History Main / EvilTwin

* In the classic voiceless Swede horror film ''The Rat King'', domehow a rat manages to masquerade as the hero's girlfriend. [[AWizardDidIt (Don't ask.)]] She blows her cover by making the [[SexIsEvil grave error]] of wanting to have sex with the hero (it's the 1910s or so) -- he immediately [[{{Pun}} smells a rat.]]

* In the classic voiceless Swede horror film ''The Rat King'', domehow a rat manages to masquerade as the hero's girlfriend. [[AWizardDidIt (Don't ask.)]] She blows her cover by making the [[SexIsEvil grave error]] of wanting to have sex with the hero (it's the 1910s or so) -- he immediately [[IncrediblyLamePun smells a rat.]]

[[quoteright:350:[[ComicBook/{{Superman}} https://static.tvtropes.org/pmwiki/pub/images/superman_superbully_cover.png]]]]

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[[caption-width-right:350:It's hard to [[DastardlyWhiplash twirl a mustache]] without an opposable thumb.]]

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* [[https://garfield.com/comic/2011/12/04 When Jon tells]] ''ComicStrip/{{Garfield}}'' that SantaClaus has been watching him, he writes a letter suggesting Santa might have seen his evil twin.

The evil twin may attempt to convince their good twin [[NotSoDifferentRemark that they're aren't so different]], saying WeCanRuleTogether and that the good twin's friends are holding them back from greatness. This often ends with a MirrorMatch as neither one will be able to convince the other of their ideology. After the fight, their allies will usually need to SpotTheImposter to figure out who won.

* In ''Fanfic/TheStrexFamily'', the entirety of the titular family (except for Jezebel) is comprised of "doubles" or "multiples" of [[Podcast/WelcomeToNightVale Carlos the Scientist]]. There's both a {{Main/Meta}} and an InUniverse reason for this.

* The Alchemist's Apparatus is an ArtifactOfDoom that originated in the ''TabletopGame/{{Ravenloft}}'' setting, and creating an Evil Twin of a person is only ''one'' of the horrible things it can do. (It can also [[FreakyFridayFlip switch the souls of two victims into each others' bodies]], or worst of all, combine two souls into ''one'' body; the idea of having to share a body with your rival or hated enemy could well be a FateWorseThanDeath.)

!!Examples:

[[folder:Anime & Manga]]
* The entire premise of ''Anime/BloodPlus'' is of vampire-like creatures originating from two twins who were born from the womb of the Mother, and they turn out to be Saya and Diva, the heroine and villainess. They look alike except for the fact that Saya has red eyes, and Diva has blue eyes, referencing the colors of the veins and arteries in human beings.
* The evil twin was actually a major plot point for ''Manga/BlueSeed'' since Momiji Fujimiya's twin Kaede Kunikida was called in first to deal with the evil plant monsters, due to her family's bloodline power. But [[BrokenBird Kaede had become so depressed and bitter]] after being seen solely as the local BarrierMaiden and not as a person... that she ended up [[FakingTheDead faking her own death]] [[FaceHeelTurn to join the monsters' side]]. [[spoiler: Except not, [[TheMole she had her own plans]].]]
* Subverted in ''Manga/{{Chobits}}''. [[spoiler: Freya, Chii's sister, at first glance appears to be Chii's dark side/evil twin/dark thoughts, The EnemyWithin or just the highly-knowledgable SplitPersonality to Chii's innocence, but actually turns out to be looking out for Chii's safety, supplying her with information and intervening in preserving Chii when necessary.]]
* In ''Manga/DanceInTheVampireBund'', the [[TheChessmaster head of Telomere]] is revealed to be one to [[spoiler:Princess Mina Tepes herself. The former looks like the latter, ''smells'' like the latter, and can [[VampireMonarch command those blood-bound]] ''[[OhCrap to]]'' the latter. Aside from personality, the only way to tell them apart is their SuperMode ([[BeautyEqualsGoodness one]] changes into a statuesque woman with bat wings and [[{{Stripperiffic}} rather revealing]] spiked armor, from what we have seen the other changes into... [[EldritchAbomination something else]]).]]
* In ''Anime/DragonBallZ'':
** While [[IdenticalStranger not an actual twin]], Turles, from the third [[NonSerialMovie movie]] (''Anime/TheTreeOfMight''), looks and (in the original Japanese, where he was voiced by Creator/MasakoNozawa) sounds just like Goku. His goals are slightly more sophisticated versions of what Goku likes to do: enjoy fine foods and engage in battles. It's possible he was meant to represent what Goku would have grown up to be like had it not been for Grandpa Gohan.
** In the same vein, Majin Buu's two forms. The thin Buu, the one formed out of steam seems to act entirely evil, while the 'original' Fat Buu (aka Mr. Buu) often makes the 'good' choice, especially after the split. Though they don't look all that much alike until the reabsorption.
** [[GodJob Kami]] and [[OurDemonsAreDifferent Great Demon King Piccolo]] aren't quite twins, either, but close enough--Kami split the (then evil) Piccolo out of himself so he could be a benevolent God over Earth, and they're genetically identical. Furthermore, you could compare [[GenieInABottle Shen Long]] to his [[JackassGenie Black Star counterpart]].
** In ''Anime/DragonBallSuper'', Goku gets another [[IdenticalStranger evil doppelganger]] called Goku Black. In stark contrast to Goku, he is pure evil, being a sadistic mass-murderer who causes a second apocalypse in Future Trunks' BadFuture. Played with in that while his face and voice (he is also voiced by Creator/MasakoNozawa and Creator/SeanSchemmel) are almost identical to Goku's, Black is otherwise completely different in every other way: his fighting style is refined and technical, compared to Goku's somewhat crude and mostly self-taught style; he's lean (though still clearly muscled) where Goku is burly; and he speaks with a clear, very formal speech pattern (presented in the dub as a FakeBrit voice after going Super Saiyan Rosé), where Goku has a heavy, uneducated "hick" accent. Even Beerus remarks when watching them fight that despite similar appearances, Black clearly ''feels'' different from Goku. [[spoiler:The reason is because Goku Black is the end result after [[TimeyWimeyBall one alternate version of]] the Kaioshin-in-training [[BigBad Zamasu]] used the Super Dragon Balls to [[GrandTheftMe switch bodies with an alternate Goku]] and killed him]].
* Subverted in an episode of the second season of ''Anime/DuelMasters''... In a town populated entirely by sets of twins, it's suggested that one group is the evil twins... Until it's revealed that they're ''all'' evil.
* ''Manga/FairyTail'' tries to play Jellal up as Siegrain's evil(er) twin. The former reveals by the end of the arc he's introduced in, however, that [[spoiler:Siegrain was an illusion created to slip into the council and use their magic. They are actually one and the same. In truth he is actually inversion with Mystogan.]]
* Fran of ''Manga/FrankenFran'' was built by Dr. Madaraki to serve as his apprentice. When one of her assistants is killed in a way that she can't prevent, she discovers the existence of her "sister" Veronica, built to serve as Madaraki's bodyguard. Unlike Fran, who will not condone a person's death if it can be prevented, Veronica will quite enthusiastically kill someone if it benefits her. Fran very quickly shoves a RestrainingBolt into Veronica's brain, and she settles into being a devil's advocate for her sister.
** Slightly subverted in that "evil" assassin Veronica also believes in giving people quick and merciful deaths (she ''is'' a ColdSniper) while the "good" Fran will keep people [[FateWorseThanDeath alive at any cost,]] whether she has to [[AndIMustScream reduce a human being to a head attached to a hand by cramming as many organs as she can into their skull or connect an entire family (that Victoria blew up in the first place) into one giant organism.]]
** It is even more subverted if you realize that Veronica isn't that evil -- her problem is that she has a very twisted sense of morality. Not entirely her fault since she was created to be an assassin bodyguard in the first place.
** Gavrill seems to be older than Fran, but in appearance she's Fran gone the path of killing, drugs, crime and cannibalism, with only the clothes, a different hair cut and fangs making the two of them different. Different from her sister, she's a punk Tomboy who roams about the world, killing and stealing. Also, she is a shapeshifter, able to turn herself into a giant wolf-like creature. In recent manga, she's shown to have a soft spot for Amatsuka, so...
* In ''Manga/FushigiYuugi'', Suboshi and Amiboshi's society believed that ''both'' halves of a set of twin boys were evil, and so they were treated with disdain by most of their society. (And the only people that ''didn't'' buy into that nonsense, namely their parents, died.) This led to their being manipulated into accepting their roles as Seiryuu Seishi.
* Evil robotic Angels appeared in ''[[VideoGame/GalaxyAngel Galaxy Angel Moonlit Lovers]]'', after an evil robot Tact appeared in the first game. Strangely, the fake Angels were the ''only'' villains to be kept in the ''Anime/GalaxyAngel'' anime, and they only appeared for one episode.
* In ''Manga/GirlsBravo'' (only in the manga) Fukuyama has one [[spoiler: on the parallel dimension of Seiren]].
* Subverted in ''VisualNovel/HigurashiWhenTheyCry'': it's often impossible even for people who have watched the series more than once to tell whether [[spoiler:Shion or Mion]] is the evil twin. This makes them both seem evil, or at least sinister. [[spoiler:Shion]] is the one out of the two that does all the killing [[spoiler:(outside of Higurashi Gou at least)]] while forcing her sister to listen, however this is later double subverted as neither of them are actually evil. [[spoiler:Shion]] is [[BigBrotherInstinct overprotective]] of her friends to the point of being {{Yandere}} and is prone to [[spoiler:the HatePlague]], but for the most part she's quite sweet and docile.
* Yuuna's evil twin in ''Anime/{{Maburaho}}'' is magic-derived.
* ''Manga/MagicKnightRayearth 2'' has Nova, evil twin to titular protagonist Shidou Hikaru. Extremely bi-polar (which is putting it kindly as she switches constantly back and forth between cutesy, loving little child and homicidal psychopath personalities), and bat-shit insane. Created at the very instant that Hikaru and her fellow Knights were transported back to earth at the end of the first story, [[spoiler: Nova is actually a small portion of Hikaru's soul given a separate existence and consciousness of its own. Hikaru couldn't cope with all the crushing negative emotions and thoughts brought on by the trauma induced by the first story's ending, and thus her body expelled them all along with a bit of her being, which was given a life of its own via Cefiro's "willpower=reality" system of existence. In the end she accepts her restrained feelings and confronts Nova, which leads them to [[SplitPersonalityMerge become one person again]].]]
* In the manga adaptation to ''Anime/MobileFighterGGundam'', we're introduced to the Shading Gundam, an ebon-colored Shining Gundam controlled by an AI. The plan was to have the Mobile Fighter defeat Domon and force him to become its "pilot" (he'd be stuck in it -- the AI would do all the fighting) after he ended up nailing four draws in a row. Domon ended up defeating the unit by unleashing his SuperMode on it.
* ''Anime/MobileSuitGundamSEED'' featured Rau Le Creuset, an unstable clone of secondary character Mu La Flaga's father. While they initially don't seem similar, when Rau removes his mask, he reveals his identical face. Rau's feelings that his existence was an abomination and nihilism about humanity in general led him to attempt to wipe out all of humanity, Coordinator and Natural both. Considering that he got his last name from the french word of Theatre/TheCrucible...Yeah, he's [[WithGreatPowerComesGreatInsanity a very screwed up guy]].
* ''Anime/{{Monster}}'' has the titular Johan Liebert, ''HalfIdenticalTwin'' of Anna Liebert (Nina Fortner).
* In ''Manga/NinjaNonsense'', Onsokumaru creates an evil duplicate when he attempts to use a Ninja Clone technique. Of course, Onsokumaru being Onsokumaru, the twin isn't really any worse than the original.
* ''Manga/OnePiece'' introduces a an evil set of not twins, but ''fraternal quadruplets''. [[spoiler:Vinsmokes Ichiji, Niji, and Yonji, the older and younger brothers of Sanji of the Straw Hat Pirates, respectively, are ''nothing'' like him -- while they do share his cool head, his [[HandsomeLech perverted tendencies]], and his [[HotBlooded temper]], they have none of his compassion and care for no one but themselves. As children, they viciously bullied Sanji for continuously displaying compassion and for being a weak waste of space, something that their [[AbusiveParents father]], [[BloodKnight Judge]], condoned. It's later revealed that all of the Vinsmoke quadruplets, including Sanji, were physically and psychologically altered by Judge in utero in an attempt to turn them into the perfect {{Super Soldier}}s, but their mother, Sora, secretly intervened by taking a drug that reversed gene-altering surgeries so she can protect their humanity. Only Sanji was successfully saved, while his brothers only have but a tiny shred of humanity left. They can't understand why Sanji continues to act kind to others, because they were programmed that way.]]
* Hana from ''Papillion Hana To Cho'' is glamorous, popular, and the decided [[ParentalFavoritism favorite]] over her CountryMouse twin sister Ageha until Ageha discovered a tiny bit of confidence after reuniting with an old (male) friend. Hana then steals said friend by using Ageha's weak stomach to get her out of the way with a little HiddenDepths sweettalk. Things get worse after Ageha gets over the guy, improves her relationship with her [[WellDoneSonGuy Well Done Daughter Mom]] and hooks up with another guy: [[spoiler: ''Hana disguises herself as Ageha'' while Ageha is sick and is so irritating that he breaks up with Ageha the next day. Due to said guy being [[HotForStudent her school counselor]] and off-limits in the first place, it's unlikely Ageha will ever know the real reason they broke up.]]
* Ranma from ''Manga/RanmaOneHalf'' gets a mischievous copy of his female self from a MagicMirror, who is incapable of gender-bending and [[ScrewYourself happy to learn that Ranma is a guy]]. They almost manage to seal the copy in another magic mirror, but instead a ''second'' copy of Ranma is created, this one male. The two copies then hook up, which at least keeps them out of trouble.
* ''Manga/SaintSeiya'' has Gemini Saga and Gemini/Sea Dragon Kanon, each of them is the evil twin to the other in different parts of the story. The Black Saints not only shares the same armor as the protagonists except theirs is black but for unexplained reasons also share the exact same physical appearance as their good counterparts. This is all the most jarring in the case of the Black Phoenix mooks that come in mass and all look exactly the same, that is to say like the main Phoenix. All the attacks of the evil counterparts also are reminiscent of the good ones albeit more evil. For example the attack of Black Pegasus, Ankoku Ryu Sei Ken, is similar to the Ryu Sei Ken of the main Pegasus except it slowly contaminates its victims eventually making them suffocate to death. Likewise, the Black Andromeda's attack has its chains turning into snakes feeding on the victim's blood.
** In ''Manga/SaintSeiyaTheLostCanvas'', [[spoiler:Gemini Aspros]] to [[spoiler:Gemini Defteros]]. Slightly [[SubvertedTrope Subverted]] in that [[spoiler:[[TheUnfavourite Defteros]]]] is introduced as a "demon", and, when younger, was believed to carry ill omen with him by the Sanctuary inhabitants, but it was actually [[spoiler:[[TheChosenOne his]] [[TheAce brother]]]] who turned out to be the evil one.
** This is a staple in Saint Seiya franchise , save for ''Manga/SaintSeiyaNextDimension'' as InUniverse, it is believed that each pair of Gemini Saint is born cursed, one is evil and one is good, and they will fight each other until the other dies. In ''Anime/SaintSeiyaOmega''Gemini Paradox is this to her sister Integra, [[TheFatalist who decided to accept her fate as the "evil" Gemini Saint.]] Integra in contrast flat-out [[ScrewDestiny defies that fate]] and claims if that is the fate the stars set up for them, [[SugarWiki/MomentOfAwesome she will destroy the stars itself.]]
* ''Manga/{{Saiyuki}}'': Evil twins of the Sanzo-ikkou were created by a demon who rationalized that the best chance of beating them was pitting them against themselves. This promptly turns into comedy when Hakkai, Gojyo, and Goku realize that they have a chance to beat up on a Sanzo-lookalike. Also used as AnAesop, as when they win against their clones -- who are wearing their clothes from the first season -- they explain to the confused demon that they are not the same people as they were when the clones were created and they grow and learn as blah blah blah.
* ''Manga/ShamanKing:'' [[spoiler:BigBad Hao/Zeke Asakura is Yoh's evil twin who hates and wants to destroy humanity]].
* The third ''Manga/SgtFrog'' movie featured a "Dark Keroro" generated by some lost alien technology.
* Subverted in a stand-alone episode of ''LightNovel/{{Slayers}}''. A villain uses an enchanted mirror to create dark duplicates of his victims, including main characters Lina and Naga. The clones are supposed to be the "reverse" of the originals -- which, to the bad guy's surprise, means the copies are meek, modest and peaceful, not evil.
* Takaya from ''Anime/TekkamanBlade'' quite literally has an evil twin. His twin brother Shinya succesfully completed the Tekkaman conversion process, becoming Tekkaman Evil and the main villain's [[TheDragon dragon]]. At one point, he gets in close to Space Knight HQ in order to launch a surprise attack by dressing up as his brother and playing on his celebrity status amongst the human troops.
* Near the end of the ''Manga/TigerMask'' manga, Tiger's Cave last fighter is a ''very'' convincing fake Tiger Mask, pretty much identical to him in build, weight, fighting style ({{Justified}} as they were both trained by Tiger's Cave), and even ''voice'' (Tiger Mask himself was surprised when he heard his voice, and couldn't tell the difference). Aside for the fact Tiger Mask had started fighting cleanly, the only visible difference was that the real Tiger Mask had plastic fangs on his mask and the imposter's had steel ones. [[spoiler: That's how the promoter of their match can tell the difference after Tiger Mask loses the armband he wore for the occasion and gets pissed enough to revert to his Tiger's Cave training]].
* Knives in ''Manga/{{Trigun}}'', Cain in ''LightNovel/TrinityBlood'', and Aion in ''Manga/ChronoCrusade''. Apparently, being a guy who's the hero's evil twin means being a genocidal psycho and having a brother complex the size of the Empire State Building. Knives, Cain and Aion are anime's unholy trinity of Evil Twins. The three of them are practically [[{{Expy}} expies]] of whomever came first. Roshel/Rociel in ''Manga/AngelSanctuary'' is very much like them too, with the difference that Alexiel is female and his non-identical twin. Also a partial subversion in that [[DarkIsNotEvil Rociel is a supreme angel and Alexiel, a fallen one]].
* Throughout ''Manga/TsubasaReservoirChronicle'', there are sinister flashes of another Syaoran floating in a tank of water in the villain's base, who seems to be "influencing" the Syaoran who is traveling with the good guys. In the manga, the truth is revealed. [[spoiler:The Syaoran in the tank is the "original" Syaoran, and the one traveling with them is really a [[TheHeartless heartless]] clone whose emotions were inspired by psychic connection. Upon the good Syaoran's release, our Evil Twin Syaoran succumbs to his programming.]]
* ''Manga/VampireGame'' plays around with this trope. In the kingdom of Razenia, twins are considered bad luck, and so when twins are born, one of them is chosen as "evil" and is abandoned. In this case, the "good" twin is the crown prince... and the "bad" twin turns out to be [[spoiler: Vord]], one of the nicest characters in the series.
* Zero's evil twin Ichiru in ''Manga/VampireKnight''.
* In ''Manhwa/WitchHunter'', it gets more complicated because this manhwa does not only features a pair of twins, but a set of triplets. Bairong Empire have three WarriorPrince, Lee, Yue, and Xing, and [[AsskickingEqualsAuthority the strongest will the be next emperor of the empire]]. Yue, the middle prince, is the strongest one, but he doesn't want to become the emperor, when his brothers are vying for that position. Under his depression and envy, the [[TheEmperor previous emperor]], [[ArchnemesisDad their father]], pushed Lee to become emperor by killing Yue. Obsessed with becoming the next emperor, and by extension killing Yue, Lee fell squarely to this trope. Then after a fierce battle and his failed attempt to kill Yue, Lee left the empire. Then Yue to reveals his desire to travel the world, performed a TwinSwitch with Xing so he can leave the empire and Xing become the emperor. But being emperor doesn't do Xing justice, nor he can bring it to people. That and several more processes of TraumaCongaLine [[BreakTheCutie breaks him,]] , and under his mental vulnerability moments, he is on the receiving end of a GrandTheftMe from his ArchNemesisDad, making Xing is this trope too for Yue. After four years, the triplets face each other again, this time Lee is the strongest and managed to knock Yue fainted. Lee is actually aware of what happened to Xing, and planned the attack to gather the triplets. When Xing is dying,he requested Yue to kill him, when Yue is waking up, all he see is Xing's corpse, and he swore that he will as Xing for the rest of his life, and he will kill Lee.
* ''Anime/YuGiOhArcV'': Yuya, Yuto, Yugo and Yuri were all originally one person, [[spoiler:Zarc]]. After being seperated into four entities across four [[spoiler:new]] dimensions, Yuri is the only who grew up as an evil person. The environment and circumstances around his education turned him into a PsychoForHire, a BloodKnight and OmnicidalManiac, added with the heavy implication that [[spoiler:Zarc']]s darkness inside him and Starve Venom Fusion Dragon had the greatest influence on them than on the others.
* Zeon from ''Manga/ZatchBell'', Evil Twin to the title character. Angry at not being able to have a DangerousForbiddenTechnique, which was given to his IdiotHero of a brother. Has a RedemptionEqualsDeath moment

[[folder:Comic Books]]
* ''ComicBook/BatmanBlackAndWhite'': In "Two of a Kind", Harvey "Two-Face" Dent goes straight and gets reconstructive surgery, and falls in love. Alas, his villain theme continues to haunt him, as it turns out his fiancée has an emotionally-disturbed identical twin sister. Things go rapidly downhill from there.
* In ''ComicBook/JaxEpochAndTheQuickenForbidden'', while Jax finds out that a week has passed despite only being Realmsend for a couple minutes, she also finds out that her family and friends mistook her evil twin as the real her while she was gone
* ''Franchise/{{Superman}}'':
** The entire [[BizarroUniverse Bizarro World]] in the pre-ComicBook/{{Crisis|on Infinite Earths}} Superman mythos can be considered a form of Evil Twin by AppliedPhlebotinum, though it slowly changed from "evil opposite" to "goofy opposite".
** Oddly, Bizarro himself had an Evil Twin, in the form of Bizarro-Bizarro, who looked like Superman, spoke like Bizarro, and acted like a {{Jerkass}}.
** In ''ComicBook/AllStarSuperman'', there's Zibarro, who's the most intelligent man on Bizarro World. Though unlike Bizarro-Bizarro, he isn't evil and is mostly just depressed about being the only person on Htrae who appreciates beauty.
** In addition to Bizarro, Superman has several other evil twins. There is Hank Henshaw, an astronaut-turned-EnergyBeing who used his powers to create a body that was equal parts Kryptonian cybernetics and Superman clone. Then there's Superboy-Prime, a surviving Superboy from an alternate, Pre-Crisis Earth, who descended into villainy after seeing his universe destroyed. Both of them are far stronger than Superman, courtesy of Henshaw's cybernetics, and Prime having all the powers of the Pre-Crisis Superman.
** Ultraman is Superman's evil twin from a MirrorUniverse, which features evil counterparts of the entire Justice League.
** In ''ComicBook/KryptoniteNevermore'', Superman meets a sand creature which looks right like Superman and appears to be malevolent.
--->'''Superman:''' I don't know what you are, either! You seem... like a dark twin of myself...
* [[ComicBook/TheSimpsons The Simpsons Comics]] Issue #60 invokes this when Professor Frink creates an "unethical clone" who exists to do highly unethical science experiments. His only real notable difference is that he wears a black lab coat.
--->'''Frink:''' He's like an ''Evil Twin'' but without all the killing and the maiming and the《gah-hoy》 hurting!
* ComicBook/{{Supergirl}} too.
** In UsefulNotes/{{the Silver Age|of Comic Books}} there was her EnemyWithout Satan Girl in ''ComicBook/LegionOfSuperHeroes'', created by Red Kryptonite.
** In ''[[ComicBook/Supergirl1982 her second solo book]]'' Supergirl got an evil clone. Her clone was eventually depowered and just wanted to live a normal life. Kara promised to help her establish a new identity for herself.
** ''[[ComicBook/Supergirl2005 Post-Crisis Supergirl]]'' went through a similar story which created "Dark Supergirl", although she ended up as more of an EnemyWithin.
** And then there's ComicBook/{{Bizarrogirl}}, who causes chaos on Earth because she's just as confused as Kara but doesn't deal with it as well.
** Before that, Earth-Angel Supergirl had her own Bizarro-Supergirl, and also fought Matrix, her own ''former body''! In fact, the shapeshifting Matrix-Supergirl, in one of her more confused periods, was ''also'' an evil twin of Superman...
** A MirrorUniverse Ultragirl has also been seen, but thus far Kara hasn't had to deal with her).
* The Creator/MarvelComics series ''ComicBook/{{Exiles}}'' inverts this. The reality-hopping team of the title need to defeat the evil Hyperion... so they fetch two ''good'' versions of him from other universes.
* In the ''ComicBook/TransformersShatteredGlass'' comic series, Cliffjumper is transported to a BizarroUniverse where the Autobots are evil and the Decepticons are good. In a bit of parody/lampshading, evil Rodimus even got himself a ''goatee'', saying that he feels it makes him feel distinguished.
* Newspaper comic inversion: In ''ComicStrip/CalvinAndHobbes'', Calvin once made a perfect copy of himself to do his work for him, only to find out that his double was even more troublesome than the original, since he realized that he could commit any mischief and the original would get all the blame. A later storyline had Calvin making a duplicate of only his ''good'' side... who among other things starts trying to make friends with the girl next door Calvin's always trying to humiliate. Calvin confronts his good counterpart and provokes him into a fight. Angered, Calvin's Good Side decides that he's going to "tear [Calvin] limb from-", and promptly disappears with the exclamation "Oops, I had an evil thought!" Hobbes then declares: "Another casualty of Applied Metaphysics."
* Franchise/TheDCU has Earth-3, a MirrorUniverse of Evil Twins and Evil Counterparts, including Alexander Luthor Senior, the good twin of ComicBook/LexLuthor. President John Wilkes Booth was assassinated by Union sympathizer Abraham Lincoln and Benedict Arnold is on the dollar bill, too.
** Lex Luthor also had a Good Twin in the Pocket Universe, as revealed in ''ComicBook/TheSupergirlSaga''. Although this was more the case of him being a version of Pre-Crisis Earth-1 Lex Luthor [[ForWantOfANail not meeting up with Superboy and thus not becoming a criminal in the process]].
* Subverted in the comic book ''ComicBook/{{Hellblazer}}'', in which it is revealed that the series's star, John Constantine ''is'' the 'evil' twin, having strangled his brother in the womb with his own umbilical cord. He later crossed over to a parallel universe, where his brother had become an incredibly powerful and celebrated magus.
** When John meets his ancestor Johanna Constantine in her miniseries, it's hinted that it's the Laughing Magician entity that reincarnates in their bloodline which causes them to kill their twins in the womb. Later the trope is played straight when his demonic half appears in the comic.
* In the comic book ''ComicBook/GoldDigger,'' the two main characters (Gina and her adopted were-cheetah sister, Brittany) accidentally create a clone of themselves that shares traits from both of them, including their memories, in an attempt to remove a curse from themselves. After several battles with the clone, Gina realizes that the reason the clone is trying to kill them is because the curse is inhabiting the clone, motivating its irrational desire to kill them. Her father, an arch-mage, happens to show up in time to dispel the curse, and the clone is invited to join the family and given the name ''Brianna'' (a portmanteau of ''Brittany'' and ''Gina''). Later on, the Djinn Madrid uses magics to disguise herself as Gina so well she can fool empaths. This backfires though, erasing her original form, and since then, Madrid has been slowly overwritten by Gina, to the point [[spoiler: that a future version of herself traveled to the edge of existence and beyond to save her 'baby sister']]
* In ''ComicBook/SonicTheHedgehogArchieComics'', as well as having Shadow, and various Metal Sonics, there is the alternate world known as Moebius, home to kindly Dr. Kintobor (Robotnik's "evil twin") and the Anti-Freedom Fighters, the evil twins of the Freedom Fighters. Their leader was Anti-Sonic, the evil twin of Sonic himself, who proved to be very inept -- despite helping Alicia (the evil Sally) depose of her father, he hadn't won a single fight since. Amongst his failures were accidentally giving the Sonic Underground Robotnik the Bio Borg instead of Robo-Robotnik and getting struck down by Antoine ''by accident''. Compare this to Anti-Antione (later known as Patch), Antione's evil twin, who successfully replaced Antoine, nearly ruined his relationship with Bunnie, poisoned King Acorn, killed Antoine's father and nearly took the throne before Sonic stepped in. Thankfully, Anti-Sonic got better after he TookALevelInBadass by becoming Scourge.
** The Anti-Freedom Fighters got better afterwards when Anti-Sonic became Scourge. After Sonic gives him TheReasonYouSuckSpeech, he decides to apply himself to what he wants to do and undergoes a form of rebirth, to where he no longer resembles Sonic (he turned green from the Master Emerald and got some scars on his chest). He then proceeds ''conquer'' Moebius, becoming king and reforming his gang into the Suppression Squad, with all of them taking new names as a result. They attempt a takeover of Mobius, but only get as far as taking over Freedom HQ temporarily. However, their shipshape turned into a GoneHorriblyRight as Miles, Tails' Evil Twin, conspires to overthrow Scourge and successfully takes over the Squad. Scourge now leads the Destructix.
* ComicBook/TheFlash (Barry Allen version) had an Evil Twin in the form of Eobard Thawne, who had plastic surgery to resemble him, and then traveled back from the 25th century to become Professor Zoom, the Reverse-Flash. A later {{Retcon}} would reveal that Zoom was descended from Malcolm Thawne, aka Cobalt Blue, who really ''was'' Barry's estranged twin brother, but had completely different powers (taught by his adoptive grandmother.)
** In the 30th century Eobard's descendant created Inertia, a clone of Barry's ([[TangledFamilyTree and his own]]) grandson Impulse, and sent him back in time to fight his counterpart.
** For a while after he reformed, Dr. Alchemy (Albert Desmond) seemed to have a psychic twin named Alvin who took up his tools and identity, only becoming the evil twin after Albert became the good one. "Alvin" turned out to be the Philosopher's Stone's physical manifestation of his subconscious desire to continue a life of crime.
* Pretty much every member of the ''Comicbook/XMen'' has had at least one Evil Twin at some point, thanks to any or all of alternate realities, android duplicates, Skrulls and insane geneticists with a thing about cloning. Among the more notable examples...
** Madelyne Pryor was a clone of the at-the-time deceased ComicBook/JeanGrey who was thought to be a normal human who simply had a strong resemblance to Jean (and, in fact, this was the original plan for her), but went insane and discovered her latent telepathic and telekinetic powers when Jean turned up alive and Madelyne discovered her origins.
** Beast's evil twin from an alternate dimension, known as the Dark Beast, made his way into the mainstream universe and has been a recurring villain since the 1990s. Beast also had at least two other Evil Twins, but they didn't last.
** Gambit has New Sun, a version of himself from another universe who never got his PowerIncontinence fixed by Mr Sinister and became a PersonOfMassDestruction as a result. What's more New Sun has actually been killing all alternate versions of himself ''Film/TheOne''-style until he was stopped by 616 Gambit.
** Joseph was a much younger 'copy' of Magneto. Since at the time Magneto was villainous and Joseph was an X-Man, he counts as a ''Good'' Twin.
** At one point half the team was replaced by the shape-shifting aliens known as Skrulls (this was back before everyone was doing it). While most of them remained in captivity while their doubles were running around making trouble, the story culminated in Professor X handing a simultaneous physical and mental beatdown to his double. While naked.
** Professor X has an actual evil twin, Cassandra Nova. It's later explained that ''everyone'' has an evil twin, a psychic construct the Shi'ar call the ''mummudrai'' that they face off with before birth. Xavier killed Nova in the womb, but, because she was the Evil Twin of an extremely powerful psychic, she managed to survive as a mass of miscarried fetal tissue and reconstruct herself to the point where she could enact revenge.
** ComicBook/{{Cable}} and Stryfe, although Cable seems to be the Good Twin. [[TangledFamilyTree It's confusing.]]
* During the Marvel CrisisCrossover the ''Infinity War'' with the entity called the Magus trying to snuff reality, he distracted all the superheroes by simultaneously creating Evil Twins of ''every superhero in the Marvel Universe''.
** It had a few interesting moments in the 'crossover' issues; one issue of ''ComicBook/FantasticFour'' had the Human Torch being pursued by doppelgangers of several X-Men, as well as his own 'twin'; Once Torch found out that not a single one of them was human, or even truly alive, he started flash-frying them like popcorn. He ended up missing his own twin, who merely looked at him and said he had no more intention of trying to absorb him, because as he put it before he left, "You're already worse than anything I could ever make you." Thing even later yelled at him that "You ain't no flaming version of the Punisher!" The irony of this is that Torch was one of the few that ended up not being defeated by the doppelgangers in the final issue, whereas the Thing was defeated not even a few minutes later by the dark version of Invisible Woman.
** Rage of the New Warriors ended up inadvertently absorbing his own twin, which had very little effect on him, surprisingly enough.
** Most of the Doppelgangers disappeared when the Magus was defeated, but a few survived the crossover and continued to fight their counterparts, including include Spider-Doppelganger (ComicBook/SpiderMan), Moonshade (ComicBook/MoonKnight) and Hellspawn (ComicBook/{{Daredevil}}).
* Likewise the ''ComicBook/AvengersForever'' series ends with a no punches pulled battle between every good Avenger that can exist, and every evil Avenger that can exist.
** Infinity War, the above-mentioned CrisisCrossover,
* The ComicBook/{{Excalibur}} villains Lightning Squad were an alternate version of the team (minus Rachel, who has no counterpart in the multiverse) from a reality where the Nazis won World War Two. Hauptmann Englande was a cold and ruthless Nazi darling, Meggan had this [[TheBaroness Baroness]] thing going on, and Nightcrawler was a rapist; but the most chilling reflection was Jewish Shadowcat, who was a bald, emaciated slave to the regime.
* Inverted in Franchise/TheDCU comic series ''Kobra'', whose eponymous VillainProtagonist ''was'' the Evil Twin. His wicked schemes were always foiled by his Good Twin, from whom he'd been separated at birth. Shortly after the series was canceled, Kobra killed off his twin. Recently, however, Kobra himself was KilledOffForReal by a rogue superhero, and his minions have resurrected the good twin, brainwashed him to become evil, and made him the new Kobra.
* In the final issue of the latest ''Arkham Asylum'' miniseries, Jeremiah Arkham meets the Jester. It transpires that the "Jester" is just a projection of what Jeremiah imagines himself to be, under influence of a psychotropic drug given to him by... the Joker.
-->'''Jester''': Think of me as the Joker's evil twin.\\
'''Arkham''': The ''Joker's'' evil twin?\\
'''Jester''': Scary, ain't it?
* Played straight in the ''ComicBook/SquadronSupreme'' limited series, when Hyperion is replaced by his Evil Twin as part of a larger EvilPlan.
* ''ComicBook/JudgeDredd'' is abound with evil twin foils for Joe Dredd himself. Also often a DeliberatelyBadExample to make Joseph's [[JudgeJuryAndExecutioner zero-tolerance methods]] more acceptable by comparison. There are aversions, such as the second Rico clone (who becomes an outstanding Judge in his own right) but they are outnumbered by the insane or evil ones.
** Dredd himself is a clone of Judge Fargo. Dredd may or may not be considered "evil", but [[spoiler:he is definitely far more authoritarian than his clone father. Fargo wanted to restore American liberties at some point, but Dredd has long ago come to the conclusion that order and justice are more important]].
** His clone brother Rico and Rico's identical MirrorUniverse double are straight examples. Both of these became {{Dirty Cop}}s who had to be put down by Dredd himself.
** The Judda are a ''whole army'' of evil clones of him and other judges. Their creator, Morton Judd, was excommunicated from the Justice Department because his plans were far too radical for Fargo--suggesting to clone and replace the entire civilian population with more obedient versions.
** His supposedly rehabilitated clone Kraken gets BrainwashedAndCrazy. Formerly a Judda member, he was slowly possessed by the Sister of Death, who used him to resurrect the Dark Judges. Then he was forced to murder millions of people in this state, begging Dredd to kill him when he was finally freed of their control. [[MercyKill Dredd obliges]].
** His MirrorUniverse counterpart is a comically liberal counterpart to the fascist we know.
** His evil future self gets killed and dragged back to the present before getting up and going on a rampage. Dredd frequently {{Lampshade|Hanging}}s this by worrying if it's "something [[VillainousLineage in the blood]]".
** Subverted with Judge Death, who was intentionally made to mirror Dredd in conception, right down to being TheFaceless and a LanternJawOfJustice sporting a SlasherSmile, but later stories establish that they have completely different family backgrounds.
* In the ''ComicBook/{{Tintin}}'' book ''[[Recap/TintinKingOttokarsSceptre King Ottokar's Sceptre]]'', the conspiracy to steal the sceptre involves [[spoiler:kidnapping Professor Alembick and replacing him with his twin brother]].
* ComicBook/TheSmurfs deal with evil duplicates of themselves in ''The Smurf Menace'' that were created by Papa Smurf in order to get the Smurfs to stop fighting with each other. Papa Smurf's counterpart, the Great Leader, is more of an authoritarian figure instead of a paternal one. Gray Greedy is selfishly hungry for food, eating whatever normal Greedy is eating right out of his hands. Gray Jokey has nastier pranks than normal Jokey. Gray Handy doesn't seem to care about the quality of his work. Gray Smurfette is rather cold and snide towards her normal counterpart. About the only one who doesn't have an issue with his Gray Smurf counterpart is Brainy, who seems to admire how ruthless his other self is in catching Smurfs shirking off on their duties.
** Inverted in one story where the Smurfs meet Gargamel's good twin brother Gourmelin.
* In the ''Franchise/DoctorWhoExpandedUniverse'' comic ''The Forgotten'', a brain parasite attacking the Tenth Doctor takes on the appearance of an evil twin version of him, complete with beard and black pinstripe suit, and claims to be the Valeyard. The real Doctor immediately mocks the parasite's complete lack of originality.
* Used as an AuthorsSavingThrow in ''[[ComicBook/CaptainCarrotAndHisAmazingZooCrew Captain Carrot and the Final Ark]]'': the Alley-Kat-Abra who killed Little Cheese was actually "Dark Alley", an Evil Twin created by Feline Faust.
* In the ''ComicBook/PocketGod'' [[ChristmasSpecial Christmas issue]], Nooby is cloned by [[BadSanta Red]]. While most of the clones are deformed and [[MadeOfExplodium explosive]], the [[SuperPrototype first one]] is an intelligent, but malevolent clone named Newbie. He tries to harm Nooby, but is defeated when an icicle [[ImpaledWithExtremePrejudice impales him in the chest]] and he [[DisneyVillainDeath falls into the water]]. [[spoiler: He survives and becomes the main antagonist in the story arc, "A Tribe Called Quest".]]
* ComicStrip/{{Nero}}: Happens a lot in this comic strip:
** In "Het Geheim van Bakkendoen" a good and an evil twin brother cause confusion.
** In "De Verschrikkelijke Tweeling" two dwarf brothers, Manu the good one and Panu the evil one cause a lot of confusion.
** A good and evil twin brother also appear in "De Krabbekokers".
** A good and evil twin brother appear again in "Baringo".
* Negative Forbush Man from "Marvel What The...". Of course, played for laughs.
* In ''ComicStrip/TheWackyAdventuresOfPedro'', Pedro's efforts in constructing a mirror portal turn his reflection into a troublemaker named [[SdrawkcabName Ordep]]. Inverted when the mirror later turns Ordep's reflection into the goody-goody [[SignificantAnagram Erpod]].
* Franchise/SpiderMan has had to deal with a few of his own:
** ComicBook/{{Venom}}, possibly the most famous example in comics.
** The Spider-Doppelganger.
** Kaine, a defective clone of Peter.
** Spidercide, an insane shapeshifting clone of Peter.
* ''Franchise/WonderWoman'':
** ''ComicBook/WonderWoman1942'': Hynota is Seva's evil twin, and uses her powers to make Serva even forget that she has an indentical twin when switching palces with her to hide and disguise her crimes.
** [[spoiler:Vance Trotter's twin brother Globe kills their uncle for the inheritance.]]
* ''ComicBook/Batman66'': Eggbert is Alfred's cousin but otherwise fits.
* ''ComicBook/TheCallOfCRusso'': The great musician C'Rrusso is the evil twin to the rival musician D'Mmingo, who looks exactly like him. For good measure, one wears black, and the other white. This is because they're really the same person, since both are embodiments of the monster-god Ar-Finn's conflicting desires to either wake up or keep on sleeping and must battle each other for supremacy.
* ''ComicBook/{{Alix}}'' has Arbaces' identical brother, who is slightly less of an asshole to the titular hero, but they're still enemies.
[[/folder]]

[[folder:Comic Strips]]
* [[https://garfield.com/comic/2011/12/04 When Jon tells]] ''ComicStrip/{{Garfield}}'' that SantaClaus has been watching him, he writes a letter suggesting Santa might have seen his evil twin.
* ''ComicStrip/{{Doonesbury}}'' had George HW Bush's evil twin, Skippy, as a recurring character during his Vice-Presidency and Presidency. Since Trudeau considered Bush such a bland non-entity that his representation in the comic was just a voice coming out of an asterisk floating in mid-air, Skippy appeared completely identical.
* ComicStrip/MandrakeTheMagician has an evil twin brother named Derek.
* In a series of ''ComicStrip/CalvinAndHobbes'' strips, Calvin creates a machine to duplicate himself, then is astonished when the twin doesn't want to just obey him. Turns out it's an ''exact'' duplicate: a twin just as evil as Calvin himself.
** His duplicator returns in another story, where Calvin has added an "ethicator" to decide whether his clone should be good or evil. It ends up not helping.
[[/folder]]

[[folder:Literature]]
* ''Literature/{{GONE}} series'': [[NameOfCain Caine]] Soren is the estranged twin of the hero, Sam Temple. One of his biggest ambitions is to kill said hero.
* In Creator/LoisMcMasterBujold's ''Literature/VorkosiganSaga'': After the ''very'' distinctive-looking Miles Vorkosigan claims (as a coverup for his secret identity) that he has a clone running around, it turns out he ''does'' have one, who's been trained to take over his life. It turns out that the twin, Mark, isn't necessarily ''evil'', just brainwashed (plus has SplitPersonality, with the personalities generally being pretty dark). Lampshaded in ''Mirror Dance'': "Some people have evil twins. I am not so lucky. I have an ''idiot'' twin."
* In Creator/WilliamSleator's ''Literature/TheDuplicate'', the clone isn't really evil, just resentful of being treated as a clone (he has all the memories of the original, so he believes he is the original). However, this leads him to [[spoiler:make another clone, who really is evil (or at least not exactly sane)]].
* In ''Literature/{{Haunted 1988}}'' there are some horrendous acts going on, and the family says it's Christina's evil twin sister who is doing it. [[spoiler: Except there is no evil twin -- it is just Christina.]]
* In Jasper Fforde's ''Literature/ThursdayNext : First Among Sequels'', Thursday is asked to train two fictional versions of herself as Jurisfiction agents. [[spoiler:One of them, being from an adaptation that emphasized sex and violence, is a scheming, sarcastic bitch.]]
* Oddly doubled variation: the twins from ''Literature/SweetValleyHigh'' were menaced by another pair of twins who looked just like them, who wanted to take over their lives.
* In Matt Ruff's ''Literature/SewerGasAndElectric'', the villains attempt to replace a hero with a robotic copy of himself. His assistant is able to distinguish the two when [[spoiler: the robot looks up and exclaims how worried he was that she'd be hurt, while the real version, despite the firefight going on outside, keeps playing a video game.]]
* The ''Literature/StarTrekDeepSpaceNineRelaunch'' novel ''Fearful Symmetry'' is all over this trope. You may want to draw diagrams for this. Back in the episode "Second Skin", Major Kira was surgically altered to look like a Cardassian and told she was Iliana Ghemor, an Obsidian Order agent who'd been given FakeMemories as a DeepCoverAgent. This was [[ThePlan planned by the Obsidian Order to gain evidence against Iliana's father]] was an anti-military-rule dissident. In this novel, the ''real'' Iliana shows up, and it turns out she did indeed have her memories and appearance altered to resemble Kira, before Gul Dukat called a halt to the operation in memory of Kira's mother. He then kept Iliana captive all this time, taking his ... confused (not to say disturbing)... feelings about Kira out on her. Iliana is now AxCrazy with a side-order of AmnesiacDissonance and wants revenge on anyone else who claims to be Kira Nerys. She starts off by killing Kira's ''other'' evil twin, Intendant Kira from the MirrorUniverse, and taking her place. "Our" Kira, meanwhile, is being aided by Iliana's ''good'' twin; she's a MirrorUniverse version whose father was the ruthless head of the Obsidian Order, but who defied him and joined [[LaResistance the Terran Rebellion]]. Got all that? If this had actually been part of the TV series, Nana Visitor would be playing four roles.
** The relaunch novels also include the character of Gul Macet, another Cardassian played by Marc Alaimo in an episode of ''Series/StarTrekTheNextGeneration''. He's Dukat's cousin and they are almost identical (the primary difference is that Macet is one of the only Cardassians ever seen with facial hair), but Macet is a decent and honorable man, making him the Good Twin.
* Harry Dresden of ''Literature/TheDresdenFiles'' has an entity that fits the evil-twin bill (based on Harry's wiseass and slightly lowbrow nature): more cultured, better groomed, more thoughtful, goatee. The catch is, the guy's neither evil, twin, nor real-he's a representation of Harry's subconscious, who takes the opportunity to lecture Harry whenever he's really on the ropes and unconscious.
** There is also [[spoiler: Evil Bob,]] who also functions as a SuperpoweredEvilSide. Justified, due to the owner of [[spoiler: his skull]] determining his personality. So for Harry (as a teenager), [[spoiler:Bob is a wisecracking perverted genius sidekick,]] while for [[spoiler:Kemmler or his disciples, the wizards who give the ''White Council'' nightmares,]] he is a terrifying [[spoiler:spirit who can kill people with his ''mind.'']]
* OlderThanPrint: The "false Guenevere" in the legends of Myth/KingArthur, who is the true Guenevere's identical ''half''-sister (somehow), and plots to take her sister's place as queen.
* Happens literally in ''Literature/RangersApprentice'', although this is something of a subversion in that [[spoiler:Halt's]] twin is more petty and pathetic than outright evil, and the dichotomy is one of competent/incompetent rather than good/bad.
* Unusually, Creator/EdgarAllanPoe wrote a serious inversion, "William Wilson". The twins even have the same ''name''. This is because the good twin is actually [[spoiler: the narrator's conscience. This gets confusing and symbolic when the evil twin ''murders'' him.]]
* ''Literature/MikeHammer'': "One Lonely Night" by Creator/MickeySpillane. An up-and-coming politician campaigning against corruption and DirtyCommunists hires Mike Hammer to catch his insane twin brother, who committed a murder in public in apparent attempt to destroy his reputation (fortunately, the politician was giving a speech before hundreds of people at the time). [[spoiler:Inverted in that Mike discovers the brother is a ''fraternal'' twin who doesn't look anything like the politician, and it was actually the politician who committed the murder -- he hired a look-alike actor to give the speech and thus take suspicion off of himself.]]
* The novella ''The Wife of Martin Guerre'' subverts this: Bertrande's husband goes off to adventure and avoid farm life. 8 years later he returns and is noticeably kinder and softer in manner. When she questions him, he responds that WarIsHell, that life is to be enjoyed. She feels troubled about this as she [[SarcasmMode loves]] him, but feels he is not her real husband and cannot stand to live a pleasant lie. Despite having a child with him, she eventually has him put on trial for impersonating Martin Guerre. The real [[JerkAss Martin]] [[BloodKnight Guerre]] shows up at the end of the trial, confirms that the man is an impostor, and calls her out for betraying both him as her husband, and the other guy whom she had admitted to loving. Doubles as RealLife as it is a fictionalization of a court case that did really occur in medieval France.
* In ''Literature/TheMysteriousBenedictSociety'' series, the villain Ledroptha Curtain is the Evil Twin of the protagonist Nicholas Benedict. The two were SeparatedAtBirth. When the Society first meets Mr. Curtain, they don't realize this, and don't figure it out until they receive a message from Benedict warning them to "Beware the Gemini."
* In ''Literature/TheLightbringerTrilogy'', a major part of the backstory lies in the fact that instead of there only being one person with the power to become Prism in that generation, there had been two, brothers named Gavin and Dazen Guile. There was a civil war over which one would take the throne, in which the 'good' brother, Gavin, was victorious. Of course, what only a handful of people know is that [[spoiler: although Gavin's ''army'' won the war, the man on the throne is actually Daven, who imprisoned his brother (whom he closely resembled even before he made the effort to make himself his brother's double) and took his place. Also, even though the general population believes that Gavin was good and Daven evil, Daven has been a competent and fairly benevolent ruler, while some evidence suggests that Gavin might not have been as nice as the people believe]].
* In Creator/RobertEHoward's ''Franchise/ConanTheBarbarian'' story "Literature/AWitchShallBeBorn", Salome is this to Queen Taramis.
* Played straight in the short story "The poet and her double" in the book ''Women and Ghosts'' by Alison Lurie. Karo [=McKay=], a young and gifted poet, finds out that she is followed by her Evil Twin, the anti-Karo.
* WordOfGod has described Gellert Grindelwald of ''Literature/HarryPotter'' as Albus Dumbledore's (spiritual, not literal) evil twin.
* In ''Literature/TheGrimnoirChronicles'', Sullivan's brother Madi is the [[TheDragon right-hand man]] to the Chairman. The two of them look enough alike that it gets Sullivan [[spoiler:shot]].
* The trope is referenced in Creator/AlexanderPushkin's short story "Literature/TheQueenOfSpades". Apparently a hallmark of "those dreadful modern novels".
* In the ''Literature/ForgottenRealms'' "Return of the Archwizards" series, the Shadovar often force their enemies to confront their Shadows, a manifestation of everything they are not. At one point they threaten to do this to Malik, a lying and cheating backstabbing bastard. He is not impressed at all:
--> '''Malik:''' ''"Why should I fear such a thing? If a shadow is all the things I am not, this one is undoubtedly as charitable as I am selfish, as trustworthy as I am corrupt, as brave as I am craven. My shadow would only make me all the things that women desire and men admire."''
* All over the place in ''Literature/GalaxyOfFear: Clones'', along with the odd terrified non-evil one for flavor. Most are pretty much malevolent minions, but the very first one that Tash meets basically invokes this trope.
--> "I'm you," the other Tash said, stalking forward. "I'm the dark side you don't want to let out. We're the same right down to the last gene. But there isn't room in this life for both of us. And since I'm stronger-you'll just have to go."
* An interesting [[SubvertedTrope subversion]] occurs in the ''Literature/EighthDoctorAdventures'' with the Doctor's companion Samantha. The version the Doctor met and traveled with was actually paradoxically altered in the moment of their first meeting and accidentally turned into the "perfect" (blonde, peppy, vegetarian) companion. The original Sam is a (brunette) former addict, cynical and unimpressed with the Doctor. But she's not really evil, just a version of Sam who led a much harsher life and never met the Doctor.
--> "So what's she like?" [asked Sam]
-->"Who?" said the Doctor.
-->"My evil twin."
-->"Oh"..."She's very nice," he said cheerily. "She makes me think of me sometimes. Injustice breaks her heart. She talks a great deal. We both like omelets for breakfast."
-->''I get it,'' thought Sam. '''''I'm''' the evil twin.''
* ''Literature/SoulSeekers'': Dace's twin Cade is this.
* In ''Literature/EmilyTheStrangeStrangerAndStranger'', one of the Emily's is evil. The other can be considered good by comparison.
* Discussed in the humorous NATURE SF story [[http://www.nature.com/nature/journal/v518/n7537/full/518132a.html "How to configure your quantum disambiguator"]]. Of course, a [[BeardOfEvil goatee]] reference is present either. [[note]] In [[SchmuckBait NO]] case, push the [[ApocalypseHow red button!]] [[/note]]
* In the ''Literature/ZacharyNixonJohnson'' novel ''The Flaxen Femme Fatale'', the antagonist Natasha is an evil clone of Zach's secretary Carol. [[spoiler:Though she ultimately turns out to not actually be evil, merely unable to control her dangerous psi powers]].
* Hero Adrian's twin sister Adrienne in ''Literature/TheShadowspawn'' novels. She even introduces herself as his evil twin to Adrian's girlfriend.
* In ''Literature/WheresWaldo'', [[SdrawkcabName Odlaw]] acts as Waldo's evil twin, being a criminal, and having a black and yellow colour scheme. Just as Waldo makes a journey to the "Land of Waldos" which is filled with Waldos, it is later revealed that Odlaw comes from "Odlaw's Swamp" which is filled with Odlaws.
* Penny builds her own robot Evil Twin in ''Literature/PleaseDontTellMyParentsIHaveANemesis'' in a convoluted plan to launch her career as a superhero by fighting her villainous persona. When it predictably tries to overthrow her, she develops a Good Twin. [[spoiler:It tries to overthrow her for the good of humanity, but is foiled by Penny's power, which steals her body and identity]]. ''Literature/PleaseDontTellMyParentsYouBelieveHer'' continues the theme as [[spoiler:Penny, trapped in a robot body by her power, tries to reclaim her organic body, and identity. "Meatbag" Penny isn't inherently evil, but is extremely destructive]].
* In the George O. Smith story ''Identity'', matter duplicators are used to copy people, e.g. like creating an ExpendableClone to practise surgery on. Unfortunately this means that identical twins tend to hate each other, as [[CloningBlues each is mistaken for a duplicate]] and blames the other. So the protagonist Cal finds himself up against his identical twin brother Benjamin, who fulfils this trope (at least from his perspective).
* ''Literature/TheCatWhoSeries'': In book #8 (''The Cat Who Sniffed Glue''), the existence of an evil twin turns out to be a plot point in resolving the murder. [[spoiler: Everyone thinks that mild-mannered David is mourning the recent murders of his twin brother Harley and sister-in-law Jill, and that the tragedy is what caused the twins' mother to have a stroke. It's eventually revealed that Harley was having an affair with David's wife, and they cooked up a scheme in which Harley killed both David and Jill and took David's place. The mother's stroke happened when ''she figured it out''.]] It's especially jarring because prior to all of this, no one had any suspicions about either twin.
* This is a key component in the young adult novel ''Twins'' by Caroline B. Cooney. Mary Lee is envious of her identical twin sister Madrigal, who is considered prettier and is much more popular. When Madrigal is killed in an accident, Mary Lee decides to use the tragedy to fake her own death, so she can live her sister's life instead of her own. [[spoiler:Only when she 'becomes' Madrigal does Mary Lee find out that Madrigal was in fact a ''terrible'' person who did some truly evil things. The twins' parents actually sent Mary Lee away to boarding school because they began to suspect that Madrigal might try to kill her. They also knew all along which twin they had really buried, but went along with her ruse until she was ready to tell them the truth; as much as they hated to admit it, they were sort of relieved that their evil daughter was gone.]]
* In the Creator/LoisDuncan novel ''Stranger With My Face'', protagonist Laurie discovers that she was adopted as a baby and has an identical twin sister, Lia, whom her parents did not adopt. Lia has mastered the art of astral projection, and is able to visit Laurie. As the twins form a relationship, Lia encourages Laurie to learn the same skill, so that the fact that they are on opposite sides of the country won't interfere with them being close. [[spoiler:Lia, of course, is the evil twin. She tricks Laurie into learning astral projection so that she can [[GrandTheftMe take over Laurie's body]] and enjoy the happy family life that her sister has always known, after first getting to know her well enough that she can fool the people around her. However, Laurie's boyfriend and younger sister are able to see through the deception, and manage to help Laurie reclaim her body; Lia's body, meanwhile, has died and been cremated, so she is left without a host.]]
* ''Literature/TheBerenstainBears'': The lead villain of [[spoiler: the Big Chapter Book ''In Maniac Mansion'']] turns out to be one of these. [[spoiler:Squire Grizzly trusts his butler Greeves implicitly. The climax, however, reveals that Greeves has a twin brother named Arthur, who's been impersonating Greeves so he and his cohorts can make duplicates of the Squire's antique furniture, switch them out, and sell the originals for a lot of money.]]

[[folder:Live-Action TV]]
* ''Series/{{Alias}}'' gives us this trope via Project Helix. Two major characters (Francie and later Sydney) had evil versions, and several minor characters as well.
* Of course we can't forget ''Series/ArrestedDevelopment'' featuring the Evil Twin as a major plot point where George consistently traded places with his luxuriously hirsute good twin Oscar. Dot com.
** One such incident reveals that multiple people arrested by the police try to play the "You've got the wrong twin" card, with no success.
* Series/{{Arrowverse}}:
** Earth-2, introduced in the second season of ''[[Series/TheFlash2014 The Flash]]'', has several EvilCounterpart of Earth-1 characters, including Linda Park / Dr. Light, David Singh, Ronnie Raymond / Firestorm, Caitlin Snow / Killer Frost, Cisco Ramon / Reverb, Dante Ramon / Rupture, Laurel Lance / Black Siren, Tommy Merlyn (who in this universe is the Dark Archer), Dinah Drake, and Rene Ramirez. There are also inversions: criminals from Earth-1 have heroic or neutral-aligned versions in Earth-2. These include Harrison Wells (whose counterpart in Earth-1 is DeadAllAlong, his identity having been taken by Eobard Thawne), Floyd Lawton / Deadshot, Henry Hewitt / Tokamak, Malcolm Merlyn, and Adrian Chase (instead of Prometheus, he goes by the Earth-1 Oliver's old alias the Hood and later takes the mantle of Green Arrow).
** ''Series/CrisisOnEarthX'' crossover introduces Earth-X, a universe where the Nazis won World War II. The current Führer is Oliver Queen / Dark Arrow, his wife is Kara Danvers / Overgirl, his top lieutenant is Tommy Merlyn / Prometheus, and his other enforcers are Quentin Lance / Sturmbannführer and his daughter Laurel / Siren-X. As with Earth-2, there are exceptions: Leonard Snart is morally ambiguous in Earth-1, but his counterpart in Earth-X is a clearly heroic character.
** In Season 5 of ''Series/{{Arrow}}'', Felicity actually namedrops this trope while trying to figure out Black Siren's true identity.
* Kosh and Ulkesh ([[AllThereInTheScript Kosh II]]) in ''Series/BabylonFive'' sort of had this dynamic, although as far as we know they aren't siblings.
* In the 2002 revival of ''Series/TheBasilBrushShow'' there's Basil's cousin Mortimer who is a criminal mastermind.
* In ''Series/Batman1966'' TV series, one episode has the musical virtuoso Chandell, who is being blackmailed by his criminal twin brother Harry. (Both brothers were played by SpecialGuest Liberace.)
* Played with in ''Series/{{Battlestar Galactica|2003}}''. Boomer and Athena are a pair of Sharons/Eights who are set up as ForWantOfANail equivalents. Initially, Boomer seems to be more moral and Athena inclines towards the Dark Side, but both sway in both directions in the course of the series. By the end, Boomer has spent more time doing bad things (some of them very bad) while Athena is the nobler twin.
* The Evil Twin is a common trope for Brazilian soap operas to this day.
* From ''Series/BuffyTheVampireSlayer'':
** Vampire Willow and Vampire Xander in "The Wish". Vampire Willow returned in "Doppelgangland" and actually met her good counterpart, making her a better example.
** The trope was later subverted in ''The Replacement''. A demon's spell, meant for Buffy, hits Xander instead, splitting him in two. He spends the rest of the episode tracking his twin while the twin interacts with his friends and makes various changes to his life. At the end it's revealed [[spoiler: that the blast doesn't split you into Good/Bad, but rather into Strong/Weak. The Xander that the audience thought was the "Good" Xander was actually the "Weak" one and the "Strong" one wasn't doing anything harmful to his life and was actually improving it. The demon's plot hinged on the fact that if one of the twins was killed, both would die. He'd planned to split Buffy into a Slayer powered version and a valley girl version, then kill the latter.]] In this case, the special effects crew had an easy time getting both Xanders in the same shot. Xander's twin was played by Nicholas Brendon's [[MakingUseOfTheTwin identical twin brother]], Kelly Donovan (who may or may not be evil).
** Two AlternateUniverse versions of Giles: Ripper from the game ''Chaos Bleeds'', and a vampire EvilOverlord from ''The Lost Slayer'' book series.
* [[AvertedTrope Averted]] in ''Series/{{Castle}}''. The murder victim (Zalman) had a twin brother (Edmund), who [[IdenticalTwinIDTag wore eyeglasses]] and turned up mysteriously while Castle and Beckett were searching the victim's secret magic workshop. Castle immediately [[LampShadeHanging lampshades]] this trope and speculates that ''Edmund'' was the victim and Zalman murdered him to assume his happy family life and prosperous, stable job as an accountant, while inheriting his own magic shop plus insurance money. Played straight; Lanie double checks the fingerprints and immediately rules Castle's theory out. While the twins were very different, ''both'' were good guys who lacked stage presence.
* ''Series/{{Charmed|1998}}'' had to deal with a few evil twins.
** Paige had an evil past incarnation travel to the present who looks just like her.
** And later, in the sixth season, there was a revelation of a mirror universe where everyone who is good is evil and everyone who is evil is good. The whitelighters are darklighters and the Police Station looks more like a strip club.
* ''Series/{{Community}}'' Season 3, Episode 4, [[Recap/CommunityS3E04RemedialChaosTheory "Remedial Chaos Theory"]], features seven alternate timelines. The Abed in Timeline 1 recognises it as the darkest timeline (Pierce is dead, Annie's crazy, Jeff lost an arm, Shirley's a drunk, Troy lost his larynx and Britta [[ArsonMurderAndJaywalking dyed a strip of her hair blue]]) and suggests the group embrace their role as evil versions of the Main Timeline group.
-->'''Troy and Abed:''' ''[[DarkReprise Evil Troy and evil Aaa-bed!]]''
* ''Series/CriminalMinds'':
** In the fourth season episode "The Angelmaker", an executed serial killer appears to be back, complete with possible DNA evidence. Reid floats the idea of 'evil twin, '''eviler''' twin', but no one else buys it. And they're right, too.
** The episode "The Inspiration" ends with the revelation that the man they arrested wasn't behaving properly because he was the actual unsub's long-lost brother. Part two, "The Inspired," reveals [[spoiler: it's more a case of crazy twin, evil twin. While neither brother is an especially good guy, one's crimes are motivated by his mental illness while the other is simply a sociopath]].
* On ''Series/{{CSI}}'' the Gig Harbor Killer, a serial killer from Seattle who kidnapped DB's granddaughter, is revealed to have a highly successful long-lost twin (they were adopted into different families). Successful-twin sincerely believes his brother is innocent and claims he didn't know of him until he was caught but having met them both DB's pretty sure [[EvilAllAlong they were already partners back in Seattle]].
* In an unusual example, ''Series/DarkAngel'' introduces the evil twin first. Ben is a disturbed serial killer; his twin brother Alec, introduced a season after Ben's death, becomes one of the main heroes of the series... even if he does [[JerkWithAHeartOfGold have his rough patches]].
* In ''Series/DarkOracle'' the major antagonists, Blaze and Violet fall somewhere between this and EvilCounterpart. [[NoNameGiven Evil Sage]] (Season 2, Episode 3, "Through A Glass Darkly") on the other hand, plays this absolutely straight, being the DarkWorld twin of Lance's girlfriend, Sage, and her complete opposite in terms of personality. Whereas real-world Sage is a geekily-cute girl, with low self-esteem and very odd taste in--well pretty much everything--her comic book counterpart is a vindictive bitch with creepy heterochromia, [[TattooedCrook evil tattoos]], and a plethora of KickTheDog moments. She's hyper-aggressive to Sage's shyness, enjoys playing mind games with Lance, and looses a poisonous snake on a pair of girls who defaced her locker. It takes a near-death experience to bring the real Sage back.
* In the Fox TV movie ''Dark Reflection'' (aka, ''Natural Selection''), C. Thomas Howell plays a dual role. In one role, he is a successful computer programmer named Ben with a great house and an awesome sports car but is neglectful of his wife and son. In the other role, he is Adam, a clone of Ben who has been running around the country killing his other clones and taking over their lives. (There were seven clones altogether.) Well, Ben is last on the list. So, Adam gets a job at Ben's company, charms the wife and kid, and infiltrates Ben's life to learn all the little details he will need to accomplish his evil plan. Along the way, [[spoiler: Adam kills a private detective, who has figured it all out, and Ben's mother, who is the only one who know that Ben has a clone. He also has sex with Ben's wife, who can't tell the difference.]] In the climax, Ben and Adam fight on the roof and one kills the other. At the end, we find out that [[spoiler: Adam survived, and that he's actually a better father to Ben's son and a better husband to his wife. Neither of them know they're now living with a murderous clone who has killed the real Ben and several others.]]
* A well-known American soap opera example is Andre [=DiMera=] from ''Series/DaysOfOurLives.'' Andre was given plastic surgery to make him look like his cousin Tony at the contrivance of the man Tony grew up believing was his father, crime lord/practical supervillain Stefano [=DiMera=]. At Stefano's behest and while Tony was kept secretly imprisoned, Andre while impersonating Tony became a serial killer just to frame an enemy of Stefano's, although Stefano ended up betraying him once Andre's killing spree included Stefano's own daughter (although that didn't stop Stefano many years later getting Andre to pretend to be Tony ''again''!).
* ''Series/DoctorWho'':
** In the classic series adventure "Inferno," the Third Doctor is sent into an AlternateUniverse where he encounters evil-fascist-twin versions of his friends in UNIT -- the evil Brigadier has in fact ''lost'' his facial hair, but gained an eyepatch in response. Bizarro Liz is a brunette instead of a redhead. Curiously enough, there's no evil version of the Doctor himself (although the ExpandedUniverse novels did suggest that the evil tyrant ruling this fascist alternative Britain was in fact an alternative version of the Third Doctor with a different body who went evil after his forced regeneration by the Time Lords).
** In "The Chase" the Daleks create an android First Doctor as part of their plan to kill the TARDIS crew. Slightly spoiled by the fact the actor doesn't look entirely like William Hartnell. Happens later in "The Android Invasion" an android duplicate is created of the Doctor and many other characters.
** Evil dictator, Salamander, from The Enemy of the World is an evil twin for The Second Doctor. However, since The Doctor has A LOT of specialized knowledge, including the operation of the TARDIS, he was easy to uncover when he tried to impersonate him.
* ''Series/TheDukesOfHazzard'': Two instances, both involving the series' two main villains (one each per episode):
** The episode "Baa Baa White Sheep" introduces Boss Hogg's good twin, Abraham Lincoln Hogg (Sorrell Booke in a dual role), who is everything his brother isn't; A.L. Hogg is kind, charitable, and decent. He wears a priest's black outfit and a black stovepipe hat, and drives a black car, in contrast to his brother's white duds and white vehicle. The twins' parents must have foreseen how their sons would have turned out; astute viewers will recognize that the twins are named after Abraham Lincoln and Jefferson Davis, the Presidents of the Union and the Confederacy, respectively, during the American Civil War.
** In "Too Many Roscoes," the real Roscoe is kidnapped by a band of bank robbers while the ringleader -- an impersonator named Woody (James Best in a dual role) -- takes to the streets assuming Roscoe's identity... all to help his two criminal associates gain control of an armored truck delivering a $1 million shipment to Hazzard Bank. (Incidentally, the main characters fail to call Woody on his fake identity when "Roscoe" bungles simple facts about his friends but remembers facts about the expected bank shipment in exact detail.)
* The TV movie ''Echo'' had Jack Wagner play an evil twin brother who kidnapped the main character and move into his life, killing his remaining relatives in the process, until at the end when the character's girlfriend confronts them both in the abandoned building, she doesn't know which one is the evil twin and ends up shooting one of them, with the audience also left wondering [[AmbiguousCloneEnding which one was killed]].
* Subverted in one episode of ''Series/{{Elementary}}''. The twins in question are [[spoiler: fraternal twins, not identical, so there wasn't any impersonation of the good twin.]] Some aspects of this trope are played with, namely [[spoiler: framing/trying to kill off the good twin.]]
* Parodied in one episode of ''Even Stevens'', where Louis meets a lookalike with a similar name from a different school, who starts playing pranks on everyone and gets him blamed for it. Louis isn't really upset about that, but rather about the fact that the pranks being pulled are so amateurish and sloppy as to [[VillainCred ruin his reputation as a prankster]].
* ''Series/FantasyIsland'' once revealed that Mr. Roarke and Tattoo had their own evil (non-identical) twins, who wore black suits with white ties, and had British Accents. Perhaps ironically, the 1998 reboot of ''Fantasy Island'' starred British actor Malcolm [=McDowell=], complete with a black suit, as Mr. Roarke. In a separate episode of the original series called "Look Alikes", a guest (Ken Berry) wishes to meet and exchange places with his (non related) twin (Ken Berry) who he has never met, and who of course turns out to be wanted by some bad guys.
* Subverted in ''Series/{{Farscape}}'''s third season, where a second John Crichton is created... yet is absolutely the same as the first Crichton. However, it was essentially played straight in the episode "My Three Crichtons," which featured John being duplicated into [[spoiler: a caveman and a future-brain-man-thing]]. Strangely enough, only ''one'' was actually evil.
* In ''Series/FatherDowlingMysteries'', the eponymous priest had an evil twin who was a criminal and would pop in and cause trouble.
* ''Series/{{Friends}}'':
** Phoebe's twin sister, Ursula, is by all accounts a bad person: she's an awful waitress, nearly cons a man into marrying her, sold Phoebe's birth certificate to a stranger, becomes a porn star using Phoebe's name, and generally has no affection for Phoebe. She also didn't tell Phoebe that their mother had left a [[GoodbyeCruelWorld suicide note]], and tried to improvise one on the spot when Phoebe asked to see it.
** Parodied in another episode, when Joey was dating someone who honestly believed he was the character he played on TV, Dr. Drake Ramore. When she sees him in person while the show plays on the TV in the background, she becomes confused. Joey tells her the truth but she doesn't understand, so Ross tells her that he is actually Hans Ramore, Drake's evil twin.
* On ''Series/{{Fringe}}'', all of the characters have specific counterparts in the AlternateUniverse. Whether or not they're evil is up to debate.
** Interestingly, there is one prominent alternate universe character who did not have a counterpart in "our" universe for the longest time. Finally, a "good" version (who looks a little nerdy in glasses) shows up... for a single episode. He returns as a regular in the following season.
** In a more straight version of this trope, there's a season 4 episode where the Fringe Divisions from both universes are working together to catch a serial killer in the alt-universe, with the help of his counterpart from the prime-universe, who thanks to a woman he met in his childhood, becomes able to contain his psychotic urges and avoid the crime path, such luck his alternate did not have.
* ''Series/GeneralHospital'' once had an interesting take on this. There was once a character named Grant Putnam who was revealed to TheMole for the Soviet Union. ThePowerOfLove redeems him and after helping to dispense with his comrades, continues his life. Eventually the NotQuiteDead real Grant Putnam recovers from amnesia. At first it seems he's evil due to the trauma of nearly dying and spending years in an asylum, but it's revealed that he was EvilAllAlong and had originally murdered his brother in order to have his brother's fiancée, who's now married to the Russian.
* In Chinese TV series 神医大道 (English title: "God Of Medicine") a maid-servant is magically transformed into the princess' evil twin. Then the princess is transformed into a duplicate of the maid, becoming her ''good'' twin. It's almost a GrandTheftMe, except that the changes happen separately.
* Alton Brown's evil twin, B.A., is a recurring character on ''Series/GoodEats'', usually to provide contrast as Alton and B.A. make sweet and spicy varieties of the same dish. Despite the fact that B.A. is "evil", and has been in and out of jail numerous times, Alton and B.A. seem to get along relatively well. Of course, this might be because B.A.'s also TheVoiceless, and Alton provides the running commentary on anything B.A. makes.
* ''Series/{{Gunsmoke}}'': In one episode, Festus is jailed on charges of murder and robbery... only someone who [[IdenticalStranger looked just like him]] was the actual criminal.
* ''Series/HannahMontana'' has this with Miley's cousin Luann, who looks like her, does bad things to her, and even tricks other people at a Halloween party that she's the real Hannah just to ruin Miley's alter ego's reputation. Luckily, she only showed up in one episode.
** There's also Luann's dad, who is Robbie Ray's identical twin brother. He isn't actually evil himself, but seeing two Robbies side by side does freak out the snooty neighbor.
* ''Series/{{Heroes}}'' has begun this trope as an "evil" character [[spoiler: Sylar]] gained shapeshifting abilities and has begun taking on the roles of a "good" character [[spoiler: Nathan Petrelli]]. (Though their good and evil roles seem to change episode by episode.)
* ''Series/{{Himmelsdalen}}'': Siri turns out to be a very dangerous, manipulative sociopath who murdered a mother and daughter, then switches places with Helena, her normal twin, so she can escape a mental institution. Even as a child, Siri stole her toys out of spite, hiding them from Helena, and killed her dog (to Helena's only much later realization).
* Each of the main characters in ''Series/HowIMetYourMother'' has a [[IdenticalStranger doppelganger]]. Lily's duplicate Jasmine is a clear Evil Twin who robs Barney, Ted, and Robin. However, Barney's doppelganger, Dr John Stangel, is a mature and well-respected fertility doctor who is visibly unamused by his duplicate's antics, making ''Barney'' the Evil Twin.
* ''Series/ICarly'' in the episode ''iTwins''. Essentially, the main character Sam is the ''evil'' twin, and Melanie is the ''good'' twin.
** This is continued in the ''Series/SamAndCat'' episode "#Twinfection", but somewhat inverted. As a trick, Sam convinces Cat that she had the title infection and had an evil twin. Sam tells Melanie to be ten times as bad as Sam usually is.
* In ''Series/IDreamOfJeannie''. Jeannie's sister (also named Jeannie, also played by Barbara Eden, but with a brunette wig) was not truly her twin, but could easily pass for her sister and was clearly evil, trying many times to steal Tony for herself. Jeannie's sister wore a green version of Jeannie's pink harem girl outfit, but with a skirt rather than pantaloons.
* A two-part episode of ''Series/TheIncredibleHulk1977'' introduced viewers to another Hulk, created by a similar process to the one that transformed David Banner -- but even more wild than the one we know, and actively malevolent and murderous.
* ''Series/JaneTheVirgin'':
** Frequently discussed by the characters and the narrator as a well-worn telenovela trope. Rogelio considers it an old cliché.
** Petra is revealed to have a twin sister, Anezka. While she posits as the nicer, more eccentric, mousier sister to the cold and unfriendly Petra, she's later revealed to be scheming to get Petra out of the picture and take over her life.
* ''Series/KamenRiderFourze'' has a literal version with the [[MeaningfulName Gemini]] [[MonsterOfTheWeek Zodiarts]]. When the TransformationTrinket is used, it produces an Evil Twin of the user, which does its best to strengthen its own existence while weakening the original's. As this happens, the stronger one resembles a normal human while the weaker becomes more "fake" (such as their face becoming a solid white mask). After a set amount of time, the stronger side becomes permanent and the weaker side fades out of existence completely. [[spoiler:Unfortunately for our heroes, this is happening to Kamen Rider Club member Yuuki.]]
* ''Series/KamenRiderGhost'' also has one in the form of a doppelganger of Makoto Fukami/Kamen Rider Specter. The doppelganger wears the Ganma's military uniform and sports AxCrazy [[SlasherSmile psychotic grins]] to distinguish himself from the real one. Each time the doppelganger is [[CurbStompBattle curbstomped]] by the real Makoto, the latter [[{{Synchronization}} experiences]] pain in the aftermath of a fight. [[spoiler:By the time the series reaches its climax, this trope is taken UpToEleven when Doppelganger!Makoto gains his own Deep Specter Eyecon and starts wearing the real Makoto's [[HellbentForLeather leather outfit]] to further [[SpotTheImpostor fool]] his friends, and eventually [[BecomingTheMask sides]] with his real self in earnest.]]
* ''Series/KnightRider'', a show with only three regular human characters, featured four evil twins; KITT, whose prototype KARR appeared in "Trust Doesn't Rust" and "KITT vs KARR", Michael, whose surgically reconstructed face was revealed to be based on the long-lost Garthe in "Goliath" and "Goliath Returns", Bonnie has an imposter wearing a LatexPerfection disguise in "[=Killer KITT=]", and Devon, who had a surgically reconstructed duplicate in "Knight of the Juggernaut". A script commissioned but never produced was to introduce yet another "evil twin", Devon's unscrupulous, though not actually evil, twin brother.
* The ''Series/LawAndOrder'' episode "Brother's Keeper." The good twin is a mild-mannered citizen, while the bad one is a member of the Irish mob. [[spoiler: In a twist, it's revealed that the "good" twin committed murder, and the "evil" twin killed a witness to that murder, then took the rap himself, knowing that he'd get killed in prison. Which he did.]]
* The ''[[Series/LawAndOrderSpecialVictimsUnit SVU]]'' episode "Double Strands", where the rapist and his wrongfully-accused twin brother were played by T.R. Knight. ADA Novak understandably flips out when she's told this, citing this as the definition of reasonable doubt. The evil twin follows his blissfully ignorant and successful brother (their mother gave them up for adoption separately) around the country and rapes women, when he knows his brother doesn't have an alibi. He slips up when his brother alters his schedule one day, and then leaves a fingerprint on a screwdriver (identical twins have the same DNA but different fingerprints).
* ''Series/{{Lexx}}'', presumably due to casting limitations, featured an endless supply of twins, some good, some evil. In a bit of LampshadeHanging, the characters theorized that there were only a finite number of archetypes for human appearances.
* In ''Series/{{Lidsville}}'' the villain Hoodoo had a good twin, Bruce, the WhiteSheep of the family.
* ''Series/LoisAndClark'' had Lois' evil twin, who was a clone. And Superman's misguided-and-sees-Lex-as-his-father twin, who was also a clone.
* ''Series/MalcolmInTheMiddle'' had a hilarious inversion. Dewey is finding people who are just giving him money for no reason. At first he doesn't question it, but Reese finds out that there's another kid who looks just like Dewey. He then surmises that for every person there is an evil opposite. When Dewey is worried that he's met his evil twin, Reese points out the kid is virtually a saint and that Dewey is the Evil Twin. Reese then recruits Dewey to do a lot of bad things and get the other kid blamed, but by the end of the episode, Dewey tells the other kid's older brother on what's going on and gets Reese beaten up.
* In the ''Series/MastersOfHorror'' episode "Imprint", the disfigured prostitute reveals at the end that she has a twin "sister", a mutated abomination attached to her head as a result of her parents' inbreeding (they were brother and sister). The mutant forced her sister to do evil things like steal a valuable ring and set up another prostitute to be tortured for it.
%%* ''Series/TheMiddleman'' episode "The Palindrome Reversal Palindrome"
* The second season ''Series/MightyMorphinPowerRangers'' episode "The Return Of The Green Ranger" gives us a clone of Tommy, repowered with the Green Ranger powers and evil. He easily hands the real Tommy his rear and the resummoned Dragonzord easily trounces the Thunder Megazord. Thankfully, defeating the wizard that created him frees him from being evil, and he and Tommy go back to the past and allow the clone to live there in peace.
** In the finale of Season Two, "Blue Ranger Gone Bad," Billy gets his own evil twin.
* The renewed series of ''Series/MissionImpossible'' had its own unique take on this, thanks to LatexPerfection. An IMF agent who'd gone insane after a head injury was carrying out murders while disguised as Jim Phelps. Naturally he had all the training and skills that Phelps had, making him an Evil Twin in all but name. Well, that explains the first movie.
* In the ''Series/{{Monk}}'' episode "Mr. Monk and the Bully", the {{villain of the week}} turns out to be a woman's {{long lost| relative}} evil twin sister, who attempts to [[KillAndReplace murder and impersonate her]].
* ''Series/{{Neighbours}}'':
** Robert Robertson for his triplet Cameron, whom he [[TwinSwitch impersonated]] in a plan to kill his father, sister, and anyone else who got in his way.
** Andrea Somers was originally introduced as an IdenticalStranger for Dione Bliss, whom she impersonated in hopes of getting her parents' inheritance. They were retconned to be twins SeparatedAtBirth two years later.
* Stick Stickly, the stick puppet host of Nickelodeon's ''Nick in the Afternoon'', had a diabolical lookalike, Evil Stick, who once tried to take over the summer programming block.
* Gwen, Fiona Brake’s identical sister in ''Series/NightAndDay'', isn't ''outright'' evil; but she's certainly an antagonist, who swiftly makes a beeline for Fiona’s husband Mike.
* ''Series/OneLifeToLive'' had an aversion with Mortimer Bern, the good twin to crime lord Carlo Hesser. However, he didn't stay good once Carlo's lover Alex propped him up to take over Carlo's criminal empire (although he did get better)...
* On ''Series/OrphanBlack'':
** The ninth clone introduced (counting three killed before the series starts), Helena, was raised by a group of religious extremists to kill off the other clones. [[spoiler:At first, the other characters just assume, as the audience is meant to, that she's just another clone; but she's ultimately revealed to literally be Sarah's twin sister. It's ultimately subverted, however. Helena may be murderous, but she's not ''evil'' -- she's just an abused young woman who's been taught some ''very'' bad morals. Over time, she goes through a HeelFaceTurn.]]
** Rachel — clone number ten — may be a very dark grey as opposed to pure black, but also fits into this trope.
* ''Series/OutOfThisWorld1987'': Evie splits herself in order to attend a party while also writing a speech about the evils of school uniforms (specifically, bright yellow dresses with blue baseball caps, and breeches for the boys). Unsurprisingly, the process results in a serious Evie and a reckless Evie. The serious Evie is portrayed as the "real" one, at least until Serious-Evie tries to give her speech and discovers that she's now ''in favor'' of the dress code. Troy attributes their eventual recombination to ThePowerOfLove, which is kind of {{Squick}}worthy if you think too hard about it.
* ''Series/PlanetAjay'''s BigBad, Badjay, is the troublemaking twin brother of the show's main character, Ajay.
* ''Series/{{Popular}}'' had Bobbi and Jessie Glass working at Kennedy High (as well as their brother Rock). Bobbi and Rock were notoriously mean and unpleasant, while Jessie the nurse seemed a bit nicer, comparatively speaking. And yet, in the first season finale, Jessie plotted to kill her twin and frame all of Bobbi's sophomore biology class for the murder. Who's the mean one now?
* ''Series/PrettyLittleLiars'' outright abused this along with IdenticalStranger, with the reveals of Uber -- A [[spoiler: Mary Drake]], Spencer's mother [[spoiler: and killer of her own twin sister, Jessica Drake]] and AD [[spoiler: Spencer's twin sister, '''A'''lex '''D'''rake]].
* Discussed on ''Series/{{QI}}'': Creator/StephenFry asks how to determine which of identical twins committed a crime if you have eyewitness accounts, fingerprints, and DNA evidence[[note]]The answer is the fingerprints, which though very similar are ''not'' identical[[/note]]. Creator/JimmyCarr responds "they're twins -- it's the evil one!"
* The 1970s science fiction parody series ''Series/{{Quark}}'' also hit this trope in an episode called "The Good, The Bad, and the Ficus". [[TheSpock Spock-like]] Ficus, being a plant, had no morality to invert when the crew of the ship was duplicated.
* An episode of the usually extremely down-to-earth ''Series/{{Route 66}}'', "I'm Here to Kill a King", features an assassin who looks exactly like lead character Tod and is played by Martin Milner.
* ''SabrinaTheTeenageWitch'':
** ''Every'' member of the Spellman family is one of a set of twins, and one of each set is ''always'' evil. In Sabrina's case, her twin is Katrina. Naturally, Sabrina is the good one, and the family has a SecretTestOfCharacter for discovering which is which: after making a seemingly final judgement based on their past good and evil deeds, both sisters are brought to a volcano, where the emcee tells the good one to cast the evil one into it, knowing only the evil one would actually do it; Katrina fails miserably by doing this without hesitation. The Other Realm even has a prison specifically for witches like this (in the "Twin Cities"), although Katrina escapes from it in one episode and in another, is able to strike at Sabrina while still there.
** Aunt Zelda's evil twin is worse. [[NamesToRunAwayFromReallyFast Jezebelda]] claims to have created the Bubonic Plague; but while clearly wicked, she isn't as smart as Katrina.
* ''Series/SaturdayNightLive'':
** "Frankenstein, Tonto, and Tarzan" sketch, Frankenstein is kidnapped and replaced by his evil brother. The big joke of that was Frankenstein was played by Phil Hartman and was inarticulate while his evil twin was played by Mel Gibson could speak proper English and Tonto and Tarzan still couldn't tell them apart.
** This trope is parodied in another ''Saturday Night Live'' skit one which is titled "Jay's Evil Twin," in it... Leno uses a fake moustache to determine if his date (Joan Cusack) will put out -- his evil twin Wade.
--->'''Jay's Evil Twin''': What's the matter, baby? Still got your clothes on? ''[releases an evil laugh as he shakes the beer can]''\\
'''Kate''': Oh, uh.. I don't want that beer.. I.. no, thank you, Jay.\\
'''Jay's Evil Twin''': ''[releases an evil laugh]'' Wet t-shirt contest, baby? ''[pulls the tab on the beer can, gushing beer all over Kate's clothes]''\\
'''Kate''': Why! You're not Jay! You're Wade, his evil twin!\\
'''Jay's Evil Twin''': ''[releases an evil laugh]'' Jay -- that little weasel! That sniveling druid! What kind of a man would read ''Our Bodies Ourselves''? I've got my own version of that book, baby -- it's called ''Your Body Myself!'' ''[releases an evil laugh]''\\
'''Kate''': Ohhh, that's evil! You're an evil, evil man! ''[runs quickly out of the apartment]''\\
'''Jay Leno''': ''[releases an evil laugh, as he peels the fake moustache off his upper lip]'' You know.. I had a hunch that dame wasn't going to come across on the first date. You know, this evil twin thing works every time -- I could have blown three hours and who knows how much dough on that girl. But, anyway.. ''[checks his watch]'' My God, it's still early... I can still go to Hef's place, maybe meet somebody else there. See you later. ''[releases evil laugh as he exits the apartment]''
** The soap opera parody "The Young and The Youthful" plays with this trope by having Creator/AlecBaldwin portray both the handsome and wealthy Pierce Talbott and his mentally challenged evil twin Petey, who takes his place. Much of the humor comes from the other characters' apparent inability to immediately recognize that Petey has taken Pierce's place.
--->'''Delaney''': Pierce Talbott has been acting strange lately. He cancelled all his meetings, then he locked himself in his office and watched cartoons all day long.\\
'''Shane''': That doesn't sound like Pierce Talbott...\\
'''Delaney:''' Watched and sang along...\\
'''Shane''': That doesn't sound like Pierce Talbott at all...
* ''Series/TheSecretWorldOfAlexMack'' has Alex accidentally come into contact with a compound called "GC Divide" which splits her puddle form into two people with distinct personalities, one being the regular Alex, and the other being her repressed bad-girl side that tries to eliminate her good half on two separate occasions, as well as just being unpleasant to everyone around her.
* A recurring version in ''Series/SevenDays'', although not a twin (not even related). Galina is a patient in a Minsk mental institution and is prone to violent outbursts. Russian government officials (presumably, with permission from the Belarus authorities) take her to a secret location and turn her into a look-alike for Olga, the resident HotScientist on the show. The goal is to infiltrate the [[TimeTravel Backstep]] project and steal the secret of the [[OurTimeMachineIsDifferent Sphere]] for the Russian version of the project. After Galina is [[SheCleansUpNicely cleaned up a bit]], she becomes a dead ringer for Olga, although their personalities are ''very'' different, and people notice "Olga" acting strangely. Namely Parker, who spends many episodes unsuccessfully trying to get Olga into bed suddenly finds her trying to jump him.
** A more conventional version was also done in this series. In a season 1 two-parter, Parker is accidentally duplicated by the Sphere during a Backstep hurriedly undertaken during an [[UsefulNotes/BetaTest incomplete tech upgrade]]. At first it seems as though they're going to clash with each other because they're both the same alpha-male personality (as with the duplication of Crichton on ''Series/{{Farscape}}''), [[spoiler: but it quickly develops that the duplicate Parker is an ultranationalist sociopathic asshat for some reason]].
* The Channel Four comedy-drama ''Series/ShamelessUK'' had the Good Twin variety: homophobic villain Paddy Maguire turns out to have a homosexual and non-villainous twin brother.
* ''Series/{{Sherlock}}'' uses this as a DiscussedTrope in "The Abominable Bride," where it's PlayedForLaughs. Said bride has apparently come back to life to murder someone ''after'' witnesses saw her blowing her own brains out. Watson suggests that she might have a twin sister who committed the murder. This is dismissed by Sherlock with irritation; her only relative was a brother who died years before. Watson then suggests that she might have a ''secret'' twin!
-->'''Watson:''' Hmm, you know? A twin that nobody knows about? This whole thing could have been planned.
-->'''Holmes:''' Since the moment of conception? [[SarcasmMode How breathtakingly prescient of her!]] ''It is never twins'', Watson.
* Lord John Roxton gets one in one episode of ''Series/SirArthurConanDoylesTheLostWorld'' after he is cursed for disturbing a graveyard's peace. The protector takes the ruthless and violent part -- basically the hunter part -- out of him and gives it a life of its own. Evil!Roxton tries to kill the good one, using Marguerite as bait. It ends in a MirrorMatch.
* ''Series/{{Sliders}}'':
** The series featured numerous evil twins, including one case where there is a NoEnding in which one of the regulars may have been permanently replaced by his twin.
** For a while, there was an online game about the series involving the PlayerCharacter as a new slider who has to figure out which of the four other members (Quinn, Colin, Maggie, and Rembrandt) has been replaced by an Evil Twin before they have to slide. Basically, it's a trivia game where you ask each character questions about past adventures (i.e. episodes) and try to spot inconsistencies. The game is not randomized, so [[spoiler:the impostor is always Colin]]. The inconsistency involves [[spoiler:the episode where Colin and Maggie were drugged to live a happy life together. The impostor claims that he hated every minute of it. In fact, the real Colin, being pumped full of drugs, loved it]].
* ''Series/{{Smallville}}'' had a couple of Evil Twin variants.
** Bizarro Clark, of course, whose distinguishing characteristic was that he'd wear the opposite jacket/shirt combo (red jacket/blue shirt if Clark's got a blue jacket/red shirt, etc.) and [[IdiotPlot no one noticed.]] Also, in the episode "Onyx", ComicBook/LexLuthor is split into a Good Lex and a Crazy/Evil Lex.
** There's also Clark Luthor/Ultraman, an AlternateUniverse version of Clark who was raised by Lionel Luthor. To say he's an utter [[TheSociopath psychopath]] would be an understatement. Lois, Tess, and Oliver all immediately realize that this isn't their Clark and proceed to deal with him accordingly.
*** Technically the Earth-2 Lionel is this to E-1 Lionel. E-1 Lionel died while on the [[HeelFaceRevolvingDoor Face]] side, and while he's not exactly [[MagnificentBastard a nice guy]], he's still ''far'' from TheSocialDarwinist AxCrazy E-2 Lionel.
* In one subplot of ''Series/{{Soap}}'', Burt is kidnapped by space aliens, one of who is transformed into an exact duplicate of him, who's not so much evil as horny for Burt's wife. Burt gets the aliens to return him to Earth, leading to [[https://www.youtube.com/watch?v=8laJD6yZS8w this touching yet funny scene of Richard Mulligan acting with himself]].
* ''Series/SoWeird'': "Pen Pal": Random supernatural occurrences cause Annie to come face-to-face with a parallel universe counterpart who has fallen in with a bad crowd, and thereby turned "evil." (Well, goth and rebellious. This being a Disney show, that's about as evil as a character could get.)
* The final ''Series/SpaceCases'' episode to air, "Trouble With Doubles":
-->'''Commander Goddard''': We have an Evil Twin situation.
* ''Series/StarCops'': In "A Double Life", Albi is an evil clone of the famous pianist James Bannerman.
* ''Series/StargateSG1'':
** Samantha Carter had an evil replicator version of herself, Replicator Carter (Replicarter) who nearly takes over the entire galaxy.
** In the Alternate Universe of "Point Of View", Apophis has a goatee, a la Spock, but everyone is morally the same, except maybe Teal'c (our Teal'c didn't give him a chance to talk before offing him).
** And then there's the Alternate Universe SG-1 that tries to steal the Daedalus in "Ripple Effect".
** Subverted slightly by Col. Mitchell who points out to the alternate Mitchell that "You don't have a [[BeardOfEvil goatee]], so you aren't from the [[MirrorUniverse evil twin universe]]"
* Series/StarskyAndHutch each have one in "Starsky And Hutch Are Guilty". [[spoiler:These evil twins are actually two look-alikes disguised as the title characters, pinning crimes on the original duo under orders of a corrupt attorney.]]
* Data has an evil twin, Lore (a psychotic and sadistic version of Data), in ''Series/StarTrekTheNextGeneration'', and a "stupid twin", B4, in ''Star Trek: Nemesis''.
** William Riker has one, thanks to a [[PhlebotinumBreakdown transporter malfunction]], who at first is just missing some social niceties after being stranded on a planet alone for the better part of a decade.
** And then "Thomas" Riker shows up in ''[[Series/StarTrekDeepSpaceNine Deep Space Nine]]'', impersonates his brother, and steals the ''Defiant'' for a mission with the Maquis, making him at least seriously misguided. (He's right about the hidden Cardassian fleet, however.)
** In ''Series/StarTrekVoyager'', the Emergency Medical Hologram on the EvilCounterpart ship U.S.S. ''Equinox'' has had his "ethical subroutines" removed, making him an Evil Twin of the Doctor on ''Voyager''.
** Lots of evil twins in the MirrorUniverse, of course, but [[Series/StarTrekDeepSpaceNine Intendent Kira Nerys]] deserves special mention for being the only one who's actually met her counterpart. And got [[ScrewYourself the hots for her]].
** Spock's "evil twin" is terrifyingly cold and ruthless; however, apart from the beard, he actually is identical to his regular universe counterpart, and is simply behaving logically for someone living in an evil empire. When he realizes what's happening, he helps Kirk return to his original universe so he can get his (evil) captain back. Kirk is even able to persuade him to rebel from the empire on moral grounds.
** In the original show, Spock detects mirror-Kirk almost immediately and confines him, whereas Kirk is able to blend in without arousing suspicion. Spock later speculates that a civilized man can masquerade as a barbarian by simply reverting, but that a barbarian has no core of civilization to draw on.
** As well as having a double in the Mirror Universe, Kirk also had an android duplicate (''What Are Little Girls Made Of?'') and an evil double created by a transporter accident (''The Enemy Within''). The transporter double was an interesting case, as it actually split Kirk into a "Good" ''and'' "Evil" version of himself. The good Kirk lacked the strength of purpose to command, while the evil Kirk, while violent, ultimately lacked the moral courage to face the situation. While hating each other, both finally realize they need each other to survive.
** In the expanded universe novels by Creator/WilliamShatner, Kirk (who was revived after his on-screen death in ''Film/StarTrekGenerations'') finally gets to meet his MirrorUniverse version, who likes to call himself Tiberius and who was, for a time, TheEmperor (until Spock led a coup) before being instrumental in getting the Klingons and the Cardassians to ally. By the end of the trilogy, he has mellowed out, though, and becomes more like Kirk.
* ''Series/{{Supernatural}}'' has had three shapeshifter episodes:
** "Skin", "Nightshifter", and "Monster Movie". The latter two don't really use this trope, but "Skin" prominently features a shapeshifter who becomes an Evil Twin of Dean.
** Then there's the ''actual'' evil twin in "Simon Said." Sam and Dean are investigating a case where someone is using mind control to make people commit suicide. They find a guy named Andy who has mind control powers, but it turns out that the one who's actually making people off themselves is his long-lost twin brother, who has the same powers. Andy's response when he finds out? [[LampshadeHanging "I have an evil twin."]]
* ''Series/ThirdRockFromTheSun'' had Dick temporarily replaced as high commander by another alien who takes on the same human form and identity. This replacement (called simply "New Dick") is not only an evil [[TakeOverTheWorld megalomaniac]], he is also "extremely unpleasant." Even more than the original.
* ''Series/TheTonightShowWithJayLeno'' in the 90's had Jay playing different characters such as Iron Jay and Beyondo. The character of his that fits right in this trope is Evil Jay who appears at every full moon. Years before that, Jay Leno satirized the entire 'evil twin' trope when a guest on ''Series/TheTonightShowStarringJohnnyCarson''. Leno had a marked-up ''TV Guide'' and showed what seemed like a dozen 'evil twin' themed shows for that one week. There was one on ''Hawaii Five-O''. The bit wrapped with ''Series/Dynasty1981'', which had Crystal replaced with her 'scheming lookalike', with Jay shouting, "Scheming lookalike? Scheming lookalike? It's an '''EVIL TWIN'''!". This trope is so endemic in television that perhaps we should be asking which shows never did it.
* ''Series/TheTwilightZone1959'': "Mirror Image" has the protagonists haunted by apparent malevolent doubles. Somewhat averted, as the seeming evil doubles do little more than watch their counterparts, sometimes smiling darkly.
* The short lived TV series ''Series/{{Two}}'' was based on this concept. A man is WronglyAccused of a murder committed by his SeparatedAtBirth twin brother and goes on the run to ClearMyName.
* ''Series/TheVampireDiaries'':
** The series plays pretty heavily on this trope, as Elena learns that her identical-appearing ancestor Katerina Petrova is [[spoiler: alive and regularly killing people as a vampire named "Katherine"]], and both are part of a supernatural heritage of reincarnated {{Doppelganger}}s. Over the entire show, lead actress Creator/NinaDobrev plays three versions of the Petrova Doppelgangers -- all of whom eventually make out with fan favorite [[spoiler: Elijah]]!
** In the Season Four episode "American Gothic", ImpersonatingTheEvilTwin is done to entertaining effect as [[spoiler: Nina Dobrev plays No-Humanity-Emotionless Elena sitting across from Katherine in a lunch booth and does a workable impression of her own acting, but she needs to try a few times to capture "just the right level of contempt and hidden insecurity."]]
** Silas to Stefan. Stefan is the doppelganger of Silas. Therefore, Silas is the EvilCounterpart to Stefan, who is the GoodCounterpart.
* In a ''Series/WizardsOfWaverlyPlace'' episode, Alex gets her replica out of a picture, using a special machine. Their lines suggests that Alex is actually [[{{Jerkass}} the]] [[ManipulativeBastard bad]] [[MagnificentBastard one]] of the two:
-->'''Alex:''' Goodness. I do look good in that dress. (she turns around) Baby Rockford, put that dress on, we got a fashion show to save.
-->'''Alex's replica:''' No! I like this dress...
-->'''Alex (''turns to her replica''):''' Alex, can I talk to you over there for a second?
-->'''Alex's replica:''' Sure! (''she walks away'')
-->''Alex grabs a heavy object from a shelf, then follows her, with a dark scowl on her face.''
* ''Series/WKRPInCincinnati'' did it with Venus Flytrap being suspected of crimes that were committed by a pimp-dressed Evil Twin complete with the obligatory goatee.
* In the 1990s ''Series/{{Zorro|1990}}'' series, Don Diego has an evil (though not identical) twin. Also, the evil Alcalde is at one point replaced by his identical twin, who raises the suspicion of the other characters by being somewhat less evil than the real Alcalde.

[[folder:Music]]
* Music/DanielAmos's ''Music/{{Doppelganger}}'' explores the idea that everyone on Earth has a double: "For me, therefore, everything has a double existence / Both in time and when time shall be no more." Of course, those doubles were made perfect in the afterlife--meaning that [[HumansAreFlawed those of us here on Earth are the evil twins]].
-->I'm his injustice sometimes \\
I am his wrong \\
It will be right again when \\
Christ rules over
* Music/{{Kamelot}}: The album ''Music/{{Silverthorn}}'' has the unnamed protagonist framed for murder by his twin brother, Robert -- specifically, Robert murders the protagonist's wife, then convinces everyone via ThePowerOfActing that he is the protagonist and the protagonist is him. Initially, the twins were very similar, but their [[AbusiveParents father]] focused his abuse mainly on Robert after the death of the twins' younger sister, leading Robert to snap. It should be mentioned that according to some EpilepticTrees, Robert may be a SplitPersonality of his unnamed brother and not a real person.

[[folder:Myths & Religion]]
* Literature/TheBible may be the TropeMaker, with Esau as the evil twin of Jacob. Interestingly, they were ''not'' identical twins. Also, they reconciled eventually.

[[folder:Pinballs]]
* The MirrorUniverse Lt. Uhura in Creator/DataEast's ''[[Pinball/StarTrekDataEast Star Trek]]'' pinball game.
[[/folder]]

[[folder:Podcasts]]
* New fans of ''Podcast/WelcomeToNightVale'' could be forgiven for assuming that Kevin is the good twin to Cecil's NightmareFuelStationAttendant... until they saw [[EvilIsVisceral the inside of Kevin's radio booth]].
* ''Podcast/RandomAssault'': Slabflapper is one to Matt, in that he's literally a negative version of Matt. His skin is blue, like a film negative.
[[/folder]]

[[folder:Video Games]]
* Sabata is this to Django in ''VideoGame/{{Boktai}}'' [[spoiler:at first. It's revealed quickly that he's not really evil so much as just [[TheFatalist a fatalist]] who had [[RaisedByOrcs one hell of a stepmom]], and she raised him with a healthy dose of TheCorruption. He even has a HeelFaceTurn and becomes a playable character in the sequels.]]
* ''VideoGame/DevilMayCry'' has Vergil, who despises his humanity and does questionable things to assuage his power cravings, unlike Dante who dislikes his demonic heritage and fights demonic incursions.
* ''VideoGame/{{Disgaea 4|A Promise Unforgotten}}'', [[spoiler: has Des X, who differentiates herself from her far more likable counterpart Desco with a pale color scheme, a cold personality, and a mature voice that is not fitting for her [[{{Moe}} appearance]].]]
* This was the whole point of the series ''Two'': The evil one is the first to discover he has a twin, and frames him for his own crimes.
* ''VideoGame/BodyHarvest'': The Man in the Black Suit. [[spoiler:Revealed to be ''literally'' your evil twin at the end of the game. The invading aliens sampled a droplet of Adam's blood that was shed during the game's intro sequence, and used it to create a perfect copy of him]].
* In all of the ''VideoGame/{{Scribblenauts}}'' games, if the player tries to create "Maxwell" as an object (he is the protagonist), it will create Maxwell's evil twin, who has a different colour scheme to Maxwell and will create random objects using his own notepad.
* The plot of ''VideoGame/MetalGearSolid'' is all about this. The protagonist and his maniacal twin are the products of research into "soldier genes". The hero, Snake, was supposedly modified to have the strongest possible soldier phenotype, and the maniacal Liquid Snake was meant to be the weakest. It's subverted twice:
** At the end of the first game, it's revealed that Liquid was actually the superior twin.
** And ''VideoGame/MetalGearSolid2'' [[spoiler: reveals a third 'twin', also not very nice.]]
** Well, it's not a clear-cut Evil Twin, more like Liquid's just more evil than Solid Snake, since Solid Snake himself is technically an evil twin in his own respect, given the fact that he was a clone of Big Boss, and that it was heavily implied in Metal Gear Solid that he does actually enjoy war and all the killing, and the implications came from Psycho Mantis, Liquid Snake, and even one of his own allies, Meryl Silverburgh. However, even Liquid being more evil is completely debatable, given the fact that Psycho Mantis also mentioned that Solid Snake was true evil, and that he was even worse than Liquid Snake.
* In ''VideoGame/WorldOfWarcraft'', players that use a transporter to Gadgetzan can be turned into their evil twin. Blizzard neglected to add goatees to the character models, unfortunately. As a BrickJoke, there's a female gnome imprisoned in Talramas in Borean Tundra, and when she attempts to escape she accidentally releases her Evil Twin. Said twin can later be fought in Hrothgar's Landing near Icecrown as part of a quest given by The Leaper after the Knights of the Ebon Blade take control of the Shadow Vault.
** Due to GameplayAndStorySegregation, being turned into your Evil Twin by the "Ultrasafe" transporter does not affect the game or your character at all. It just gives you a harmless temporary debuff with amusing text stating you've been turned into your evil twin.
* A common theme in ''VideoGame/ZoneOfTheEnders'': The main player's HumongousMecha with a decidedly intelligent AI whose cockpit [[FallingIntoTheCockpit he ends up in]] is always part of a pair created for a specific purpose. Guess where the other one ends up?
* In ''VideoGame/SilentHill3'', Heather meets and fights her twin, which appears to be [[spoiler:incarnate ''Memories of Alessa'', as Heather and Alessa are basically the same person (nuances exist, however)]].
* Done in ''VideoGame/NoMoreHeroes'' [[spoiler:when the well dressed Irish-brogue accented swordsman Henry says he's your twin brother... in the last three minutes of the game. Plus, considering how the Touchdown/Crystel/Whatever brothers behave it's hard to tell which one is evil. Also, it is probably the greatest parody of [[VideoGame/DevilMayCry Dante and Vergil]] you'll ever see.]]
* In the ''VideoGame/FZero'' series, there's Blood Falcon, who was literally cloned from Captain Falcon, and wears the exact same clothes in a different color. In a nice touch, however, their racing machines are rather different.
** The machine change is justified: The scientists that cloned Falcon realized Blood would have no chance against the Captain if they had identical machines: Captain Falcon is just way too skilled with his vehicle.
* In ''VideoGame/MegaManBattleNetwork 4'', the final boss creates a dark version of Mega Man, simply titled "[=DarkMega=]" in the game's sequel.
** In the sequel, ''Battle Network 5'', [=DarkMega=] is [=MegaMan=] himself, just tainted.
** In the manga adaptation, Dark [=MegaMan=] is its own standalone character.
** In addition, several boss characters in ''Battle Network 4'' and ''5'' have "DS" versions, dark versions of themselves that stray from their attacking pattern to bombard you with any Battle Chip you've used, even Program Advances.
* ''VideoGame/SuperRobotWarsOriginalGeneration'' has Beowulf, the [[MirrorUniverse Shadow Mirror universe]] version of [[VideoGame/SuperRobotWarsCompact2 Kyosuke Nambu]]. In ''Original Generation 2'', he's shown to pretty much be identical to Kyosuke, but ''[[UpdatedRerelease Original Generations]]'' and ''[[AnimatedAdaptation The Inspector]]'' is [[AxCrazy completely psycho]] and obsessed with destroying and recreating the world. The explanation for Psycho!Beowulf is pure ForWantOfANail: [[spoiler:In both universes, Kyosuke and Excellen were in a terrible shuttle accident. In the main universe, Kyosuke survived due to his [[BornLucky incredible luck]] while Excellen was technically killed and brought back to life by the plant-like aliens called the Einst. In Shadow Mirror's world, the Einst grabbed Kyosuke instead, while Excellen's corpse was turned into the android [[VideoGame/SuperRobotWarsAdvance Lemon Browning]]; without the balancing influence of her lighter personality, Kyosuke went off the deep end.]] So far he's only made brief appearances, but fans speculate that he'll become a prominent villain in future games.
* Mona Sax, the "knockout FemmeFatale" of ''VideoGame/MaxPayne'', introduces herself as the "evil twin" of Lisa Punchinello, the Don's wife. Lisa is killed by the Don near the end of the second act, and Mona shows up later during the [[StormingTheCastle final assault on the Aesir building]], where she does a HeelFaceTurn and apparently dies, only to show up again in the sequel, in which she plays a major role as Max's partner/love interest.
* In all three episodes of Apogee's ''VideoGame/MonsterBash'' you end up having to fight Johnny Dash's evil twin. These fights are somewhat harder than most enemies partly because the evil twin can take more damage than most monsters and partly because the evil twin uses the exact same sprite graphics as the player's character, making things confusing at times.
* Subverted in ''VideoGame/SagaFrontier'' with Blue and Rouge. Blue is one of the seven main characters. Rouge is a secondary character. They are doomed to fight each other to the death. [[spoiler:Now, since Blue is a main character, you'd think he's the good one, right? ''Wrong''. Blue is very willing to manipulate others for his own means, whereas Rouge is a friendly, personable guy who will join others on their quest.]] Subverted further in that [[spoiler:the two are different halves of the same person, split at birth -- several types of magic in the Saga Frontier world are mutually exclusive, so if you learn one type, you can't learn the other; splitting him in two lets both halves learn different types (and Blue is told early on that if Rouge learns a type of magic, Blue ''can't''). The "fight to the death" is actually how the two recombine.]]
* [[DefiedTrope Defied]] by Dark Pit from ''VideoGame/KidIcarusUprising''. The Mirror of Truth broke before the "evil" part could be finished, spitting out a WildCard ShadowArchetype whose very first act is an OffhandBackhand to his creator. He was supposed to be Dark Link, but ended up as Shadow the Hedgehog.
* About halfway through ''VideoGame/RatchetAndClankUpYourArsenal''. Clank gets kidnapped by BigBad Dr. Nefarious and replaced by a duplicate, Klunk. Ratchet even plays a few levels with [[TheMole Klunk on his back]] before finding the real Clank and defeating Klunk in a boss battle. Klunk later returns in the [[AlternateContinuity non-canon]] ''VideoGame/SecretAgentClank as the BigBad, now sporting a BeardOfEvil.
** The SoapWithinAShow mentions that Lance has an evil twin named Engelbert, who fathered Janice's child. It is implied that Lance made him up, though Engelbert is mentioned in TheStinger for ''VideoGame/RatchetDeadlocked''.
* ''VideoGame/BanjoTooie'' had the Jinjos' evil twins the Minjos, and one of the bosses in the game was Mumbo Jumbo's evil robotic twin Mingy Jongo.
* Statesman, the resident [[AlternateCompanyEquivalent Superman equivalent]] and BigGood of ''VideoGame/CityOfHeroes'', has ''two'' evil twins: Tyrant, the DimensionLord of the MirrorUniverse, and Reichsman, the little-seen [[ThoseWackyNazis Nazi version]] from the [[StupidJetpackHitler dimension where the Nazis won]]. Naturally, pretty much every high-profile hero in the game has an evil counterpart in Tyrant's dimension, as the Praetorians. And as of Issue 17, every player character -- hero and villain -- can run a story arc featuring multiple iterations of his or her own Evil Twin. Heroes will also encounter a good doppelganger during their arc.
* In ''VideoGame/SkiesOfArcadia'', actors-turned-robbers Vize, Anita, and Faina appear as {{Palette Swap}}s to heroes Vyse, Aika, and Fina, which has unfortunate results for the silhouettes on the Wanted poster (even though the heroes are already wanted as pirates, [[ThePiratesWhoDontDoAnything sort of]]). Turns out they even mirror several of the heroes' moves. When you beat them, [[spoiler:they make a legitimate business out of looking like you]].
** They're also pretty darn tough to beat; though having a fourth party member helps lean the odds to your side.
* ''Franchise/FinalFantasy'':
** One of ''VideoGame/FinalFantasyXII's'' plot twists was that [[spoiler:Basch, a leading soldier in the home nation's army, was framed by his evil twin brother in the murder of the king, resulting in Basch's imprisonment and nationwide condemnation.]]
*** He does [[spoiler: [[HeelFaceTurn become a little less evil]] [[RedemptionEqualsDeath right around the endgame, though.]]]]
** The Manikins of ''VideoGame/DissidiaFinalFantasy'', living (though not sentient) crystal lifeforms that can take on the form of anyone who gets too close might count.
* In the VideoGame/NancyDrew game ''Stay Tuned For Danger'', actor (and suspect) Rick Arlen plays good and evil twins on the [[ShowWithinAShow soap opera]] ''Light Of Our Love''.
* In ''VideoGame/Persona4'', ''every single person in existence'' -- except, it seems, the Protagonist [[spoiler: until the final episode of the anime]] -- has an evil twin called a "Shadow" born of their repressed feelings and thoughts. Get stuck in the [[MentalWorld TV world]], and you'll end up meeting it.
* ''VideoGame/Persona2'' also had evil Shadows based off people's inner selves, though their abilities and the circumstances behind their appearance are somewhat different.
* Sega's other mascot,[[VideoGame/NightsIntoDreams NiGHTS]] has an evil twin called Reala, who was created alongside the purple dream jester to with a similar appearance, and the same abilities. After the neutral protagonist began to fight against Wiseman, Reala was granted the ability to summon exploding orbs to gain an edge over [[PronounTrouble his/her/its]] twin.
** A bit of a reversal from the ''VideoGame/NightsIntoDreams'' series. The titular character is the ''good twin'' of a pair of nightmares.
* ''VideoGame/Mother3'' follows this literally. [[spoiler: Lucas]]'s twin brother, [[spoiler: Claus]], becomes evil [[spoiler:after being reanimated and manipulated by Porky's minions]].
* ''[[VideoGame/JetSetRadio Jet Set Radio: Future]]'' has NT-3000, a robotic doppleganger of Yoyo that infiltrates the [=GGs=] when the Rokakku kidnap the real Yoyo ("NT" being short for "Noise Tanks", a rival gang).
* In ''VideoGame/TombRaider'' and ''Tomb Raider Anniversary'', Lara's Doppelganger has no skin. In ''Underworld,'' she gets better, blows up Lara's mansion, kicks her ass inside of her burning mansion, and kills [[spoiler:Allister]]. Later, [[EnsembleDarkhorse the Doppelganger]] gets her own game on Xbox Live.
* [[SdrawkcabName Xitra Regeirk]], the BigBad of the ''VideoGame/AdventureQuest'' Bizarre Flecks StoryArc is Artix's AlternateUniverse counterpart; while the Artix of our reality is an [[TheUndead undead]]-[[HunterOfMonsters slaying]] paladin, [[FanNickname Artix von Facial Hair]] is a sadistic {{necromancer}} who appears to have [[VillainWorld successfully]] [[TakeOverTheWorld taken over his world]]. Ryuusei's analog from said arc is an [[InvertedTrope inversion]], and an interesting and competent one at that.
* ''VideoGame/MagicalGirlLyricalNanohaAsPortable'': Nanoha, Fate and Hayate got their very own Evil Twins in the form of The Darkness of the Book of Darkness copies Material-S(tarlight), Material-L(ightning) and Material-D(arkness), respectively, in the PSP game ''Battle of the Aces''. They are identical to their good analogues, except that they are stronger, their skills can't be customized, they have different hair and clothes colors, and their personalities are complete opposites of the originals ([[TheSpock Material-S is coldly logical]], Material-L is TheBerserker, and Material-D [[BigBad is just plain evil]]). The sequel, ''The Gears of Destiny'', [[DivergentCharacterEvolution would make them a bit more unique]], with names, individualized movesets, and more complex personalities.
* ''VideoGame/EvilTwinCypriensChronicles'' is an entire game revolving around this trope. The hero winds up in another world where he fights evil versions of his friends [[spoiler:and himself.]]
* ''VideoGame/ViewtifulJoe'' has "Another Joe", who looks just like Joe to the point the original makes a deal with him: loser has to wear a yellow outfit. His boss theme is even a BossRemix of "Joe the Hero". [[spoiler:It's actually Alastor.]]
* ''VideoGame/{{Borderlands}}'': Dr. Zed and his evil MadScientist brother Dr. Ned ([[SuspiciouslySpecificDenial who is a totally different, in no way made up person]], [[RunningGag and not just Dr. Zed in a cheap mustache disguise]]) qualify for this trope.
* In ''VideoGame/PokemonColosseum'', the TrueFinalBoss is [[spoiler:Fein, a Cipher Peon who is a MasterOfDisguise. He disguises himself as Wes to try to ruin Wes' reputation, and almost succeeds, but after Wes himself defeats him at the Outskirt Stand on live television, the truth comes out, and the citizens of Orre forgive him. Fein has the most powerful team of Pokemon in the game, and holds the final Shadow Pokemon, a Togetic.]]
* In ''VideoGame/SpaceAce'', Dexter has a clone named Hexter. He energizes into a bigger form when Dexter energizes into Ace (Should you choose to do so).
* ''VideoGame/DuelSaviorDestiny'': [[spoiler:Rico/Oltara]] has an Evil Twin of sorts in the form of Imnity. Introduced in the fifth chapter, she is a spirit that is opposite but mostly identical to her 'twin' that follows a different set of rules and has a parallel goal. The evil bit is slightly questionable, though, since she genuinely believes she's doing the right thing and doesn't appear particularly sadistic.
* In ''VideoGame/NintendoLand'', Monita has an evil twin, Dark Monita, who is a self-proclaimed EvilOverlord. She is introduced to players in Pikmin Adventure. She also builds some Pikmin enemies and tends to spawn them all over the place at a given time to attack you and your Pikmin.
* ''VideoGame/LightningReturnsFinalFantasyXIII'' has Lumina, who bears an eerie resemblance to Lightning's sister Serah [[spoiler:who died in the previous game]]. She constantly antagonizes Lightning, but [[JerkWithAHeartOfGold shows a bit of a lighter side in her actions]]. Turns out her resemblance is because [[spoiler:Lightning subconsciously created Lumina from her desire to seal away her "weaknesses", with Lumina becoming a vessel for Serah's soul]].
* In ''VideoGame/LittleBigPlanet'' guest players get a subtitle based on their controller number, like Best Friend. Playing as a guest on the number one controller nets you this title. One of the titles is also "Good Twin."
* Cave Prime from ''VideoGame/Portal2'''s Perpetual Testing Initiative has an evil alternate dimension twin, named Dark Cave. He asks you to find him, with no avail. They eventually end up being friends at the end.
* Absolute Zeroth ''VideoGame/LegacyOfHeroes'' [[spoiler: He's actually a second Zeroth that separated from the original]]
* The HiddenObjectGame series ''Empress of the Deep'' reveals that Anna, the protagonist and TheChosenOne, has an evil twin sister named Pandora, who attacked her in a jealous rage and put her in a coma for over 100 years. The story of the games has Anna navigating her way through the empty settings and foiling her sister's plans to destroy her.
* In ''VideoGame/MassEffect3'', the BigBad of the ''Citadel DLC'' is [[spoiler: a Cerberus-created Clone of Commander Shepard, [[IJustWantToBeSpecial jealous]] about being created simply as a WalkingTransplant for them and now hell-bent on [[KillAndReplace replacing]] the original. In a realistic touch, the clone comments that while they have the same DNA, their fingerprints are different.]].
* ''VideoGame/PuyoPuyo'' has not one, not two, not three, but '''FOUR''' examples!
** ''Puyo~n'' (and by extension the original ''Madou Monogatari'' series) has Doppelganger Arle, who masqueraded as Pierrot, brainwashed Satan, and kidnapped Carbuncle to lure out Arle and personally battle her.
** ''Waku Puyo Dungeon'' gives us Doppelganger Schezo, a product of the Space-time Crystal and Schezo's stolen magic.
** [=Discstation=] side game ''Comet Summoner'' has Dark Witch, the final boss within Witch's dream world.
** ''Chronicle'' gives us Rafisol, a manifestation of hate that spawned from Ally's amulet and serves as the FinalBoss of the game. Unlike the above examples though, [[spoiler:she actually pulls off a HeelFaceTurn after her defeat]].
* ''[[UpdatedRerelease Ultra]] VideoGame/StreetFighterIV'' gives us Decapre, who serves as this to Cammy.
* Neifirst from ''VideoGame/PhantasyStarII'' is the main personality of Nei. When Neifirst goes berserk and creates biomonster outbreak, her good part rejects her actions and splits up into the CuteMonsterGirl who joins your team.
* In ''VideoGame/AlanWakesAmericanNightmare'' the villain Mr. Scratch is a HumanoidAbomination variation on an EnemyWithout, wearing the protagonist's shape to manipulate events in service of a larger EldritchAbomination, though his roots in Alan's psyche mean he's hopeful of attempting a KillAndReplace.
* A mission in ''VideoGame/SaintsRowIV'' introduces The President's Evil Twin, who uses the player's custom appearance but with an eyepatch and goatee, irrespective of gender.
* You encounter Dark versions of various characters in ''VideoGame/MarvelUltimateAlliance'', including ComicBook/CaptainAmerica, ComicBook/SpiderMan, and all of the ComicBook/FantasticFour, mostly created by [[BigBad Dr. Doom]]. They also appear occasionally in the simulator discs, usually with no real explanation (in Dark Spider-Man's case, he presumably appeared in ComicBook/{{Deadpool}}'s simulator mission [[RuleOfFunny because he was the funniest option]]).
* Jimmy Lee in the NES version of ''VideoGame/DoubleDragonI'', being the "Shadow Boss" of the most powerful organised crime gang in New York. [[HeelFaceTurn One ass-kicking by his brother Billy later, he goes legit.]]
* ''VideoGame/Waxworks1992'' has this as a major part of the story: A witch cursed your family in the past so that, whenever twins are born to it, one of them will always be evil. These include Vlad the Impaler (who [[DeathByIrony killed the witch himself for not lifting the curse when asked]]), UsefulNotes/JackTheRipper, an evil Egyptian priest, an old necromancer named Vladimir and a [[WasOnceAMan plant creature that doesn't even look human anymore]]. And other than Vlad, you must travel back in time to take them all down in the body of the good twin on the way to undo the curse. [[spoiler:And right as the game is coming to an end, and your brother tells you the dream he saw of the final curse-lifting event, it's revealed that ''you'' [[TomatoInTheMirror were the evil twin the entire time]]]].
* In the fourth ''VideoGame/DetectivesUnited'' game, it's revealed that Agent Brown has a twin brother, Mortimer, who is wreaking havoc on a small community called Restville. Naturally, SpotTheImposter comes into play as part of the story -- the difficulty is enhanced by the fact that the twins, who have the same voice, are also both ''[[spoiler:invisible]]''.
* A version of this shows up in ''VideoGame/DragonAgeOrigins'' during the Gauntlet. As one of the final challenges before the party reaches the last chamber, they are forced to contend with evil mirrors of themselves. (Which ones appear, and consequently what abilities they have, depends on who is in the active party.) Companion Leliana may comment on it afterward, noting that "the other me" had a truly evil expression on her face, and begging to be assured that she herself doesn't really look like that.
* There's an unused [[MechaMooks enemy robot]] in the game data for ''VideoGame/{{Descent}}'' II that is literally called the "Evil Twin". It's a green-tinted version of the [[RobotBuddy Guidebot]] that is programmed to [[ActionBomb charge the player and explode]].
[[/folder]]

[[folder:Western Animation]]
* An inversion in ''WesternAnimation/AdventuresOfTheGalaxyRangers'': crime boss Jackie Subtract has a twin brother, Aiden. Aiden is a harmless inventor with a squeaky-clean criminal record who is mistaken for his brother far too often for his liking.
* ''WesternAnimation/TheAdventuresOfPussInBoots'' features an evil twin of Puss in Boots from TheMultiverse, who after discovering the existence of said multiverse seems to be no longer content just being emperor of his own world, but wanting to conquer the entire multiverse as well.
* In ''WesternAnimation/AladdinTheSeries'', Chaos makes an evil twin of Aladdin when he discovers that Fate has destined that Aladdin always wins. To even Chaos' surprise, it came with an evil Genie as well.
* An interesting example in one episode of ''WesternAnimation/AmericanDad''. Stan and Francine debate whose methods of child-rearing are better, so Stan puts it to the test: he has the CIA clone Steve and raises that one (whom he dubs "Stevearino") while Francine takes care of the original. As a result of Stan's Spartan methods, Stevearino turns into a brutal psychopath who kills cats for fun[[note]]For the record, Francine's babying ends up turning Steve into a fat, lazy slob who takes advantage of her kindness, showing that the two of them have to balance each other out[[/note]].
* PlayedForLaughs in ''WesternAnimation/{{Arthur}}'' episode "Binky Rules". When Binky Rules graffiti is going up around the school Binky gets blamed for it. Buster tries to solve it, and comes up with the theory it is being done by Binky's evil twin who is trying to ruin Binky's life so he can take over.
* In the first season finale of ''WesternAnimation/TheAvengersEarthsMightiestHeroes'', ComicBook/CaptainAmerica gets knocked out, then duplicated, by a Skrull invader. This Skrull eventually breaks up the Avengers, then tries to sway human support for his race re-colonizing the Earth and enslaving them.
* ''WesternAnimation/BatmanTheBraveAndTheBold'' "Deep Cover for Batman" features a version of the alternate-universe evil Batman counterpart Owlman who's appeared elsewhere--he doesn't match any recognized iteration, though; is not Thomas Wayne Jr. or the [[NietzscheWannabe existentialist type]]. Brave and the Bold isn't really in Earth-1, so presumably its Mirror World isn't really Earth-3. Also features a ''good'' Joker who wears something like the Red Hood costume from one of his back stories and goes by that name. Somewhat cracked, but a good guy. Slight Mid-Atlantic accent.
* Albedo in ''WesternAnimation/Ben10AlienForce'' and ''WesternAnimation/Ben10UltimateAlien'' is an evil Galvan who created an Omnitrix that worked by copying Ben's, and therefore had the "default setting" of looking like Ben, rather than a Galvan. He was then {{Mode Lock}}ed as a PaletteSwap of Ben when the Omnitrices reacted to each other.
* In the ''WesternAnimation/BountyHamster'' episode "Twin Cheeks", Cassie comes across the roughest, toughest bounty hunter around -- her alternative universe self! While certainly meaner, she actually turns out to be not quite as bright, and loses to the Real Cassie in a game of spaceship chicken.
* ''WesternAnimation/BuzzLightyearOfStarCommand'':
** Evil Buzz Lightyear, a Buzz from an alternate reality who's, well, completely evil as opposed to our hero. And, of course, there's a [[BeardOfEvil beard...]]
** Zurg also creates a whole team of evil counterparts to the heroes via cloning (and building them a robot counterpart to XR when they insist). Said clones were not aged to adulthood, however. At the end of the episode, in an aversion of NeverRecycleYourSchemes, he tried it again, but aged them too long and got evil senior citizens.
* ''WesternAnimation/CaptainPlanetAndThePlaneteers'' had a plot where the series villains got together and made evil clones of the Power Rings. When the powers combined, they created Captain Pollution, an evil twin of Captain Planet who thrived on pollution and was weakened by clean, pure things.
* Gadget's lookalike, Lahwhinie, from the ''WesternAnimation/ChipNDaleRescueRangers'' episode "Gadget Goes Hawaiian" is considered by many to be Gadget's evil twin. How or even if the two characters are related is a subject of debate amongst fans of the show.
* ''WesternAnimation/CodenameKidsNextDoor'':
** The episode "Op POOL" features evil twins from a MirrorUniverse, including a goateed Numbuh Four and backwards acronyms for the organizations (with the KND becoming the DNK, for Destructively Nefarious Kids).
** The Delightful Children from Down the Lane and their Father are evil twins of their counterparts from that universe. It's implied but not confirmed the same applies to the other villains from the mainstream universe.
* Lucius and Wayne Cramp, from ''WesternAnimation/TheCrampTwins''. Though it's more of a good twin, annoying bully and ridiculously filth-loving twin. [[AmazingTechnicolorPopulation With purple skin]].
* The Franchise/DCAnimatedUniverse, particularly ''WesternAnimation/SupermanTheAnimatedSeries'' and ''WesternAnimation/JusticeLeague'', has made extensive use of the evil twin concept.
** In ''Superman'', Superman encounters his "Bizarro" counterpart, a degenerate clone created by ComicBook/LexLuthor. In another episode, Lois Lane finds herself in an alternate universe where her death resulted in Superman becoming an [[KnightTemplar unhinged tyrant.]]
** ''Justice League'' featured another good-guys-turned-bad alternate universe where, after Flash's death, the "Justice Lords" crossed the line by executing Luthor and taking over the world.
** Batman faced a ''robotic'' evil twin of himself in ''WesternAnimation/BatmanTheAnimatedSeries''.
** Robotic, yes. Twin, yes. Evil? Batman himself wondered at the end of the episode if it had managed to develop a soul, since it was in anguish at the thought that it might've accidentally killed him (the Bat). So evil -- not so much, no.
** Yeah, for half the episode you feel nothing but sorry for the poor guy, and pissed with Bats and Alfred for being all WhatMeasureIsANonHuman on him. Then he gets possessed by the crazy supercomputer that made him (a BigBad from a previous episode), and has glowy eyes and tries to take over the internet and use it to replace all humans with androids. ''Then'' Bats [[NiceJobBreakingItHero twigs what a nice guy he was before]] and tries to [[TalkingTheMonsterToDeath talk him down]] while fighting. Thinking he's killed Batman causes Batbot great pain, so in horror he goes and commits suicide by smashing the Batcomputer and preventing it from taking over the internet.
** Don't forget Galatea, LawfulEvil pawn of the Cadmus project. TwinTelepathy between her and Supergirl ''may'' have led her to develop a conscience about her actions -- enough to hesitate from killing ComicBook/TheQuestion when he [[BatmanGambit challenges]] her to do so. But by the time of 'Panic in the Sky', she gives only a mocking reference to fighting the Justice League because they're dangerous, and promptly admits she's in the fight to kill Supergirl.
** [[ComicBook/{{Brainiac}} Braini]][[ComicBook/LexLuthor thor]] created evil Justice Leaguers to battle the real team once. They were based on the Justice Lords. Since there wasn't a Justice Lord Flash (since the Flash's death was [[ForWantOfANail the nail in that universe]]), Flash gets a duplicate based on Professor Zoom (heretofore unseen in the Franchise/{{DCAU}}, so more like a ShoutOut to him.)
* In ''WesternAnimation/DarkwingDuck'', there's the the recurring villain Negaduck (II), his evil MirrorUniverse counterpart. (Negaduck (I), DWD's "evil side" who was merged back into him by the end of the episode, is more of an EnemyWithout.)
** Reportedly, both versions were [[AbortedArc meant to be]] explained/[[RetCon retconned]] to be the same character, though it's hard to imagine how that would have happened.
** Interestingly, Darkwing's evil side -- Negaduck (II), but also his non-galvanized EnemyWithout, who acts almost identically -- seems to bring out his ''good'' sides in a non-moral sense. The original is so conceited and bumbling he often can't get anything done until he really [[LetsGetDangerous gets dangerous]], but Negaduck is simply constantly angry and doesn't stop to pose or fool around. Because of this, the Evil Twin in this case has more attitude and is much more badass much of the time. Of course, he does have the drawback of being compulsively evil for its own sake and AxCrazy.
** In a visit to the Negaverse (Negaduck (II)'s place of origin) DW meets the Good Twins of Megavolt, Quackerjack, The Liquidator, and Bushroot, a superhero team identified as the Friendly Four.
** And, in the same Negaverse, there are evil versions of Launchpad and Honker; Tank (pretty rotten in reality) is good. Oddly, Gosalyn in the Negaverse isn't evil.
* ''WesternAnimation/DextersLaboratory'':
** Parodied in the episode "Dollhouse Drama", which is also a parody of the SoapOpera concept in general.
** The unaired episode "Dexter's Rude Removal", where Dexter builds a machine to take all of Dee Dee's rude/annoying behavior out of her. It ends up creating "twins" of both Dee Dee and Dexter-not so much evil, more like foul-mouthed jerks.
* The cartoon version of ''VideoGame/DragonsLair'' had a episode called "Mirror Mirror", in which Singe disguises himself as Dirk to trick the village people. The episode ends with two morals. The second one? [[spoiler: "Evil dragons should learn how to swim."]]
* PlayedForLaughs in the episode "Aged Heat" of ''WesternAnimation/DuckMan'', after his family mocks his detective skills, Duckman is convinced that his comatose mother-in-law was replaced by an impostor. It turns out that [[spoiler:he's ''absolutely right''. The impostor is Agnes Delrooney, a known criminal and exact look-alike who escaped from prison.]]
* PlayedForLaughs in the ''WesternAnimation/DuckTales2017'' reboot: when asked which of the Duck brothers was the "evil triplet," Huey and Dewey ''immediately'' point to Louie... who shrugs and accepts it. (Fans joked that he definitely earned it after putting the idea of [[spoiler:Donald/Beakley]] in their heads.)
** It should be noted that he ''does'' seem to be the most amoral of the triplets, being materialistic, selfish, sarcastic, and perfectly willing to lie to others. [[JerkWithAHeartOfGold He's still a good guy, though.]]
** In Season 2 he actively claims this status when trying to get Goldie O'Gilt to teach him her con artist ways, but she is unimpressed.
--->'''Goldie''': Better luck next time, rookie.\\
'''Louie''': ''Rookie?!'' I'll have you know I am the ''evil triplet'', okay?!\\
'''Goldie''': Sure, you're the scariest bunny in the pet shop.
* ''WesternAnimation/EarthwormJim'':
** Played straight by the titular character's evil twin, Evil Jim. His debut episode both lampshaded this trope's appearance on superhero shows in general ("Superheroes and evil twins are like peanut butter and...''[[{{Dissimile}} evil]]'' [[{{Dissimile}} peanut butter]]!") and mocked the 'your opposite in every way' aspect.
--->'''Jim:''' If I hate losing, then you must love it! So why not give up now?
--->'''Evil Jim:''' Oh, don't be so literal-minded.
** Comically subverted and inverted in one episode, where Evil Jim gets tired of being the only Evil Twin in the universe and uses a [[AppliedPhlebotinum Negative Synthesizer]] to create evil versions of Earthworm Jim's sidekicks, who are polar opposites -- the evil version of Peter the Puppy turns into a polite, friendly version of [[SuperpoweredEvilSide Monster Dog]], and the evil version of Princess Whats-Her-Name is lazy and unwilling to fight, contrasting the warrior princess original. However, halfway through the episode the Synthesizer accidentally creates good twins of all of the series' recurring villains, including this most humourous exchange:
--->'''Good The Cat:''' I am Good the Cat. Would you be my friend?
--->'''Evil The Cat:''' I think not. Instead, I will destroy you with an acid furball.
--->'''Good The Cat:''' Then I will neutralize it with an antacid furball.

--->'''Evil The Cat:''' Curses!
--->'''Good The Cat:''' Kisses!
** In the same episode, the original Jim manages to snatch the Negative Synthesizer and invert the trope via shooting Evil Jim with it several times, creating an army of ''good'' Jim clones.
* ''WesternAnimation/TheFairlyOddparents''
** The Anti-Fairies. There's one of them for every Fairy.
** The Crimson Chin's (voiced by Jay Leno) evil MirrorUniverse twin Nega Chin (also voiced by Jay Leno), who appeared in the episodes "Mighty Mom and Dyno Dad Meet the Crimson Chin" and "The Big Superhero Wish". In the former he brought all his villain pals out of the comic, at the end he gets defeated by several versions of the Chin (all voiced by Jay Leno).
* ''WesternAnimation/FamilyGuy'':
** Lois confronts two Peters on a rooftop. They both make claims to be the genuine article, and she finally shoots one. As she hugs the injury-free Peter his face pops off to reveal robotic insides. She asks "What was that?" to which he quickly replies "Nothing", and the scene cuts away.
** See also Peter's evil brother Thaddeus, who is [[DastardlyWhiplash ridiculously over-the-top.]]
** Tom Tucker, the news anchor, tried (rather unconvincingly) to invoke this when he was caught with a prostitute.
** Stewie creates an evil clone of himself accidentally. No goatee, but a clothing-color inversion.
** In "Meg Stinks", Peter gets his hand cut off while driving, but announces that he can regenerate, and grows it back. Cut to the hand regenerating a copy of Peter (with color-inverted clothes), who immediately declares, "My name is [[SdrawkcabName Retep]], and I am evil!"
* In the ''WesternAnimation/FostersHomeForImaginaryFriends'' episode "Squeeze the Day", Bloo fools around with an eyebrow pencil, first drawing BigOlEyebrows and a moustache on his face and pretending to be "Pierre ze Schwan", then adding an [[GoodHairEvilHair evil goatee]] and pretending to be "Pierre's evil brother". Then he drew an ear on the side of his head and claimed he was "Pierre's third cousin." Things got weird when he put on lipstick and said he was "Pierre's girlfriend" and started kissing the mirror until Mac shows up and things get awkward.
* ''WesternAnimation/{{Freakazoid}}'': Gutierrez makes an evil clone of Freakazoid, which he then sends out to create havoc and commit crimes. He's quickly found out when he refuses to attend a Yakov Smirnoff film festival with Sgt. Cosgrove.
* Averted in ''WesternAnimation/FriskyDingo''. When the Xtacles find Xander Crews' mentally retarded twin brother and cure his condition with "brain chemical", he quickly becomes evil and swears revenge on Xander Crews until he is promptly shot in the head by one of the Xtacles. The Xtacle then explains that the entire "evil twin" thing made the plot far too complicated for its own good and the rest of the Xtacles agree.
* ''WesternAnimation/{{Futurama}}'':
** It did a subversion of this trope, where it turned out Bender, as opposed to his "twin" Flexo (another robot of the same model, except with a goatee), had stolen a beauty pageant crown and was ultimately the "evil" one. However, Flexo ended up taking the blame for everything.
--> '''Fry:''' You mean Bender's the evil Bender? I am shocked! Shocked! Well, not that shocked...
** In "The Farnsworth Parabox," Professor Farnsworth creates a box containing a whole other universe, which is identical, except for everyone's color schemes and the outcomes of coin tosses. When the group from Universe A (ours) enter Universe 1 (theirs), each is convinced the other is their evil twins. Bender laments that he tries his hardest, and therefore it hurts that there's a Bender more evil than he.
** Futurama's spoof soap opera "[[SoapWithinAShow All My Circuits]]" also lampshades this with dialogue about the main hero Calculon's ''4th evil identical septuplet''.
%%** ''Evil Lincoln''
* One episode of ''WesternAnimation/GarfieldAndFriends'', entitled "Binky Goes Bad", featured Stinky Davis disguising himself as Binky the Clown, after which he starts a crime wave for which the real Binky is falsely accused and is almost imprisoned until Garfield steps in to prove his innocence.
** {{Lampshade|Hanging}}d by Garfield when he reads up on Davis disguising himself and exclaims, "Oh, no! It's an evil twin story! It's come to that!"
* In ''WesternAnimation/{{Gargoyles}}'', Xanatos had Goliath cloned as one of his attempts to get his very own gargoyle underling. The clone proved to be one of the most evil villains on the show, and it's telling that the normally unflappable Xanatos was visibly bothered by what a cunning and amoral Goliath was capable of(with Owen ominously concluding that he surpassed even Xanatos' genius), and it put him off the "personal gargoyle" idea for good. The clone was unoriginally named "[[SdrawkcabName Thailog]]"; when asked why they didn't name him "Htailog" the writers joked that Creator/KeithDavid (voice actor for both) was a scary guy, and they didn't want to see his reaction at having to pronounce it.
** Notably, the show averted the common "Evil Twin switches for Good Twin" trope; due to a flaw in the accelerated aging process, Thailog's pigmentation is different enough from Goliath's that the two couldn't be mistaken for each other except in very poor lighting.
* ''WesternAnimation/GravityFalls'' has a ShowWithinAShow called ''Duck-tective,'' where the eponymous duck is revealed to have an evil twin brother who shot him in the season finale. [[spoiler: This is a parody of the ''Gravity Falls'' second season mid-season twist revealing that the main protagonist's great-uncle has a twin, albeit not an evil one. Bonus points for the fact that the twin also shot one of the main protagonists in the finale, although it was with a memory gun.]]
* In one episode of ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'', Grim takes Billy and Mandy into a shadow world where their shadows manifests as their opposites. Mandy meets her good double, while Billy meets his [[UpToEleven stupid double]]. And no, that's not a typo. The stupid Billy spends much of the episode barking like a sea lion.
* In the ''WesternAnimation/GummiBears'' turns out that Duke Igthron actually has the opposite: a Good Twin, his twin brother Sir Victor, almost identical except for the fact that Igthorn is dark-haired and has a beard. This comes in handy in one episode when Igthron impersonates his brother, who is an admired hero among the townsfolk and one of the most trusted men of King Gregor.
* ''WesternAnimation/HeManAndTheMastersOfTheUniverse1983'':
** Skeletor uses a magic mirror to create an evil twin of one of He-Man's allies. When the ally tricks Skeletor into allowing a good duplicate into existence, it leads to He-Man asking both Skeletors to claim to be his friend. The original Skeletor is too evil to comply.
** In another episode, Skeletor creates a He-Man impostor named Fakor after temporarily gaining greater magical power. The impostor is last seen plummeting into the abyss surrounding Castle Greyskull after a battle with the real He-Man; Skeletor implies that he intends to recover Fakor somehow, but he isn't seen again.
* One episode of ''WesternAnimation/JacobTwoTwo'' introduces Principal Greedyguts's ''good'' twin, who immediately becomes popular with the kids. The episode then subverts it, [[BitchInSheepsClothing showing him to be]] ''even worse'' than the principal. [[SadistTeacher And that's saying something]].
* An episode of ''WesternAnimation/JohnnyTest'' has Susan and Mary sucking out the negative part of Johnny's psyche; then, during a power outage, the beaker containing it falls and turns into an evil Johnny, while the original Johnny slowly degrades into a NiceGuy.
* Not a real 'evil twin' per se, but Owlman, in ''WesternAnimation/JusticeLeagueCrisisOnTwoEarths'', is exactly like Batman, except a sociopath. To be honest, most of the JLA counterparts are like that, but especially Owlman.
--> '''Batman:''' [to Owlman] There is a difference between you and me. We both looked into the abyss, but when it looked back as us, you blinked.
* ''WesternAnimation/KimPossible'':
** Subverted in the episode "The Ron Factor". The leader of the Global Justice Network, Doctor Director, is shown to have an evil twin named Gemini. He's her evil ''fraternal'' twin, of opposite gender and vastly different appearance, but with an almost identical eyepatch. This is based on Marvel's Nick Fury and his evil twin Scorpio, by the way.
** When Private Dobbs, with whom Dr. Drakken [[FreakyFridayFlip swapped bodies]] to gain access to a weapon, contacts Kim Possible for help and explains that he isn't Drakken, Ron accuses him of being Drakken's evil twin. Kim replies that ''Drakken'' is the evil twin.
* The short lifespan of ''WesternAnimation/MegasXLR'' still had enough time to introduce Coop to an evil AlternateUniverse version of himself and one of Kiva, in the two-parter "Rearview Mirror, Mirror". The weird thing is that Evil Coop was supposed to be competent (as opposed to good Coop's idiocy) but for no reason decided to trade Megas in for a "better" bot (guess he forgot that Megas can shoot FREAKING BLACK HOLES OUT OF ITS CHEST).
* Rikochet from ''WesternAnimation/MuchaLucha'' had his leprechaun-esque evil twin, Rick O'Shay. The fact that the two names are homophonous leads to a WhosOnFirst situation when Rikochet tries to deny the crimes that he's being framed for.
* A ''WesternAnimation/PotsworthAndCompany'' episode featured the Night Mirror, that creates evil twins of good people who look at it. When the ones who look at it are evil, they're the evil twins to their good duplicates. The duplicates (be they good or evil) disappear when they look at the mirror.
* WesternAnimation/ThePowerpuffGirls have the Rowdyruff Boys as their evil twins. Not that [[FanDumb fanfiction writers]] [[ToyShip care]].
** More accurately, later on in the comics (from a planned episode which was supposed to be computer animated, but cancelled due to budget concerns) come the Powerpunk Girls, natives of a MirrorUniverse. (Mojo Jojo is a good guy in their reality.)
* Played with in ''WesternAnimation/ReBoot''. While the "second Bob" is truly evil [[spoiler: (he's really Megabyte in disguise)]], he acts like a good character and even convinces a few people that the first Bob is fake. [[UpToEleven He even convinced the real Bob that he was a fake]]. Like the ''WesternAnimation/{{Gargoyles}}'' example earlier, this show averted the "switching good twin with bad twin" bit, since "second Bob"'s only claim to being real was that he looked normal while "first Bob" was Web degraded.
* ''WesternAnimation/TheRealGhostbusters'':
** The Ghostbusters had to fight ghostly evil twins, the result of their uniforms (contaminated from the battle with Gozer) coming to life.
** In a later episode, they face the People-Busters, ghostly versions of themselves from an alternate universe. The "Evil" aspect is open to discussion, however.
** Slimer has his own Evil Twin (identical except for a darker green tone) in one episode, escaped from the Netherworld.
* On ''WesternAnimation/TheRenAndStimpyShow'', Stimpy makes a formula which splits people into good and evil versions of themselves. Or in Ren's case, Indifferent Ren and Evil Ren. And his evil half takes more of the formula to become Evil Ren and Hideously Evil Ren (not that Indifferent Ren cares).
* One episode ("Alter Ego") during the ''ComicBook/SabrinaTheTeenageWitch'' segment of the late 1970's era Filmation cartoon ''The New Archie and Sabrina Hour'' featured the wickedly mischievous Damina, a raven-haired Sabrina lookalike with a shrill, grating voice. Though Hilda referred to Damina as "Sabrina's magic mirror image" and Zelda implied that Damina was Sabrina's alter ego, the girls addressed each other as "Cousin." They are also a literal example of the RedOniBlueOni trope: rowdy and rambunctious Damina wore red, and the demure and proper Sabrina wore blue.
%%* WesternAnimation/SamuraiJack vs. Mad Jack.
* One episode of ''[[Franchise/ScoobyDoo The Scooby-Doo Show]]'' featured Arlene Wilcox, whose evil twin tried to take advantage of their resemblance to have her executed as a witch. It'd have worked if not for YouMeddlingKids.
* Played with in ''WesternAnimation/{{Sealab 2021}}'', where a pair of characters gets displaced in time, and Captain Murphy is convinced they are doppelgangers.
--> '''Captain Murphy:''' Tell it to Queen Doppelpopoulis!
** Played straight with Bizarro Sealab, who fortunately were [[UpToEleven even more incompetent than normal Sealab]].
*** Don't you mean ''BIZARRO'' incompetent???
* The Mondays from ''WesternAnimation/TheSecretSaturdays''.
* On ''WesternAnimation/{{Shelldon}}'', Sheriff is a starfish and when he was split in half, one half was cared for by his friends and remained him, while the other was lost and ended up becoming a jewel thief named Spiky Riptide.
* ''WesternAnimation/SheZow'' has [=SheZap=], the unintended product of Guy throwing a discarded fingernail into a [[ILoveNuclearPower nuclear waste vat]]. Described as [[EnemyWithout his dark side]], he's the same as Guy except his outfit is black and green, his voice is higher to exemplify his instability, his version of Guy's LaserBlade is a curling iron that doubles as a HotBlade, his skin has a SicklyGreenGlow, and his motivation appears to be ForTheEvulz.
* ''WesternAnimation/TheSimpsons'':
** In the first segment of "[[Recap/TheSimpsonsS8E1TreehouseOfHorrorVII Treehouse of Horror VII]]", Bart and Lisa discover an evil twin of Bart, named Hugo, living in the attic and obsessed with "reuniting". Their parents and Dr. Hibbert admit that the boys were born {{conjoined|Twins}}, but were separated at birth and Hugo was locked away after they realized he was evil. However, it's subverted when Hibbert looks at their scars and realizes that Bart is, and always has been, the evil one ("Oh, don't look so shocked"). The segment ends with their situation reversed, Hugo being accepted into the family while Bart is locked in the attic and fed nothing but fish heads.
** Mr. Burns also fits the trope, even if the only thing known about his twin (who never appeared in the series) is that he/she died from being shot. It's heavily implied Burns was behind his twin's death (and the deaths of all their other siblings) to inherit his parents' whole fortune as he told the tales of their demises to Bart Simpson, who was masquerading as Simon Woosterfield as part of a PrinceAndPauper plot.
* An episode of ''WesternAnimation/SofiaTheFirst'' has Sofia creating a clone of herself in a pink dress to play with a visitor while she goes to a hootenanny, but the clone turns out to be this. Clover finds out that Sofia did something wrong when he takes a bite out of an apple she cloned and finds that it's rotten.
* This was effectively parodied in the ''WesternAnimation/SouthPark'' episode "Spookyfish", in which Cartman's Evil Twin was soft spoken, considerate, and generous, so Stan and Kyle try to send the "real" Cartman back to the AlternateUniverse instead.
** Another episode had Stan cloned. Despite having one arm longer than the other, a giant head, and only saying, "Me Stan, bah-chewy-chomp, bah-chewy-chomp, bah-chewy-chomp," [[HughMann everyone thought it was him when it escaped and went on a rampage.]]
* In the cartoon version of ''VideoGame/SpaceAce'', besides Hexter in the games, Dexter has a ''second'' evil clone named Baby Face Nerks, who looks like Dexter, but does not energize, and also wears a cowboy hat and wears a bandana around his neck. He appears in "Wanter Dexter!".
* The original ''WesternAnimation/SpaceGhost'' series had a straight example of this, with the evil "Space Spectre" crossing over for one episode from a parallel universe. No evil twins of Space Ghost's friends, however, since Space Spectre works alone, a fact pointed out by Space Ghost as the reason he was able to defeat Spectre.
* The ''WesternAnimation/SpaceGhostCoastToCoast'' episode "Switcheroo" (the one in season 3, not 4) introduces Space Ghost's Evil Twin brother Chad... who, of course, has a [[BeardOfEvil goatee]].
* Spider-Carnage of ''WesternAnimation/SpiderManTheAnimatedSeries'', BetaTestBaddie and WoobieDestroyerOfWorlds par excellence. "I'm more you than you'll ever admit!"
* ''WesternAnimation/StuntDawgs'' villain Richard P. Fungus and his insane twin brother R. Peter Fungus.
* ''WesternAnimation/TeenageMutantNinjaTurtles1987'': The episode "Donatello's Duplicate" has Donatello make a duplicate of himself to help with his lab work so he can have some more time to relax. Unfortunately for him, the twin is an egotistical {{Jerkass}}, who eventually sides with a gangster who wants to rule the city, so the twin builds a second duplicator to create copies of rats to swarm the city. The Turtles eventually confront the evil Donatello during the climax; he then uses the duplicator on the rest of the team to make evil duplicates of them as well.
* In ''WesternAnimation/TeenTitans'', during "The End" Trigon creates evil duplicates of Beast Boy, Cyborg, and Starfire. A battle ensues.
* ''WesternAnimation/TheTick'' has Mucus Tick, an evil clone created by inter-dimensional horror Thrakkazog from a tissue, or rather Kleenex, sample taken from The Tick when he had a cold. Mucus Tick was, appropriately, green and amorphous. The sample was taken from a clone of Arthur, which among its most telling features is that it could only say, "I Arthur." The Tick considered that a rather compelling argument when it came time to determine which one was real.
** Furthermore, Arthur seems to have an entire race of evil clones in an alien species called the Hey that coincidentally dresses exactly like him, has a language consisting entirely of the word "Hey," and literally worship nothing to the point of wanting to destroy everything.
** Hey propaganda is patently hilarious to hear, because to the human ear it sounds less like inspiring prose and more like [[JadeColoredGlasses jaded, cynical hogwash]]. "Nothing is worth living for. Nothing is worth fighting for. Nothing is beautiful." You get the idea.
** Arguably, Tick also has "Barry Tick," who is similar only in theme and they wind up fighting each other over who gets to use their name.
* ''Anime/TransformersArmada'' had a black version of Optimus Prime appear when they briefly jumped dimensions for... some reason. [[spoiler: Actually it was Sideways, but still an evil twin.]]
** In a number of canons, "Scourge" and "Nemesis Prime" are an evil, black repaint of Optimus Prime.
** A Botcon ''WesternAnimation/TransformersAnimated'' comic features the Stunticons, destructive Decepticon clones from miscellaneous Autobots (and Lockdown, who's ''already'' pretty slaggin' evil.) Toxitron, the one based on Optimus, is a pastiche of Bizarro.
* In ''WesternAnimation/TheVentureBrothers'', Dr. Venture himself can be considered the evil twin to his brother Jonas Jr., whom he consumed in the womb. While Jonas Jr. is meant to be the true heir to Jonas Sr. and is the superior scientist, Rusty is a failed scientist who has shown himself to be amoral, having created a Joy Can out of an orphan's heart and a FrankensteinsMonster out of a PunchClockVillain that his bodyguard killed as well as being generally a horrid father who seems to show mostly disdain for his own sons (though this might be related to the fact that they are shown to be TooDumbToLive at times).
** He even tries and fails to kill a successful, non bald doppelganger of himself from an alternate reality.
** Though it does seem to rattle Dr. Venture when Henry Killinger (and his magic murder bag) assumes he'd make a good supervillain/arch-nemesis for his brother. He turns it down when he realizes it, despite that his compound is so much more efficient that way.
* The titular character in ''WesternAnimation/WidgetTheWorldWatcher'' had an evil twin from another dimension, Ratchet the World Trasher.
* ''WesternAnimation/{{Wishfart}}'' parodies this in a manner similar to the ''WesternAnimation/{{Futurama}}'' example above. When a wishing accident causes AlternateUniverse versions of Dez, Puffin, and Akiko to enter their universe, Dez and his friends initially assume them to be their evil twins. However, Alternate!Puffin points out that it's pretty evil of them to make such a nasty assumption so quickly.
-->'''Dez:''' You're right. I’d say we look just as evil, if not more evil, than these evil doppelgangers.
* Not actually evil, per se, but Will and Yan Lin gain twins thanks to Nerissa during the second season of ''WesternAnimation/{{WITCH}}''. Will's fights back when she realizes that the real Will is trying to reabsorb her (due to the fact that she's a projection from the Heart of Candracar given sentience), but ends up TakingTheBullet when Nerissa attacks, willingly allowing Will to reabsorb her. Yan Lin's twin goes rogue when Nerissa threatens to take away her sentience if the twin doesn't join her. Unlike Will's twin, Yan Lin's lives on, and the real Yan Lin passes off her duplicate as her never-before-seen twin sister.
* Ranger Smith of ''WesternAnimation/YogiBear'' fame had an evil twin known as Slippery Smith. Being a fugitive for unspecified crimes (probably mostly theft) was bad enough, but forcibly swapping clothes with his brother and throwing him out to the cops was a MoralEventHorizon. Thankfully (if unsurprisingly), Slippery Smith did not appear in more than one episode.
[[/folder]]

* In ''VideoGame/MassEffect3'', the BigBad of the ''Citadel DLC'' is [[spoiler: a Cerberus-created Clone of Commander Shepard, [[IJustWantToBeSpecial jealous]] about being created simply as a WalkingTransplant for them and now hell-bent on [[KillAndReplace replacing]] the original]].

* ''Series/{{Gunsmoke}}'': In one episode, Festus is jailed on charges of murder and robbery... only someone who [[IdenticalStranger looked just like him]] was the actual criminal.
* ''Series/TheDukesOfHazzard'': Two instances, both involving the series' two main villains (one each per episode):
** The episode "Baa Baa White Sheep" introduces Boss Hogg's good twin, Abraham Lincoln Hogg (Sorrell Booke in a dual role), who is everything his brother isn't; A.L. Hogg is kind, charitable, and decent. He wears a priest's black outfit and a black stovepipe hat, and drives a black car, in contrast to his brother's white duds and white vehicle. The twins' parents must have foreseen how their sons would have turned out; astute viewers will recognize that the twins are named after Abraham Lincoln and Jefferson Davis, the Presidents of the Union and the Confederacy, respectively, during the American Civil War.
** In "Too Many Roscoes," the real Roscoe is kidnapped by a band of bank robbers while the ringleader -- an impersonator named Woody (James Best in a dual role) -- takes to the streets assuming Roscoe's identity... all to help his two criminal associates gain control of an armored truck delivering a $1 million shipment to Hazzard Bank. (Incidentally, the main characters fail to call Woody on his fake identity when "Roscoe" bungles simple facts about his friends but remembers facts about the expected bank shipment in exact detail.)
* In ''Series/IDreamOfJeannie''. Jeannie's sister (also named Jeannie, also played by Barbara Eden, but with a brunette wig) was not truly her twin, but could easily pass for her sister and was clearly evil, trying many times to steal Tony for herself. Jeannie's sister wore a green version of Jeannie's pink harem girl outfit, but with a skirt rather than pantaloons.

* ''SabrinaTheTeenageWitch'':
** ''Every'' member of the Spellman family is one of a set of twins, and one of each set is ''always'' evil. In Sabrina's case, her twin is Katrina. Naturally, Sabrina is the good one, and the family has a SecretTestOfCharacter for discovering which is which: after making a seemingly final judgement based on their past good and evil deeds, both sisters are brought to a volcano, where the emcee tells the good one to cast the evil one into it, knowing only the evil one would actually do it; Katrina fails miserably by doing this without hesitation. The Other Realm even has a prison specifically for witches like this (in the "Twin Cities"), although Katrina escapes from it in one episode and in another, is able to strike at Sabrina while still there.
** Aunt Zelda's evil twin is worse. [[NamesToRunAwayFromReallyFast Jezebelda]] claims to have created the Bubonic Plague; but while clearly wicked, she isn't as smart as Katrina.
* In one subplot of ''Series/{{Soap}}'', Burt is kidnapped by space aliens, one of who is transformed into an exact duplicate of him, who's not so much evil as horny for Burt's wife. Burt gets the aliens to return him to Earth, leading to [[https://www.youtube.com/watch?v=8laJD6yZS8w this touching yet funny scene of Richard Mulligan acting with himself]].
* ''Series/TheTwilightZone1959'': "Mirror Image" has the protagonists haunted by apparent malevolent doubles. Somewhat averted, as the seeming evil doubles do little more than watch their counterparts, sometimes smiling darkly.

* ''Series/TheVampireDiaries'':
** The series plays pretty heavily on this trope, as Elena learns that her identical-appearing ancestor Katerina Petrova is [[spoiler: alive and regularly killing people as a vampire named "Katherine"]], and both are part of a supernatural heritage of reincarnated {{Doppelganger}}s. Over the entire show, lead actress Creator/NinaDobrev plays three versions of the Petrova Doppelgangers -- all of whom eventually make out with fan favorite [[spoiler: Elijah]]!
** In the Season Four episode "American Gothic", ImpersonatingTheEvilTwin is done to entertaining effect as [[spoiler: Nina Dobrev plays No-Humanity-Emotionless Elena sitting across from Katherine in a lunch booth and does a workable impression of her own acting, but she needs to try a few times to capture "just the right level of contempt and hidden insecurity."]]
** Silas to Stefan. Stefan is the doppelganger of Silas. Therefore, Silas is the EvilCounterpart to Stefan, who is the GoodCounterpart.
* The Channel Four comedy-drama ''Series/ShamelessUK'' had the Good Twin variety: homophobic villain Paddy Maguire turns out to have a homosexual and non-villainous twin brother.
* ''Series/LoisAndClark'' had Lois' evil twin, who was a clone. And Superman's misguided-and-sees-Lex-as-his-father twin, who was also a clone.

* Data has an evil twin, Lore (a psychotic and sadistic version of Data), in ''Series/StarTrekTheNextGeneration'', and a "stupid twin", B4, in ''Star Trek: Nemesis''.
** William Riker has one, thanks to a [[PhlebotinumBreakdown transporter malfunction]], who at first is just missing some social niceties after being stranded on a planet alone for the better part of a decade.
** And then "Thomas" Riker shows up in ''[[Series/StarTrekDeepSpaceNine Deep Space Nine]]'', impersonates his brother, and steals the ''Defiant'' for a mission with the Maquis, making him at least seriously misguided. (He's right about the hidden Cardassian fleet, however.)
** In ''Series/StarTrekVoyager'', the Emergency Medical Hologram on the EvilCounterpart ship U.S.S. ''Equinox'' has had his "ethical subroutines" removed, making him an Evil Twin of the Doctor on ''Voyager''.
** Lots of evil twins in the MirrorUniverse, of course, but [[Series/StarTrekDeepSpaceNine Intendent Kira Nerys]] deserves special mention for being the only one who's actually met her counterpart. And got [[ScrewYourself the hots for her]].
** Spock's "evil twin" is terrifyingly cold and ruthless; however, apart from the beard, he actually is identical to his regular universe counterpart, and is simply behaving logically for someone living in an evil empire. When he realizes what's happening, he helps Kirk return to his original universe so he can get his (evil) captain back. Kirk is even able to persuade him to rebel from the empire on moral grounds.
** In the original show, Spock detects mirror-Kirk almost immediately and confines him, whereas Kirk is able to blend in without arousing suspicion. Spock later speculates that a civilized man can masquerade as a barbarian by simply reverting, but that a barbarian has no core of civilization to draw on.
** As well as having a double in the Mirror Universe, Kirk also had an android duplicate (''What Are Little Girls Made Of?'') and an evil double created by a transporter accident (''The Enemy Within''). The transporter double was an interesting case, as it actually split Kirk into a "Good" ''and'' "Evil" version of himself. The good Kirk lacked the strength of purpose to command, while the evil Kirk, while violent, ultimately lacked the moral courage to face the situation. While hating each other, both finally realize they need each other to survive.
** In the expanded universe novels by Creator/WilliamShatner, Kirk (who was revived after his on-screen death in ''Film/StarTrekGenerations'') finally gets to meet his MirrorUniverse version, who likes to call himself Tiberius and who was, for a time, TheEmperor (until Spock led a coup) before being instrumental in getting the Klingons and the Cardassians to ally. By the end of the trilogy, he has mellowed out, though, and becomes more like Kirk.
* Similarly, ''Series/FantasyIsland'' once revealed that Mr. Roarke and Tattoo had their own evil (non-identical) twins, who wore black suits with white ties, and had British Accents. Perhaps ironically, the 1998 reboot of ''Fantasy Island'' starred British actor Malcolm [=McDowell=], complete with a black suit, as Mr. Roarke. In a separate episode of the original series called "Look Alikes", a guest (Ken Berry) wishes to meet and exchange places with his (non related) twin (Ken Berry) who he has never met, and who of course turns out to be wanted by some bad guys.
* The 1970s science fiction parody series ''Series/{{Quark}}'' also hit this trope in an episode called "The Good, The Bad, and the Ficus". [[TheSpock Spock-like]] Ficus, being a plant, had no morality to invert when the crew of the ship was duplicated.
* ''Series/PrettyLittleLiars'' outright abused this along with IdenticalStranger, with the reveals of Uber -- A [[spoiler: Mary Drake]], Spencer's mother [[spoiler: and killer of her own twin sister, Jessica Drake]] and AD [[spoiler: Spencer's twin sister, '''A'''lex '''D'''rake]].
* ''Series/SaturdayNightLive'':
** "Frankenstein, Tonto, and Tarzan" sketch, Frankenstein is kidnapped and replaced by his evil brother. The big joke of that was Frankenstein was played by Phil Hartman and was inarticulate while his evil twin was played by Mel Gibson could speak proper English and Tonto and Tarzan still couldn't tell them apart.
** This trope is parodied in another ''Saturday Night Live'' skit one which is titled "Jay's Evil Twin," in it... Leno uses a fake moustache to determine if his date (Joan Cusack) will put out -- his evil twin Wade.
--->'''Jay's Evil Twin''': What's the matter, baby? Still got your clothes on? ''[releases an evil laugh as he shakes the beer can]''\\
'''Kate''': Oh, uh.. I don't want that beer.. I.. no, thank you, Jay.\\
'''Jay's Evil Twin''': ''[releases an evil laugh]'' Wet t-shirt contest, baby? ''[pulls the tab on the beer can, gushing beer all over Kate's clothes]''\\
'''Kate''': Why! You're not Jay! You're Wade, his evil twin!\\
'''Jay's Evil Twin''': ''[releases an evil laugh]'' Jay -- that little weasel! That sniveling druid! What kind of a man would read ''Our Bodies Ourselves''? I've got my own version of that book, baby -- it's called ''Your Body Myself!'' ''[releases an evil laugh]''\\
'''Kate''': Ohhh, that's evil! You're an evil, evil man! ''[runs quickly out of the apartment]''\\
'''Jay Leno''': ''[releases an evil laugh, as he peels the fake moustache off his upper lip]'' You know.. I had a hunch that dame wasn't going to come across on the first date. You know, this evil twin thing works every time -- I could have blown three hours and who knows how much dough on that girl. But, anyway.. ''[checks his watch]'' My God, it's still early... I can still go to Hef's place, maybe meet somebody else there. See you later. ''[releases evil laugh as he exits the apartment]''
** The soap opera parody "The Young and The Youthful" plays with this trope by having Creator/AlecBaldwin portray both the handsome and wealthy Pierce Talbott and his mentally challenged evil twin Petey, who takes his place. Much of the humor comes from the other characters' apparent inability to immediately recognize that Petey has taken Pierce's place.
--->'''Delaney''': Pierce Talbott has been acting strange lately. He cancelled all his meetings, then he locked himself in his office and watched cartoons all day long.\\
'''Shane''': That doesn't sound like Pierce Talbott...\\
'''Delaney:''' Watched and sang along...\\
'''Shane''': That doesn't sound like Pierce Talbott at all...
* ''Series/TheSecretWorldOfAlexMack'' has Alex accidentally come into contact with a compound called "GC Divide" which splits her puddle form into two people with distinct personalities, one being the regular Alex, and the other being her repressed bad-girl side that tries to eliminate her good half on two separate occasions, as well as just being unpleasant to everyone around her.

* In a ''Series/WizardsOfWaverlyPlace'' episode, Alex gets her replica out of a picture, using a special machine. Their lines suggests that Alex is actually [[{{Jerkass}} the]] [[ManipulativeBastard bad]] [[MagnificentBastard one]] of the two:
-->'''Alex:''' Goodness. I do look good in that dress. (she turns around) Baby Rockford, put that dress on, we got a fashion show to save.
-->'''Alex's replica:''' No! I like this dress...
-->'''Alex (''turns to her replica''):''' Alex, can I talk to you over there for a second?
-->'''Alex's replica:''' Sure! (''she walks away'')
-->''Alex grabs a heavy object from a shelf, then follows her, with a dark scowl on her face.''
* ''Series/{{Sliders}}'':
** The series featured numerous evil twins, including one case where there is a NoEnding in which one of the regulars may have been permanently replaced by his twin.
** For a while, there was an online game about the series involving the PlayerCharacter as a new slider who has to figure out which of the four other members (Quinn, Colin, Maggie, and Rembrandt) has been replaced by an Evil Twin before they have to slide. Basically, it's a trivia game where you ask each character questions about past adventures (i.e. episodes) and try to spot inconsistencies. The game is not randomized, so [[spoiler:the impostor is always Colin]]. The inconsistency involves [[spoiler:the episode where Colin and Maggie were drugged to live a happy life together. The impostor claims that he hated every minute of it. In fact, the real Colin, being pumped full of drugs, loved it]].
* ''Series/StargateSG1'':
** Samantha Carter had an evil replicator version of herself, Replicator Carter (Replicarter) who nearly takes over the entire galaxy.
** In the Alternate Universe of "Point Of View", Apophis has a goatee, a la Spock, but everyone is morally the same, except maybe Teal'c (our Teal'c didn't give him a chance to talk before offing him).
** And then there's the Alternate Universe SG-1 that tries to steal the Daedalus in "Ripple Effect".
** Subverted slightly by Col. Mitchell who points out to the alternate Mitchell that "You don't have a [[BeardOfEvil goatee]], so you aren't from the [[MirrorUniverse evil twin universe]]"
* Alton Brown's evil twin, B.A., is a recurring character on ''Series/GoodEats'', usually to provide contrast as Alton and B.A. make sweet and spicy varieties of the same dish. Despite the fact that B.A. is "evil", and has been in and out of jail numerous times, Alton and B.A. seem to get along relatively well. Of course, this might be because B.A.'s also TheVoiceless, and Alton provides the running commentary on anything B.A. makes.
* ''Series/{{Smallville}}'' had a couple of Evil Twin variants.
** Bizarro Clark, of course, whose distinguishing characteristic was that he'd wear the opposite jacket/shirt combo (red jacket/blue shirt if Clark's got a blue jacket/red shirt, etc.) and [[IdiotPlot no one noticed.]] Also, in the episode "Onyx", ComicBook/LexLuthor is split into a Good Lex and a Crazy/Evil Lex.
** There's also Clark Luthor/Ultraman, an AlternateUniverse version of Clark who was raised by Lionel Luthor. To say he's an utter [[TheSociopath psychopath]] would be an understatement. Lois, Tess, and Oliver all immediately realize that this isn't their Clark and proceed to deal with him accordingly.
*** Technically the Earth-2 Lionel is this to E-1 Lionel. E-1 Lionel died while on the [[HeelFaceRevolvingDoor Face]] side, and while he's not exactly [[MagnificentBastard a nice guy]], he's still ''far'' from TheSocialDarwinist AxCrazy E-2 Lionel.
* ''Series/SoWeird'': "Pen Pal": Random supernatural occurrences cause Annie to come face-to-face with a parallel universe counterpart who has fallen in with a bad crowd, and thereby turned "evil." (Well, goth and rebellious. This being a Disney show, that's about as evil as a character could get.)
* ''Series/{{Popular}}'' had Bobbi and Jessie Glass working at Kennedy High (as well as their brother Rock). Bobbi and Rock were notoriously mean and unpleasant, while Jessie the nurse seemed a bit nicer, comparatively speaking. And yet, in the first season finale, Jessie plotted to kill her twin and frame all of Bobbi's sophomore biology class for the murder. Who's the mean one now?
* ''Series/TheTonightShowWithJayLeno'' in the 90's had Jay playing different characters such as Iron Jay and Beyondo. The character of his that fits right in this trope is Evil Jay who appears at every full moon. Years before that, Jay Leno satirized the entire 'evil twin' trope when a guest on ''Series/TheTonightShowStarringJohnnyCarson''. Leno had a marked-up ''TV Guide'' and showed what seemed like a dozen 'evil twin' themed shows for that one week. There was one on ''Hawaii Five-O''. The bit wrapped with ''Series/Dynasty1981'', which had Crystal replaced with her 'scheming lookalike', with Jay shouting, "Scheming lookalike? Scheming lookalike? It's an '''EVIL TWIN'''!". This trope is so endemic in television that perhaps we should be asking which shows never did it.
* A two-part episode of ''Series/TheIncredibleHulk1977'' introduced viewers to another Hulk, created by a similar process to the one that transformed David Banner -- but even more wild than the one we know, and actively malevolent and murderous.
* ''Series/OutOfThisWorld1987'': Evie splits herself in order to attend a party while also writing a speech about the evils of school uniforms (specifically, bright yellow dresses with blue baseball caps, and breeches for the boys). Unsurprisingly, the process results in a serious Evie and a reckless Evie. The serious Evie is portrayed as the "real" one, at least until Serious-Evie tries to give her speech and discovers that she's now ''in favor'' of the dress code. Troy attributes their eventual recombination to ThePowerOfLove, which is kind of {{Squick}}worthy if you think too hard about it.
* Stick Stickly, the stick puppet host of Nickelodeon's ''Nick in the Afternoon'', had a diabolical lookalike, Evil Stick, who once tried to take over the summer programming block.
* Subverted in ''Series/{{Farscape}}'''s third season, where a second John Crichton is created... yet is absolutely the same as the first Crichton. However, it was essentially played straight in the episode "My Three Crichtons," which featured John being duplicated into [[spoiler: a caveman and a future-brain-man-thing]]. Strangely enough, only ''one'' was actually evil.

* ''Series/{{Friends}}'':
** Phoebe's twin sister, Ursula, is by all accounts a bad person: she's an awful waitress, nearly cons a man into marrying her, sold Phoebe's birth certificate to a stranger, becomes a porn star using Phoebe's name, and generally has no affection for Phoebe. She also didn't tell Phoebe that their mother had left a [[GoodbyeCruelWorld suicide note]], and tried to improvise one on the spot when Phoebe asked to see it.
** Parodied in another episode, when Joey was dating someone who honestly believed he was the character he played on TV, Dr. Drake Ramore. When she sees him in person while the show plays on the TV in the background, she becomes confused. Joey tells her the truth but she doesn't understand, so Ross tells her that he is actually Hans Ramore, Drake's evil twin.
* Each of the main characters in ''Series/HowIMetYourMother'' has a [[IdenticalStranger doppelganger]]. Lily's duplicate Jasmine is a clear Evil Twin who robs Barney, Ted, and Robin. However, Barney's doppelganger, Dr John Stangel, is a mature and well-respected fertility doctor who is visibly unamused by his duplicate's antics, making ''Barney'' the Evil Twin.
* The final ''Series/SpaceCases'' episode to air, "Trouble With Doubles":
-->'''Commander Goddard''': We have an Evil Twin situation.
* ''Series/ThirdRockFromTheSun'' had Dick temporarily replaced as high commander by another alien who takes on the same human form and identity. This replacement (called simply "New Dick") is not only an evil [[TakeOverTheWorld megalomaniac]], he is also "extremely unpleasant." Even more than the original.
* ''Series/{{Alias}}'' gives us this trope via Project Helix. Two major characters (Francie and later Sydney) had evil versions, and several minor characters as well.
* In the 2002 revival of ''Series/TheBasilBrushShow'' there's Basil's cousin Mortimer who is a criminal mastermind.
* ''Series/{{Heroes}}'' has begun this trope as an "evil" character [[spoiler: Sylar]] gained shapeshifting abilities and has begun taking on the roles of a "good" character [[spoiler: Nathan Petrelli]]. (Though their good and evil roles seem to change episode by episode.)
* ''Series/DoctorWho'':
** In the classic series adventure "Inferno," the Third Doctor is sent into an AlternateUniverse where he encounters evil-fascist-twin versions of his friends in UNIT -- the evil Brigadier has in fact ''lost'' his facial hair, but gained an eyepatch in response. Bizarro Liz is a brunette instead of a redhead. Curiously enough, there's no evil version of the Doctor himself (although the ExpandedUniverse novels did suggest that the evil tyrant ruling this fascist alternative Britain was in fact an alternative version of the Third Doctor with a different body who went evil after his forced regeneration by the Time Lords).
** In "The Chase" the Daleks create an android First Doctor as part of their plan to kill the TARDIS crew. Slightly spoiled by the fact the actor doesn't look entirely like William Hartnell. Happens later in "The Android Invasion" an android duplicate is created of the Doctor and many other characters.
** Evil dictator, Salamander, from The Enemy of the World is an evil twin for The Second Doctor. However, since The Doctor has A LOT of specialized knowledge, including the operation of the TARDIS, he was easy to uncover when he tried to impersonate him.
* Kosh and Ulkesh ([[AllThereInTheScript Kosh II]]) in ''Series/BabylonFive'' sort of had this dynamic, although as far as we know they aren't siblings.
* In the 1990s ''Series/{{Zorro|1990}}'' series, Don Diego has an evil (though not identical) twin. Also, the evil Alcalde is at one point replaced by his identical twin, who raises the suspicion of the other characters by being somewhat less evil than the real Alcalde.
* ''Series/ICarly'' in the episode ''iTwins''. Essentially, the main character Sam is the ''evil'' twin, and Melanie is the ''good'' twin.
** This is continued in the ''Series/SamAndCat'' episode "#Twinfection", but somewhat inverted. As a trick, Sam convinces Cat that she had the title infection and had an evil twin. Sam tells Melanie to be ten times as bad as Sam usually is.
* In ''Series/{{Lidsville}}'' the villain Hoodoo had a good twin, Bruce, the WhiteSheep of the family.
* ''Series/WKRPInCincinnati'' did it with Venus Flytrap being suspected of crimes that were committed by a pimp-dressed Evil Twin complete with the obligatory goatee.

* ''Series/{{Supernatural}}'' has had three shapeshifter episodes:
** "Skin", "Nightshifter", and "Monster Movie". The latter two don't really use this trope, but "Skin" prominently features a shapeshifter who becomes an Evil Twin of Dean.
** Then there's the ''actual'' evil twin in "Simon Said." Sam and Dean are investigating a case where someone is using mind control to make people commit suicide. They find a guy named Andy who has mind control powers, but it turns out that the one who's actually making people off themselves is his long-lost twin brother, who has the same powers. Andy's response when he finds out? [[LampshadeHanging "I have an evil twin."]]
* The Evil Twin is a common trope for Brazilian soap operas to this day.
* ''Series/GeneralHospital'' once had an interesting take on this. There was once a character named Grant Putnam who was revealed to TheMole for the Soviet Union. ThePowerOfLove redeems him and after helping to dispense with his comrades, continues his life. Eventually the NotQuiteDead real Grant Putnam recovers from amnesia. At first it seems he's evil due to the trauma of nearly dying and spending years in an asylum, but it's revealed that he was EvilAllAlong and had originally murdered his brother in order to have his brother's fiancée, who's now married to the Russian.

* Another well-known American soap opera example is Andre [=DiMera=] from ''Series/DaysOfOurLives.'' Andre was given plastic surgery to make him look like his cousin Tony at the contrivance of the man Tony grew up believing was his father, crime lord/practical supervillain Stefano [=DiMera=]. At Stefano's behest and while Tony was kept secretly imprisoned, Andre while impersonating Tony became a serial killer just to frame an enemy of Stefano's, although Stefano ended up betraying him once Andre's killing spree included Stefano's own daughter (although that didn't stop Stefano many years later getting Andre to pretend to be Tony ''again''!).
* The short lived TV series ''Series/{{Two}}'' was based on this concept. A man is WronglyAccused of a murder committed by his SeparatedAtBirth twin brother and goes on the run to ClearMyName.
* Of course we can't forget ''Series/ArrestedDevelopment'' featuring the Evil Twin as a major plot point where George consistently traded places with his luxuriously hirsute good twin Oscar. Dot com.
** One such incident reveals that multiple people arrested by the police try to play the "You've got the wrong twin" card, with no success.
* On ''Series/{{Fringe}}'', all of the characters have specific counterparts in the AlternateUniverse. Whether or not they're evil is up to debate.
** Interestingly, there is one prominent alternate universe character who did not have a counterpart in "our" universe for the longest time. Finally, a "good" version (who looks a little nerdy in glasses) shows up... for a single episode. He returns as a regular in the following season.
** In a more straight version of this trope, there's a season 4 episode where the Fringe Divisions from both universes are working together to catch a serial killer in the alt-universe, with the help of his counterpart from the prime-universe, who thanks to a woman he met in his childhood, becomes able to contain his psychotic urges and avoid the crime path, such luck his alternate did not have.

* In Chinese TV series 神医大道 (English title: "God Of Medicine") a maid-servant is magically transformed into the princess' evil twin. Then the princess is transformed into a duplicate of the maid, becoming her ''good'' twin. It's almost a GrandTheftMe, except that the changes happen separately.
* In ''Series/DarkOracle'' the major antagonists, Blaze and Violet fall somewhere between this and EvilCounterpart. [[NoNameGiven Evil Sage]] (Season 2, Episode 3, "Through A Glass Darkly") on the other hand, plays this absolutely straight, being the DarkWorld twin of Lance's girlfriend, Sage, and her complete opposite in terms of personality. Whereas real-world Sage is a geekily-cute girl, with low self-esteem and very odd taste in--well pretty much everything--her comic book counterpart is a vindictive bitch with creepy heterochromia, [[TattooedCrook evil tattoos]], and a plethora of KickTheDog moments. She's hyper-aggressive to Sage's shyness, enjoys playing mind games with Lance, and looses a poisonous snake on a pair of girls who defaced her locker. It takes a near-death experience to bring the real Sage back.
* ''Series/{{Charmed|1998}}'' had to deal with a few evil twins.
** Paige had an evil past incarnation travel to the present who looks just like her.
** And later, in the sixth season, there was a revelation of a mirror universe where everyone who is good is evil and everyone who is evil is good. The whitelighters are darklighters and the Police Station looks more like a strip club.
* The ''Series/LawAndOrder'' episode "Brother's Keeper." The good twin is a mild-mannered citizen, while the bad one is a member of the Irish mob. [[spoiler: In a twist, it's revealed that the "good" twin committed murder, and the "evil" twin killed a witness to that murder, then took the rap himself, knowing that he'd get killed in prison. Which he did.]]
* The ''[[Series/LawAndOrderSpecialVictimsUnit SVU]]'' episode "Double Strands", where the rapist and his wrongfully-accused twin brother were played by T.R. Knight. ADA Novak understandably flips out when she's told this, citing this as the definition of reasonable doubt. The evil twin follows his blissfully ignorant and successful brother (their mother gave them up for adoption separately) around the country and rapes women, when he knows his brother doesn't have an alibi. He slips up when his brother alters his schedule one day, and then leaves a fingerprint on a screwdriver (identical twins have the same DNA but different fingerprints).
* ''Series/{{Neighbours}}'':
** Robert Robertson for his triplet Cameron, whom he [[TwinSwitch impersonated]] in a plan to kill his father, sister, and anyone else who got in his way.
** Andrea Somers was originally introduced as an IdenticalStranger for Dione Bliss, whom she impersonated in hopes of getting her parents' inheritance. They were retconned to be twins SeparatedAtBirth two years later.
%%* ''Series/TheMiddleman'' episode "The Palindrome Reversal Palindrome"
* In ''Series/FatherDowlingMysteries'', the eponymous priest had an evil twin who was a criminal and would pop in and cause trouble.
* ''Series/{{Community}}'' Season 3, Episode 4, [[Recap/CommunityS3E04RemedialChaosTheory "Remedial Chaos Theory"]], features seven alternate timelines. The Abed in Timeline 1 recognises it as the darkest timeline (Pierce is dead, Annie's crazy, Jeff lost an arm, Shirley's a drunk, Troy lost his larynx and Britta [[ArsonMurderAndJaywalking dyed a strip of her hair blue]]) and suggests the group embrace their role as evil versions of the Main Timeline group.
-->'''Troy and Abed:''' ''[[DarkReprise Evil Troy and evil Aaa-bed!]]''

* In the Fox TV movie ''Dark Reflection'' (aka, ''Natural Selection''), C. Thomas Howell plays a dual role. In one role, he is a successful computer programmer named Ben with a great house and an awesome sports car but is neglectful of his wife and son. In the other role, he is Adam, a clone of Ben who has been running around the country killing his other clones and taking over their lives. (There were seven clones altogether.) Well, Ben is last on the list. So, Adam gets a job at Ben's company, charms the wife and kid, and infiltrates Ben's life to learn all the little details he will need to accomplish his evil plan. Along the way, [[spoiler: Adam kills a private detective, who has figured it all out, and Ben's mother, who is the only one who know that Ben has a clone. He also has sex with Ben's wife, who can't tell the difference.]] In the climax, Ben and Adam fight on the roof and one kills the other. At the end, we find out that [[spoiler: Adam survived, and that he's actually a better father to Ben's son and a better husband to his wife. Neither of them know they're now living with a murderous clone who has killed the real Ben and several others.]]
* ''Series/KamenRiderFourze'' has a literal version with the [[MeaningfulName Gemini]] [[MonsterOfTheWeek Zodiarts]]. When the TransformationTrinket is used, it produces an Evil Twin of the user, which does its best to strengthen its own existence while weakening the original's. As this happens, the stronger one resembles a normal human while the weaker becomes more "fake" (such as their face becoming a solid white mask). After a set amount of time, the stronger side becomes permanent and the weaker side fades out of existence completely. [[spoiler:Unfortunately for our heroes, this is happening to Kamen Rider Club member Yuuki.]]
* ''Series/KamenRiderGhost'' also has one in the form of a doppelganger of Makoto Fukami/Kamen Rider Specter. The doppelganger wears the Ganma's military uniform and sports AxCrazy [[SlasherSmile psychotic grins]] to distinguish himself from the real one. Each time the doppelganger is [[CurbStompBattle curbstomped]] by the real Makoto, the latter [[{{Synchronization}} experiences]] pain in the aftermath of a fight. [[spoiler:By the time the series reaches its climax, this trope is taken UpToEleven when Doppelganger!Makoto gains his own Deep Specter Eyecon and starts wearing the real Makoto's [[HellbentForLeather leather outfit]] to further [[SpotTheImpostor fool]] his friends, and eventually [[BecomingTheMask sides]] with his real self in earnest.]]
* ''Series/HannahMontana'' has this with Miley's cousin Luann, who looks like her, does bad things to her, and even tricks other people at a Halloween party that she's the real Hannah just to ruin Miley's alter ego's reputation. Luckily, she only showed up in one episode.
** There's also Luann's dad, who is Robbie Ray's identical twin brother. He isn't actually evil himself, but seeing two Robbies side by side does freak out the snooty neighbor.
* ''Series/CriminalMinds'':
** In the fourth season episode "The Angelmaker", an executed serial killer appears to be back, complete with possible DNA evidence. Reid floats the idea of 'evil twin, '''eviler''' twin', but no one else buys it. And they're right, too.
** The episode "The Inspiration" ends with the revelation that the man they arrested wasn't behaving properly because he was the actual unsub's long-lost brother. Part two, "The Inspired," reveals [[spoiler: it's more a case of crazy twin, evil twin. While neither brother is an especially good guy, one's crimes are motivated by his mental illness while the other is simply a sociopath]].
* In an unusual example, ''Series/DarkAngel'' introduces the evil twin first. Ben is a disturbed serial killer; his twin brother Alec, introduced a season after Ben's death, becomes one of the main heroes of the series... even if he does [[JerkWithAHeartOfGold have his rough patches]].
* Subverted in one episode of ''Series/{{Elementary}}''. The twins in question are [[spoiler: fraternal twins, not identical, so there wasn't any impersonation of the good twin.]] Some aspects of this trope are played with, namely [[spoiler: framing/trying to kill off the good twin.]]
* The second season ''Series/MightyMorphinPowerRangers'' episode "The Return Of The Green Ranger" gives us a clone of Tommy, repowered with the Green Ranger powers and evil. He easily hands the real Tommy his rear and the resummoned Dragonzord easily trounces the Thunder Megazord. Thankfully, defeating the wizard that created him frees him from being evil, and he and Tommy go back to the past and allow the clone to live there in peace.
** In the finale of Season Two, "Blue Ranger Gone Bad," Billy gets his own evil twin.
* The TV movie ''Echo'' had Jack Wagner play an evil twin brother who kidnapped the main character and move into his life, killing his remaining relatives in the process, until at the end when the character's girlfriend confronts them both in the abandoned building, she doesn't know which one is the evil twin and ends up shooting one of them, with the audience also left wondering [[AmbiguousCloneEnding which one was killed]].
* In the ''Series/MastersOfHorror'' episode "Imprint", the disfigured prostitute reveals at the end that she has a twin "sister", a mutated abomination attached to her head as a result of her parents' inbreeding (they were brother and sister). The mutant forced her sister to do evil things like steal a valuable ring and set up another prostitute to be tortured for it.
* A recurring version in ''Series/SevenDays'', although not a twin (not even related). Galina is a patient in a Minsk mental institution and is prone to violent outbursts. Russian government officials (presumably, with permission from the Belarus authorities) take her to a secret location and turn her into a look-alike for Olga, the resident HotScientist on the show. The goal is to infiltrate the [[TimeTravel Backstep]] project and steal the secret of the [[OurTimeMachineIsDifferent Sphere]] for the Russian version of the project. After Galina is [[SheCleansUpNicely cleaned up a bit]], she becomes a dead ringer for Olga, although their personalities are ''very'' different, and people notice "Olga" acting strangely. Namely Parker, who spends many episodes unsuccessfully trying to get Olga into bed suddenly finds her trying to jump him.
** A more conventional version was also done in this series. In a season 1 two-parter, Parker is accidentally duplicated by the Sphere during a Backstep hurriedly undertaken during an [[UsefulNotes/BetaTest incomplete tech upgrade]]. At first it seems as though they're going to clash with each other because they're both the same alpha-male personality (as with the duplication of Crichton on ''Series/{{Farscape}}''), [[spoiler: but it quickly develops that the duplicate Parker is an ultranationalist sociopathic asshat for some reason]].
* On ''Series/OrphanBlack'':
** The ninth clone introduced (counting three killed before the series starts), Helena, was raised by a group of religious extremists to kill off the other clones. [[spoiler:At first, the other characters just assume, as the audience is meant to, that she's just another clone; but she's ultimately revealed to literally be Sarah's twin sister. It's ultimately subverted, however. Helena may be murderous, but she's not ''evil'' -- she's just an abused young woman who's been taught some ''very'' bad morals. Over time, she goes through a HeelFaceTurn.]]
** Rachel — clone number ten — may be a very dark grey as opposed to pure black, but also fits into this trope.
* On ''Series/{{CSI}}'' the Gig Harbor Killer, a serial killer from Seattle who kidnapped DB's granddaughter, is revealed to have a highly successful long-lost twin (they were adopted into different families). Successful-twin sincerely believes his brother is innocent and claims he didn't know of him until he was caught but having met them both DB's pretty sure [[EvilAllAlong they were already partners back in Seattle]].
* In the ''Series/{{Monk}}'' episode "Mr. Monk and the Bully", the {{villain of the week}} turns out to be a woman's {{long lost| relative}} evil twin sister, who attempts to [[KillAndReplace murder and impersonate her]].
* Gwen, Fiona Brake’s identical sister in ''Series/NightAndDay'', isn't ''outright'' evil; but she's certainly an antagonist, who swiftly makes a beeline for Fiona’s husband Mike.
* ''Series/{{Sherlock}}'' uses this as a DiscussedTrope in "The Abominable Bride," where it's PlayedForLaughs. Said bride has apparently come back to life to murder someone ''after'' witnesses saw her blowing her own brains out. Watson suggests that she might have a twin sister who committed the murder. This is dismissed by Sherlock with irritation; her only relative was a brother who died years before. Watson then suggests that she might have a ''secret'' twin!
-->'''Watson:''' Hmm, you know? A twin that nobody knows about? This whole thing could have been planned.
-->'''Holmes:''' Since the moment of conception? [[SarcasmMode How breathtakingly prescient of her!]] ''It is never twins'', Watson.
* Series/{{Arrowverse}}:
** Earth-2, introduced in the second season of ''[[Series/TheFlash2014 The Flash]]'', has several EvilCounterpart of Earth-1 characters, including Linda Park / Dr. Light, David Singh, Ronnie Raymond / Firestorm, Caitlin Snow / Killer Frost, Cisco Ramon / Reverb, Dante Ramon / Rupture, Laurel Lance / Black Siren, Tommy Merlyn (who in this universe is the Dark Archer), Dinah Drake, and Rene Ramirez. There are also inversions: criminals from Earth-1 have heroic or neutral-aligned versions in Earth-2. These include Harrison Wells (whose counterpart in Earth-1 is DeadAllAlong, his identity having been taken by Eobard Thawne), Floyd Lawton / Deadshot, Henry Hewitt / Tokamak, Malcolm Merlyn, and Adrian Chase (instead of Prometheus, he goes by the Earth-1 Oliver's old alias the Hood and later takes the mantle of Green Arrow).
** ''Series/CrisisOnEarthX'' crossover introduces Earth-X, a universe where the Nazis won World War II. The current Führer is Oliver Queen / Dark Arrow, his wife is Kara Danvers / Overgirl, his top lieutenant is Tommy Merlyn / Prometheus, and his other enforcers are Quentin Lance / Sturmbannführer and his daughter Laurel / Siren-X. As with Earth-2, there are exceptions: Leonard Snart is morally ambiguous in Earth-1, but his counterpart in Earth-X is a clearly heroic character.
** In Season 5 of ''Series/{{Arrow}}'', Felicity actually namedrops this trope while trying to figure out Black Siren's true identity.
* Parodied in one episode of ''Even Stevens'', where Louis meets a lookalike with a similar name from a different school, who starts playing pranks on everyone and gets him blamed for it. Louis isn't really upset about that, but rather about the fact that the pranks being pulled are so amateurish and sloppy as to [[VillainCred ruin his reputation as a prankster]].
* ''Series/JaneTheVirgin'':
** Frequently discussed by the characters and the narrator as a well-worn telenovela trope. Rogelio considers it an old cliché.
** Petra is revealed to have a twin sister, Anezka. While she posits as the nicer, more eccentric, mousier sister to the cold and unfriendly Petra, she's later revealed to be scheming to get Petra out of the picture and take over her life.
* ''Series/PlanetAjay'''s BigBad, Badjay, is the troublemaking twin brother of the show's main character, Ajay.
* Clearly playing with this trope was the German science TV "Quarks & Co." when it introduced the [[ActingForTwo "twin"]] (who wore the typical [[BeardOfEvil goatee]]) of the moderator Ralph Caspers. He wasn't evil, though. [[CannonFodder And was merely introduced to end in a black hole.]] Frank, we hardly knew ye.
* ''Series/StarCops'': In "A Double Life", Albi is an evil clone of the famous pianist James Bannerman.
* Discussed on ''Series/{{QI}}'': Creator/StephenFry asks how to determine which of identical twins committed a crime if you have eyewitness accounts, fingerprints, and DNA evidence[[note]]The answer is the fingerprints, which though very similar are ''not'' identical[[/note]]. Creator/JimmyCarr responds "they're twins -- it's the evil one!"
* ''Series/{{Himmelsdalen}}'': Siri turns out to be a very dangerous, manipulative sociopath who murdered a mother and daughter, then switches places with Helena, her normal twin, so she can escape a mental institution. Even as a child, Siri stole her toys out of spite, hiding them from Helena, and killed her dog (to Helena's only much later realization).

The evil twin may attempt to convince their good twin that they're NotSoDifferent, saying WeCanRuleTogether and that the good twin's friends are holding them back from greatness. This often ends with a MirrorMatch as neither one will be able to convince the other of their ideology. After the fight, their allies will usually need to SpotTheImposter to figure out who won.

** ''Every'' member of the Spellman family is one of a set of twins, and one of each set is ''always'' evil. In Sabrina's case, her twin is Katrina. Naturally, Sabrina is the good one, and the family has a SecretTestOfCharacter for discovering which is which: after making a seemingly final judgement on based on their past good and evil deeds, both sisters are brought to a volcano, where the emcee tells the good one to cast the evil one into it, knowing only the evil one would actually do it; Katrina fails miserably by doing this without hesitation. The Other Realm even has a prison specifically for witches like this (in the "Twin Cities"), although Katrina escapes from it in one episode and in another, is able to strike at Sabrina while still there.

* ''Literature/TheCatWhoSeries'': The existence of an evil twin turns out to be a plot point in resolving the murder in one book. [[spoiler: Everyone thinks that mild-mannered David is mourning the recent murders of his twin brother Harley and sister-in-law Jill, and that the tragedy is what caused the twins' mother to have a stroke. It's eventually revealed that Harley was having an affair with David's wife, and they cooked up a scheme in which Harley killed both David and Jill and took David's place. The mother's stroke happened when ''she figured it out''.]] It's especially jarring because prior to all of this, no one had any suspicions about either twin.

This trope is PlayedForLaughs when '''both''' twins are evil, or when a character on the side of the good guys has a ''good'' twin show up, implying that the [[TokenEvilTeammate original is the evil one]]. SubTrope of AlwaysIdenticalTwins (siblings are {{Doppelganger}}s), EvilCounterpart (any evil {{Foil}} to a character), and EvilDoppelganger (someone who is both a {{Doppelganger}} and EvilCounterpart). SisterTrope to EvilKnockoff (intentionally created evil duplicate), CainAndAbel (one half of a pair of non-twin siblings is good, the other evil) and CriminalDoppelganger (evil IdenticalStranger). SuperTrope to EvilBrunetteTwin, where the AlwaysIdenticalTwins have different hair colours (and [[DarkIsEvil the darker one is evil]]).

This trope is PlayedForLaughs when '''both''' twins are evil, or when a character on the side of the good guys has a ''good'' twin show up, implying that the [[TokenEvilTeammate original is the evil one]]. SubTrope of AlwaysIdenticalTwins (siblings are {{Doppelganger}}s), EvilCounterpart (any evil {{Foil}} to a character), and EvilDoppelganger (someone who is both a {{Doppelganger}} and EvilCounterpart). SisterTrope to EvilKnockoff (intentionally created evil duplicate) and CriminalDoppelganger (evil IdenticalStranger). SuperTrope to EvilBrunetteTwin, where the AlwaysIdenticalTwins have different hair colours (and [[DarkIsEvil the darker one is evil]]).

* OlderThanPrint: The "false Guenevere" in the legends of KingArthur, who is the true Guenevere's identical ''half''-sister (somehow), and plots to take her sister's place as queen.

** Phoebe's twin sister, Ursula, is by all accounts a bad person: she's an awful waitress, nearly cons a man into marrying her, sold Phoebe's birth certificate to a stranger, becomes a porn star using Phoebe's name, and generally has no affection for Phoebe. She also didn't tell Phoebe that their mother had left a [[GoodbyeCruelWorld suicide note]], and tried to improvise one on the spot before admitting she'd ''thrown it away''.

** ''Every'' member of the Spellman family is one of a set of twins, and one of each set is ''always'' evil. In Sabrina's case, her twin is Katrina. Naturally, Sabrina is the good one, and the family has a SecretTestOfCharacter for discovering which is which: after making a judgement on based on their past good and evil deeds, both sisters are brought to a volcano, where the emcee tells the good one to cast the evil one into it, knowing only the evil one would actually do it; Katrina fails miserably by doing this without hesitation. The Other Realm even has a prison specifically for witches like this (in the "Twin Cities"), although Katrina escapes from it in one episode and in another, is able to strike at Sabrina while still there.

** ''Every'' member of the Spellman family is one of a set of twins, and one of each set is ''always'' evil. In Sabrina's case, her twin is Katrina. Naturally, Sabrina is the good one, and the family has a SecretTestOfCharacter for discovering which is which: after making a judgement on which is which based on their past good and evil deeds, both sisters are brought to a volcano, where the emcee tells the good one to cast the evil one into it, knowing only the evil one would actually do it; Katrina fails miserably by doing this without hesitation. The Other Realm even has a prison specifically for witches like this (in the "Twin Cities"), although Katrina escapes from it in one episode and in another, is able to strike at Sabrina while still there.

* Played with in ''Series/{{Battlestar Galactica|2003}}''. Boomer and Athena are a pair of Sharons/Eights who are set up as ForWantOfANail equivalents. Initially, Boomer seems to be more moral and Athena inclines towards the Dark Side, but both sway in both directions in the course of the series. By the end, Boomer has spent more time doing bad things (some of them very bad) whilst Athena is the nobler twin.

** ''Every'' member of the Spellman family is one of a set of twins, and one of each set is ''always'' evil. In Sabrina's case, her twin is Katrina. Naturally, Sabrina is the good one, and the family has a SecretTestOfCharacter for discovering which is which. (Both sisters are brought to a volcano, where the emcee tells the good one to cast the evil one into it, knowing only the evil one would actually do it; Katrina fails miserably by doing this without hesitation.) The Other Realm even has a prison specifically for witches like this (in the "Twin Cities"), although Katrina escapes from it in one episode and in another, is able to strike at Sabrina while still there.

* One of ''VideoGame/FinalFantasyXII's'' plot twists was that [[spoiler:Basch, a leading soldier in the home nation's army, was framed by his evil twin brother in the murder of the king, resulting in Basch's imprisonment and nationwide condemnation.]]
** He does [[spoiler: [[HeelFaceTurn become a little less evil]] [[RedemptionEqualsDeath right around the endgame, though.]]]]
* The Manikins of ''VideoGame/DissidiaFinalFantasy'', living (though not sentient) crystal lifeforms that can take on the form of anyone who gets too close might count.

** It is even more subverted if you realize that Veronica isn't that evil - her problem is that she has a very twisted sense of morality. Not entirely her fault since she was created to be an assassin bodyguard in the first place.

* In the manga adaptation to ''Anime/MobileFighterGGundam'', we're introduced to the Shading Gundam, an ebon-colored Shining Gundam controlled by an AI. The plan was to have the Mobile Fighter defeat Domon and force him to become its "pilot" (he'd be stuck in it - the AI would do all the fighting) after he ended up nailing four draws in a row. Domon ended up defeating the unit by unleashing his SuperMode on it.

* ''Manga/OnePiece'' introduces a an evil set of not twins, but ''fraternal quadruplets''. [[spoiler:Vinsmokes Ichiji, Niji, and Yonji, the older and younger brothers of Sanji of the Straw Hat Pirates, respectively, are ''nothing'' like him - while they do share his cool head, his [[HandsomeLech perverted tendencies]], and his [[HotBlooded temper]], they have none of his compassion and care for no one but themselves. As children, they viciously bullied Sanji for continuously displaying compassion and for being a weak waste of space, something that their [[AbusiveParents father]], [[BloodKnight Judge]], condoned. It's later revealed that all of the Vinsmoke quadruplets, including Sanji, were physically and psychologically altered by Judge in utero in an attempt to turn them into the perfect {{Super Soldier}}s, but their mother, Sora, secretly intervened by taking a drug that reversed gene-altering surgeries so she can protect their humanity. Only Sanji was successfully saved, while his brothers only have but a tiny shred of humanity left. They can't understand why Sanji continues to act kind to others, because they were programmed that way.]]

* ''Manga/{{Saiyuki}}'': Evil twins of the Sanzo-ikkou were created by a demon who rationalized that the best chance of beating them was pitting them against themselves. This promptly turns into comedy when Hakkai, Gojyo, and Goku realize that they have a chance to beat up on a Sanzo-lookalike. Also used as AnAesop, as when they win against their clones - who are wearing their clothes from the first season - they explain to the confused demon that they are not the same people as they were when the clones were created and they grow and learn as blah blah blah.

* Subverted in a stand-alone episode of ''LightNovel/{{Slayers}}''. A villain uses an enchanted mirror to create dark duplicates of his victims, including main characters Lina and Naga. The clones are supposed to be the "reverse" of the originals - which, to the bad guy's surprise, means the copies are meek, modest and peaceful, not evil.

* In ''ComicBook/SonicTheHedgehogArchieComics'', as well as having Shadow, and various Metal Sonics, there is the alternate world known as Moebius, home to kindly Dr. Kintobor (Robotnik's "evil twin") and the Anti-Freedom Fighters, the evil twins of the Freedom Fighters. Their leader was Anti-Sonic, the evil twin of Sonic himself, who proved to be very inept - despite helping Alicia (the evil Sally) depose of her father, he hadn't won a single fight since. Amongst his failures were accidentally giving the Sonic Underground Robotnik the Bio Borg instead of Robo-Robotnik and getting struck down by Antoine ''by accident''. Compare this to Anti-Antione (later known as Patch), Antione's evil twin, who successfully replaced Antoine, nearly ruined his relationship with Bunnie, poisoned King Acorn, killed Antoine's father and nearly took the throne before Sonic stepped in. Thankfully, Anti-Sonic got better after he TookALevelInBadass by becoming Scourge.

* In the classic voiceless Swede horror film ''The Rat King'', domehow a rat manages to masquerade as the hero's girlfriend. [[AWizardDidIt (Don't ask.)]] She blows her cover by making the [[SexIsEvil grave error]] of wanting to have sex with the hero (it's the 1910s or so) - he immediately [[IncrediblyLamePun smells a rat.]]

* In ''Literature/{{Haunted 1988}}'' there are some horrendous acts going on, and the family says it's Christina's evil twin sister who is doing it. [[spoiler: Except there is no evil twin - it is just Christina.]]

* ''Literature/MikeHammer'': "One Lonely Night" by Creator/MickeySpillane. An up-and-coming politician campaigning against corruption and DirtyCommunists hires Mike Hammer to catch his insane twin brother, who committed a murder in public in apparent attempt to destroy his reputation (fortunately, the politician was giving a speech before hundreds of people at the time). [[spoiler:Inverted in that Mike discovers the brother is a ''fraternal'' twin who doesn't look anything like the politician, and it was actually the politician who committed the murder - he hired a look-alike actor to give the speech and thus take suspicion off of himself.]]

* The existence of an evil twin turns out to be a plot point in resolving the murder in one of the ''Literature/TheCatWho'' novels. [[spoiler:Everyone thinks that mild-mannered David is mourning the recent murders of his twin brother Harley and sister-in-law Jill, and that the tragedy is what caused the twins' mother to have a stroke. It's eventually revealed that Harley was having an affair with David's wife, and they cooked up a scheme in which Harley killed both David and Jill and took David's place. The mother's stroke happened when ''she figured it out''.]] It's especially jarring because prior to all of this, no one had any suspicions about either twin.

** The series plays pretty heavily on this trope, as Elena learns that her identical-appearing ancestor Katerina Petrova is [[spoiler: alive and regularly killing people as a vampire named "Katherine"]], and both are part of a supernatural heritage of reincarnated {{Doppelganger}}s. Over the entire show, lead actress Creator/NinaDobrev plays three versions of the Petrova Doppelgangers - all of whom eventually make out with fan favorite [[spoiler: Elijah]]!

* ''Series/PrettyLittleLiars'' outright abused this along with IdenticalStranger, with the reveals of Uber - A [[spoiler: Mary Drake]], Spencer's mother [[spoiler: and killer of her own twin sister, Jessica Drake]] and AD [[spoiler: Spencer's twin sister, '''A'''lex '''D'''rake]].

** This trope is parodied in another ''Saturday Night Live'' skit one which is titled "Jay's Evil Twin," in it... Leno uses a fake moustache to determine if his date (Joan Cusack) will put out - his evil twin Wade.

'''Jay's Evil Twin''': ''[releases an evil laugh]'' Jay - that little weasel! That sniveling druid! What kind of a man would read ''Our Bodies Ourselves''? I've got my own version of that book, baby - it's called ''Your Body Myself!'' ''[releases an evil laugh]''\\

'''Jay Leno''': ''[releases an evil laugh, as he peels the fake moustache off his upper lip]'' You know.. I had a hunch that dame wasn't going to come across on the first date. You know, this evil twin thing works every time - I could have blown three hours and who knows how much dough on that girl. But, anyway.. ''[checks his watch]'' My God, it's still early... I can still go to Hef's place, maybe meet somebody else there. See you later. ''[releases evil laugh as he exits the apartment]''

* A two-part episode of ''Series/TheIncredibleHulk1977'' introduced viewers to another Hulk, created by a similar process to the one that transformed David Banner - but even more wild than the one we know, and actively malevolent and murderous.

* Lord John Roxton gets one in one episode of ''Series/SirArthurConanDoylesTheLostWorld'' after he is cursed for disturbing a graveyard's peace. The protector takes the ruthless and violent part - basically the hunter part - out of him and gives it a life of its own. Evil!Roxton tries to kill the good one, using Marguerite as bait. It ends in a MirrorMatch.

** The ninth clone introduced (counting three killed before the series starts), Helena, was raised by a group of religious extremists to kill off the other clones. [[spoiler:At first, the other characters just assume, as the audience is meant to, that she's just another clone; but she's ultimately revealed to literally be Sarah's twin sister. It's ultimately subverted, however. Helena may be murderous, but she's not ''evil'' - she's just an abused young woman who's been taught some ''very'' bad morals. Over time, she goes through a HeelFaceTurn.]]

* Discussed on ''Series/{{QI}}'': Creator/StephenFry asks how to determine which of identical twins committed a crime if you have eyewitness accounts, fingerprints, and DNA evidence[[note]]The answer is the fingerprints, which though very similar are ''not'' identical[[/note]]. Creator/JimmyCarr responds "they're twins - it's the evil one!"

* Music/{{Kamelot}}: The album ''Music/{{Silverthorn}}'' has the unnamed protagonist framed for murder by his twin brother, Robert - specifically, Robert murders the protagonist's wife, then convinces everyone via ThePowerOfActing that he is the protagonist and the protagonist is him. Initially, the twins were very similar, but their [[AbusiveParents father]] focused his abuse mainly on Robert after the death of the twins' younger sister, leading Robert to snap. It should be mentioned that according to some EpilepticTrees, Robert may be a SplitPersonality of his unnamed brother and not a real person.

* The Wrestling/HulkHogan-Wrestling/AndreTheGiant match on ''The Main Event'' in early 1988 was supposed to have set up an "evil twin" storyline involving referees (and real-life twin brothers) Dave and Earl Hebner. [[note]]Dave had been assigned to the match, but unknown to Hogan, Wrestling/{{Ted DiBiase}} had paid an unknown man to have plastic surgery to look like Dave and eventually count Hogan's shoulders to the mat when Andre tried to pin him. In the match's aftermath, Dave - who had been detained backstage ran out and confronted his lookalike (Earl, who was as of yet unidentified), after which the fake attacked Dave.[[/note]] The WWF built heat for Earl through a {{Kayfabe}} "investigative report" in ''WWF Magazine'', made Earl out to be the Cain to Dave's Abel, citing such examples as cheating in school and mistreating his brother's girlfriend, all while posing as Dave. However, when Dave became legitimately injured in the aftermath of the Hogan-Andre ''Main Event'' match, the "evil twin" storyline was dropped and Earl "came clean."

* Subverted in ''VideoGame/SagaFrontier'' with Blue and Rouge. Blue is one of the seven main characters. Rouge is a secondary character. They are doomed to fight each other to the death. [[spoiler:Now, since Blue is a main character, you'd think he's the good one, right? ''Wrong''. Blue is very willing to manipulate others for his own means, whereas Rouge is a friendly, personable guy who will join others on their quest.]] Subverted further in that [[spoiler:the two are different halves of the same person, split at birth - several types of magic in the Saga Frontier world are mutually exclusive, so if you learn one type, you can't learn the other; splitting him in two lets both halves learn different types (and Blue is told early on that if Rouge learns a type of magic, Blue ''can't''). The "fight to the death" is actually how the two recombine.]]

* In ''VideoGame/Persona4'', ''every single person in existence'' - except, it seems, the Protagonist [[spoiler: until the final episode of the anime]] - has an evil twin called a "Shadow" born of their repressed feelings and thoughts. Get stuck in the [[MentalWorld TV world]], and you'll end up meeting it.

* In the fourth ''VideoGame/DetectivesUnited'' game, it's revealed that Agent Brown has a twin brother, Mortimer, who is wreaking havoc on a small community called Restville. Naturally, SpotTheImposter comes into play as part of the story - the difficulty is enhanced by the fact that the twins, who have the same voice, are also both ''[[spoiler:invisible]]''.

* ''Webcomic/KidRadd'' features an Evil Twin as one of a GoldfishPoopGang duo - he serves as the titular character's ShadowArchetype later in the story.

* Subverted in ''Webcomic/{{Pandect}}'' - Ice and a man who is like a father to him bear a striking physical resemblance, leading Ice to self-consciously dub Rocko his evil twin.

* Good old-fashioned separated-at-birth actual twin Nale in ''Webcomic/TheOrderOfTheStick''. He's the head of the QuirkyMiniBossSquad (but not TheDragon, oddly enough), while his good twin Elan is a comically inept bard. Further, the members of his "Linear Guild" were deliberately chosen by Nale to be [[EvilCounterpart "evil opposites"]] of the rest of the good guys (though he does recruit a TokenGoodTeammate as a counterpart to [[SociopathicHero Belkar]]). Not to mention that Elan is ChaoticGood while Nale is LawfulEvil. Further parodying the trope, Nale has a goatee - and his own actions have rendered Elan unable to grow facial hair. Lastly, Nale is a SdrawkcabName of Elan.

--->'''Miko Miyazaki''': Wait - you are serious? That is your actual explanation? "My evil twin did it"?

* The False Guenevere in ''Webcomic/ArthurKingOfTimeAndSpace''. In the baseline arc, she's the same as in the mythology - Guenevere's identical half-sister plotting to take Arthur and the throne. In the contemporary arc, she's Guenevere's full sister Fasha, and probably isn't exactly ''evil'', although she may be a StalkerWithACrush. And in the space arc she's [[CloningBlues a clone]], and again isn't evil, genuinely believing herself to be the real Guenevere. The one thing all three have in common is that they love Arthur and [[spoiler: don't care much for Lancelot, thereby allowing space and baseline Arthur to have a Queen who loves him completely while convincing himself that [[IJustWantMyBelovedToBeHappy he just wants Guenevere and Lancelot to be happy]].]]

* In the ''WesternAnimation/BountyHamster'' episode "Twin Cheeks", Cassie comes across the roughest, toughest bounty hunter around - her alternative universe self! While certainly meaner, she actually turns out to be not quite as bright, and loses to the Real Cassie in a game of spaceship chicken.

** Robotic, yes. Twin, yes. Evil? Batman himself wondered at the end of the episode if it had managed to develop a soul, since it was in anguish at the thought that it might've accidentally killed him (the Bat). So evil - not so much, no.

** Don't forget Galatea, LawfulEvil pawn of the Cadmus project. TwinTelepathy between her and Supergirl ''may'' have led her to develop a conscience about her actions - enough to hesitate from killing ComicBook/TheQuestion when he [[BatmanGambit challenges]] her to do so. But by the time of 'Panic in the Sky', she gives only a mocking reference to fighting the Justice League because they're dangerous, and promptly admits she's in the fight to kill Supergirl.

** Interestingly, Darkwing's evil side - Negaduck (II), but also his non-galvanized EnemyWithout, who acts almost identically - seems to bring out his ''good'' sides in a non-moral sense. The original is so conceited and bumbling he often can't get anything done until he really [[LetsGetDangerous gets dangerous]], but Negaduck is simply constantly angry and doesn't stop to pose or fool around. Because of this, the Evil Twin in this case has more attitude and is much more badass much of the time. Of course, he does have the drawback of being compulsively evil for its own sake and AxCrazy.