].
* In ''Webcomic/LookingForGroup'', most characters, regardless of whether they are evil or good, will display the "burst of anger" or bloodlust variant. Bloodrages will most prominently display it before dishing out punishment, but even NiceGuy Cale will display them in bouts of righteous anger.
* Valentino, the BigBad of ''Webcomic/{{Marilith}}'', has red eyes. The effect is highlighted by the rest of the strip being mostly in black and white.
* Otherworlders in ''Webcomic/{{Miamaska}}'' have red eyes and purple sclera. Citizens see this as a threat to their town and [[http://miamaska.tidalcomics.com/index.php?strip_id=49 take action accordingly]].
* ''Webcomic/{{Noblesse}}'': One of the major factions in the story is [[OurVampiresAreDifferent the nobles of Lukedonia]], all of whom, including the protagonist Rai, have red eyes.
* ''Webcomic/TheOrderOfTheStick'':
** Sabine's eyes glow red in her true form. There is an early warning of her true nature in [[http://www.giantitp.com/comics/oots0053.html this strip]], which is before she's revealed to be a fiend. Later, the glowing-red eyes are a [[http://www.giantitp.com/comics/oots0356.html hint for the reader]] that she's shapechanged.
** Xykon has [[GlowingEyelightsOfUndeath glowing red eyes]] too.
** Also, [[http://www.giantitp.com/comics/oots0079.html Loki]], god of Flames and Chaos.
** [[spoiler: Malack's]] eyes change to red from their usual [[spoiler: pink]] when using his vampiric abilities.
* ''Webcomic/PennyArcade'':
** Tycho gets these whenever he gets particularly angry or is acting particularly evil, apparently because his body harbors a dark spectre from the world of dreams.
** ''Webcomic/PennyArcade'' sub-comic ''Automata''. There's something in that time signature and it changes the eyes from the standard blue to...[[http://www.penny-arcade.com/comic/2009/8/3/ help.]]
* In ''{{Webcomic/Phantomarine}}'', Cheth's eyes turn red when he is experiencing [[https://www.phantomarine.com/comic/444-special-delivery extreme emotions]].
* ''Webcomic/RescuingDara'' [[AvertedTrope averts]] this trope, with the hero Chivai and both the heroic and villainous Lucarios all having red eyes.
* In ''Webcomic/{{Roza}}'', [[https://web.archive.org/web/20090210011326/http://www.junglestudio.com/roza/?date=2007-05-23 the monstrous guard]].
* Subverted in ''Webcomic/RustyAndCo'' by a [[TheBrute hulking]], red-eyed mercenary from a [[BeastMan gnoll]] tribe: cousin Slobber, the friendly pug who [[http://rustyandco.com/comic/level-7-77/ loves cotton candy]] and happily pulls a MookFaceTurn when his old boss takes a dive into lava.
* While this is not common due to the art style of ''Webcomic/ScandinaviaAndTheWorld'', it does occasionally show up, generally when either [[http://satwcomic.com/dysfunctional-family Åland]] or [[http://satwcomic.com/smalltalk Finland]] are especially upset.
* ''Webcomic/SlightlyDamned'': Subverted with [[ThePollyanna Buwaro]] [[note]] At least when he isn't [[spoiler:''completely'' [[SuperpoweredEvilSide berserk]]]] [[/note]] or [[DefectingForLove Lakritz]] who are both among the kinder demons around, however red seems to be one of the most common demon eye colors and most of them play it straight. The most notable of these demons is [[spoiler:Iratu]] who at first seems to be friendly but [[InVinoVeritas that's]] because he was drunk and when we see him sober we learn he is a cunning and powerful General of [[TheLegionsOfHell Hell's Army]] who [[spoiler:leads an attack on a major city that kills hundreds if not thousands of innocent people]].
* ''Webcomic/SluggyFreelance'':
** In one story, Bun-bun the evil mini-lop rabbit is stuck with the annoying animated shadow of the groundhog who's the AnthropomorphicPersonification of Groundhog's Day. Unable to attack the insubstantial creature, he's forced to suffer all its antics. But finally it manages to do something that angers Bun-bun so much that he finally snaps. He gets ''so'' angry his eyes turn red, and subsequently he emits a red aura. Insofar as there is an explanation to this, it could be that [[spoiler: by that time Bun-bun was already a mildly supernatural being due to being saddled with being the Easter Bunny as well as the official "groundhog"]].
--->'''Shadow''': What do you want to do?\\
'''Kiki the ferret''': I have a pretend karaoke machine made from a toilet-paper roll!\\
'''Shadow''': You like karaoke too?\\
'''Kiki''': I LOVE karaoke!\\
'''Shadow''': A one and a two and a\\
'''Bun-bun''': '''''That's IT! Everybody dies!'''''
** In "Anima: Culmination", Troloria, a psionicist with godlike powers, normally has blue GlowingEyes. Whens he gets really angry, she gets first red dots in the middle of them and then wholly red glowing eyes.
* Eli of ''Webcomic/SoulToCall'' has red, sometimes glowing eyes. While the population at large, especially [[ChurchMilitant The Order]] believes that he is dangerous, the fact is, that he is actually very meek, and shy. The red eyes glowing means that ''something else'' has just shown up, and '''that''' is what's actually dangerous.
* Dr. Schtein of ''Webcomic/StringTheory2009'' has prosthetic eyes that glow a sinister red, having lost his original eyes in a lab explosion. Thus far, they seem to be foreshadowing his eventual rise to supervillainy. They even glow in the dark, much to the horror of his prison roommate.
* Darko, the mercenary from ''Webcomic/TheStupiders'' has glowing red eyes: ''[[http://www.stupiders.com/comic.php]]''.
* In ''Webcomic/SurvivingRomance'' it's one of the signs of someone having become a zombie.
* ''Webcomic/{{Terra}}'' has Sovereign Northazul Kalar, EvilOverlord of an empire trying to conquer the galaxy, and his son Solus Kalar, head of a NebulousCriminalConspiracy that started out as a private army for Northazul.
* ''Webcomic/TowerOfGod'':
** Ha Yuri Jahad just lives and breathes this trope, especially when she gets serious.
** Pedro the "Death Eye" has piercing red machine-like eyes that are his most distinguishing feature. [[ObviouslyEvil He just so happens to also be]] [[DragonWithAnAgenda Karaka's]] [[ObviouslyEvil underling]].
* Subverted in ''Webcomic/TwoGuysAndGuy'': Wayne thinks [[http://www.twogag.com/archives/2204 Guy's eyes glow red in the dark]] ''because'' she's evil. [[spoiler: The optometrist is pretty upset Wayne didn't mention it sooner, implying it's not only unnatural but also dangerous.]]
* ''Webcomic/{{Underling}}'': [[https://web.archive.org/web/20100619071344/http://underlingcomic.com/page-seventy-five/ Demons.]] This is awkward for Lazarus when he gets them, and a tail, and horns.
* ''Webcomic/{{Waterworks}}'': Flush gains a set of red eyes just before he uses his deadly SpinAttack. [[http://mspfanventures.com/?s=43&p=238 "oh hey flush. you're sporting the evil red eye look rather nicely"]]
* ''Webcomic/WeakHero'':
** A variation in that Forrest constantly seems to have bloodshot eyes, meaning that it's his sclera that look red while he goes around violently beating people up.
** Robin has narrow eyes with small red irises, and is a BloodKnight that thirsts to take on anyone in a brawl.
** When Wolf is shown proof that Rowan was the one who took his prized bag, an aura flares about him and his eyes go bloodshot in rage. Jared compares it to a rabid dog being given meat.
** [[InvincibleVillain Donald]] is one of the nastiest characters in the story, and his blood-red eyes combined with paper-white skin give him the appearance of a vampire.
* In ''Webcomic/YokokasQuest'', Mao gets scary [[BlackEyesOfCrazy black sclerae]] with red irises at [[https://yokokasquest.com/comic/chapter-2-page-33/ the start of his fight]] [[CainAndAbel with Yokoka]].
[[/folder]]

[[folder:Western Animation]]
* ''WesternAnimation/AaahhRealMonsters'': Before he transforms into his OneWingedAngel form, Ickis' eyes start turning red, complete with a sound effect that sounds like they're filling up with blood. To a lesser extent [[SadistTeacher The Gromble]], whenever he's '''''really''''' ticked off his eyes start turning red much in the same manner as Ickis' eyes before he looms.
* [[EvilPoacher The Huntsman]] from ''WesternAnimation/AmericanDragonJakeLong'' had completely red eyes in season 1, then later had normal eyes when the characters were all redesigned in season 2.
* ''WesternAnimation/AtomicBetty'':
** In an episode when RichBitch Penelope is cloned, the clone has red eyes. It is probably less evil than the original.
** [[CatsAreMean Koreena]], Betty's old rival turned villain, also has red eyes.
* ''WesternAnimation/TheBatman''[='=]s version of ComicBook/TheJoker has nearly completely red eyes (but yellow pupils).
* ComicBook/TheJoker's ''WesternAnimation/BatmanBeyondReturnOfTheJoker'' design (also used for ''WesternAnimation/StaticShock'' and ''WesternAnimation/JusticeLeague'') also has red pupils. The red eyes on the latter-day Franchise/DCAnimatedUniverse design, along with the slicked-back hair sported by the Future Joker design in ''Return of the Joker'', were inspired by the novel's descriptions of Hannibal Lecter.
* ''WesternAnimation/BatmanTheBraveAndTheBold'':
** The eyes of Ultra-Humanite's army of mind-controlled dinosaurs glow red in "Four Star Spectacular!"
** Inverted with the Blue Beetle, where when his eyes are red, he's friendly.
* WesternAnimation/BugsBunny cartoon ''Hyde and Hare''. When Dr. Jekyll turns into the evil Mr. Hyde his eyes turn red. After Bugs drinks the formula and turns into a giant green rabbit the same happens to him.
* ''WesternAnimation/BunsenIsABeast'': Amanda Killman has red outlines around her eyes to reflect her devilish nature.
* ''WesternAnimation/BuzzLightyearOfStarCommand'':
** The AffablyEvil Emperor Zurg.
** Also, XR had red eyes during his brief stint as villain NOS-4-A2's vampire slave.
** And NOS-4-A2 himself has red eyes.
* ''WesternAnimation/CaptainPlanetAndThePlaneteers'': In "The Conqueror", [[BigBad Zarm's]] eyes turn red whenever [[TheCorrupter he's manipulating]] the older Planeteers.
* In ''WesternAnimation/Castlevania2017'' the vampires that serve under {{Dracula}} have red eyes that's usually the [[https://vignette.wikia.nocookie.net/castlevania/images/8/8e/DraculaArmyVampireSoldiers.JPG/revision/latest/scale-to-width-down/444?cb=20181026212405 only things that can be seen under their hoods]], though it's not a genetic trait as other named vampires don't have red eyes e.g Carmilla who has IcyBlueEyes. Also Alucard, Dracula's son has SupernaturalGoldEyes to show he's a HalfHumanHybrid but Drac himself has the classic scarlet pupils and when he's enraged [[https://fsmedia.imgix.net/aa/a2/77/5b/1447/4adb/9aeb/e9394510f27d/dracula-in-netflixs-castlevania-animated-series.jpeg the whole sclera goes red]].
* On ''WesternAnimation/CodeMonkeys'', whenever a character gets really angry or psychotic, their pixel eyes will briefly become red.
* WesternAnimation/CountDuckula's demented cousin, a pyromaniac vamp who likes to dismember his victims. Also El Loco, the vicious bull Duckula has to fight.
* ''WesternAnimation/DannyPhantom'':
** Several of Danny Phantom's enemies have red eyes, including his arch-rival, Vlad Plasmius (whose eyes are blue in human form and completely red and pupil-less in ghost-form), and his [[FutureMeScaresMe sociopathic alternate-future self]], Dark Danny (AKA Dan Phantom). Red-eyed DungeonMaster Clockwork, on the other hand, despite being originally portrayed as a villain, is good-hearted but on the neutral side.
** Danny's own red eyes when under the control of Freakshow in "Control Freaks".
* In ''WesternAnimation/DarkwingDuck'' , [=DarkWarrior=] Duck has glowing red eyes (well, his mask does), and the screen fades around them in an extremely creepy scene transition.
* In the ''WesternAnimation/GadgetBoyAndHeather'' episode "Double, Double, Toil, and Dabble", Gadget Boy's EvilKnockoff Bad Gadget Boy had red eyes to distinguish him from the real Gadget Boy.
* [[PlayingWithATrope Played with]] on ''WesternAnimation/{{Gargoyles}};'' [[BigBad Demona]], the [[KillAllHumans evil]] gargoyle, has eyes that glow red when she's angry while our heroes' eyes glow white. However, it was later established that it was a sex-linked trait; [[AffirmativeActionGirl Angela]], a new heroic gargoyle in Season 2, also has red-glowing eyes, as do all other female gargoyles, while all male gargoyles have white-glowing eyes (except in the case of clones, where the eye-glow colors are gender-swapped). [[GoodIsNotSoft Still definitely a sign to take warning, though]].
%%* The Duke from ''WesternAnimation/{{Gawayn}}''.
* Odd variant: while Serpentor from ''WesternAnimation/GIJoeARealAmericanHero'' was always evil, his eyes briefly turned red when he held the battleax of UsefulNotes/VladTheImpaler, one of the many historical tyrants whose DNA he shared. This was presumably a hint that Vlad had really been a vampire in the show's universe and contact with one of his artifacts had evoked that trait in Serpentor.
* Trina Riffin from ''WesternAnimation/{{Grojband}}'' whenever she's writing in her diary in Anger or Fear mode.
* Skeletor, nemesis of He-Man from ''WesternAnimation/HeManAndTheMastersOfTheUniverse2002''. His eye (sockets) function as a literal warning, as little red lights start growing in them when he gets angry or excited in evil ways.
* ''WesternAnimation/TheHollow'': The devil dogs have glowing eyes that have a reddish tint.
* The Grinch in ''WesternAnimation/HowTheGrinchStoleChristmas'' has red pupils on yellow for most of the film. His eyes turn blue-on-white during his HeelFaceTurn, then switch back (by mistake?) for a few shots, then stay blue.
* In ''WesternAnimation/IvickVonSalzaTheLittleLumberjack'', whenever the yeti gets mad, his eyes turn red.
* In ''WesternAnimation/JackieChanAdventures'', the Shadowkhan and the Demon Sorcerer BigBadDuumvirate, among others, have red eyes. When Jade and later Valmont get possessed by the show's overall BigBad Shendu, their eyes turn red whenever HE'S in control of their body.
* ''WesternAnimation/JonnyQuest'' TOS episodes
** "Monster in the Monastery". The fake yeti (who are malicious enemy agents) have red eyes.
** "The Robot Spy". The titular opponent - which was sent by the DiabolicalMastermind Doctor Zin - has one large red eye.
* Played with in ''WesternAnimation/TheLegendOfKorra'': The [[StatuesqueStunner imposing]] and [[TheBrute scary]] [[BombThrowingAnarchists Red Lotus]] [[HavingABlast combustionbender]] [[ColdSniper P'Li]] has eyes of [[DownplayedTrope an unusual shade of russet]]—which is [[JustifiedTrope still in keeping with the usual theme]] of [[PlayingWithFire firebenders]] having [[ElementalEyeColors gold or brown eyes]]—and a ''bright scarlet'' one [[PowerTattoo tattooed]] on her [[ThirdEye forehead]].
** Played straight with Unalaq, whenever he enters the Avatar State, and in his Dark Avatar form.
* The Biskit twins in ''WesternAnimation/LittlestPetShop2012'' have reddish eyes, though they're not so much evil as they are sheltered and distant from those around them.
* Dick Knubbler's robotic eyes turn red when he gets pissed off in ''WesternAnimation/{{Metalocalypse}}''. Not so much "evil" as "{{Jerkass}}", but when one works for five ChaoticNeutral musicians that cause destruction wherever they go (by accident, sometimes, even!), it's hard to call oneself "good".
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'':
** Discord's eyes are yellow with red pupils, and he used to be a villain.
** Fuzzy Legs the spider has solid red eyes, as part of his character's parody and subversion of stock portrayals of monstrous spiders.
** "[[Recap/MyLittlePonyFriendshipIsMagicS2E4LunaEclipsed Luna Eclipsed]]": The spiders created by Luna's spell have solid red eyes, as part of their exaggerated monstrous appearance.
** "[[Recap/MyLittlePonyFriendshipIsMagicS3E5MagicDuel Magic Duel]]": The [[ArtifactOfDoom Alicorn Amulet]] makes the wearer's eyes go red. Trixie, who showcases the effect, becomes drunk with power and starts acting outright like a tyrant, as opposed to her moderate {{Jerkass}} tendencies.
** "[[Recap/MyLittlePonyFriendshipIsMagicS4E6PowerPonies Power Ponies]]": Fluttershy's eyes turn red when a firefly was flicked out of the crosshairs of the weapon as part of her HulkingOut.
** "[[Recap/MyLittlePonyFriendshipIsMagicS4E7Bats Bats!]]": Fluttershy gets red eyes when she's turned into a [[OurVampiresAreDifferent vampire]].
** "[[Recap/MyLittlePonyFriendshipIsMagicS5E13DoPrincessesDreamOfMagicSheep Do Princesses Dream of Magic Sheep?]]": Among the Tantabus' dream monsters, Monster Angel Bunny, the flying and some of the living houses have red eyes with yellow pupils.
** "[[Recap/MyLittlePonyFriendshipIsMagicS6E25ToWhereAndBackAgainPart1 To Where and Back Again: Part 1]]": Discord's pupils literally turn to fire for a moment when he learns the Changelings have captured [[MoralityPet Fluttershy]].
** "[[Recap/MyLittlePonyFriendshipIsMagicS7E2AllBottledUp All Bottled Up]]": The ponies affected by the inadvertent release of Starlight's [[HatePlague bottled anger]] have glowing red eyes.
** "[[Recap/MyLittlePonyFriendshipIsMagicS8E12MarksForEffort Marks for Effort]]": [[spoiler:Cozy Glow]]'s red irises are the first cue that she is actually a manipulative villain, which isn't shown until several episodes later.
** "[[Recap/MyLittlePonyFriendshipIsMagicS8E22WhatLiesBeneath What Lies Beneath]]": The spiders' eyes glow bloody red, strengthening Yona's original terror of them.
* ''WesternAnimation/TheNewAdventuresOfSuperman'': "The Japanese Sandman". The titular monster (who commits evil acts in return for a black pearl) has red eyes.
* ''WesternAnimation/{{Ninjago}}: Masters of Spinjitzu''. All the skeletons, Lord Garmadon and the Hypnobrai tribe have glowing red eyes.
* ''WesternAnimation/ThePenguinsOfMadagascar'':
** In "Dr. Blowhole's Revenge", Skipper activates a King Julien robot decoy.
--->'''Skipper''': Glowing red eyes. That's almost never good.\\
(''the robot explodes'')
** In "The Hoboken Surprise", all the animals are replaced with robots with red eyes.
* The first season of ''WesternAnimation/PoundPuppies1980s'' featured a villain named Captain Slaughter in some episodes. All we could see of his shadow-obscured face was a pair of sinister red eyes.
* ''WesternAnimation/ThePowerpuffGirls1998'' (and its [[Anime/PowerpuffGirlsZ anime]] counterpart) gives us Brick of the [[ThePsychoRangers Rowdyruff Boys]]. True to this trope, Brick loves to [[ChaoticEvil cause destruction and hurt others]].
** In the 1998 series' episode "Tough Love", the people put under HIM's mind control in his attempt to kill the girls sport red blank eyes, alongside an angry expression.
* Though a number of ghosts from ''WesternAnimation/TheRealGhostbusters'' have these, probably the most notable example is "The Umpire" from "Night Game". While for the most part a neutral judge and even a ReasonableAuthorityFigure, his eyes glow ''bright red'' once and only once: when Peter so much as implies [[BerserkButton a human soul isn't the most valuable thing in existence]]. [[OOCIsSeriousBusiness Peter immediately takes it back]].
* ''WesternAnimation/SamuraiJack'' has Mad Jack, Aku's embodiment of Jack's own dark side.
* ''Franchise/ScoobyDoo'':
** ''WesternAnimation/ScoobyDooWhereAreYou'' episode "A Gaggle of Galloping Ghosts". The [[UsefulNotes/{{Romani}} Gypsy]] FortuneTeller, who turns out to be the episode's {{villain|s}} in disguise, has red eyes.
** Some of the ghosts from the Chest of Demons that Scooby and Shaggy are tasked with recapturing after being tricked into releasing them in ''WesternAnimation/The13GhostsOfScoobyDoo'' have red eyes.
*** Maldor the Malevolent in "Scoobra Kadoobra" starts out with yellow eyes, but at one point his eyes turn red when he glares at Daphne. A bit later, his eyes stay red for the rest of the episode.
*** The Reflector Specter from "Reflections in a Ghoulish Eye" is a hideous red-eyed demon who hides in mirrors.
*** Marcella, who is recaptured by the gang in the episode "When You Witch Upon a Star", has red, pupil-less eyes.
** The evil clones of Mystery, Inc. in the ''WesternAnimation/WhatsNewScoobyDoo'' episode "A Scooby-Doo Valentine" have red eyes.
* ''WesternAnimation/SheRaAndThePrincessesOfPower'':
** Hordak's eyes are a flat red glow, without iris or pupil. He's the BigBad.
** When corrupted by a First One virus, Adora gains these [[SuperMode in her She-Ra form]]. Corrupted Adora is TheBerserker, and is generally best avoided; in She-Ra form, Adora can break rocks, and while corrupted, she has ''absolutely'' no goals beyond mindless bloodshed.
** Averted with Entrapta. While she has dark red eyes and wears a creepy, red-eyed welding mask, she's TrueNeutral and most of the damage she causes is in pursuit of [[ForScience learning something new]], as opposed to evil; indeed, she ends up as a TokenGoodTeammate to the Horde after her defection.
* In ''WesternAnimation/{{Slugterra}}'', the eyes of mecha-beasts turn red when they are ghouled; as seen in "Mecha Mutiny".
* Dr. Julian Robotnik from ''WesternAnimation/SonicTheHedgehogSatAM'' has a pair of red cybernetic optics that shine like hellish spotlights in the dark.
* Squidward, Plankton, and Man Ray from ''WesternAnimation/SpongeBobSquarePants''. Averted with Gary. Ironically, the former two are now the most sympathetic characters on the entire show.
* ''WesternAnimation/StarTrekLowerDecks'':
** It's revealed that the Tamarian expression for "Oh, crap!" is "Zinda, his eyes red!"
** Admiral Buenamigo's pet project, the fully-automated ''Texas''-class U.S.S. ''Aledo'', starts glowing red when [[spoiler:its corrupted A.I. causes it to turn on and kill Buenamigo before attacking other Starfleet assets]].
* ''WesternAnimation/StarWarsTheCloneWars'':
** Cad Bane is a Duros bounty hunter with red eyes. He's an extremely dangerous fighter and crack shot with a blaster, and he most certainly WouldHurtAChild in exchange for a paycheck.
** Season 3's Mortis trilogy has the Son, AnthropomorphicPersonification of TheDarkSide, combined with black sclera.
* On ''WesternAnimation/StarWarsRebels'', [[KidHero Ezra Bridger's]] eyes take on a reddish tinge when he opens the Sith holocron, signifying the growing influence of TheDarkSide on him.
* ''WesternAnimation/{{Superfriends}}'':
** The 1973 episode "Menace of the White Dwarf". The evil MadScientist Raven (who acts more like a {{Comic Book|s}} supervillain than any other opponent the Superfriends faced during this season), has red eyes.
** The evil Superman from the 1979 episode "[[MirrorUniverse Universe of Evil]]" has red eyes as well, and for bonus points, they're ringed in black, [[http://images2.wikia.nocookie.net/__cb20090623171754/superfriends/images/6/6a/EvilSuperman.png with freakin' huge demonic points]]. Evil!Batman and Evil!Robin also have red eyes in place of their good counterparts' [[MonochromaticEyes plain white eyes]].
* ''WesternAnimation/TeenTitans2003'':
** Trigon, [[SatanicArchetype very bad dude]] indeed.
** Brother Blood, BigBad of the third season, has eyes that glow red when he uses his PsychicPowers; in the fifth season, the mechanical eyes on the skull-"face" on the Brain's life-support pod also glow red when the Brain is interfacing with his computers or is just angry.
** Red Star's eyes are normally green, [[MonochromaticEyes lacking pupils or whites]]. When his uncontrollable and incredibly destructive radioactive powers start to activate, they glow red.
** Raven isn't evil and her eyes are normally a deep purple, but when she goes OneWingedAngel her eyes glow solid red. And suddenly there's ''four'' of them. [[spoiler: Makes sense since Trigon's her dad.]]
* Nearly all the Decepticons of the original ''Franchise/{{Transformers}}'' (notably the [[WesternAnimation/TheTransformers original cartoon]]) had red optics. Later versions had a bit more optical variety.
** The episode "Attack of the Autobots" had the BrainwashedAndCrazy Autobots' optics turn red, being restored to their normal blue when cured.
** ''WesternAnimation/TransformersAnimated'' has all red-eyed (or in the case of Soundwave, red-''[[CoolShades sunglassed]]'') Decepticons like the original cartoon, with the exception of the nominally-a-Decepticon Swindle, who has purple eyes. However, Sari Sumdac, a ''human child'', also appears to have red eyes. [[spoiler:They turned [[https://static.tvtropes.org/pmwiki/pub/images/vlcsnap-488331.jpg blue]] after she [[SuperMode "upgraded" herself.]]]] Also, in ''Animated'', Wreck-Gar's eyes turn red when he threatens to destroy Detroit as a reference to ''WesternAnimation/TransformersTheMovie'' and his G1 counterpart's toy commercial. An interesting example occurs in Wasp. Originally, he had blue eyes, but after his stay in prison (and subsequent madness and desire to turn Bumblebee into iron filings), they become purple. And what color do you get when you mix red and blue?
*** [[spoiler:The Autobots']] eyes also turned red when they were brainwashed by [[spoiler:Soundwave]] into being evil.
** Pops up a few times in ''WesternAnimation/BeastWars''', despite bots like Rattrap and Rhinox just normally having red optics, to warn you things are about to get real. When Megatron becomes a transmetal the first you see of him are his glowing red eyes against a silhouette, Silverbolt's eyes are normally gold but when Blackarachnia was killed and he uttered Tarantula's name in a vengeful manner [[BewareTheNiceOnes they]] [[RoaringRampageOfRevenge turned]] [[NightmareFuel red]], and most notably when Rhinox is reprogrammed as a Predacon his normally wise red eyes glow blood red for ''[[VilerNewVillain very good reason]].''
** [[DemonicPossession False Convoy]] in ''[[Manga/TransformersZone Transformers: Return of Convoy]]'' is distinguished from Optimus Prime by having red eyes instead of blue.
** ''[[ComicBook/TransformersShatteredGlass Shattered Glass]]'', of course, reverses this, with the Decepticons mostly having blue optics and the Autobots mostly having red ones. Though there are a fair number of green, yellow, and other oddball optic colors on both sides, and Heatwave strangely has red optics despite being a nice guy, even by his fellow Decepticons' standards. [[spoiler:Turns out, it's because he's not actually from the SG universe at all.]]
* In ''WesternAnimation/WinxClub'' , although Bloom is a friendly, easygoing and sweet girl most of the time, if you commit the mistake of pissing her off enough (and trust us, it's very hard to achieve it) you'll see LITERAL FLAMES coming from her eyes...
* In ''WesternAnimation/WhatIf2021'', the eyes of [[spoiler:Doctor Strange]] slowly turn to red as he absorbs more and more power from [[spoiler:all the extra-dimensional creatures he consumes]], along with an increasingly demonic appearance and unhinged behaviour.
[[/folder]]

[[folder:Literature]]
* ''Literature/TheAmityvilleHorror''. The youngest child, 5 year-old Missy, had repeated encounters with a pig-like demonic creature with red glowing eyes whom she called Jodie.
* ''Literature/Area51'': The Airlia all have red eyes, and sure enough, they're bad guys.
* ''Literature/TheDoorwayAndTheDeep'': The ice crawler that attacks the boat [[TheProtagonist Lottie]] and co. are in has red eyes.
* Creator/IsaacAsimov:
** "{{Literature/Reason}}": When Donovan insults [[RobotReligion QT's god]], the robot's eyes turn a deeper red and the narration tells us that the tension between them increases. It is as if [[TinMan the robot was angered]] by the heresy.
** "{{Literature/Robbie}}": Mrs Weston is disturbed by Robbie's GlowingMechanicalEyes, but Gloria and Mr Weston disagree with her assessment.
* The Infected of ''Literature/AnOutcastInAnotherWorld'' have glowing red eyes which brighten when they come across as enemy – which is anything that breathes – or when the Infection spreads further in their bodies. Considering their horribly mutated forms, it’s by far the least-horrifying thing about them.
* ''Literature/{{Beowulf}}'': The monster Grendel is described as having glowing red eyes: "on fagne flor feond treddode,/eode yrremod; him of eagum stod/ligge gelicost leoht unfæger" ("Across the decorated floor the fiend trod, went enraged in mind; there stood in his eyes a foul light most like to flame").
* ''Literature/BoredOfTheRings'', a parody of ''Literature/TheLordOfTheRings'': the Black Riders have "perfectly normal red glowing fires" where their eyes should have been.
* {{Inverted|Trope}} in ''Literature/TheChildrenOfMan''. In this setting, red eyes mark you as a Tereskan, an order of healer-mages who are one of the primary forces of good in the setting.
* ''Literature/TheChroniclesOfPrydain'' novel ''The High King''. Gwythaints, the bird servants of the DarkLord Arawn, have blood-red eyes.
* Mayor Oculon of ''Literature/CityOfDevils'' has... well, ''is'' a giant red eye. With tentacles.
* In "Literature/ColdSnap", DiabolicalMastermind Derek Leech's Rolls Royce has a customized hood ornament with rubies for eyes.
* In Creator/RobertEHoward's Franchise/ConanTheBarbarian stories "Literature/ShadowsInZamboula" and "Literature/QueenOfTheBlackCoast", villainous {{Evil Sorcerer}}s have red eyes.
* Creator/MichaelMoorcock's ''Literature/{{Corum}}'': The Queen of the Swords''. Prince Gaynor the Damned, an evil champion of Chaos, has dead red eyes that blaze in terror and agony.
* ''Literature/TheCosmere'':
** Voidbringers in ''Literature/TheStormlightArchive'' are alleged to have red eyes, and we see at least one form of Voidbringer, a thunderclast, with glowing red eyes. Furthermore, in ''Literature/WordsOfRadiance'', [[spoiler: the Parshendi's eyes turn red when they transform into Voidbringers]].
** In ''Literature/ShadowsForSilenceInTheForestsOfHell'', the shades normally drift away from humans and are mostly harmless unless you manage to walk right into one despite them drifting away. But break the Simple Rules (don't move too fast at night, don't kindle fire, and never draw blood), and their eyes light up red as they enrage. If that happens, if there is a nearby safe place enclosed by silver, run there. Otherwise, your ass is toast.
* Creator/HPLovecraft's Franchise/CthulhuMythos story ''The Haunter of the Dark''. The titular monster has a red, three-lobed, burning eye.
* Those possessed by demons in ''Literature/DanceoftheButterfly'' will show a red coloring to their eyes.
* [[NamesToRunAwayFromReallyFast The Death Dealer]] from Creator/FrankFrazetta, is depicted with either [[MonochromaticEyes red eyes or completely white]] depending on whether he's about to fight a strong foe or not. The books based on the character artwork, are about the BarbarianHero, Gath of Baal who's already superhumanly mighty before he becomes the bearer of the [[ArtifactOfDoom Horned Helm]] which makes him the avatar of the evil god of death.
* For most of the first book in the ''Literature/DeptfordMice'' trilogy, all anyone ever sees of BigBad Jupiter are his fiery red eyes emerging from the blackness of the portal where he dwells, located in the sewers of London.
* The plus-sized UsefulNotes/TyrannosaurusRex in ''{{Literature/Dinoverse}}'', who Mike names "Moriarty", is first seen with eyes that seem to glow red, though Mike thinks it's a trick of the sunset or a reflection of the blood at the dinosaur's feet.
* Subverted in the web-novel ''Literature/{{Domina}}''. A lot of the demons have red eyes, but since it's optional, they almost certainly chose them to {{invoke|dTrope}} this trope for intimidation.
* Literature/{{Dracula}} has red eyes. His houseguest, Jonathan, being [[StiffUpperLip Br]][[TheStoic it]][[TooDumbToLive ish]], does not comment on this.
* ''Dragontales'', a collection of ''TabletopGame/DungeonsAndDragons''-related stories from the creators of ''Magazine/{{Dragon}}'' magazine.
** In "Out of the Eons'', a Gardner F. Fox "Niall of the Far Travels" short story, the evil deity Adonair has wide fire-red eyes.
** "Black Lotus Moon". The huge guardian monster in Garilon's tower has large, saucer-shaped eyes with red irises like clots of blood.
* The villainous Steerpike of Mervyn Peake's ''Literature/{{Gormenghast}}'' series has dark red eyes.
* In "Green Tea" by Creator/JosephSheridanLeFanu, the demonic monkey that pursues Reverend Jennings has eyes that glow from within with a "faint but deep red light". Indeed the first thing Jennings notices when he first sees the monkey are its eyes, appearing as two "tiny discs of red" hovering in the darkness.
* Lord Voldemort from the ''Literature/HarryPotter'' books has red eyes with slits for pupils, like a snake's eyes (although not in [[TheFilmOfTheBook the films of the books]], except the first, which actually gets it right).
** Red eyes seem to imply evil thoughts/feelings. Young Tom Riddle's eyes gleam red briefly at a moment when he is extremely greedy, and later, when he has started turning into Voldemort, his eyes become bloody-looking - they ultimately end up staying pure red after he splits his soul seven times. Also, when Ron is being psychologically tortured by Riddle!Harry-and-Hermione from the horcrux, his eyes flash red for just a second...before he ignores them and shuts them up for good.
** Notice the formidable chiasmus at the end of ''[[Literature/HarryPotterAndTheGobletOfFire Goblet of Fire]]''. Voldemort has red eyes and uses a green DeathRay. Harry Potter has good green eyes, and uses the good red ray (remember the color-coding of laser beams in the original ''Franchise/StarWars'' trilogy).
* In ''Literature/HeartOfSteel'', Alistair's mechanical eye normally glows blue, but when he is angry it glows red.
* Creator/JRRTolkien's ''Literature/TheLordOfTheRings'' and ''Literature/TheHobbit''
** ''Literature/TheHobbit''
*** When the evil worgs tree the party, they are described as having [[GlowingEyes shining]] red eyes.
*** The very evil dragon Smaug has red eyes which emit searchlight-like beams.
** The villain Sauron, while not red-eyed himself, uses a red eye on black as his symbol.
** In ''Literature/TheTwoTowers'', the Mûmak (giant elephant) who tramples the Ithilien Rangers and men of Harad is said to have raging small red eyes.
** In ''Literature/TheReturnOfTheKing'' chapter "The Scouring of the Shire" it says that Saruman's evil agent Wormtongue has red eyes.
* Mentioned a lot in ''Literature/TheHouseOfNight''. The Red Fledglings and Vampires have red eyes when they've just fed from a human or when they're seriously pissed off. The Raven Mockers also have red eyes.
* The Shrike from the ''Literature/HyperionCantos'' is a 3-meter-tall {{Nigh Invulnerab|ility}}le being made of lethally sharp blades. It has multifaceted red-glowing eyes and most times it shows up, it's to carry someone off to be impaled on a gigantic thorn tree where they will [[AndIMustScream live forever in agony]].
* In the ''Literature/LeagueOfMagi'' stories, Rose Cross has red eyes as a symptom of her albinism. She's not quite ''evil'', but she's definitely scary.
* In Creator/RASalvatore's ''Literature/TheLegendOfDrizzt'', the [[AlwaysChaoticEvil drow]] have deep red eyes. This trope is carried even further in that Drizzt, one of only two good drow seen in the series, has lavender eyes.
* In the ''Literature/MalazanBookOfTheFallen'', Silchas Ruin is said to be a "red-eyed nightmare". Depending on the point of view, he is either a villain with good intentions, or a heroic man with bad publicity, but either way his red eyes are what ticks people off that he's dangerous. They are variously described as lifeless, reptilian, unnerving, cold and dead.
* In the original picture book of ''Literature/MarsNeedsMoms'', Milo's mom (and Milo himself) have bright orange-red eyes. It doesn't mean anything but it does make TheReveal of [[TheFaceless Mom's face]] a little unnerving.
* The short story "Nitimandrey & the Cabinetmaker's Vision'' in ''Magazine/{{Ares}}'' magazine Special Edition #1 (Summer 1983). When King Nitimandrey and the cabinet maker enter the cave beneath the fifth peak of Mount Nanda-pe, they find large numbers of bats with red GlowingEyes watching them. The evil bats are eventually commanded to attack the pair and almost kill them before they finally escape.
* Ares from the ''Literature/PercyJacksonAndTheOlympians'' books actually has ''fire where his eyes should be''. Hestia also has fire for eyes, but she is an aversion for this trope, as she is actually one of the kindest gods in the series.
* ''Literature/PeterPan''. Captain Hook had light blue eyes, but when he was angry, they would flash red.
* Creator/DeanKoontz's ''Literature/{{Phantoms}}''. When appearing to Jeeter and Kale in the cave, several of the monstrous forms that the incredibly evil Ancient Enemy takes have red eyes.
* ''Literature/APieceInTheGameOfGods'': Maelyne, when reminded of her recent loss:
--> My eyes remained fixed on this giant glowing woman, and I could see her own anger and frustration. Then, something dawned on me. “They killed your champion…”\\\
“Yes,” Maelyne said, her glowing eyes flashing red for a moment and making me instinctively step back.
* In ''The Price'' by Creator/NeilGaiman, the main character realizes that the creature coming for them is the Devil because it has red eyes. While he's looking through night vision goggles.
* ''Literature/PrincessesOfThePizzaParlor'': In Episode 2, when [[spoiler:Princess Rosalind]] is enraged and gets GlowingEyesOfDoom:
--> [[spoiler:Princess Rosalind]]'s eyes glowed brightest, in a deep bloody scarlet.
* In ''Literature/QuestForFire'' a [[FrazettaMan primitive]] [[CannibalTribe cannibal]] warrior has eyes that gloe red in the firelight.
* In ''Literature/RaceToTheSun'' all monsters that [[TheProtagonist Nizhoni]] can see have red eyes, at least for her monster-hunting senses. Which is helpful, as they are shape-shifters.
* In the ''Literature/RainbowMagic'' series, Storm the Lightning Fairy's book has an extra-mean goblin with red eyes. He shoots lightning at the girls with the power of the Lightning Feather.
* ''{{Literature/Redwall}}'': The Bloodwrath is a state of berserker rage that mostly affects badgers, causing their eyes to glow red as they seek to brutally murder their hated enemy. Lady Cregga Rose Eyes was so named because her eyes were so bloodshot as to be always red, leading to her [[spoiler:going blind]] at the end of her life as Badger Lady of Salamandastron.
* In the AnimatedAdaptation of ''Literature/RikkiTikkiTavi'', Rikki has them whenever he's around the cobras or when feeling angered, annoyed or suspicious.
* Hannibal Lecter of ''Literature/TheSilenceOfTheLambs'' is depicted with maroon (brownish-red) eyes in the books.
* Melisandre from ''Literature/ASongOfIceAndFire'' is an EvilRedhead [[CurtainsMatchTheWindow as well.]]
** Ghost the albino Direwolf has red eyes, noted to be different from Melisandre's, resembling more the blood-red eyes of the weirwood Old Gods. And he's definitely capable of taking off limbs if so inclined.
** Much like Sauron above, [[OmnicidalManiac Euron Greyjoy]] uses a red eye with a black pupil as his personal crest, and given his brother Aeron's description of his "bloodeye", his [[EyepatchOfPower hidden left eye]] may be red, though his nephew Theon seems to believe it is [[BlackEyesOfEvil black]].
* In the ''Literature/SonjaBlue'' series, red eyes are one of the symptoms of vampirism, which makes sunglasses very popular with the vampires--hence the title of the first book of the series, ''Sunglasses After Dark''.
* In ''Literature/SpaceGlass'', the Marauder has these, and is the second most powerful member of the Extragalactic Enthusiasts.
* The ''Series/StarTrekTheNextGeneration'' novel ''The Devil's Heart'' depicts [[TheCaptain Captain Picard]] with red eyes while holding the titular ArtifactOfDoom on the cover.
* ''Franchise/StarWarsLegends'':
** ''Literature/TheThrawnTrilogy'': Grand Admiral Thrawn, a nonhuman Chiss who also had blue skin, had [[MonochromaticEyes solid red eyes]] that were [[WhatBeautifulEyes often said]] to be [[GlowingEyesOfDoom glowing]]. Even when he's solidly the antagonist, he is [[ALighterShadeOfGrey less evil and more ruthless]].
** Darth Bane also had red eyes due to his immersion in the Dark Side of The Force. It's a Sith occupational hazard.
** [[Literature/XWingSeries Ysanne Isard]] actually had heterochromia, one eye being red, the other eye being blue. She's the head of Imperial Intelligence and decidedly evil.
** The same series has the much more minor villain Zekka Thyne, who has red eyes and HellishPupils.
** And it has two characters who each have a glowing red prosthetic eye. Neither of them are villains. One, Booster Terrick, is a smuggler who does not approve of the pilot his daughter fell in love with. The other, Ton Phanan, is an [[DeadpanSnarker incredibly sarcastic]] [[CombatMedic ex-doctor]] [[StepfordSmiler hiding the fact that]] [[CyberneticsEatYourSoul his extensive cybernetics cannot replace the future he lost.]]
* Lung Tien Lien from the ''Literature/{{Temeraire}}'' series is an [[WickedCultured aristocratic]] albino DragonLady with blood red eyes. She also happens to be a twenty-odd ton [[{{Pun}} Lady Dragon]] with a fearsome [[MakeMeWannaShout sonic attack]] for a breath weapon.
* Creator/LinCarter's "Thongor of Lemuria" stories.
** The Grakk, a scaly flying lizard-like monster of the jungles of Chush, has cruel, scarlet eyes.
** The Dragon-Kings, who were the previous rulers of Lemuria before the humans came, have slitted red eyes. They were extremely evil and had great knowledge of sorcery and necromancy.
** The Gunth, extremely strong beastmen who lived in jungles, had gleaming red eyes.
* Creator/GeorgeRRMartin's [[Literature/TufVoyaging Haviland Tuf]] short story "A Beast for Norn". The ironfangs of the planet Lyronica are giant vicious wolf-like creatures with huge teeth and sunken red eyes.
* In the ''Literature/{{Twilight}}'' novel series, the vampires who drink only human blood have red eyes.
* In ''Literature/VampireAcademy'', Strigoi have red rings around their pupils. Seeing red eyes glowing in the dark alerts dhampir guardians to expect an attack.
* When ''Literature/WarrenTheThirteenth'' is in the boiler room of the hotel, we see a bunch of creepy red eyes glowering at him. Subverted when it turns out that the monster they belong to, Sketchy, is very friendly and means no harm at all.
* The monstrous alien in Creator/JohnWCampbell's novella "Literature/WhoGoesThere" has three red eyes.
* Creator/MichaelStackpole's ''Wolf & Raven'' short story "Fair Game". The cyberdog that Selene Reece sends after Wolfgang Kies has eyes that look like red starbursts.
* One of the villains from Creator/MadeleineLEngle's ''Literature/AWrinkleInTime'' is called simply... the Man With Red Eyes.

[[folder:Live-Action TV]]
* ''Series/{{Angel}}'': Lorne's got red eyes because he's a demon, but he's a gentle soul who's pretty sweet and fun company.
* The second Vorlon Ambassador in ''Series/BabylonFive'' has a red light in the "head" of his encounter suit, compared to the original Kosh's green. He's a [[DomesticAbuse much]], [[KnightTemplar much]] nastier person.
* ''Series/{{Battlestar Galactica|2003}}'': Cylons. The [[CyberCyclops single red eye]] sweeping from side to side of their visor makes up a great deal of the Centurions' and Raiders' intimidation factor. Strangely, the only time we see a humanoid Cylon's eyes flash red, [[spoiler:it's Sam Anders, one of the good ones]].
* ''Series/TheBoys:'' [[BewareTheSuperman Homelander's]] eyes flash red when he's angry, and it's usually a cue that [[EyeBeams he's about to laser someone.]] He's also the main villain of the series.
* ''Series/BuckRogersInTheTwentyFifthCentury'' episode "Space Vampire". The Vorvon's eyes glow red when it's using its MindControl powers on a victim.
* ''Series/BuffyTheVampireSlayer'':
** The Master has red eyes, even though vampires usually have yellow eyes.
** After [[spoiler: Tara is killed]], Willow looks up, and her eyes are glowing red. It's even lampshaded/foreshadowed by the episode's title, "Seeing Red".
** Red eyes are possessed by the First Evil's briefly-seen true form.
** The comics show a new breed of vampires. They are much more powerful than the old breed because they are not only much stronger, but are also [[DaywalkingVampire immune to sunlight]]. And while the breed of the old vampires, almost always have yellow eyes, the new vampires have red eyes.
* ''Series/{{Charmed|1998}}'': Used on Inspector Rodriguez [[spoiler: to confirm him as an upper-level demon]].
* ''Series/DoctorWho'':
** In [[Recap/DoctorWhoS14E5TheRobotsOfDeath "The Robots of Death"]], the eponymous robots' eyes are filled with red static when they prepare to kill.
** [[Recap/DoctorWhoS26E3TheCurseOfFenric "The Curse of Fenric"]]: Those possessed by [[EldritchAbomination Fenric]] gained blood-red eyes, but only after they had faded from their initial shade of dark green.
** [[Recap/DoctorWhoS27E3TheUnquietDead "The Unquiet Dead"]]: When the Gelth reveal their true colours as being hostile, the one speaking through Gwyneth changes from blue to red, starting with the eyes.
** When the usually-placid Ood get red eyes, it's a ''bad'' sign, though we later learn there's more to it than meets the, well, eye:
*** [[Recap/DoctorWhoS28E8TheImpossiblePlanet "The Impossible Planet"]]/[[Recap/DoctorWhoS28E9TheSatanPit "The Satan Pit"]]: They've been possessed by an entity claiming to be {{Satan}}.
*** [[Recap/DoctorWhoS30E3PlanetOfTheOod "Planet of the Ood"]]: Random Ood at Ood Operations are getting "red-eye" and killing employees with their translator balls [[spoiler:out of anger at the [[SlaveRace way]] they've been treated. The red eyes simply mean they're drawing on the telepathic field that connects them]].
*** [[Recap/DoctorWhos30E17E18TheEndOfTime "The End of Time"]]: Played with. This time, they're not getting violent, they're warning the Doctor that [[spoiler:"[[TitleDrop The End of Time]] itself" is imminent. The elder Ood's eyes take on the red glow when showing the Doctor visions of the future. He's drawing on the Ood's psychic network to do it, which is in fact the ''true'' meaning of the red eyes. Before, it had been hijacked by the "devil", while later it let the occasional Ood overcome the slave programming and fight back against the real villains. We see the red-eye mode in its totally non-dangerous natural form in "The End of Time". Russell T. Davies, showrunner at the time, actually considered "glowing red eyes = evil" to be a played-out cliché, so it's no surprise he didn't play it straight.]].
*** [[Recap/DoctorWhoS32E4TheDoctorsWife "The Doctor's Wife"]] averts it: The House's Ood servant Nephew is possessed by it, and dangerous, but his eyes glow ''[[SicklyGreenGlow green]]'' instead.
** Also from [[Recap/DoctorWhoS28E8TheImpossiblePlanet "The Impossible Planet"]]/[[Recap/DoctorWhoS28E9TheSatanPit "The Satan Pit"]], the only human that "Satan" managed to possess also gained blood-red eyes while the Beast was in control.
** The Siren from [[Recap/DoctorWhoS32E3TheCurseOfTheBlackSpot "The Curse of the Black Spot"]] turns not only her eyes, but the rest of her projected body from green to red when anyone gets between her and her victims.
** [[Recap/DoctorWhoS38E4NikolaTeslasNightOfTerror "Nikola Tesla's Night of Terror"]]: Most of the [[ScorpionPeople Skithra]] have glowing red eyes, which is the main signifier of their alien nature for those disguised as humans.
** [[Recap/DoctorWho2021NYSRevolutionOfTheDaleks "Revolution of the Daleks"]]: The Defence Drone Daleks' eyes turn red once the army of mutants cloned from the Reconnasaince Scout Dalek are unleashed and take control of their new casings. Not only that but they also shoot red lasers instead of the traditional blue.
* On ''Series/{{Farscape}}'', if a Delvian's eyes turn red, be moving in the other direction. It means they're going insane.
* In ''Series/{{The Flash|2014}}'', ComicBook/EobardThawne aka [[BigBad the Reverse-Flash]] can make his eyes glow red, coupled with a menacing VoiceOfTheLegion. Similarly, other speedster villains have coloured eyes as well, such as [[BlackEyesOfEvil Zoom's black eyes]] or [[GlowingEyesOfDoom Savitar's light blue eyes]].
* ''Series/GameOfThrones'': Euron Greyjoy's personal flag is the Greyjoy kraken sigil but with a red eye emblazoned across it.
* ''Series/GilligansIsland'' episode "The Pigeon". The castaways run into a Black Morning Spider. It's [[GiantSpider six feet long, weighs 500 lbs.]] and has red eyes.
* ''Series/{{Grimm}}'':
** We've seen Monroe's eyes turn red when he's upset, but not ready to go full GameFace in that situation. On the other hand [[WolfMan Blutbaden]] have this as a species trait as their eyes turn red with their GameFace.
** In the episode "Love Sick", after an enchanted Hank has sex with Adalind (a [[WickedWitch Hexenbiest]]), his sclera turns red, meaning that he's reached the point that only a drastic solution would save him.
* In ''Series/HouseOfAnubis'', once someone becomes a sinner, they obtain red eyes when they are feeling particularly "evil". It's merely for a second.
* Darien Fawkes of ''Series/TheInvisibleMan'' isn't evil, but he's prone to states of psychosis induced by the invisibility-causing gland in his brain; when he starts to flip out, his eyes go red. But when he gets to the point of no return, his eyes turn silver.
* Inverted with ''Series/KamenRiderKuuga'': Kuuga's [[SuperMode Ultimate Form]] having red eyes is a good thing, since it shows that Yusuke is in full control. When they turn [[SuperPoweredEvilSide black]], however, '''that's''' when you should start running. Similarly, in ''Series/KamenRiderOOO'', [[spoiler:Eiji's eyes turning purple (whether he's transformed into OOO or not) is a sign that the Purple Core Medals have taken over and he's about to [[TheBerserker go berserk]]]].
* ''Series/KamenRiderFourze''[='s=] BigBad was initially known as "The Red-Eyed Man", even in official in promotional materials, before they revealed his true identity: [[spoiler:Mitsuaki Gamou, the chairman of the high school attended by all the heroes]].
* ''Series/KamenRiderExAid'': [[TheHeart Emu]]'s eyes flash red when he shifts into his gamer self - [[PsychopathicManchild M]]. Also, when a victim of Game Disease gets glowing red eyes, it means that the [[TheVirus Bugster]] is taking over. Yes, these two things overlap.
* ''Series/KamenRiderBuild'': [[spoiler:Ryuga]][='s=] eyes glow red when he is stressed over having to helplessly watch his teammates get beaten nearly to death. It's because his emotions react with the remnants of the EldritchAbomination residing in him.
* ''Series/KamenRiderZeroOne'': [[RidiculouslyHumanRobots Humagears]]' eyes go from blue to red when they're infected by the villainous [=MetsubouJinrai.NET=]'s [[TheCorruption virus]] and [[FaceHeelTurn go berserk]]. In Episode 9 it's [[LampshadeHanging explicitly pointed out]] by TV pundits discussing the crisis, but this gets thrown out the window due to [[spoiler:A.I.M.S.' Yua Yaiba]] leaking footage of [=MetsubouJinrai=]'s Assassin to the media; because he was ''built'' evil and not reprogrammed, he has blue eyes all the time. [[spoiler:[=MetsubouJinrai=]'s Horobi and Jin are also evil Humagears without red eyes.]]
* In ''Series/{{Lucifer}}'', the [[{{Satan}} titular character]] has the tendency to show his true eyes to threaten or warn humans to not to cross him, with responses falling between [[VillainousBSOD astonishment]] and [[ScrewThisImOuttaHere panic]].
* ''Series/TheMandalorian'':
** In "Sanctuary", the title character has to take on an ex-Imperial AT-ST, and his first sight of it is the red light through its viewports shining through the darkness as it powers up. Bonus points for ShownTheirWork as cockpit lighting in real aircraft is generally red to prevent it from interfering with the pilot's night vision.
** In the Season 2 premiere, "The Marshal", the episode opens with Mando and the Child on a dark, urban planet walking under streetlights as small creatures with glowing red eyes watch them. After getting what information he needs from a guy who tries to kill him, Mando leaves the guy hanging upside-down from one of the lamps after promising that [[ExactWords he wouldn't die by Mando's hand]]. He shoots out the streetlight and leaves as the informant screams for help and the red-eyed critters start closing in on him.
* In ''Series/{{Merlin|2008}}'', Gaius realises that two visiting nobles are actually evil enchanters as he sees one's eyes flash red in a fit of anger. He really does take warning at the red eyes.
* In ''Series/TheMessengers'', an unidentified man has eyes that glow red. He is revealed to be Satan.
* ''Series/MightyMorphinPowerRangers'': Goldar's eyes are red and kinda glowy, Lord Zedd's visor is red, and the occasional monster has had red eyes.
* In an episode of the second ''Series/MissionImpossible'' series (1988), Mr. Phelps uses contact lenses that can glow red on command as part of a plan to convince his mark that he is the Devil.
* ''Series/NightGallery'' episode "Pickman's Model". The extremely evil ghouls are "more foul and loathsome than the putrid slime that clings to the walls of Hell". They eat human flesh, kidnap human women for procreation and have red eyes.
* ''Series/NowhereBoys'': The dogs under DemonicPossession. [[spoiler:People the demon possesses also show this, but only at first, for a couple of seconds.]]
* ''Series/TheOrville'', Some of the Kaylon have red eyes. The trope becomes [[Main/JustifiedTrope justified]] when it's revealed that many members of the species that built them had naturally red eyes. Possibly, their society saw nothing sinister in such a common eye color.
* ''Series/RedDwarf'': Victims of the holo-virus in "Quarantine", such as Dr.Hildegard Lanstrom and [[spoiler: Rimmer]], gain these when they are about to fire their [[EyeBeams hex vision]].
* ''Series/ScholarWhoWalksTheNight'': Gwi's eyes turn red when he's about to kill someone.
* Creator/RussellTDavies thought this was a clichéd trope, so specifically avoided it when writing ''Series/TheSecondComing'', where one of the characters is possessed by the Devil, but has silver eyes instead. However RTD found the trope was so prevalent the SFX people had automatically given the character red eyes, and they had to be changed to silver.
* ''Series/{{Smallville}}'':
** Davis Bloome gets these [[spoiler: when he's transforming into Doomsday]].
** Warrior Angel/Stephan Swift when [[spoiler:a curse turns him into Devilicus]].
* Randall Flagg in ''Series/TheStand'' miniseries.
* ''Franchise/StarTrek'':
** In ''Series/StarTrekEnterprise'', the Na'kuhl (or, as they are better known, the "Red Eye Aliens" or "Evil Alien Nazis") all have red eyes, clinching them as candidates for the most evil-looking aliens in the history of fiction.
** Jake Sisko and, later, Dukat temporarily develop glowing red eyes while possessed by the Pagh Wraiths in ''Series/StarTrekDeepSpaceNine''.
** In the ''Series/StarTrekTheNextGeneration'' episode called "Imaginary Friends" the titular girl, Isabella, gets red glowing eyes when she is upset when Clara leaves her at Troi's suggestion.
* In ''Series/{{Supergirl|2015}},'' the audience sees the D.E.O. boss, Hank Henshaw, with glowing red eyes. Combined with hints of him hiding something and his name belonging to a supervillain in the comics, do you want to bet he's up to no good? [[spoiler:{{Subverted|Trope}}: he's actually ComicBook/MartianManhunter, having stolen the real Hank Henshaw's identity]]. As noted on [[RedEyesTakeWarning/ComicBooks the comic books page]], when she or her cousin gets red eyes, then they're ''really'' pissed.
* ''Series/{{Supernatural}}'':
** Crossroads Demons. Other demons have similarly evil shades of white, yellow, or {{black|EyesOfEvil}}.
** As of Season 11, [[spoiler:Lucifer]] occasionally flashes red eyes as well. This is actually unusual, since he is an archangel, not a demon. Any time an angel's true form has appeared, it was simply a blinding white light.
* ''Series/TeenWolf'': Alpha werewolves' eyes turn red when they feel angry or predatory, even in human form. Once they shift, their eyes may glow outright. Also, Scott's yellow/gold eyes whenever he transforms.
* ''Series/TheTwilightZone1985'':
** In "I of Newton", the demon reveals his red eyes to Sam when he removes his sunglasses.
** In "Gramma", the title character, an extremely powerful witch, has glowing red eyes. Her grandson Georgie is even more terrified of her than he was before when he sees them. After Gramma [[GrandTheftMe takes over Georgie's body]], he exhibits the same red eyes.
* ''Series/TwoSentenceHorrorStories'': In "[[Recap/TwoSentenceHorrorStoriesS3E5Teeth Teeth]]" after changing into her vampire form, Olivia has red eyes.
* In the original ''Series/{{V 1983}}'' series, the Visitors' true reptilian forms had red eyes.
* ''Series/TheXFiles'', episode "Detour": [[MonsterOfTheWeek MOTW]] creatures Moth Men had glowing red eyes. Very scary.
* Continuing from the Film folder above, Wanda has red eyes when using her powers in ''Series/WandaVision''. One case is particularly notable in that they glow red [[SplashOfColor in a black and white monitor]].

[[folder:Music]]
* Music/TheSweet's "Ballroom Blitz" mentions this about the man in the back. "As a matter of fact, his eyes are as red as the sun." He's responsible for it turning into the titular ballroom blitz.
* Music/DavidBowie's "Film/CatPeople (Putting Out Fire)", written for the 1982 film, has a lovelorn man singing to an object of desire, warning her of the intensity of his need. The first verse establishes that his eyes are usually green, but they become red in the second verse:
--> ''"See these eyes so red\\
Red like jungle burning bright\\
Those who feel me near\\
Pull the blinds and change their minds."''
* The ''Music/PutinP'' series features the Music/{{Vocaloid}} Rin as its main character, whose eyes turn red when she reverts to Red Rin, a dangerous and {{Yandere}} part of her programming [[spoiler:that's actually resultant of a virus inserted into her]]. Camui Gackpo, contrary to his official design, also sports these, and attempts to kill Rin in his introduction. Len remarks on it during their showdown.

[[folder:Music Videos]]
* Music/{{Gorillaz}} bassist and MagnificentBastard Murdoc Niccals used to have one red eye and one black eye. The red eye appears to have turned black in recent pics, which may mean anything or nothing story-wise.
* In [[WebAnimation/MysterySkullsAnimated the animated video for Mystery Skulls' "Ghost"]], [[TeamPet Mystery]] has red eyes. It simply appears to be because of his ColorMotif being red at first, but later on [[spoiler:he's heavily implied to be a [[AsianFoxSpirit Kitsune]], and far more in the know than you'd expect. When this is revealed, his eyes [[GlowingEyesOfDoom glow red]]]].

[[folder:Mythology & Religion]]
* The eyes of cemetery statue "Black Aggie" are said to glow bright red in the middle of the night, either blinding or killing anyone who looks into them ([[http://www.snopes.com/horrors/ghosts/agnes.asp source]]).
* One {{Urban Legend|s}}[=/=]CreepyPasta talks about a man who stays at a hotel but is told to stay away from a certain room. Out of curiosity, he peeps through a keyhole and sees an apparently normal room, with a woman sitting against a wall. When she moves, he backs away and returns to his room. Later, he tries looking in again, but he can only see something red through the keyhole. Not able to stand the questions any longer, he asks the hotel clerk what's wrong with the room. She tells him that, years ago, a couple died inside, and they tended not to mention it to avoid upsetting guests. [[spoiler:She also mentions that the couple had unusually red eyes]].
* The UrbanLegends creature known as [[http://en.wikipedia.org/wiki/Mothman Mothman]] is said to have glowing red eyes.
* Most people associate red eyes with DemonicPossession and TheDevil.
* Many Inuit legends feature the [[https://en.wikipedia.org/wiki/Ijiraq ijiraq]], a shape-shifting creature that kidnaps children. No matter what shape an ijiraq shifts into, its eyes will always appear red.

[[folder:Pinball]]
* The antagonist in ''Pinball/{{Centaur}}'' has small red eyes, as if his bestial face, inhuman form, and dominatrix-inspired design didn't raise enough warning flags.
* Similarly, the monstrous ''Pinball/{{Varkon}}'' has round red eyes, which combine with his small fangs and rounded, brutish face to complete his MonstrousHumanoid appearance.
* In ''Pinball/{{Krull}},'' [[BigBad The Beast's]] red glowing eyes can be seen o both the backglass and the lower-level playfield.
* ''Pinball/AvengersInfinityQuest'': Getting a tilt warning displays an image of ComicBook/{{Thanos}} with glowing red eyes, tying into his role as the game's BigBad while also visually dissuading the player from playing rough with the machine.

[[folder:Professional Wrestling]]
* Ojo Diabolico Jr's ThirdEye has a red pupil. His XMW TagTeam partner Ludark Shaitan {{invoke|dtrope}}s this trope by painting pink circles around her eyes.

[[folder:Theatre]]
* ''Theatre/CharlieAndTheChocolateFactory'': In the 2017 Broadway retool, the squirrels' eyes glow yellow at first, but then glow red as they [[spoiler: tear Veruca apart]].
[[/folder]]

[[folder:Theme Parks]]
* Franchise/TheHauntedMansion: In Phantom Manor (the Paris incarnation), the Phantom's eyes glow red at passing riders both times that you pass up close to him (after leaving the Bride's Boudoir, and when leaving Phantom Canyon).
[[/folder]]

[[folder:Films -- Live-Action]]
* The Infected in ''Film/TwentyEightDaysLater'' have red eyes. They're also ''very'' aggressive.
* The HAL 9000 computer in ''Film/TwoThousandOneASpaceOdyssey'' uses cameras with glowing red lenses to watch the crew of the Discovery.
* A rare yellow-colored variation of this trope happens at the end of ''Film/AngelHeart'' [[spoiler: when LouisCypher is telling Harry Angel that he was the missing cannibal serial killer Johnny Favorite and that Johnny's (And therefore, Harry's) soul is his, for a brief couple seconds, his eyes turn yellow]].
* In ''Film/Apollo18'', one of the symptoms of the parasite infection is a red ring around the host's irises.
* ''Film/BloodRansom'': In the second half of the movie, Crystal gains the ability to turn her irises red on command and the vampirism progresses.
* ''Film/{{Brightburn}}'': Brandon's eyes turn red when he's about to use his laser vision.
* In ''Film/ChildsPlay2019'', Chucky (and presumably, any other Buddi doll, although we don't see it) does this whenever acting beyond his programming.
* The demonic halfbreeds in ''Film/Constantine2005''.
* ''Film/{{Cthulhu}}'': "Do it, Russell! Make sacrifice! Look into the red eye of your god!"
* ''Film/DarkAngelTheAscent'': Veronica's eyes turn red every time she gets angry, revealing her true nature as a demon.
* In ''Film/{{Dreamscape}}'', the SavageWolves chasing Alex and the President in the final dream sequence have red GlowingEyes.
* ''Film/TheFog'': Blake, the leader of the murderous zombie ghosts, has red GlowingEyesOfDoom.
* Vampires in ''Film/FrightNight1985''. Jerry Dandridge and Amy Peterson in their humanoid forms, Jerry Dandridge in bat form, and "Evil" Ed Thompson in wolf form all have red eyes. Film/HammerHorror vampires often have red -- or rather, very bloodshot -- eyes.
* ''Film/Ghostbusters1984'':
** Gozer's dog demons Zuul and Vinz Clortho both have glowing red eyes.
** After Tully is possessed by one of the dog demons, his eyes flash red when he becomes angry. Dana Barrett's eyes also become red after she is possessed.
** While in his female human form, the evil deity Gozer the Gozerian has red eyes.
* ''Franchise/{{Godzilla}}'':
** Monster X in both forms in ''Film/GodzillaFinalWars''.
** In ''Film/GodzillaTokyoSOS'', the title character tries to charbroil Mothra's newly borne twin larvae with his atomic breath. Mothra [[HeroicSacrifice jumps in front of her children to save them]] and is promptly [[KillItWithFire set alight]] for her troubles. She explodes and, at that point, her children's eyes turn from a benevolent blue to a hellish red and they proceed to team-up with Mechagodzilla to beat the hell out of Godzilla.
** Space-Godzilla has glowing, red, eyes with [[HellishPupils cat-like slits]] as opposed to Godzilla's fiery, human-like ones.
** Others include [[KnightTemplar Battra]], [[BlobMonster Hedorah]], [[CyberCyclops Gigan]] and [[EldritchAbomination King Ghidorah]].
** The [=MUTOs=] in ''Film/Godzilla2014'' have red glowing slits for eyes, which lack any kind of pupils. They may be heat sensors or compound eyes.
** Ghidorah in ''Film/GodzillaKingOfTheMonsters2019'' has beady, bright-red eyes that [[GlowingEyesOfDoom glint in the dark]].
* Mogwai in the ''Film/{{Gremlins}}'' series when they've eaten after midnight and become evil.
* Voldemort in ''Film/HarryPotterAndThePhilosophersStone'', staying true to the original story. Later [[Film/HarryPotter films]] were much less accurate, giving him CreepyBlueEyes. According to the creative director this was to give an UncannyValley effect as Voldemort is more appalling if there's still a trace of humanity in his face. This idea works, especially in ''[[Film/HarryPotterAndTheGobletOfFire Goblet of Fire]]''.
* ''Film/{{Horrific}}'': In ''Crypt of the Undead'', the undead executioners have red eyes, as does anyone possessed by the ghosts of the witches.
* In ''Film/HorrorExpress'', whoever [[spoiler:the alien]] possesses or [[spoiler:has zombified]] is noted with glowing red eyes when the train cars are dark. [[spoiler:The effects that go with this go away in the light.]]
* In ''Film/IBoughtAVampireMotorcycle'', the demon-possessed killer motorbike's headlight glows red when it's active.
* It's not the eyes, but the robots in ''Film/IRobot'' turn on a red chest light when being controlled by the villain. {{Justified|Trope}}: it's explained that the red light indicates when a robot is downloading a firmware update from US Robotics. [[spoiler:VIKI uses this connection to upload her (twisted) logic and understanding of the Three Laws into the consumer-model NS-5's.]]
* In ''Film/JudgeDredd'', the deadly ABC robot controlled by Rico has glowing red eyes.
* The Indominus Rex in ''Film/JurassicWorld''.
* ''Film/TheLeagueOfExtraordinaryGentlemen'': Mina Harker gains red eyes when she lets her inner vampire out.
* ''Film/LittleDeadRottingHood'': [[spoiler:Officer Victoria]]'s eyes glow red to signy [[spoiler:her turning into the Denmother]].
* As well as [[BigBad Sauron]] in ''Film/TheLordOfTheRings'', being a flaming red eyeball himself, the black horses of the Ringwraiths have glowing red eyes.
* ''Film/ManOfSteel'':
** [[spoiler:Zod in the final battle, when he cuts loose with his full set of Superman-like powers -- including [[EyeBeams heat vision]].]]
** {{Inverted|Trope}}, as when Lois first sees Clark in the cave, his eyes are glowing red as well. He soon [[spoiler:cauterizes her injury with his heat vision]].
* ''Franchise/MarvelCinematicUniverse'':
** ''Film/IronMan2'': The Mk II eyes light up blue like all Iron Man suits -- as War Machine, they are red.
** ''Film/{{Thor}}'': The Frost Giants have blood-red eyes, and it's the only other color they have on their icy blue bodies. Loki also gets red eyes and blue skin when he touches the Frost Giants' source of power, showing he's one of them, but this is never brought up again.
** ''Film/IronMan3'': The [[PsychoSerum Extremis]] virus turns the eyes of whoever been injected with it, [[https://vignette.wikia.nocookie.net/marvelmovies/images/1/18/ExtremisAsian-IM3.png/revision/latest/top-crop/width/320/height/320?cb=20131220052925 glowing red]]. In fact it's the red eyes that is first real indication to Happy Hogan that Savin is up to no good.
** ''Film/ThorTheDarkWorld'': those who are under the influence of the Aether [[spoiler: aka Reality Stone]] have their eyes turn dark red. Similarly using the Power Stone in ''Film/GuardiansOfTheGalaxy'' turns the user's eyes [[PurpleIsPowerful purple]], the Mind Stone [[Film/TheAvengers2012 blue]], etc.
** ''Film/AvengersAgeOfUltron'': Ultron has red GlowingEyesOfDoom along with his horde of robotic {{Mooks}}.
** ''Film/AntMan1'' and ''Film/AntManAndTheWasp'': Subverted by Hank Pym, Scott Lang, Janet and Hope van Dyne. They have red lenses in their Ant-Man or Wasp helmets, but they're quite a nice bunch.
** ''Film/GuardiansOfTheGalaxy2014'': The movie opens with a sinister figure in a full-face helmet with glowing red eyes strolling across a DeathWorld. Then he [[CollapsibleHelmet collapses his helmet]] to reveal it's just Peter Quill.
** Yondu's eyes are red, which, similar to the Frost Giants, contrasts with his blue skin. We get a nice closeup of them during ''Film/GuardiansOfTheGalaxyVol2'' when he's using his arrow to kill dozens of mutineering Ravagers.
** ''Film/SpiderManHomecoming''; Spidey's suit has a ''Instant Kill Mode'' which turns the normally wide white eyes of Spider-Man into [[https://78.media.tumblr.com/33fd6865fa7adc8e00016017973768df/tumblr_owwaxuTbcs1rc44lao5_540.gif small red glowing pupils]]. Peter, who follows the ThouShaltNotKill rule, takes issue with it. He then gets to use it in ''Film/AvengersEndgame'' to decimate Thanos's Outriders.
** Wanda Maximoff's corneas turn red when she casts her magic, and also glow when she's angry. Wanda's victims' eyes also turn red when she's [[MindControlEyes hexing them or]] [[MindRape outright possessing them]]. And nowhere it's more apparent than in ''Film/DoctorStrangeInTheMultiverseOfMadness'', where Wanda [[JumpingOffTheSlipperySlope gave into darkness to become a]] {{Fallen Hero}}ine and thus the red eyes are often PlayedForHorror.
* ''Film/TheMask'': When the criminal Dorian Tyrell puts on the magical mask of Loki and his massively evil hidden dark side comes out, his eyes become red.
* ''Film/TheMatrix'': The Sentinel "search and destroy" robots (which threaten the humans in the real world throughout the trilogy) have multiple glowing red eyes.
* Although we never actually get to see their real eyes, the glowing red goggles of the Red Eyes gang in ''Film/MysteryMen'' seem to reflect this trope.
* This happens to Falcor in ''Film/TheNeverEndingStory 2'', when he refuses to carry the sorceress Xayide.
* Freddy Krueger had a hellish pair in ''Film/ANightmareOnElmStreetPart2FreddysRevenge''. Subsequent films gave him normal looking ones, though.
* ''Film/Oblivion2013'': You didn't expect the HAL 9000-eyed drones to be up to any good, did you?
* ''Film/OneHourPhoto'' has Robin Williams in a calm dream sequence, but when he opens his eyes, [[spoiler:they are blood red and [[TearsOfBlood some blood trickles out of one]]. He then puts his hands on his eyes, screaming out "AAAAHHHHHHH!" while blood flies all over the place from his eyes]].
* Film/{{Popeye}} and a very late Olive Oyl in TheMovie carrying the newly discovered [[DoorstopBaby Swee'Pea]] at the door of Olive's house after being late for a date with Bluto=big trouble. Bluto, seething with anger, sees Popeye, Olive, and the baby through red eyes, pummels Popeye into the ocean below, and, in the next scene, persuades the taxman to tax the prestigious Oyl family into bankruptcy as revenge.
* In ''Film/TheSchoolForGoodAndEvil2022'', Sophie, who is being corrupted towards evil, is shown with glowing red eyes as an unseen figure cradles her face.
* {{Subverted|Trope}} in ''Film/{{Spaceballs}}''. When [[Film/{{Alien}} the baby xenomorph bursts out of John Hurt's chest]], it has red eyes, but it immediately goes into its "[[WesternAnimation/OneFroggyEvening Michigan J. Frog]]" number and dances away.
* ''Franchise/StarWars'': The "Sith eyes" seen on Darth Sidious, and later Darths Maul and Vader in the prequels (technically gold rimmed and flecked with red, but it still counts) Maul is shown to have them all the time, but he's not human and his eye color is never seen while he's doing anything but hunting the heroes and fighting. Vader is only seen with them when he's feeling particularly "eeevil." Sidious' eye color, on the other hand, switches between Sith gold and their original blue depending on whether he is being his evil self or masquerading as a benevolent politician. Ultimately, his eyes become gold-red permanently after his grueling duel with Mace Windu.
** This trope is applied sometimes with Count Dooku, a.k.a. Darth Tyranus, who is seen with Sith eyes few times in animation and novels but not in the prequel movies.
** The eyes of Cad Bane from ''[[WesternAnimation/StarWarsTheCloneWars The Clone Wars]]'', the Nemoidians and Grand Admiral Thrawn may fit this trope better on a superficial level (being pure red), but this is only because that's the natural eye color of their respective races -- not Sith sorcery.
** In the theatrical version of ''Film/ANewHope'', Vader's eye lenses had a dull reddish tint to them due to the materials used. It probably wasn't intentional, due to the fact that later edits removed the reddishness in order to hide Creator/DavidProwse's eyes. However the red lenses are brought back in ''Film/RogueOne'' and they [[https://cdn.vox-cdn.com/thumbor/9-LrKQGzeyc32oNUoE-rG-AP3qU=/0x0:612x306/1200x800/filters:focal(231x79:327x175)/cdn.vox-cdn.com/uploads/chorus_image/image/52403587/vaderrogueone.0.jpeg look great]].
** Played with in ''Film/{{Solo}}'' when Qi'ra contacts the previous unseen leader of [[TheSyndicate Crimson Dawn]], [[spoiler:revealed to be Darth Maul. While she doesn't have them herself, the glow of Maul's red lightsaber reflects on her eyes, giving them a red color, symbolising her decision to stay with Crimson Dawn rather than escape with Han]].
** In ''Film/TheRiseOfSkywalker'', ''C-3PO'' of all characters briefly has red ominous glowing eyes and speaks in a harsh deep voice when he is forced to translate a message in the [[BlackSpeech Sith language.]]
* The older "ghost" in ''Film/TheStoneTape'' first appears as a pair of glowing eyes hovering in the darkness. Then to show how inhuman it is one eye begins to ''orbit'' the other as it approaches the heroine.
* In ''Film/TeenWolf'', Scott's eyes flash red and his voice drops to an evil growl to intimidate the hard-ass old man into selling him a keg of beer.
* Most of the Terminators from, well, the ''Franchise/{{Terminator}}'' franchise have [[GlowingEyesOfDoom glowing red eyes]], which become even more obvious when only their endoskeletons are showing.
* The Hood, the villain of the live-action ''Film/{{Thunderbirds}}'' film, has these when he uses his psychic powers. His heroic niece, Tintin, has SupernaturalGoldEyes in contrast, when she uses her powers.
* The Japanese stranger from ''Film/TheWailing'' usually looks like a normal old man, but when hunting in the wild he is pictured with red eyes (and also almost completely naked).
* ''Film/WhoFramedRogerRabbit'': The Toon that killed Eddie Valiant's brother had "burning red eyes" and a CreepyHighPitchedVoice. That toon is later revealed to be [[spoiler: Judge Doom]].
-->'''[[spoiler:Judge Doom]]:''' REMEMBER ME, EDDIE?! WHEN I KILLED YOUR BROTHER, I TALKED '''[[PunctuatedForEmphasis JUST! LIKE! THISSSSSSSSSS!]]'''
* ''Film/TheWizardOfOz'': In the Haunted Forest, Dorothy and her companions see two evil owls and two vultures. All of these birds have glowing red eyes.
* Bishop in ''Film/XMenDaysOfFuturePast''.
* ''Film/YoungSherlockHolmes'': When the gargoyle in the shop starts to animate, its eyes glow red.
[[/folder]]

* In ''Webcomic/{{Archipelago}}'', when someone makes [[DealWithTheDevil a deal with the Great Raven,]] their left eye is turned black with a red pupil.

* In ''WesternAnimation/StarTrekLowerDecks'' it was revealed that the Tamarian expression for "Oh, crap!" is "Zinda, his eyes red!"

Not to be confused with the film ''Film/RedEye'' or the liquor. Sometimes a part of BurningWithAnger, and thus a harbinger of wrath from the SevenDeadlySins wrath.

* ''Webcomic/TheFoxSister'': The [[FantasticFoxes Kumiho]] loves this one.

* ''Film/TheFog1980'': Blake, the leader of the murderous zombie ghosts, has red GlowingEyesOfDoom.

* ''WesternAnimation/ThePowerpuffGirls'' (and its [[Anime/PowerpuffGirlsZ anime]] counterpart) gives us Brick of the [[ThePsychoRangers Rowdyruff Boys]]. True to this trope, Brick loves to [[ChaoticEvil cause destruction and hurt others]].