[[quoteright:350:[[Manga/BlackLagoon http://static.tvtropes.org/pmwiki/pub/images/blvi2_1925.png]]]]
[[caption-width-right:350:Yes, they're [[CreepyTwins twins]]. This is one of their ''less'' disturbing aspects.]]

->''"We like our villains like we like our Literature/BookOfGenesis: with implied incestuous relationships."''
-->-- ''Website/{{Cracked}}''

So you have a character who is a villain. He's [[KickTheDog kicked puppies]], [[ColdBloodedTorture tortured defenseless kittens]], and done everything he can to make sure he has thoroughly crossed the MoralEventHorizon. What else can you do to show the audience that he is absolutely evil in every way?

You have him break sexual taboos and engage in certain "taboo" or borderline activities which are frowned upon by many cultures. Sure, EvenBadMenLoveTheirMamas, but some bad men love their mamas a ''little'' too much, and this can be meant to add to the audience's view of the villain as a disgusting, depraved individual who commits evil and [[GoodPeopleHaveGoodSex "unnatural"]] acts on a daily basis.

This exploits a specific primal instinct-based sex taboo, and is specifically based on the equating of breaking taboos with evil. When averted, this is presented as EvenEvilHasStandards. The latter can and does come across not as a mere ValuesDissonance, but as outright {{Hypocri|te}}sy, resulting in a BrokenAesop. Many cultures have world/humanity {{Creation Myth}}s involving [[BrotherSisterIncest/{{Mythology}} divine incest]] (and human incest, if the myth involves a few early humans giving rise to all of humanity), highlighting a moral dissonance between the primal and the religious.

Compare/contrast BrotherSisterIncest, {{Twincest}}, ParentalIncest, KissingCousins. Can cross over with FreudianExcuse if it's implied to be rooted in child abuse. May be part of a RapeAsBackstory scenario, either for the villain themself, or whichever relative(s) were involved. If children result, expect them to be InbredAndEvil.



[[folder:Anime & Manga]]
* Pictured above: [[CreepyTwins Hansel and Gretel]] from ''Manga/BlackLagoon''. It's with each other, and they're kids-- and yet this is one of the ''[[TroublingUnchildlikeBehavior least disturbing things]]'' about them.
* ''Anime/PantyAndStockingWithGarterbelt'':
** Demon sisters Scanty and Kneesocks apparently enjoy partaking in strange sexual play involving [[NoodleImplements caviar, figs and goat milk]] when the mayor isn't looking.
** But, the protagonist angel sisters are also hinted to be ''very'' close at one point (looking forward to bonding over Panty's sex tape).
* ''Anime/RevolutionaryGirlUtena'':
** [[spoiler:Akio Ohtori]] regularly has sex with [[BrotherSisterIncest his sister]] [[spoiler:Anthy Himemiya]]. [[spoiler:It's both an example of this trope, and an allusion to their nature--incest is rather common among many cultures' gods.]]
** [[spoiler: Miki and Kozue]] may do the same during their car ride, and [[spoiler: Touga and Nanami]] very nearly do; at best, it's a rather blunt metaphor about each girl's relationship with men now that they've begun puberty. Interestingly enough, [[spoiler:Nanami]], the girl who has harbored a very blatant (and often sexual) crush on her brother, is absolutely horrified when she discovers that [[spoiler:Anthy and Akio]] are intimate. And during her own car ride with her brother she reacts with disgust and punches him away when he makes a move on her.
* Alexis and his sister Augusta in ''Manga/CountCain''.
* In ''Manga/ElfenLied'', [[spoiler:Director Kakuzawa's master plan involves [[MonsterProgenitor Lucy]] creating offspring with her [[ChildByRape half-brother]]. [[OffWithHisHead It ends about as well as you'd expect]]]].
* Auguste Beau of ''Manga/KazeToKiNoUta'' uses sex to control and manipulate [[spoiler: his son, Gilbert]].
* Sorath and Tiriel from ''LightNovel/ShakuganNoShana'', stunning Shana in the process.
* The creepy twins Yui Fan and Yui Lan from ''LightNovel/FullMetalPanic: The Second Raid''.
* Dr. Hagen and his sister Nina in ''Anime/AgentAika''. Interestingly, she was the creepier one in that pairing.
* The Black Beauty Sisters in ''Manga/MermaidMelodyPichiPichiPitch'' are almost certainly a couple, but it's never made clear whether they're actually sisters or not.
* The Long twins from ''[[http://www.animenewsnetwork.com/encyclopedia/anime.php?id=89 Twilight Of The Dark Master.]]'' Taken to a whole new level of creepy (or hilarious) when you find out that their voice actors in the dub are ''husband and wife.''
* Played for laughs in the ''[[Manga/BlackButler Black Butler Hamlet]]'' OVA, when Grell/Ophelia gets the hots for Agni/Polonius. Agni thinks it's disgusting, even if he's not related to Grell.
* While never explicitly stated in the manga version of ''Manga/ChronoCrusade'', this is hinted at with two separate villains.
** Once Joshua gets Chrono's horns, his resulting insanity causes him to become VERY obsessed with his older sister Rosette, going so far as to tell her once they meet again that he'll destroy ''anyone'' that would separate them again. (Understandably, Rosette is horrified at this suggestion.) He also mistook his maid Fiore for his older sister when they first met, and she's later hinted to be something of a love interest for him, and even asks him to call her "sister" again before [[spoiler:they part for the last time]].
** [[spoiler:Aion]] is generally not shown to be interested in romantic relationships, he's very obsessed with [[spoiler:his twin brother, Chrono]]. He's described as "not being the same" after they parted ways by other characters, and in a flashback he describes the sight of [[spoiler:his brother]] covered in blood as "beautiful." He also appears to be kissing the ''decapitated head of his mother'' in one scene near the end of the manga.
* ''Anime/KillLaKill'' has Satsuki's mother Ragyo, who molests her daughter on a regular basis. If the flashbacks are anything to go by, this has been going on for a ''long'' time. And there is the [[NeverLiveItDown infamous]] [[FanNickname 'Bath Scene']], which serves to establish Ragyo as the main villain and to show part of Satsuki's FreudianExcuse [[spoiler:and [[HeelFaceTurn shift to the protagonist side]]]]. Later in the series, [[spoiler:she does the same to her long-lost other daughter, Ryuko]]. And in the same episode we find out that Nui Harime, who is practically Ragyo's foster daughter was also molested by her (although she is the only one who doesn't seem to mind).
* Even though ''Manga/VampireKnight'' establishes that pure-blood vampires interbreed, Yuki and Kaname's uncle definitely qualifies. He projects his feelings for his late sister onto his teenage niece. Talk about creepy.
* Johan Liebert from ''Manga/{{Monster}}'' is one of the worst examples in this folder. Despite his twin sister trying to kill him when they were kids, he has unnatural feelings for Anna/Nina. He started stalking her, leaving her love notes, and buying gifts for her. She doesn't feel the same way, obviously, and is more than eager to shoot him again if he were to come near her.
* The behavior exhibited by Maestro Delphine from ''Anime/LastExile'' toward her younger brother Dio hints at her having incestuous feelings toward him, though this is never made explicit.
* In ''Manga/MagiLabyrinthOfMagic'', Gyokuen married her brother-in-law after her first husband died (considered incest by many ancient cultures) and once her second husband died, she became [[http://www.mangahere.co/manga/magi/v12/c147/4.html uncomfortably touchy-feely]] to her nephew/stepson first prince Kouen, to the shock and disgust of her other children. Kouha remarked that she was always very fond of Kouen and now decided to move on from her husband (Kouen's father) to Kouen himself.
* Marube from ''Manga/{{Yuureitou}}'' molests his daughter Satoko and is incredibly overprotective of her. He said when she turned twenty he planned on taking her virginity, though [[spoiler:after learning it's unlikely he's her [[NotBloodRelated biological father]]]], she ran away. Later he tries to have sex with [[spoiler:Tetsuo]], his biological son.
* In ''Manga/TokyoGhoul'', a BreedingCult engaging in incestuous relations proves to be a major piece of the dark puzzle. Namely, [[spoiler: Rize Kamishiro is an escaped BreedingSlave that was destined to be raped and forced to bear children to her own biological father, [[HunterOfMonsters CCG]] chairman Tsuneyoshi Washuu. Her half-brother, Furuta, turns out to be a {{Yandere}} that wants to replace their father, marry her, and use her as his personal BabyFactory]].

[[folder:Comic Books]]
* An obscure Franchise/MarvelUniverse character from the equally obscure ''ComicBook/CometMan'' series knowingly started dating his estranged and unwitting sister as part of a plan to revenge himself on his entire family. While sex was never made explicit, they had moved in together for some weeks before his relationship to her was revealed.
* Andrea and Andreas Strucker, the Fenris twins of Creator/MarvelComics, derived their power from being in constant physical contact with each other. And then it got {{squick}}ier after Andrea died. Technically their incest was never confirmed, and Andreas denied it at one point (well, that's not surprising). But the implications are incredibly strong.
* Baron Mordo, archenemy of Comicbook/DoctorStrange, knowingly had a sexual relationship with his Romani half-niece (she was unaware of the relationship) which ultimately resulted in a daughter. Just to make it worse, Mordo seduced her to steal the Book of Cagliostro, a book of spells, and then abandoned her.
* While it was implied throughout the franchise that the family ''may'' have been committing incest, the comic ''Franchise/TheTexasChainsawMassacre: Raising Cain'' outright stated it. After one family member's wife is killed (in part, by him) he nonchalantly states he has plenty of other sisters he can marry, also indicating he and the rest of the family [[CrossesTheLineTwice are going to eat the dead one]] ("Meat should never go to waste!")
* Quicksilver and Scarlet Witch are in a long term relationship with each other in the ComicBook/UltimateMarvel universe, possibly based on an earlier {{meme|ticMutation}} originating in the original comic universe. So much so to the point where Pietro actually gets jealous when Wanda hits on a robot. Although the two of them are more AntiHero with AntiVillain moments as opposed to out and out villains.
* In Creator/AlanMoore's ''Comicbook/SwampThing'', Abby is unknowingly seduced by her own uncle, the uberevil villain Dr. Anton Arcane.
* ''ComicBook/StrangersInParadise'' has Darcy and, yes, [[spoiler:David]].
* ''Many'' of the villains in ''ComicBook/SandmanMysteryTheatre'' are incestuous in one way or another, to the point where you start to wonder about the writer…
* In the BadFuture of ComicBook/{{Wolverine}}'s "ComicBook/OldManLogan" arc, [[Comicbook/IncredibleHulk Bruce Banner]] has made a FaceHeelTurn and sired the Hulk Gang with his cousin Comicbook/SheHulk.
* The ''Comicbook/SinCity'' short story entitled ''Daddy's Little Girl'' has a rather disturbing example of this. [[spoiler:A woman seduces a man but claims that her father does not approve of the relationship, eventually asking him to shoot him. It turns out that the whole thing was a setup. She was sleeping with her father and he apparently [[NightmareFetishist gets off by killing people before sleeping with his own daughter]].]]
* The gods are naturally featured in ''Franchise/WonderWoman''. Mentioned is their habit of boinking their blood relatives.
* Franchise/TheFlash villain Ragdoll (Peter Merkel) is heavily implied to have sexually abused his daughter, Alex. Later on, it appears that his son Peter Jr. and Alex (both now villains themselves) partake in an incestuous relationship themselves, although a consensual one.
* In the ComicBook/SpiderMan and ComicBook/BlackCat miniseries ''The Evil That Men Do'', Francis Klum outright states that his big brother Garrett sexually abused him for years, to the point where Francis became unable to enjoy consensual sex, which led to his discovering his mind-control abilities.
* In ''ComicBook/{{Runaways}}'', it's never been outright stated that Molly's evil parents were an incestuous couple, but they ''do'' happen to have the exact same powers and their mutations manifested in exactly the same way, which is, if not impossible, extremely rare with mutants who are not biologically related. The 2017 series revealed that they were foster siblings that got their powers through experimentation by Alice's mother, at least according to said mother.
* Jason and Cheryl from ''ComicBook/AfterlifeWithArchie'' are involved in {{twincest}}. It's implied to not be 100% consensual on Cheryl's side. As a child Jason was very clingy towards Cheryl to the point of [[spoiler:killing her puppy in jealousy]] and as a teenager he is very overprotective of her and gets jealous very easily.
* ''ComicBook/{{Vampirella}}'': After Pixie Fattonie is turned into a vampire, one of the first things she does to show how [[TranshumanTreachery she's lost all humanity]] is to molest her sister Dixie in front of a crowd of vampires.

[[folder:Fan Works]]
* ''FanFic/InnerDemons'': You know the subtle IncestSubtext that exists between [[WesternAnimation/MyLittlePonyFriendshipIsMagic Twilight Sparkle and Shining Armor]] in canon? Well, after being consumed by her [[EnemyWithin Queen persona]], Twilight stops bothering with either subtlety ''or'' subtext, to the point that she [[spoiler: imprisons and impersonates Cadence in order to sleep with Shining Armor]]. And when Shining Armor rejects her advances and sides with the protagonists, Twilight has a full-blown VillainousBreakdown and attempts to [[MurderTheHypotenuse kill Cadence]] in a jealous rage.
* In the ''Fanfic/OneiroiSeries'', a ''[[Webcomic/TheOrderOfTheStick Order of the Stick]]'' series of fanfics, [[SplitPersonalityTakeover Deirdre]] [[spoiler:[[MoralEventHorizon rapes and kills her father, gets pregnant by him, and then manipulates her brother into having sex]]. Most of the other villains think that she's going to do the same to her uncle, too]].
* In ''[[http://percyjacksonfanfiction.wikia.com/wiki/Stand_In_The_Rain Stand In The Rain,]]'' a ''Literature/PercyJacksonAndTheOlympians'' fanfiction, [[spoiler:the main character is raped by her mentally disturbed half-brother]]. FromBadToWorse--[[spoiler:she gets [[ChildByRape pregnant]]. With her own brother's baby]].
* There is a ''VideoGame/PokemonDiamondAndPearl'' CrackFic in which Saturn and Jupiter have sex regularly even though they're [[KissingCousins cousins]]. Mars also mentions having once had sex with her ''brother,'' which she thinks of as okay because the ancient Egyptians used to do it. Granted, none of them actually do anything all that evil, except under Cyrus's orders.
* ''FanFic/TheImmortalGame'': [[BigBad Titan]], having taken over Equestria, attempts to force his daughter Luna to marry her brother Empyrean in order to solidify the latter's position as rightful acting ruler. [[spoiler: It's also later revealed that his wife Terra is actually his daughter as well.]]
* Given the fact that most ''Series/WizardsOfWaverlyPlace'' fics are focusing on [[BrotherSisterIncest Justin/Alex]], many of them portray their relationship as wicked and harmful, and few have {{happy ending}}s.
** In ''[[http://www.fanfiction.net/s/6431324/1/Perfect_Lies Perfect Lies]]'', Justin has a calm life, a four years old daughter and a loving wife. Then Alex comes and creeps in, destroying it slowly, by alluring him into having sexual affairs with her. And [[EvilTastesGood she enjoys it]].
* Rather a lot of ''Literature/HarryPotter'' fanfiction, and for good reason. As noted below, the purebloods are absolutely obsessed with keeping their lineage "pure", untainted by {{Muggle|s}} blood. There's also not that ''many'' of them, so sooner or later they're going to have to resort to [[KissingCousins first cousins]], or [[BrotherSisterIncest worse]]. And some of Voldemort's followers are easily bugfuck nuts enough that they might actually be okay with this!
* In ''The Awakening of a Magus'', it is mentioned that a demon descended line to which Voldemort belongs (along with [[DracoInLeatherPants Draco and Snape]]; the line doesn't make you automatically evil) once gave birth to twins (normally, those imbued with the demon's power are only born a few decades apart). These twins became lovers, seeing no one else as a proper partner. Eventually, they gave birth to a child so evil that he manipulated them both into killing each other, and then established a Death Eaters like band. The main reason they didn't come to rule is that the child decided to take a different path--[[spoiler:him and his followers became the Dementors]].
* Much ''Anime/CodeGeass'' fanfic, especially [[AlternateUniverse AUs]] where Nunally and Lelouch are never banished, take the [[MemeticMutation Britannincest]] subtext to the next level. Schneizel/Cornelia, Cornelia/Euphemia, Euphemia/Lelouch, Lelouch/Nunally, and Schneizel/Lelouch are all very popular.
* ''FanFic/{{Hivefled}}'': The Grand Highblood and the Condesce went out of their way to have children and track them down, against the social norms of their species (who usually never know their offspring), purely for this purpose.
* ''Fanfic/HigherLearning'': Details are not given, but in the original pre-PeggySue timeline, the first one of Shinji and Asuka's kids to demonstrate [[RealityEnsues the logical consequences]] of an AdamAndEvePlot was ''also'' the one who ended up [[SelfMadeOrphan murdering his mother.]] [[spoiler:Time-traveller Kaoru "Mizayaki" is this individual's child by his sister.]]
* Used in the ''Disney/TheLionKing'' fanfic, ''[[https://www.fanfiction.net/s/3876945/1/Nala-My-Father-s-Madness Nala: My Father's Madness]]''. After [[spoiler:Sarafina's death]] Scar tries to seduce Nala due to the fact Zira hasn't given him a suitable enough heir (Nuka is sickly). Nala refuses. When it's revealed that Scar is her father, the lioness' are disgusted when Zira claims Scar tried to make his own daughter his queen. Scar tries to claim that he [[ThoroughlyMistakenIdentity mistook Nala]] for her mother [[spoiler:in his grief]] due to their StrongFamilyResemblance, however no one believes him. Nala is also bethroted to her half-brother Nuka, though this is presented negatively due to their age gap and relationship. Scar doesn't care though and won't annul the engagement.
* In the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' parody series ''WebVideo/FriendshipIsWitchcraft'', [[spoiler: VillainProtagonist Twilight Sparkle]] cements her place as the BigBad of the series by sabotaging her brother's wedding, imprisoning his fiancee in a cave and leaving her to die, and [[spoiler: marrying her brother herself.]] She tries to justify her crush [[spoiler: and marriage]] to her brother by saying they are NotBloodSiblings. It's still pretty creepy [[EvenEvilHasStandards even according to Fluttershy]]. And before anyone asks, by all appearances her brother has been brainwashed into going along with it.
* [[http://archiveofourown.org/series/347432 This]] ''Film/{{Descendants}}'' fanfic series features [[Disney/{{Cinderella}} Anastasia's daughter and Drizella's son]] as a couple, and they're among the numerous [=VKs=] that help our main characters take over Auradon.

* Eleanor Prentiss Shaw of ''Film/TheManchurianCandidate'' (known in the novel as Eleanor Iselin). Both film versions show Eleanor coming onto her son Raymond, whose consent is dubious given his brainwashing, and the novel on which it was all based includes frank mentions of [[spoiler:consummated incest, both between Eleanor and her father Tyler and between Eleanor and Raymond]]. Eleanor figures as a villain in both the novel and the original film version. In the remake, she's a likable character who does horrible things with good intentions, and in all three works the incestuous element is definitely used to enhance her creepiness.
* Commodus from ''Film/{{Gladiator}}'' had a sister complex. The sister in question, Lucilla, was not into it. It also seemed to be rooted in an overriding sense of narcissism on Commodus' part, judging by his stated obsession to create a "blood pure" dynasty, whether she wanted to or not.
* Heavily implied in both [[Film/{{Scarface 1932}} 1932]] and [[Film/{{Scarface 1983}} 1983]] versions of ''Scarface''.
* ''Film/TheRockyHorrorPictureShow'': Magenta and Riffraff have ''a lot'' of [[MemeticMutation elbow sex]].
-->'''Audience line''': Incest is the best, put your sister to the test!
%%* A major plot point in ''Film/{{Oldboy 2003}}''.
* Played for laughs in ''Film/BladesOfGlory''. HilariousInHindsight since the actors are actually married.
* [[spoiler:Noah Cross]] from ''Film/{{Chinatown}}'' famously crossed the MoralEventHorizon when it was revealed that [[spoiler:he molested Evelyn Mulwray, his own daughter, which resulted in her having a daughter who was her sister as well. He ends up with custody of the inbred kid, who can expect some serious raping of her own, after Evelyn gets a bullet in the head. [[ShootTheShaggyDog Not a pleasant ending at all]]]].
* ''Film/{{Psycho}}'' hints at this, but it's not until [[Film/PsychoIVTheBeginning the prequel]] that the subtext becomes a textbook case of FreudianExcuse.
* In ''Film/{{Sleepwalkers}}'', the titular [[OurVampiresAreDifferent shapeshifting energy vampires]] are an incestuous mother and son duo. They are shown to have tons of sex with each other, and feeding off the life force of virgin girls. It is said that Charles, the son, feeds his mother Mary through their incestuous sex. They're also implied [[LastOfHisKind not to have much choice in partners]].
* In the original ''Film/{{Hellraiser}}'' film, Kristy's [[EvilUncle Uncle Frank]] starts tiring of the sex he has with her stepmother. So he decides to turn his attention to Kristy, later noticing how beautiful she's grown up to be, and attempting numerous times to rape her (even culminating in them ''kissing''). Considering that Frank is well known for having broken ''all'' taboos and kinks to have in sex, it's unsurprising that he'd be keen on trying out {{incest|IsRelative}} with a [[{{Ephebophile}} minor]].
* Top Dollar and his half-sister Myca from ''Film/TheCrow''. They were both into it, they just both happened to be evil.
* In ''Film/CruelIntentions'', Creator/SarahMichelleGellar's character promises to sleep with her step-brother if he can deflower an avowed virgin before the summer is over. Somewhat averted in that they're not blood relatives, so it's not proper incest.
* Parodied in ''Film/NotAnotherTeenMovie'' where the interest is reversed with the sister agreeing to help him win the bet to get the nerdy-girl only if he'll agree to have sex with her after he wins. He objects that they are related and she responds "--only by blood!"
* Implied with the [[BigScrewedUpFamily Largos]] in ''Film/RepoTheGeneticOpera''.
* ''Film/HellboyIITheGoldenArmy'' had the BigBad imply that he was in love with his [[{{Twincest}} twin sister]]. Apparently, this was intentional amongst the actors.
* Creator/ParkerPosey's character in ''Film/TheHouseOfYes'' has this up the wazoo.
* ''Film/LaReineMargot'' (Queen Margot) has this in spades, with the eponymous Marguerite de Valois having sex with her brothers and their brother Anjou being in love with their mother, Catherine de' Medici. The whole incestuous lot is pretty villainous with atrocities, backstabbing, and poisonings under their belt, though a couple of them are more ambiguous including Margot herself.
* In ''Film/ThatsMyBoy'' [[spoiler:Donny discovers that his son's fiancee is cheating on him… with her younger brother]].
* The extremely villainous Calvin Candy of ''Film/DjangoUnchained'' is strongly implied to be… involved with his sister. Nothing is explicitly stated or shown, but the subtext is heavy.
* ''Film/CrimsonPeak'' reveals that [[spoiler:Thomas and Lucille Sharpe]] have had this going on since they were ''teenagers''. Even worse, she has actually given birth several times and killed all her offspring to hide their secret.
* ''Film/TheDevilsAdvocate'' implies a sexual relationship between Satan and his female offspring. She certainly has no moral boundaries regarding offering herself to her own brother to create TheAntichrist, with the Devil being the one proposing it to his son. Then there's that scene where Kevin sees her and another woman making out in an elevator before going up to Milton's apartment for a presumed threesome.

[[folder:Folk Tales]]
* A classic fairy tale found throughout Europe concerns, in various variations, a wicked older male relative pursuing a beautiful younger female niece or daughter. Thanks to gender taboos of the period, the fathers never undergo the punishments typical of {{Grimmification}} even though the stories otherwise condemn his actions. An even creepier variant, "The Girl with No Hands," is, well, nightmare fuel of the worst sort.
* Peter Stumpp of Bedburg (the original werewolf) was described as having sex with his daughter. The authorities made sure to execute her as well.
* In some versions of the Arthurian legends Mordred was the son of Myth/KingArthur and his half-sister Morgana (swept under the rug in the musical ''Theatre/{{Camelot}}'' but dramatized in the movie ''Film/{{Excalibur}}''). However, in an inversion of the usual applications of this trope ''she'' seduced him (using a disguise spell) as part of her EvilPlan to avenge his father using a similar to have sex with her mother after murdering her father. Villain Vortigern was also incestuous with his daughter.
** T.H. White's ''Literature/TheSwordInTheStone'' discusses that it is committing this sin, however unwittingly, that dooms Arthur to such a tragic life. (Well, drowning all those children may have had something to do with it, too. While this is usually chalked up as Arthur's greatest sin, it's only one of many sins that bring Camelot down.)
** N.B.: in the original legends his incest was with Morgause, his other half-sister. Modern versions often just [[CompositeCharacter combine this role]] with Morgan(a) for simplicity. (White's version, though, kept Morgause.)
* In Finnish folktales, the villains, bogeymen and monsters are assumed to have gotten their birth from villainous incest.
* Part of the demonisation of Pope Alexander VI (Rodrigo Borgia) is the continuing rumours that he had sex with his daughter, Lucrezia Borgia. Quite a few historians today are doubtful that this ever happened, placing it in mythology territory.

* In ''Literature/ABrothersPrice'' this does not only serve the purpose of showing how evil the villains are, it also helps the heroes find out that [[spoiler:a woman was in bed with her villainous brother in the literal and figurative sense. There's a child]].
* Literature/TheBible had Lot's daughters raping him, which is said to have produced the Moabites and Ammonites with whom the Israelites had frequent wars. Many consider this a vilification of these rival tribes, though various arguments in Literature/TheTalmud go back and forth on whether one should consider Lot or his daughters the villains for their part in this; this being partially because the much admired matriarch Ruth was a Moabite, so the Davidic line (which goes all the way to Jesus Christ, if you accept the New Testament) also descends from Lot and his daughters. Of course, some also contend that since this descent comes [[LineageComesFromTheFather only from the female side of the line, any lingering legacy of shame associated with this incident isn't heritable]].
** Not everyone is entirely sure what happened between Noah and his son Ham in a certain tent either, though many think it was this due to Noah's rather vindictive curse against him and particularly Ham's son Canaan (possibly for putting him up to it).
** Same thing goes for Tamar and her half-brother, Amnon. He lusted her so much that he managed to rape her in his quarters. [[KarmicDeath Boy, did he pay dearly for that…]]
* Caligula with his sisters and Nero with his mother, both in ''Literature/IClaudius'' and (allegedly) in RealLife. The only reason Nero was even emperor is that his mother married the emperor Claudius--her ''uncle.'' Claudius was the first man in Roman history to marry his niece and had to change the law to permit the union. Agrippina (the niece Claudius married) was also one of Caligula's sisters, by the way. In Paul L. Maier's historical novel ''The Flames of Rome'', Nero's wife chews him out for his part in the affair, specifically pointing out that incest was apparently an old habit with her: "How old was she when her brother Caligula first seduced her, twelve!?" The Julio-Claudian dynasty in its latter years was a major {{squick}}fest all around.
* ''Literature/SecondApocalypse'':
** Ikurei Istriya has a sexual relationship with both her son, the treacherous Emperor Ikurei Xerius, and her nephew, the equally treacherous Prince Ikurei Conphas.
** [[spoiler:Anasûrimbor Serwa and Anasûrimbor Moenghus are revealed to be lovers in spite of officially being half-siblings, though in reality they share no blood relation. When Sorweel discovers their secret, they also reveal that they're far more cruel than he had originally thought.]]
* In ''Literature/TheSilmarillion'', Maeglin lusts after his cousin Idril. His feelings are unreciprocated, partly due to the Noldorin incest taboo, partly because she marries someone else. A series of unfortunate events later, Maeglin betrays the location of the formerly hidden city to [[{{Satan}} Morgoth]] in exchange for lordship and possession of Idril.
** In ''The Fall of Númenor'', Ar-Pharazôn becomes the last king of Númenor by marrying the late king's daughter against her will. She's his first cousin. Pharazôn's ego and disregard for traditions or basic morality simply made it that much easier for Sauron to corrupt him into Melkor-worship. Pharazôn had no legal right to the throne and marrying Míriel did not actually give it to him. He simply used it as a pretext.
*** There are multiple versions of this. In some of JRRT's versions, Tal-Palantír's daughter is infatuated with Pharazôn (who by all accounts was likeable in his youth) and marries him consensually, and hands him the ''de facto'' control of the Sceptre. In others, he takes her to himself against her will and seizes the Sceptre with the approval of the general public (who by now were mostly corrupted). This is the latest version so is probably what Tolkien eventually intended.
*** JRRT vacillated a ''lot'' on the consensual-nonconsensual nature of sexual relationships in the larger canon; the parents of Maeglin above, for instance, go from Rape is Love, to consensual babymakin', to "wifing by force" (which is Tolkienese for marital rape).
* Celie's father in ''Literature/TheColorPurple'', although [[spoiler: she isn't really his daughter]].
* At one point in ''Literature/{{Lolita}},'' Humbert Humbert fantasizes about siring a daughter with his adoptive daughter, then a granddaughter with said daughter, and so on. Despite the MisaimedFandom, [[Creator/VladimirNabokov Nabokov]] definitely intended Humbert to cross the MoralEventHorizon.
* Mason Verger in the book but not TheFilmOfTheBook ''[[Literature/TheSilenceOfTheLambs Hannibal]]''.
* In his Wold Newton universe, Creator/PhilipJoseFarmer suggests that Carl Peterson (archfoe of Literature/BulldogDrummond) and his lover Irma (who sometimes posed as his daughter) were, in fact, father and daughter. A later version of the Wold Newton family tree establishes Peterson and Irma as uncle and niece.
* ''Literature/ASongOfIceAndFire''
** Jaime and Cersei Lannister engage in {{twincest}}, which is revealed as an EstablishingCharacterMoment. Although with the series' GreyAndGrayMorality, they're villain-''ish'' rather than full-on villain''ous''. However, [[spoiler:Jaime becomes less villainous over time as he grows apart from his sister, while Cersei becomes more villainous. She also goes on to seduce her teenage cousin Lancel, with Jaime, who has always been faithful to her, feeling just as deeply betrayed as if an unrelated partner cheated on him.]] Jaime and Cersei, however, are an unusual example of this trope, and might even be interpreted as a {{deconstruction}}; even when they're at their worst, their love for each other and for the children born of their incest is humanising for both of them, and is Cersei's single redeeming feature. Also, their justified fear of being caught and killed along with their children is one of the things that pushes them to some of their worst acts--"The things we do for love,"--and they (especially Jaime) would likely be a lot less villainous if their lives weren't endangered by their feelings for each other. Finally, their villain credentials are firmly established through their willingness to murder children and other innocent people, while Cersei gets noticeably worse for reasons totally unrelated to her relationship with Jaime, making their incest almost a separate issue from their morality, and as it drives many of the events of the books it is certainly treated as more than a quick shorthand for showing how evil they are.
** The Targaryen family has a long history of incest, often times matching siblings together to keep the bloodline pure. The dynasty produced a number of mad and villainous people, the most notable to the series being Aerys II, "The Mad King." That said, not all the Targaryens were evil, Jaehaerys I, who married his sister Alysanne, being considered one of the best Kings Westeros ever had.
** Euron [[EyepatchOfPower "Crow's Eye"]] Greyjoy is implied to have molested his younger brother Aeron, who despises and fears him, and still has nightmares of a creaking hinge when Euron visited him at night.
** Craster and his wives, who are also his daughters.
* [[BigBad Lord]] [[HornyDevils Raith]] of the [[OurVampiresAreDifferent White Court]] in ''Literature/TheDresdenFiles'' has the habit of ''raping'' his daughters into [[MoreThanMindControl submission]], thus amplifying the evil of this trope by making it non-consensual. He kills his sons for being potential "threats," though, despite the fact that this cuts his potential workforce in half and the canonical fact that the [[LesbianVampire Raiths tend not to care about gender]] when it comes to food. [[spoiler:Maybe he decided making the extra sexual slaves would have been too much of a drain, since he'd been cursed to be unable to feed and thus die a slow death via starvation. In the end, it doesn't matter, since it's one of his "not a threat" daughters that [[MindRape turns him into a vegetable]].]]
** Thomas says that his father's tastes "don't run that way", and there are a few other times when it's implied that the Raiths do have gender preferences when it comes to feeding, even if they're capable of going both ways
** The same daughter that turned the tables on Lord Raith, Lara, later [[spoiler: rapes her cousin Madeline to death while eating her alive.]]
** Nicodemus and his daughter Deirdre have been lovers for thousands of years. She talks about it in more detail in ''Skin Game'', where she claims that their relationship started off completely platonic, and it was only when both of them had been working together as partners for several centuries that they started to see each other as equal lovers instead of father and daughter. Harry, while still disgusted, finds it difficult to refute her assertion that their relationship is much deeper and stronger than any of the conventional romances he's had, and it serves as a strangely humanising moment for two unrepentant villains. Of course, this makes [[spoiler: their mutual willingness for Nicodemus to kill her to accomplish his goals all the more shocking, and even after this final leap over the MoralEventHorizon, Harry provoking him with his memories of her is enough of a BerserkButton to break his usual self-control]].
* ''And The Ass Saw The Angel'' had an [[CannibalClan incestuous clan]] of {{serial killer}}s living up in the hills. The protagonist's father was a defector from this clan.
* In ''Literature/{{The Crying of Lot 49}}'', the characters go to see a Jacobean-era revenge play called ''The Courier's Tragedy'', whose villains are an incestuous family of aristocrats vying for the throne.
* Terah Graesin and her brother Luc, from the ''Literature/TheNightAngelTrilogy''.
* ''The Ringmaster'' by David Gurr gets philosophical about this trope--it sets up one of these between a Nazi and his sister, and uses it as something of a metaphor for just how screwed up ThoseWackyNazis were.
* ''Literature/ParadiseLost'' uses this as part of an extended allegory of Christian beliefs. {{Satan}} has sex with his daughter Sin, who sprang out of his head when he came up with the notion of rebelling against God. Their resulting offspring is [[TheGrimReaper Death]].
* Non-consensual incestuous relationships figure in the backstories of several Creator/DeanKoontz characters, such as in ''Literature/TheBadPlace'', ''Whispers'', ''Life Expectancy'', and ''What the Night Knows''.
* In ''[[Literature/ChroniclesOfBloodAndStone The Fifth Sorceress]]'', the FaceHeelTurn of [[spoiler:Shailiha]] is made explicit when she makes passes at her captive [[spoiler:brother]], though she doesn't actually get a chance to rape him.
* ''Literature/HarryPotter'':
** You can pick a random member of the Black family and find someone, if not evil, at least highly unpleasant who is married to an awfully close relative, highlighting the FridgeLogic of insisting on "blood purity." Sirius and Regulus's parents are the most blatant example, especially with Walburga screeching about mudbloods and "filth of my flesh." The closest couple actually given are second cousins, which is perfectly legal ''everywhere'', but those second cousins themselves are often children of second cousins, and so on.
** The Gaunt family also fits into this, frequently marrying cousins, which led to a strain of mental instability. One member, Merope, defied her pureblood family's traditions and married a local {{Muggle|s}} -- albeit through a LovePotion, making their son Tom Marvolo Riddle a ChildByRape. By doing this, Merope allowed Tom to become one of the most powerful wizards of all time instead of being pathetically inbred.
* In ''Literature/TheElenium'', it is fairly common knowledge that the late [[DeadlyDecadentCourt King Aldreas had a sexual relationship with his sister Arissa]], though they weren't so much evil as sickeningly depraved.
* The "novelization" of the 1980 ''Film/{{Flash Gordon|1980}}'' included a small scene of Ming and Aura pleasurably reminiscing about the most recent time they had (BDSM-heavy) sex together… eeeeeep.
* In the ''Literature/{{Deryni}}'' series, this is one of the signs that Imre is a depraved tyrant, though the tyranny is only by medieval standards.
* The Duet, [[{{Twincest}} twin rulers]] of the Seven Kingdoms in Morgan Llywelyn and Michael Scott's ''Arcana'' series.
* Duchess Alicia in ''The Waters Rising'' by Creator/SheriSTepper clearly lusts after her father [[spoiler:[[NotBloodRelated who, unknown to her is not actually her father]]]] and has relations with her half-brother and [[spoiler:the Old Dark Man who actually is her father, although she thinks he might be her grandfather]].
* Leo Friend, one of the villains in Creator/TimPowers' ''Literature/OnStrangerTides'', lusts after Beth Hurwood as a surrogate for his own mother. Technically applies to Beth's father, who plans to oust Beth's spirit from her body so her mother's ghost can move in, although he's so out of touch with reality that the incestuous implications may honestly never have crossed his mind.
* In the ''Literature/LymondChronicles'' by Dorothy Dunnett, the arch-villain [[spoiler: Gabriel has a relationship with his sister Joleta]].
* In the backstory of ''Literature/ACivilCampaign'', Richars attempts this on a 12-year-old Lady Donna.
* Common in the Literature/AlexDelaware novels by Creator/JonathanKellerman.
* In Creator/MercedesLackey and James Mallory's ''Literature/TheObsidianTrilogy'', Demon Queen Savilla and her son Zyperis frequently engage in sexual activity and express how attractive they find each other.
* Matthew Lewis both plays it straight and subverts it in ''Literature/TheMonk''. Played straight when the title character, Ambrosio, driven by his lust for the innocent Antonia [[spoiler: tries and fails to seduce her [[MoralEventHorizon then rapes and kills her]]. The Devil was after his soul]]. Subverted when he learns [[spoiler: to his horror that Antonia was his ''long lost [[BrotherSisterIncest younger sister]].'' It's too late by that point because the Devil had convinced Ambrosio to sell his soul to him in order to escape punishment for Antonia's rape and murder]].
* Creator/RobinMcKinley's ''Literature/{{Deerskin}}'' is built on this trope, being based on the classic fairy tale "Donkeyskin". When the king's wife dies, he promises to only marry someone as beautiful as she. Should have included a "kin excluded" clause. The rest is nothing short of mortifying.
* In ''[[Literature/GarrettPI Red Iron Nights]]'', the serial-killer curse was created by a long-ago evil sorcerer who'd been rejected by an equally-evil sorceress, in favor of her own father.
* [[Literature/TalesOfKolmar Marik of Gundar]] never actually has sex with his long-lost (heroic) daughter, but he's not above seducing her into thinking him harmless and attractive with the help of demon-made charms. She doesn't know he's her father at the time, but he definitely thinks it's possible and doesn't even hesitate.
* In ''Literature/{{Dracula}}'' by Creator/BramStoker, the eponymous vampire has three companions called "sisters": one blonde and two brunettes. The two brunette vampires are described as having facial features similar to Count Dracula. Meanwhile, the blonde bride is described as having authority over the other two. Many readers have speculated that the blonde bride is the mother of the two brunettes, and that Dracula is the father.
* In ''[[Literature/TheElricSaga Elric of Melniboné]]'', the EvilPrince Yyrkoon is described as "openly lusting after his sister Cymoril." Apparently it's {{justified|Trope}} (among other things) by norms that allow incestuous royal marriages, but even the decadent Melniboneans feel it's slightly wrong for Yyrkoon to look forward to marrying his sister. Cymoril is also a {{Love Interest|s}} for Elric, and though Elric and Cymoril are [[KissingCousins cousins]], this is not presented as wrong.
* As the ''Literature/SPQRSeries'' by John Maddox Roberts gives {{Historical Villain Upgrade}}s to Publius Clodius Pulcher and his sister Clodia, the protagonist regularly assumes that their relationship is sexual, as their enemies claimed in real life. For their part, they deny it.
* ''Literature/MalusDarkblade'' comes from a BigScrewedUpFamily of sadistic, treacherous, power-hungry monsters (or just [[AlwaysChaoticEvil Dark Elves]] for short), and the incestuous relations between the siblings is the least of their misdeeds. Oldest brother openly consorts with his sister, when he's not in the high seas pillaging, youngest brother lusts for the same sister, and Malus himself shares the bed with his half-sister.
* In ''Literature/{{Dune}}'' Baron Vladimir Harkonnen openly ogles his nephew Feyd-Rautha (which both movie and miniseries played up for all its worth) and he also harbors an attraction to Paul Atreides [[spoiler:who, it turns out, is his grandson.]] ). The ''Literature/DuneEncyclopedia'' suggests that the Baron and Feyd had a sexual relationship, and strongly implies that he had sex with his mother before strangling her.
* In the AlternateHistory novel ''Moon of Ice'' by Brad Linaweaver, Nazi propaganda minister Joseph Goebbels HasAType which happens to be just like his ReallyGetsAround daughter Hilda. However after noting this in his diary, he [[LetUsNeverSpeakOfThisAgain forcefully dismisses the idea]].
* In the first Literature/InspectorMcLevy novel ''The Shadow of the Serpent'', the assassin known as the Serpent is sleeping with his illegitimate daughter. However, the daughter is the one who instigated the relationship as a means of controlling her father. Needless to say, both are thoroughly screwed-up and evil people.
* ''Literature/ChroniclesOfTheKencyrath'' plays with this trope with Gerridon and Jamethiel. They're the most infamous people in the entire history of their people, and they were {{twin|cest}}s and consorts. However, this is slowly {{subverted|Trope}}, because as the story goes on, you learn that incest was traditional and culturally sanctioned in their culture, and doesn't have much to do with their being villainous. And the ''heroes'' of the story are shaping up to be twincestuous too! The Kencyrath have a... different culture than humans, and these two cases aren't the last incest you hear of. But this trope is pretty averted, and even in cases when incest '''is''' something horrific, it's portrayed as RapeIsASpecialKindOfEvil, not VillainousIncest.
* Averted in ''Literature/{{Forbidden}}'', where the BrotherSisterIncest is told through the SympatheticPOV of the heroes, both of whom are equal participants over the age of consent and do nothing remotely abusive to each other. They struggle with their feelings a lot, but they are unable to find any solid reasons why their love should be considered so wrong, and their romantic relationship is much closer and healthier than most teenagers despite being birthed by the same mother.
* Ashfur from ''Literature/WarriorCats'' is actually Squirrelflight's uncle through her mother, though this isn't mentioned in the text. [[spoiler:Ashfur attempted to kill Squirrelflight's kits and her mate in jealousy]].
* At the end of [[TheCatWhoSeries The Cat Who Played Post Office]], Qwilleran receives a posthumous letter from [[spoiler:Penelope Goodwinter, confessing to a lifelong unrequited love for her brother Alexander that led her to arrange the murder of a poor girl he'd impregnated. She claims in the letter that she expects him to murder her to prevent exposure; Qwilleran realizes in the last paragraph of the book that she committed suicide in such a way as to frame him, in revenge for his deciding to marry someone else.]]

[[folder:Live Action TV]]
* Brother Justin from ''Series/{{Carnivale}}'' and his sister Iris have a very, er, ''close'' relationship with each other. And did we mention he's father of the AntiChrist?
** And ''then'' [[spoiler: it turns out that Sofie, the Crowe's new maid--after they lost the last three to, er, Justin[[note]]Via implied mind rape and not-at-all implied literal rape using mind control[[/note]]--is actually his long-lost daughter. Which, through a convoluted series of events, only Iris actually realizes, and, despite Justin being all over the girl, hasn't actually told anyone yet]]. Worse yet: WordOfGod said that if the series had continued, [[spoiler:Sofie would have married Justin and had a child. Although it wouldn't have been clear whether the child was Justin's or Ben's]].
* ''Series/TheXFiles'' episode "Home."
* ''Series/{{Battlestar Galactica|2003}}'': After erasing her true memories, [[spoiler:John Cavil]] knowingly fraks the scientist who considers herself his mother and created him in the image of her father for extra {{squick}}.
* ''Series/TheLeagueOfGentlemen''. Although it's not revealed until partway through season 2 that CorruptHick {{Serial Killer}}s Tubbs and Edward are brother and sister, it doesn't really come as much of a surprise.
* ''Series/{{Wiseguy}}''. Arms dealers Mel and Susan Profitt.
* In ''Series/HouseOfCardsUK,'' it's subtly hinted that Francis Urquhart secretly wants to do this. After the elderly Urquhart begins an affair with the young Mattie Storin, and she starts calling him "Daddy," he tells her, "I always wanted to be a father of daughters."
* Divia in ''Series/ForeverKnight'', a child vampire who turned her father, Lacroix, proposed this rather forcefully to him. His refusal involved a wooden stake.
* ''Series/{{CSI}}'' had an episode that dealt with the murders of a husband and wife, and their two sons, but their two daughters survived unharmed. Over the course of the investigation, we find out that the father had been sexually assaulting the older daughter from a young age. [[spoiler: This "relationship" resulted in her getting pregnant at 13 and giving birth to the younger daughter. When Dad started abusing the younger daughter, the older one arranged for a friend to break into the house and kill the family - the father for abusing them, and the rest of the family for never doing anything to try and stop him.]]
* ''Series/BlueHeelers'' pulls this a couple of times, one where a father '''''shoots his own daughter''''' because he wanted to keep her to himself. Another had recurring psycho Luke Darcy rape his own grandmother in his final appearance.
* On ''Series/BuffyTheVampireSlayer,'' part of Spike's back story is that he was a momma's boy when he was alive, and that after turning into a vampire he spread it to her so that she could live forever. However, [[OurSoulsAreDifferent losing her soul]] sort of made her [[CaptainObvious a less friendly person]], and she mocked him by claiming that he wanted to go "back inside," trying to seduce him. Spike was so freaked out that he staked her. The fact that she was named Anne, which is also Buffy's middle name, is not coincidental.
** A more metaphorical example in the Buffyverse would be vampires in general; Darla sired Angelus, and they were a couple (as well as villains) for several hundred years; Angelus sired Drusilla, who calls him "daddy" at one point but also "my Angel"--and they have definitely slept together; Drusilla sired Spike… Apparently some vampires seek out people to turn into their eternal partner, but since that involves "siring" them, it could be seen as a kind of incest.
*** Spike also refers to Angel as his "grandsire" at one point. And, according to WordOfGod they have slept together at least once.
* Added to William and Regan Hamleigh in the miniseries adaptation of ''Series/ThePillarsOfTheEarth'', because apparently they weren't villainous enough already.
* ''Series/LawAndOrderSpecialVictimsUnit''
** In a 2003 episode, [[spoiler: Charlie Baker is told to have raped his brother, Billy]].
** In a 2010 episode, a pedophile maintains the perfect cover by leading an activist group that works to expose and shame known sex offenders. It's revealed at the end of the episode that his StartOfDarkness was raping his nine-year-old sister when he was a teenager.
* Jim Profit, VillainProtagonist of ''Series/{{Profit}}'' has a sexual relationship with his mother, although she is his stepmother and they are not actually related by blood.
* Vincent/Valerie of ''Series/{{Passions}}'', the intersexed child of Julian Crane and Eve Russell, rapes his half-sister twice, has an affair with his uncle Chad, and ''seduces his own father and becomes pregnant by him''. This last situation prompts the immortal line, "Have your baby so I can get back to drinking," as said by Julian to his child/lover as Vincent delivers their offspring.
* ''Series/GameOfThrones'':
** Twins Cersei and Jamie Lannister's sexual relationship is at the heart of much of the plot, although "villainous" is not so straightforward in this series.
*** Jaime and Cersei, however, are an unusual example of this trope, and might even be interpreted as a deconstruction; even when they're at their worst, their love for each other and for the children born of their incest is humanising for both of them, and is Cersei's single redeeming feature. Also, their justified fear of being caught and killed along with their children is one of the things that pushes them to some of their worst acts, and they (especially Jaime,) would likely be a lot less villainous if their lives weren't endangered by their feelings for each other. Finally, their villain credentials are firmly established through their willingness to murder children and other innocent people, while Cersei gets noticeably worse for reasons totally unrelated to her relationship with Jaime, making their incest almost a separate issue from their morality, and as it drives many of the events of the books it is certainly treated as more than a quick shorthand for showing how evil they are. Notably, Jaime repeatedly says "we don't get to choose who we love," and nobody can actually refute it as an argument.
** Viserys Targaryen is established as villainous when he undresses and fondles his sister, but the Targaryen dynasty has produced everything from TheGoodKing to TheCaligula regardless of marrying their siblings.
** Craster, who practices forced ParentalIncest.
* On ''Series/TheBorgias'': there is a lot of IncestSubtext between Cesare and Lucrezia, but it's treated more as pure love than sexual chemistry. That said, Cesare is most definitely a VillainProtagonist, and his obsession with Lucrezia has led him to murder once already. In season 3, [[spoiler: they have sex]] and Cesare's fixation on his sister leads to him [[spoiler: murdering her husband and declaring Lucrezia "his".]] When someone makes a sarcastic comment about how much he loves his sister, he only replies, "too much".
* The evil Earth-2 version of Clark on ''Series/{{Smallville}}'' (in a universe in which he was found and raised by Lionel Luthor instead of the Kents) has a sexual relationship with his adoptive sister Tess. Although it's a case of NotBloodSiblings; they were raised together since birth and he refers to her as "sis."
* Played with in the ''Series/AdamAdamantLives'' episode "The Doomsday Plan". When Doctor Mort's daughter kisses him in a most un-daughterly fashion, Adam is clearly shocked and objects that he is is her father. The girl then laughs and says she is not really his daughter, but that she just plays the role as the public has expectations.
* In ''Series/{{Defiance}}'', Kindzi and her father T'evgin share a lot of deep kisses. It's been implied by other Votan characters that incest is common among the Omecs. That said, Kindzi is villainous enough to disturb even other Omec, while T'evgin eventually proves to be a pretty good guy.
* Exploited in the ''Series/HowToGetAwayWithMurder'' episode "It's Called the Octopus". The prosecution introduces Caleb and Catherine Hapstall's alleged incestuous affair as evidence that they killed their parents.

[[folder:Professional Wrestling]]
* The "sexual chocolate" angle in the Wrestling/WorldWrestlingFederation which saw Wrestling/MarkHenry betray Wrestling/DLoBrown went back to an event where Henry had sex with his sister, which was his {{Freudian excuse}}.
* In Wrestling/{{WCW}}, Wrestling/VinceRusso wanted to reveal [[Wrestling/StacyKeibler Miss Hancock]] as the illegitimate daughter of Wrestling/RicFlair, then have her date Flair's legitimate son David. In the end he got the relationship, but not the incest.
* Averted in WWE in 2006. When Wrestling/StephanieMcMahon was pregnant with her first child, Wrestling/VinceMcMahon wanted to do an angle where he would be revealed as the baby's father, but she refused to do it. Undaunted, Vince then suggested Wrestling/ShaneMcMahon (Vince's son/Stephanie's brother) would be the baby's father, but both of his kids said no to the idea.
* Paul and Katie Lea Burchill.

[[folder:Tabletop Games]]
* The ''TabletopGame/DungeonsAndDragons'' supplement the '''Book of Vile Darkness''' introduces the {{Horny Devil|s}} Fierna the Lord of the Fourth Layer of the Nine Hells and her father, the former ruler of the Fourth, Belial. Their relationship has continued into the Fourth Edition.
** Zaiden, the most powerful cleric to the demon lord Yeenoghu, murdered her mother and took her father as her mate. At least for a little while. When she got bored of him she killed him too.
* In ''TabletopGame/VampireTheMasquerade'', one of the 13 vampire clans are the Giovanni. In addition to being necrophiliac {{Necromancer}}s and members of TheMafia, they are also one big extended family… and really, ''really'' dedicated to "keeping it in the family". Then there are the spiritual descendants, the Sangiovanni bloodline, in ''[[TabletopGame/VampireTheRequiem Requiem]]'', who are just as devoted to necromancy, necrophilia, and inbreeding.
* ''TabletopGame/{{Warhammer}}'''s Malekith, Witch King of the Dark Elves, has long been rumoured to have an incestuous relationship with his mother, the Hag Sorceress Morathi. Though this has never been confirmed, and given that Malekith has been sealed within his magic armour for the last six and a half thousand years it is unlikely that anything too physical could have happened anyway.
* A ''TabletopGame/BattleTech'' example that takes some explaining: Former Archon Katherine Steiner-Davion was deposed by an alliance led by her brother after she usurped the regency of her sister and cracked down on her critics in an increasingly tyrannical manner. She was remanded over to Khan Vlad Ward of [[ProudWarriorRace Clan Wolf]], a society that reproduces via DesignerBabies. Growing increasingly hostile and vengeful towards the Inner Sphere houses, including her own, she eventually ''stole her own brother's DNA to create a genetically incestuous child'' just so she could raise him to re-ignite a war between the Clans and the Inner Sphere. No, Victor had no input on this (especially considering he was murdered before he ever found out about it), and no one has any idea how she managed to acquire his DNA, either. GodSaveUsFromTheQueen

* Antiochus and his (unnamed) daughter in ''[[Creator/WilliamShakespeare Pericles]]''. [[VillainBall For some reason]], her EngagementChallenge is a riddle whose answer is "Antiochus and his daughter are committing incest." They receive a KarmicDeath when Apollo blows them up. Not a conventional Engagement Challenge, though--they're usually honoured even when they're meant to be impossible, but Antiochus hasn't the slightest intention of honouring this one. The terms of the challenge mean that getting it wrong equals death, but it's made very clear that, for the sake of the king's own safety, getting it right ''also'' equals death.
* Shakespeare's ''Theatre/RichardIII'' plans to secure himself on the throne by marrying his niece (the daughter of Richard's brother, King Edward IV). In the play, he has his wife killed so that he can do so, although in history she seems to have died of natural causes. Also in actual history, he was planning to marry that niece off to [[http://en.wikipedia.org/wiki/Manuel_I_of_Portugal a distant (literally) cousin]].
* In ''Theatre/{{Hamlet}}'', the primary villain Claudius marries Gertrude, his brother's widow. While this is perfectly acceptable and even expected in some cultures, some Renaissance Europeans believed married couples to truly be one flesh, and therefore considered siblings-in-law to be equivalent to full siblings, and saw this as incestuous.
** Not that this stopped e. g. Henry VIII from marrying the widow of his brother Arthur with the Catholic Church's assent, Catherine claiming Arthur was too ill to consummate the marriage. Though he later used it as an excuse to divorce her.
*** For the above note: that marriage and the one in Hamlet, though politically viable, were considered morally wrong.

[[folder:Video Games]]
* Done by the VillainProtagonist of ''{{Gibo}}'' during the plot, and has an ending devoted to this.
* Suggested to have happened between [[spoiler:Lord Irving and his sister]] in ''VideoGame/WildArms2'', and she wasn't exactly consenting to it, either.
* Shinji Matou of ''VisualNovel/FateStayNight'' has repeatedly raped his [[spoiler:adopted]] sister, Sakura. In one of the game's routes, this [[TheDogBitesBack comes back to haunt him in a big way]].
* The residents of Andale in ''VideoGame/{{Fallout 3}}''. It [[CrapsackWorld says a lot about the world of Fallout]] that the incestuous family tree ''isn't'' the [[TownWithADarkSecret town's Dark Secret]].
* ''VideoGame/BlazBlue'' resident {{jerkass}} Jin Kisaragi has so much creepy HoYay subtext with his brother, Ragna The Bloodedge that it strains the limits of a T-rated game. And if that's not enough, his theme music is titled "Lust Sin."
** This is made fun of a lot in the games' story mode.
** And then in Ragna's ending, [[spoiler:there's v-13, a clone of his sister, penetrating him with a sword with all sorts of suggestive dialogue.]]
* One of the major villains in ''[[VideoGame/FirstEncounterAssaultRecon F.E.A.R.]]'', Harlan Wade, plays the EvilutionaryBiologist and donates his own DNA (along with that of others) for use in impregnating his own daughter in hopes of producing children with powerful psychic abilities. Another villain, Aristide, calls this development 'sick'.
* Heavily implied between the {{twin|cest}}s Alexia and Alfred Ashford, antagonists of ''VideoGame/ResidentEvilCodeVeronica'', especially on Alfred's part.
* Also heavily implied between the antagonists, the Scissortwins, and the BigBad Dick Hamilton to both his daughter Nancy and granddaughter, the protagonist Alyssa (who looks like her mother), in ''VideoGame/ClockTower3''.
* [[spoiler:Warden Darling]] in ''VideoGame/TheHouseOfTheDeadOverkill''.
* ''[[VideoGame/FireEmblemJugdral Fire Emblem: Genealogy of the Holy War]]'', has this. [[AntiVillain Arvis]] and his half sister Deirdre. In fact its a major point in the BigBad's plot to have the two marry and breed, so he could create a vessel for a Dark God. [[spoiler: ''And it happens''. To be fair, by that point not only neither knew it… but Deirdre was BrainwashedAndCrazy. Arvis ''did'' find out eventually, but he'd gone through such a TraumaCongaLine by that point that he was far beyond caring. (And their Dark God Vessel Kid was already born, with his twin sister as the inheritor of ''another'' bloodline and on the side of good.)]]
** On the other hand, other incestuous relationships aren't seen in '''such''' bad light. Lachesis was in UnrequitedLove with her half-brother Eldigan, whereas Claud and Sylvia are hinted to be either long lost siblings or distant cousins (WordOfGod says it's the latter), and they were all good guys. In the second generation Lester and Lana can marry their cousins Patty and Faval (with the bonus that their moms, Adean and Briggid, were ''identical twin sisters''), while Larcei is one of the most likely suitors for her half-cousin Shanan ''and'' [[GenerationXerox Lachesis's daughter Nanna can potentially marry Eldigan's son Ares]] (which is actually how the player gets in-game confirmation of how Raquesis really felt about Eldigan), and they're all on the side of good too.
** PlayedForLaughs with the Bandit Twins, a RecurringElement in the series: two {{Gonk}} bandit brothers who are always a little ''too'' fond of eachother.
* ''VideoGame/CityOfHeroes'': Tyrant and Dominatrix ({{Evil Counterpart}}s to Statesman and Ms. Liberty) had [[ParentalIncest Grandparental Incest]] behind the development team's back. It has since been {{Ret Con}}ned out of the story, after it was pointed out.
** It was vaguely hinted at to be happening--largely for {{Squick}} reasons--back when the [[MirrorUniverse Praetorians]] were simply {{Evil Counterpart}}s to the signature heroes. Now that they're [[GreyAndGrayMorality morally ambiguous]] and important characters in their own right, it would be out of place.
* Used in ''VideoGame/AssassinsCreedII'', which repeats its [[VideoGame/AssassinsCreedI predecessor's]] habit of giving each assassination target a KickTheDog moment just to reassure you it's okay to kill them. This is one of the black marks against the BigBad Rodrigo Borgia, who is implied to have a sexual relationship with his daughter. Confirmed in [[VideoGame/AssassinsCreedBrotherhood the sequel,]] with the villainy extended to his son, Cesare.
* Cesare and Lucrezia in ''VideoGame/AssassinsCreedBrotherhood''; the game even opens up with them kissing during the assault on the Assassin's compound. When Cesare is arrested for his crimes, one of them listed is incest.
* ''VideoGame/NoMoreHeroes'': At the end of the game, Travis (a very ''dark'' {{antihero}}, borderline VillainProtagonist [[spoiler:until CharacterDevelopment kicks in towards the end and [[VideoGame/NoMoreHeroes2DesperateStruggle in the sequel]]]]) discovers that [[spoiler:Jeane (the FinalBoss, [[NamesTheSame not his]] [[MoralityPet pet cat]]), the girl he's been searching for and was once romantically involved with is [[BrotherSisterIncest his half-sister]]. Travis is as {{squick}}ed out as the player is. Jeane, on the other hand, doesn't seem to mind that it happened. In the end, [[DeathEqualsRedemption the two reconcile right before Travis kills Jeane]]]].
* In the InteractiveFiction story ''Videogame/{{Anchorhead}}'' this is the dark secret of [[spoiler: your husband's family]].
* In ''[[VideoGame/RivalSchools Project Justice]]'', [[SmugSnake Kurow Kirishima]] [[AllLoveIsUnrequited onesidedly lusts]] after his beautiful older sister [[LadyOfWar Yurika]]. Made even more obvious in the Darkside Student Council path which is fron Kurow's POV [[spoiler: and in Kurow's ending, when he's seen caressing his [[BrainwashedAndCrazy brainwashed-into-subservience-to-him]] older sister's hair…]]
* It is very implied between Weiss and Nero from ''VideoGame/DirgeOfCerberus''. And at the ending [[spoiler: Nero merges with Weiss to free him from Hojo, making them become one]].
* ''VisualNovel/KaraNoShoujo.'' The overall attitude isn't that the incest is inherently wrong (though there is no sexual tension with the protagonist's little sister) but that only the mentally unstable would do such a thing.
* Once you learn the backstory, ''VideoGame/HauntingGround'' becomes MADE of this. Basically, [[spoiler: more or less every one of Fiona's stalkers is closely related to her, with the exception of Daniella. Her family's been cloning themselves through {{alchemy}} for centuries, each generation being composed of identical copies of the alchemist Aureolus Belli, Fiona being the first naturally born, non-Aureolus-clone Belli in hundreds of years. Her father was one of these clones, and his "brother" Riccardo stalks Fiona in an [[AttemptedRape attempt]] to [[StalkerWithATestTube impregnate her with another clone]]. Again, Riccardo is, not counting his rapid degeneration due to being hastily made, completely identical to Fiona's [[ParentalIncest father]], even if he wasn't already her [[CreepyUncle uncle]]. Debilitas, the first stalker in the game, is another clone, this time made by Riccardo. It's not immediately obvious though since Debilitas's creation was even more botched than Riccardo's own, though Debilitas does not yet seem to be suffering from any degeneration. This might not completely count as Debilitas's attraction to Fiona is entirely innocent and his danger to her is unintentional, but still. Lorenzo, on the other hand, swings right back into this trope. He is Fiona's "grandfather" and, again due to the cloning, is also genetically her father, the same as Riccardo. Like Riccardo, he wants Fiona's body, but for the Azoth contained inside rather than purely out of lust. Though, given some of the comments he makes towards her, especially after he's regressed in age to a young man, and the tone of voice he uses when talking to her, he's probably got some fairly squicky plans for her other than just Azoth-extraction]].
* [[IOwnThisTown Maven Black-Briar]] of ''VideoGame/TheElderScrollsVSkyrim'' is head of a family that includes Hemming, Ingun, and Sibbi Black-Briar. Hemming is indisputably her son. He may mention in conversation that Ingun and Sibbi are his children; Maven is listed in the Creation Kit as their grandmother. However, Maven explicitly calls Ingun her "favorite daughter", and both Ingun and Sibbi refer to her as their mother. Maven has no husband; Hemming has no wife. It's not hard to do the math, especially since both kids [[InbredAndEvil sound like Borgia expys]] - Sibbi is in prison for a murder even his mother/grandmother found unnecessarily heinous (though more from the bad publicity than the act itself), while Ingun, ''the only remotely pleasant member of the family'', is fascinated by alchemy and its more lethal applications.

[[folder:Web Comics]]
* Thomas, Nicole's dad in ''Webcomic/{{Concession}}'' is a supervillain, he also regularly has sex with his son. Though in a strange case the comic shows this as if it's a ''[[{{Squick}} positive]]'' thing.
* In ''Webcomic/FeyWinds'', two members of [[BigBad Sigurd's]] Minionz, Hansel and Gretel, apply.
-->'''Sidney:''' Are you two married or [[BrotherSisterIncest brother and sister]]!?
-->'''Hansel and Gretel:''' [[MathematiciansAnswer Yes!]]
* Yet another rape trope for Drip in ''Webcomic/{{Jack|DavidHopkins}}''. The AnthropomorphicPersonification of Lust is being punished for his sins in part having to pleasure his grandmother the way he did "when [he was] little.". Later, it's revealed that [[spoiler: Drip had sex with his daughter Lita]]. He knew the relation, she didn't.

* Creator/AllisonPregler doesn't understand why this is {{averted|Trope}} in ''Film/{{Witchcraft}},'' which features a pair of lovers reincarnated as [[ParentalIncest a mother and son]].
-->"My question is, why did John and Elizabeth need Grace [to have John's baby]? I mean, let's ''not'' pretend the mother-and-son thing would bother them. They're evil and stuff, why not cut out the middle man?"
** Though in the sequel, Elizabeth's ghost ''is'' trying to have sex with John's baby (her grandson), and Lupa is both {{Squick}}ed and confused by how casually it's portrayed.

[[folder: Western Animation ]]
* Jackal from ''WesternAnimation/{{Gargoyles}}'', along with his sister Hyena, is one of the most ridiculously AxCrazy characters in the Disney canon. However, when Hyena falls in love with HumongousMecha Coyote, he seems to find it a little more reprehensible than just a normal big brother would, especially considering it's nothing worse than what he's done, and comes off much more as a jealous StalkerWithACrush. He later got most of his body replaced with cyborg parts, and they end up in a pretty sick love triangle for most of the series.
* ''WesternAnimation/ReBoot'': While Megabyte's attempt to marry Dot may not seem like incest at first glance, it counts if you understand his origin. He was "born" from an explosion triggered by an experiment [[GoneHorriblyWrong gone wrong]] made by Wellman Matrix (Dot's father), so technically he is Megabyte's father as well. Megabyte even calls the nullified Wellman "father" and Hexadecimal (Megabyte's sister) calls Dot her sister late in the series. So Megabyte marrying Dot falls under this trope.
* ''WesternAnimation/YoungJustice'' [[PlayingWithATrope plays with]] this trope [[PlayedForLaughs for laughs]]--ComicBook/{{Superboy}} and [[NaiveNewcomer Miss Martian]] go undercover as a pair of villainous siblings, though in reality they're LoveInterests. When they have their BigDamnKiss while still in disguise, [[EvenEvilHasStandards actual villain]] [[AnIcePerson Icicle Jr.]] [[SubvertedTrope is horrified]].
--> "Dude, she's your ''sister!''"