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[[quoteright:300:[[WesternAnimation/XiaolinShowdown http://static.tvtropes.org/pmwiki/pub/images/literal-split-personality_148.jpg]]]]
[[caption-width-right:300:Not multiplication, division.]]

->'''Slipstream''': Each of us clones represents one aspect of your personality. [[DirtyCoward He's a coward]], [[SmallNameBigEgo he's an egomaniac]], [[ProfessionalButtKisser he's a suck-up]], [[BadLiar he's a liar]].\\
'''Starscream''': So... which part of me did ''[[OppositeSexClone you]]'' come from?\\
'''Slipstream''': ''[[YouDoNotWantToKnow Don't ask]].''
-->-- ''WesternAnimation/TransformersAnimated''

A character gets split into two or more copies of themself, each of which reflects some facet of their personality. This can be similar to EvilTwin, but the split need not be along the good/evil axis. Sometimes seen as part of a JourneyToTheCenterOfTheMind. When this is not the case, it's usually an effect of the AppliedPhlebotinum of the week.

Often the parts have to work together, as none of them is individually capable of what the original character was. Sometimes, as they spend more time together, they start to become more like each other. Ultimately, they may come back together through a FusionDance that is also a SplitPersonalityMerge.

Compare EnemyWithout, but the components are not necessarily enemies, and unlike in EnemyWithout none has any particular claim on being the "original" version. Also compare SelfDuplication, which is similar in appearance, if nothing else. Contrast FusionDance, where two or more beings become one being.

Not to be confused with HalfTheManHeUsedToBe.

----
!Examples:

[[foldercontrol]]

[[folder:Anime & Manga]]
* Nana Suzuki from ''Anime/SevenOfSeven'', who was split into seven by a FreakLabAccident involving a secret experiment of her scientist grandfather.
* Fuuko from ''VisualNovel/{{Clannad}}'' might count. After the car accident there is the Fuuko in the hospital and the one in the school that everybody seems to be forgetting.
** And by extension, [[VisualNovel/{{Kanon}} Ayu Tsukimiya]], as Fuuko is an {{expy}} of her.
* In ''Manga/AhMyGoddess'', Urd gets split into her Goddess and Demon halves, with the former acting much more like [[YamatoNadeshiko Belldandy]] and the latter more like her [[{{Jerkass}} mother]] (not to mention Demon-Urd taking the {{Stripperiffic}} outfits of regular-Urd to extremes). They eventually realize that neither Urd is the true Urd and recombine.
* ''Manga/SgtFrog'' has a few examples.
** In Episode 15, resident {{Yandere}} Momoka {{split|Personality}} into her [[ShrinkingViolet shy, retiring side]] and her [[SuperpoweredEvilSide aggressive, angry side]] (who normally co-exist and switch depending on the situation) thanks to a Keronian G-force simulator and an ill-timed [[LightningCanDoAnything lightning strike]].
** The Keroro episode "Giroro: The Man with Seven Faces ([[VerbalTic De Arimasu]])" is a direct parody of ''Seven of Seven'', and features Giroro being accidentally split into his 7 selves: evil American soldier Giroppe, shy child Girorin, housewife Girocchi, poetic girl Giroko, suave romantic Giropon, normal Giroro, and cool-looking Girosama, the one with the nice laugh.
* In ''Manga/RosarioToVampire Capu2'', the Lilith Mirror splits Moka into her Outer and [[SuperpoweredEvilSide Inner]] forms. Both of them are unstable apart, and since the Lilith Mirror's magic needed to be reversed, they rejoin shortly after they split, much to Kokoa's disappointment.
* ''Manga/DragonBall'': When Kami wanted to become Guardian of the Earth, he expelled all of his evil, which took on a life of its own as the Demon King Piccolo. After being sealed for hundreds of years, being released, and eventually dying at Goku's hand, Piccolo reincarnates himself as his own son. Piccolo Jr. eventually undergoes a HeelFaceTurn and remerges with Kami.
** Majin Buu goes through something similar. After the pink bubblegum demon goes through a HeelFaceTurn thanks to the local FakeUltimateHero befriending him, said FakeUltimateHero nearly being killed provokes Buu's wrath. Not wanting to lose control and go back to his evil ways, Buu expels all his evil, which takes the form of a second, purely evil Buu. The two Buus come to blows and the battle ends with the evil Buu absorbing the good Buu. Eventually, they're separated again and the evil Buu is destroyed, allowing the good Buu to live happily ever after.
* ''Anime/{{Gunnm}} (Battle Angel)'' has Den, the cybernetic warlord and resistance leader who is actually [[spoiler:a [[UnstoppableRage rage-driven]] split personality of radio star Kaos, given independent existence with a remote-controlled robotic body created by MadScientist Desty Nova]].
* ''Manga/{{Naruto}}'':
** Zetsu is a plant-man hybrid where half of his body is black, and the other half is white. Both represent a different personality: the black half is serious while the white half is more easygoing. [[spoiler:They can split apart, with the white half being able to make copies of itself.]]
** An episode from one of the second anime's filler arc called "Revenge of the Shadow Clones" has Naruto held hostage by 4 of his shadow clones. He has 4 personalities; The gloomy one represents his sadness and loneliness, the angry one represents his rough and proud attitude, the happy one represents his joyful side and how he cares about everyone and the feminine girly type represents his overuse of his sexy jutsu. However the whole thing turns out to be a dream by one of his clones who saved him from a falling rope pulley.
* ''ReturnToLabyrinth'' - [[GodSaveUsFromTheQueen Mizumi]], the Queen of Cups, has the power to create ablations, carving off one of a person's aspects into a new being. [[spoiler:Moppet is an ablation of Sarah's dreams. Moulin and Drumlin are ablations of Mizumi herself, respectively her regret and hope.]]
* In the ''Manga/TheLegendOfZelda: Four Swords'' manga, each Link (aside from Green Link, who retains the original Link's complete personality) embodies a different part of his personality. For example, the blue Link is rather hot-headed, the red Link is cheery, and the purple Link is crafty and thinks a lot.
* ''VisualNovel/{{Shuffle}}'' had Sia's more aggressive split personality, Kikyou, take over when Sia was being too indecisive in what to do about Rin. Kikyou is actually [[spoiler:Sia's dead little sister who made a pact with Sia when they were still unborn, enabling her soul to share Sia's body]].
** They can literally split in one of game's endings.
** Also, [[spoiler:Lycoris]] can take over [[spoiler:Nerine]] at times, as shown in anime and ''[[UpdatedRerelease Essence+ ]]'' bonus scene.
* A {{Filler}} story of the ''Manga/RanmaOneHalf'' anime had [[TricksterMentor Happosai]] use a special incense to duplicate Ranma's [[GenderBender female form]] in [[OppositeSexClone a separate, independent entity]] to do his bidding. Problem is, it was ''pure evil'', had phenomenal PsychicPowers, and kept trying to [[OurVampiresAreDifferent seduce the original Ranma to drain his]] LifeEnergy.
* [[spoiler:Father]], the BigBad of ''Manga/FullmetalAlchemist'', can do this at will. He expels aspects of his own personality that he doesn't like, and these discarded traits form separate individuals who typically become his minions. To a certain extent, he regards them as his children, but that's mostly because he has family issues.
* ''Manga/{{Bleach}}''
** Starrk has the power to split his soul into other beings, including creating an entire pack of wolves to function as his army. [[spoiler:Starrk and Lilinette don't know which of them was the original or whether identifying an original even matters. They were originally one being who created the other as a companion to escape their desperate loneliness.]]
** Ichigo's [[BattleInTheCentreOfTheMind inner Hollow]] tells Ichigo that he and [[TalkingWeapon Old Man Zangetsu]] were originally one being that became split in two. Ichigo dismisses in the inner Hollow's rant because he regards Zangetsu as a mentor figure and the inner Hollow as an enemy that has to be beaten down and controlled. [[spoiler:Ichigo's real Shinigami power is the Hollow. The Old Man is his Quincy power, which fought a losing battle against the ever-strengthening Hollow to prevent Ichigo becoming a Shinigami. Ichigo embraces both spirits equally, thus earning [[DualWielding two swords]].]]
* [[spoiler: D'Arcmon]] and [[spoiler: [=HippoGryphomon=]]] in the ''Anime/DigimonFrontier'' movie ''Island of Lost Digimon''. It turns out that they were actually [[spoiler: two halves of the villainous Murmuxmon, who was posing as leaders of the rival factions in order to resurrect Ornismon.]] Although it should be noted that the American dub implies it to be VoluntaryShapeshifting instead of this, which kind of makes more sense.
* One possible explanation for The Medicine Seller in ''Anime/{{Mononoke}}''. Specifically, the character has a 'default' form and an alternate, demon-slaying form that appears when he draws his sword. However, the transformation sequences between, and some of their interactions, shows them as separate bodies- though they have the same voice and, to a great extent, demeanor.
** Often, while transitioning between the two, both bodies are present, but the markings on his face and clothes disappear, moving onto his other form.
** During the Umi-Bozu arc, the default form appears briefly to hand his mirror to the demon-slaying form.
* [[ActionGirl Amamiya Sakurako]] of ''Manga/{{Psyren}}'' [[spoiler: gains one, Abyss, who she learns to fight alongside]].
* ''Manga/TheWorldGodOnlyKnows'': When [[ActionGirl Kusunoki Kasuga]] gets possessed by a spirit, her personality splits between her normal self and her cute side, which starts manifesting whenever she sees something cute and fights reacting to it.
* In ''Anime/{{Pokemon}}'', Sabrina's shunning of her emotions in favor of focusing solely on training her psychic powers eventually caused her emotional side to split off into a CreepyDoll-like body. When a Haunter Ash had befriended got her to laugh she underwent a SplitPersonalityMerge and learned to embrace her emotions.
* In ''{{Franchise/Anpanman}}'', Baikinman created a power-up machine that he ''meant'' to give him enough strength to easily defeat Anpanman. However, thanks to various complications, other characters have a tendency to fall into it and instead gain two clones, most commonly a sensitive (or feminine) one and a tough (or masculine) one. They still follow some of the same motives as the original (like Mushibaikinman's clones still want to defeat Hamigakiman and Horrorman's still have a crush on Dokinchan). In the end of these episodes, the original and their clones will end up landing in the machine again, shorting it out, yet merging the clones back into the original character.
** Dr. Hiyari once created a serum for Rollpanna so it can split her evil counterpart to defeat Anpanman. Unfortunately, it didn't went well as the evil Rollpanna causes mass destruction. This also weakens the real Rollpanna since she needs the two halves together.
* In ''Anime/DokidokiPrecure'', [[spoiler: Marie-Ange literally splits her personality in two with her own hands and sends each half off to be born as a person.]]
[[/folder]]

[[folder:Comicbooks]]
* Triplicate Girl's "Triad" incarnation from the first ''ComicBook/{{Legion of Super-Heroes}}'' reboot was portrayed this way, with her three split selves portrayed as TheThreeFacesOfEve. Since most of the other inhabitants of her homeworld were (or forced to behave as) [[SingleMindedTwins Single Minded Duplicates]], she left after a traumatizing stay at BedlamHouse barely failed to "cure" her of her mental disorder.
* Jamie Madrox from the ''Comicbook/XMen'' comics has a mutant power that creates duplicates of himself upon physical impact. Each tends to manifest some aspect of his personality. Originally, it (usually) didn't work that way, with dupes being exactly identical to the original unless outside forces screwed with his powers (which happened at least twice). But now, dupes always have their own personalities to varying degrees. And can come back out when he doesn't want them to, sometimes.
* One ''[[Franchise/JusticeLeagueOfAmerica JLA]]'' storyline did this to the League's entire roster - splitting Superman and Clark Kent, Batman and Bruce Wayne, etc. Hilarity spectacularly failed to ensue: Clark was [[BecomingTheMask scared of heights]] while Superman was losing his humanity, Bruce Wayne had no outlet for his rage at the criminal element while Batman lost his motivation, etc. As for the others... [[FromBadToWorse it got worse]]. Only Franchise/WonderWoman and Aquaman were immune, and then only until they got hit with a second blast: Aquaman got split into fish and human, and Diana was split into clay statue and disembodied spirit... [[BatmanGambit which was exactly what she wanted to happen]]. ComicBook/PlasticMan got split into Plas, who literally ''could not'' be serious, and Eel O'Brian, [[BeneathTheMask the ruthless and manipulative ex-career criminal.]]
** Worth noting, this wasn't intended to be a bad thing; some aliens did it because they wanted to help the heroes by giving them the chance to have a break without having to worry about crime. [[spoiler:Or so they claimed. Then we found out their motives weren't quite so altruistic.]]
* Franchise/{{Superman}} once was an energy being; he then became two energy beings: Superman [[RedOniBlueOni Red and Blue]]. [[DorkAge/DCComics We don't like to talk about it.]]
** Not to be confused with the ''other'' Superman Red and Superman Blue, where the two were more or less identical (except for their costumes). This was an "imaginary story" in which the two wound up unbottling Kandor, rebuilding Krypton (eliminating kryptonite in the process), curing all evil on Earth with an "anti-evil ray" (as a side benefit, Reformed!Luthor came up with a cure for all disease), and marrying both Lois Lane and Lana Lang (one each, it wasn't ''that'' weird). We ''like'' to talk about this one, since it's so quintessentially Silver Age goofy.
** He's also been split into Superman and Clark numerous times. The moral is usually that it's the "ordinary guy" part of his personality that gives Supes his heart and sense of perspective--and without those qualities he is at best arrogant and at worst terrifying.
* The villainess Array, from Fred Perry's ''ComicBook/GoldDigger'' comic, had the ability to create custom-built alternate personalities while splitting them into their own bodies (which could be crafted to look like anyone or anything she wanted). However, when she reabsorbed her duplicates into herself, the personalities remained permanently distinct from the original, giving her a massive MPD. Fortunately for her, they generally get along, and allow her to be a one-woman conspiracy in the process.
* ''Comicbook/{{Supergirl}}'' once had an evil half released by black kryptonite. She came out wearing a [[PaintItBlack black version of her normal outfit]].
* This has happened to [[Comicbook/IncredibleHulk the Hulk]] on occasion, usually separating Bruce Banner and the Savage Hulk. Paul Jenkins' run saw a number of [[JourneyToTheCenterOfTheMind journeys into Banner's mind]] with various Hulks showing up representing different aspects of Banner's psyche.
** Jason Aaron's run kicks off with the Green Scar Hulk (a smarter version of the Savage) getting himself split from Banner. Banner doesn't take it at all well.
* Appears to be happening to the Enchantress in the first issue of ''JusticeLeagueDark''. Her original self lies withered in an isolated cabin, surrounded by baleful spells. Meanwhile a [[TheIngenue wide-eyed]] June Moone wanders the streets surveying the weirdness.
* Happens to Negaduck at the end of "[[ComicBook/DarkwingDuck Crisis On Infinite Darkwings]]". [[spoiler: [[GreyGoo To the n-th degree, it turns out.]]]]
* Sandman had this happen to him once, in [[Franchise/SpiderMan Peter Parker: Spider-Man]] by some plot. He got split into his core, his childhood self, his [[OppositeSexClone feminine side]], and unfortunately, his [[SuperPoweredEvilSide evil side]] in order to handwave why he stayed a crook.
* ''Comicbook/TheMightyThor'' has had Don Blake fissioned off from himself a couple of times. Don always winds up with Thor's sense of humility (after all, that was the reason Odin created the Don Blake persona to begin with), and without that part of his personality, Thor becomes a conceited jerk.
* ''VideoGame/WorldOfWarcraft'' has this with [[spoiler: Varian Wrynn, who was split into two parts: King Varian, a royal puppet under the control of Lady Katrana Prestor (Onyxia), and Lo'Gosh (a nickname given to him by orcs), amnesiac arena champion.]]
[[/folder]]

[[folder:Fan Works]]
* In ''[[http://www.fanfiction.net/s/860445/1/Prism Prism]]'', [[Manga/RurouniKenshin Kenshin]] is split into a thirty year old version of himself, a teenage self, and a child self. Some different aspects of his personality end up split among them as well, such as the teenage version having a short temper and little self-control, most of which went to the adult version.
* A variation occurs in ''Fanfic/HogyokuExMachina'' when [[Manga/{{Bleach}} Ichigo]] figures out how to manifest [[EmpathicWeapon Zangetsu]] and his [[SuperpoweredEvilSide hollow self]] in the real world. The latter and [[BloodKnight Zaraki]] end up getting along swimmingly.
* Discord does this to Twilight in ''FanFic/BecomingPonies''. Unusually, her mind itself isn't split, exactly; only her magical power and ability is removed and installed in a new body.
* ''FanFic/AMightyDemonSlayerGroomsSomePonies'': [[spoiler:All the ponies of Dream Valley]] were created as representations of some part of their creator's personality. This is also why [[spoiler:there are so few stallions--their creator, Queen Majesty, did what she could with what little masculine aspects her mind had within her.]]
* In ''Fanfic/CalvinAndHobbesTheSeries'', when the protagonists [[JourneyToTheCenterOfTheMind journey into Socrates' mind]], they find various aspects of his personality - his happiness, sneakiness, nobility, and ultimately his negativity (who ''made'' the whole dimension in the first place to rule over the other aspects).
* The central conflict of Webcomic/APieceOfPie occurs when Twilight Sparkle's experiment results in four aspects of Pinkie Pie's personality taking form and running amok.
* In ''FanFic/MegaManReawakened'', Gemini Man's Gemini Duality mode splits his personalities into two bodies.
* Quite commonly applied in ''Franchise/{{Naruto}}'' fanfiction to the Shadow Clones. This leads to situations like Naruto brainstorming with himself, having to dispel clones that refuse to do boring things ([[MundaneUtility like housework]]) or, in [[https://www.fanfiction.net/s/9285638/1/Leftovers a certain fanfiction]], having a defective clone perform the Oiroke no Jutsu and act like a pervert.
[[/folder]]

[[folder:Films -- Animated]]
* In ''Anime/FinalFantasyVIIAdventChildren'' Kadaj, Loz and Yazoo are "remnants" of Sephiroth, who, having died but still existing in TheLifestream, was unable to create a complete avatar of himself. Instead he created these puppets, who were separate persons (and nowhere near as cool) but each embodied some part of his personality. [[AllThereInTheManual Apparently]], Kadaj represents his anger and rage, Loz his speed, [[DumbMuscle strength]] and attachment to Jenova, and Yazoo his charisma and aloof demeanor.
* [[GoodCopBadCop Bad Cop[=/=]Good Cop]] from ''WesternAnimation/TheLEGOMovie''. He's one of those minifigures whose head has two faces with different expressions and rotates to change them, the "inactive" face being obscured by the helmet.
-->'''Emmet:''' Look, um, [[GenreSavvy I watch a lot of cop shows on TV]]. Isn't there supposed to also be... Isn't there supposed to be a good cop?\\
'''Bad Cop:''' Oh, yes. But we're not done yet.\\
''(Bad Cop's head swivels around to become Good Cop.)''\\
'''Good Cop:''' Hi, buddy! I'm your friendly neighborhood police officer. Would you like a glass of water?\\
'''Emmet:''' Yeah, actually, that sounds--\\
'''Bad Cop:''' ''(head switches back to Bad Cop)'' Too bad! ''(punches glass across the room)''
** Both are voiced by Creator/LiamNeeson, but Good Cop sounds nothing like him.
[[/folder]]

[[folder:Films -- Live-Action]]
* In ''Film/SupermanIII'', Supes gets exposed to some "artificial" [[GreenRocks Kryptonite]] that turns him evil, then splits him into an evil Superman and a good Clark Kent.
* The Skeksis and the [=UrRu=] (Mystics) of ''Film/TheDarkCrystal'' are the evil and good halves of the [=UrSkeks=].
* A bizarre variation of this happens to Jack Sparrow in ''Film/PiratesOfTheCaribbeanAtWorldsEnd''. Naturally, considering the character, this is taken to extremes with an entire ''crew'' of dozens of Jack Sparrows, each one supposedly reflecting one aspect of his character.
* The movie version of Sadako Yamamura, from ''Film/TheRing''. Originally a child with [[SuperPowerLottery unbelievably powerful]] PsychicPowers, her father [[NoodleIncident somehow]] split her into an [[TheIngenue innocent side]] and an [[SuperpoweredEvilSide evil, supernatural one]]. The former was sent off to live a (semi) normal life, grew up, and went to college. The latter was imprisoned and subjected to drug treatments that stunted her growth --but did little to assuage either her malevolence or her powers, which she used to contact ([[spoiler: and [[BackFromTheDead revive]]]]) her adult half halfway across the country. Their [[TearJerker reunion]]... [[SealedEvilInACan resulted]] in [[StartOfDarkness tragedy]] for [[KillEmAll everyone involved]].
* In ''Film/TransformersRevengeOfTheFallen'', Arcee is composed of three motorcycles. Each body has the same personality, though. In the comics, all speak at once, similar to ''TransformersGeneration1'' character Reflector.
* In ''Film/SpyKids 3: Game Over'', [[BigBad the Toymaker]] was advised by three holographic characters with his face: a SociopathicSoldier, a CorruptCorporateExecutive and a NewAgeRetroHippie.
-->'''The Toymaker''': I don't mind talking to 'myself', but when you guys start to cut me out of the conversation, that's when it gets a little strange.
* Much like the ''Franchise/SilentHill'' video games, in the film ''Film/SilentHill'' the psychic little girl Alessa Gillespie split into two after enduring terrible trauma: the menacing CreepyChild "Dark Alessa", and the innocent Sharon Da Silva, adopted daughter of the film's protagonists. This trope is still present in the sequel ''Film/SilentHillRevelation3D'', where Sharon and her adoptive father have renamed themselves (she's now Heather Mason).
[[/folder]]

[[folder:Literature]]
* One of the ''Literature/{{Animorphs}}'' books had Rachel, shapeshifted into a starfish, get cut in half with a spade. The two starfish halves regenerated into Nice and [[{{Jerkass}} Mean]] Rachel, both quite explicitly called that in the text. [[spoiler: However, it wasn't just good and evil: in a situation inspired by the Trek version, the kind Rachel could plan complex scenarios but was incapable of focusing in the moment, and the violent one was the opposite, incapable of thinking beyond the moment. They had to work together because neither alone could function well enough to do what she wanted.]]
* In ''Literature/AnansiBoys'' by Creator/NeilGaiman, [[spoiler:Anansi's son gets split into Fat Charlie (the uncool, apparently nonmagical one) and Spider (the god).]] The analogy with starfish is made explicit, using the former trope name.
* In the [[Literature/TheWasteLands third book]] of ''Franchise/TheDarkTower'' series, Roland splits apart Odetta and Detta into two separate people whereas before, they had been two personalities in the same body. The two are then theoretically recombined to make Susanna, but Detta keeps showing up on her own anyway.
* Creator/WilliamSleator's young adult novel ''Literature/TheDuplicate'' features this, [[spoiler:or so the duplicates think. They're wrong, even if they manage to convince the original for a while.]]
* Creator/RobinHobb seems to have discovered a new use for this in ''Literature/TheSoldierSon'' trilogy - [[spoiler:it can solve TriangRelations]].
* A story by Creator/RobertSheckley involves a man who got a schizophrenia cure in his childhood by getting the other personalities siphoned into artificial bodies. He spends the story searching for them around the Solar System.
* Happens near the end of ''[[Literature/EndersGame Xenocide]]''. [[spoiler: Jane, Ender, and company make the first journey outside of spacetime and back in, in which the travelers keep or alter themselves and their possessions by imagining them so. The purpose of the trip succeeds: Ela creates a safe replacement for the descolada with her mind. The trip also brings surprises. Ender's fractured psyche forms two extra persons: Peter and Valentine as he remembers them from his adolescence. They all share Ender's soul.]]
* By ''Literature/TheHeroesOfOlympus'', it's revealed that most if not all of the Greek gods from [[Literature/PercyJacksonAndTheOlympians the previous series]] have Roman counterparts that differ from the original depending on what Roman ideals are placed on them. It's hinted that these counterparts are separate from each other and can combine.
* The Nilotic in Creator/CliveBarker's ''Sacrament''.
* In ''Franchise/TheCosmere'', each of the sixteen Shards that act as gods for various worlds are all [[PiecesOfGod fragments of an original uber-god]] called Adonalsium. When Adonalsium shattered, each Shard of his personality and power was taken up by a human Shardholder, becoming deities such as [[Literature/TheStormlightArchive Honor]], [[Literature/{{Mistborn}} Ruin and Preservation]], and [[Literature/TheReckonersTrilogy Calamity]].
* In ''Literature/{{Pact}}'', Rose and Blake Thorburn initially appear to be each other's DistaffCounterpart, the same person born a different gender, with one being the original and the other created by magic. However, it is revealed later that they are in fact two pieces of the same person, a progenitor of unknown gender and name, who were split into pieces by magic, with each getting parts of the original's personality-Blake got the [[TheIdealist strong moral compass]], Rose got the [[TheCynic deep-rooted cynicism]], and they both got enough [[OtherMeAnnoysMe mutual antagonism]] that it's a real danger that they'll destroy each other before [[EverythingTryingToKillYou their numerous enemies manage to do so.]]
[[/folder]]

[[folder:Live-Action TV]]
* Kirk, in the ''Series/{{Star Trek|The Original Series}}'' episode "The Enemy Within". However, the "evil" side proved to be the side with the strength to make tough decisions, proving that both halves are needed for the whole to work.
** And the seemingly meek, passive "good" side turns out to have more courage than the other, whose angry defiance hides terror of losing independent existence.
---> "Can half a man live?"
* In the ''Series/StarTrekVoyager'' episode "Faces," B'Elanna Torres is split into her Klingon and human halves by the Vidiians: the Klingon is a barely contained rage factory, the human is a simpering wimp.
* A spell intended to separate Buffy's personality from her Slayer abilities in an episode of ''Series/BuffyTheVampireSlayer'' hits Xander instead, separating him into an "aggressive" Xander (charming, well-groomed, and confident; but hot-headed and impetuous) and a "passive" Xander (awkward, paranoid, and insecure; but with Xander's trademark sense of humor). Note that despite the negative Xander's suspicions, neither half is actually evil. Both Xanders also refer to "The Enemy Within" during the episode.
* ''Series/{{Smallville}}'':
** The opening episode of Season Four introduces black kryptonite. Martha uses it on Clark in order to try and deprogram him (long story) and it causes him to split into his good and evil sides, "Clark" and "Kal-El" (all of this most likely a MythologyGag to ''Film/SupermanIII''). [[spoiler:Unfortunately, the "fight" is very, very brief, with Kal starting to choke Clark only for Martha to toss the kryptonite to Clark, who smashes it into Kal's chest and fuses them back together.]] ''Lex'' got the black kryptonite treatment (here, it's created from ''heating'' regular kryptonite) in a later episode, with the good version being sweet (but not the crybaby many "good twins" are when this trope is used) and the evil version being... ''[[{{Superman}} Lex Luthor]]''.
** In the Season Eight finale, Clark uses black kryptonite to separate [[spoiler: Davis Bloome]]'s human half from his Doomsday side, so that he could fight him without having to worry about what he was doing to the innocent human half. Unfortunately, we then find out human [[spoiler: Davis]] isn't so nice after all - apparently, the things he had to do to keep Doomsday under control (namely becoming a SerialKiller) drove him crazy, [[spoiler:and madly jealous over [[MoralityChain Chloe]]'s relationship with Jimmy and the fact that she ran away with him just to protect Clark, he kills Jimmy]].
* ''Series/{{Farscape}}'':
** The show plays with this by duplicating the lead character, John Crichton, into two identical (equal and original) characters, both imbued with all the personality traits, good and bad, of the original. This happens at the same time as a split in the crew, with both halves of the crew believing that they have the real Crichton with them. This situation persists for half a season, and the repercussions run through the rest of the series. This functions as an arc-wide ResetButton for certain plot points that were almost too-neatly wrapped up. [[spoiler: HeroicSacrifice]], anyone?
** Also played straight in the episode "My Three Crichtons," wherein John is split into a PowerTrio: the original (ego), an animalistic version that acts purely on emotion (id), and a hyperevolved version that acts purely on the basis of logic and self-preservation (superego). Interestingly, the id is the most heroic of the trio.
* In ''Series/GeneralHospital'''s SupernaturalSoapOpera spinoff ''Series/PortCharles'', Livvie is split in two by her vampire lover Caleb. The bad half continues to live as Livvie. The good half has amnesia and is named Tess.
* In the ''Series/DoctorWho'' Creator/BigFinish audio "Caerdroia", this happens to the Doctor, who gets split into "the responsible one", "the loopy one", and "the nasty one".
** A variation, from the new series: the Doctor's severed hand grows into a duplicate of him due to Donna Noble's unintended interference. He becomes half-human and [[InformedAttribute apparently]] somewhat more callous in his strategies than the original, reminiscent of the Ninth Doctor's more desperate methods.
** In the Literature/PastDoctorAdventures book ''Managra'', three clones of Lord Byron are featured, each one reflecting a different part of the description "[[GothicHorror mad]], [[UnsexySadist bad]] and [[ByronicHero dangerous to know]]".
* In an episode of ''Series/GoodnightSweetheart'', the protagonist Gary gets hit by lightning at the exact instant he walks through a time-portal. He wakes up on one side of the portal, and later discovers that an unscrupulous, sex-obsessed version of himself appeared on the other side. HilarityEnsues. Doubly applies as it is later revealed that Gary isn't actually the good side...a third version of him, a very camp, charitable man, shows up at the end of the episode, explaining that he'd been busy helping out in an air-raid shelter.
* [[MeaningfulName Trey of Triforia]], the first "[[SixthRanger Gold Ranger]]" from ''Series/PowerRangersZeo'', had the alien ability to split into 3 parts, representing [[Franchise/TheLegendOfZelda Wisdom, Courage, and Power]]...uh, I mean [[WhatKindOfLamePowerIsHeartAnyway Heart]]. When he was injured, he was stuck as three beings, locking him out of using his Ranger powers and forcing their temporary transfer to someone else. They had to wait until the stars were right to recombine him and give him his powers back.
* The Series/RedDwarf episode "Demons And Angels" featured a triplication device, which created a Good Ship with crew (who exist in the starship equivalent of CrystalSpiresAndTogas, and can even make Pot Noodles edible), an Evil Ship with crew (where Rimmer's H has fallen sideways and... yeah) and a Neutral Ship with crew (i.e. the original gang). The Neutral Ship duly exploded, and it required a [[ReverseThePolarity polarity reversal]] to recreate it from the others.
** There's also the ''Confidence and Paranoia'' episode in one of the early series.
* ''Series/{{Charmed}}'':
** In a season 1 episode entitled "Which Prue Is It Anyway?", Prue casts a spell that accidentally creates 2 clones of her. One of the clones represents her fun, wild side, while the other clone exhibits her take-charge, business-like side.
** The same thing happens to Piper in one of the books.
* Kahlan in the ''Series/LegendOfTheSeeker'' episode "Torn". The reason for the split is a magical talisman that is used to transport the casting wizard and the Confessor to Idendrill. However, the talisman is partly guided by the Confessor's desires. In Kahlan's case, her Confessor side wanted to go to Idendrill to help the people there, but her emotional side did not want to leave Richard's side. The talisman resolved this conflict by splitting one person into two. Confessor!Kahlan ends up becoming the iron-fisted ruler of Idendrill, handing out harsh, logical punishments without regard for emotional content. The other Kahlan acts only in accordance with her emotions without any reason to temper them. Which means she can go from a loving partner to a ClingyJealousGirl in a heartbeat. Both end up having sex (Emotional!Kahlan finally has sex with Richard, while Confessor!Kahlan picks a random guy for procreation) and use that as grounds to refuse reintegration. Zedd confirms that neither is pregnant, claiming that only a "real" person can do that, and uses the talisman to put them back.
* Happens with Emma in ''MutantX''. She's split into her aggressive side and her passive side. They can't live without each other.
* Darrin of ''Series/{{Bewitched}}'' gets split into his fun loving side and his workaholic side by his mother-in-law.
* ''Series/{{Dollhouse}}'' has several interesting takes on this; the person is never "split" in any way, but they're in a room with a copy of their mind in someone else's body talking to them. The first one has a rebellious younger girl's brainscan tweaked to have the copy become "well-adjusted" and mentor the real girl into possibly getting over her traumas. In the second, [[HilarityEnsues hilarious]] instance, [[InsufferableGenius Topher]] puts an exact copy of his brain into Victor. They get along great until they're actually in the same room as each other.
* In ''Series/MyFavoriteMartian,'' one of Uncle Martin's machines gets [[LightningCanDoAnything struck by lightning,]] splitting him into triplets, one who agrees with everything, one who disagrees with everything, and one who can never make up his mind. The AnimatedAdaptation used the same plot with Martin's nephew Andromeda.
* In the season 6 finale of ''Series/{{Supernatural}}'', Sam is stuck in a MentalWorld where his identity has split into three personalities: Sam, Soulless Sam, and the Sam who's been tortured in the Cage.
* Occurred in an episode of ''Series/SabrinaTheTeenageWitch''. When everyone was pressuring Sabrina to go to a different college she ended up splitting herself into four different versions of herself without anyone knowing. Apparently she didn't even know about it herself until all four Sabrinas meet up towards the end of the episode.
* In ''Series/KamenRiderFourze'', the [[MeaningfulName Gemini]] [[MonsterOfTheWeek Zodiarts]]' TransformationTrinket causes the user's dark side to manifest as a separate entity the first time it's activated. The dark side then attempts to strengthen its own existence by making people hate and distrust the original, making the "weaker" one become more fake (such as its face becoming a white mask); after 24 hours, whichever side is stronger becomes permanent while the weaker fades from existence forever. [[spoiler:Unfortunately, this happens to [[GenkiGirl Yuuki]] when the bad guys force her to use the Gemini Switch, but our heroes manage to save her [[AlwaysClose just in time]].]]
* In the ''Series/{{Haven}}'' episode "Friend or Faux", Cornell Stamoran creates a copy of himself to clean up his messes and do the things he's scared to do. While he's an insecure DirtyCoward, his copy is a homicidal {{Badass}}.
-->'''Copy''': He's so easy to imitate, you know. I just do me and take out the cool parts.
-->'''Audrey''': So how does all of this work? You know what's in his head?
-->'''Copy''': I have all of his memories, but the balls are mine.
** In Season 5, Audrey's ''original'' evil self Mara resumes control of her body, but Audrey is eventually separated from her. Only Mara kept their abilities.
* ''Series/{{Warehouse 13}}''
** In the episode "13.1", it's revealed that Hugo Miller used an artifact to try to create an AI based on his own brain patterns. The result was that his right-brain was [[BrainUploading uploaded]] to the computer and became a [[TheSpock logical, unimaginative]] version of himself, while his left-brain was left in his body and became a TalkativeLoon who was institutionalised. The Warehouse agents and Hugo 2.0 both agree that the two halves need to be reintegrated, they just disagree about ''where''...
** In the episode "Savage Seduction" , the B-plot involves a college fraternity that uses Edna St Vincent Millay's candle (as in "my candle burns at both ends") to split the side of themselves that wants to party from the side that wants to study, so they can do everything. When the frat leader uses it on StraightGay DeadpanSnarker Steve, the "party" version is a CampGay and the "dedicated" version is TheComicallySerious (i.e., the camp one got the snark, leaving him as just deadpan).
* Rudy of ''Series/{{Misfits}}'' divides into crass, selfish Rudy One and sensitive, compassionate Rudy Two. They used to have a Rudy Three, who was murderously violent, but they had to kill him.
[[/folder]]

[[folder:Machinima]]
* In ''Machinima/RedVsBlue: Reconstruction'', we learn that Project Freelancer, a military program implanting {{AI}}s into elite soldiers, was only given a single AI to work with. So they subjected this Alpha AI to stress and [[ColdBloodedTorture psychological torture]] until it started breaking apart, producing fragmented consciousnesses based on one aspect of the Alpha - Delta represented its logic, Gamma its deceit, Omega its rage, and so on. The problem was that the fragment embodying ambition got the idea of becoming a "true" AI by attacking the other Freelancers and absorbing its siblings, giving rise to [[BigBad the Meta]].
* Near the end of ''Machinima/TheStrangerhood'' it's revealed that an accident occurred when Tovar was transported to the Strangerhood, which split him into two different people, one that was pure evil and one that was pure moron.
[[/folder]]

[[folder:Religion and Mythology]]
* [[HinduMythology Brahma, Shiva and Vishnu]]
* The Triple Goddess: Maid, Mother and Crone
* One possible interpretation of the Christian Father, Son and Holy Spirit
[[/folder]]

[[folder:Roleplay]]
* ''Roleplay/DestroyTheGodmodder'' has lots of this, almost always combined with AuthorAvatar, since players use it to spawn mini plot points and summon themselves as entities.
** And then the GM got one too...
[[/folder]]

[[folder:Newspaper Comics]]
* In ''ComicStrip/CalvinAndHobbes,'' Calvin successfully clones only the ''good'' aspects of his personality with his trademark cardboard box technology. This leads to a lot of people cracking "you'd be a lot smaller if that were true," remarks. This is eventually subverted: [[spoiler: since even Calvin's best qualities are still inherently his own, the "good" clone threatens to clobber his creator, vanishing in a PuffOfLogic for having done something evil.]]
--> [[TechnoBabble My ethicator machine must've had a built-in moral compromise spectral release phantasmatron!]] I'm a genius!
[[/folder]]

[[folder:Tabletop Games]]
* In 4th Edition ''TabletopGame/DungeonsAndDragons'', the Dragon God Io was cut in two by the King of Terror, Erek-Hus. The two halves then rose up as a pair of new deities, Bahamut and Tiamat, who then killed Erek-Hus. All Io's evil qualities, his hubris, arrogance, and envy, were embodied in Tiamat, while his good qualities, his desire to protect and his sense of equality, were embodied in Bahamut. Both gods inherited Io's preference for working alone, and became bitter enemies after the battle. In previous editions, Bahamut and Tiamat were instead the children of Io.
[[/folder]]

[[folder:Toys]]
* In ''Franchise/{{Bionicle}}'', Vezok got hit with a fusion ray set in reverse, causing his strategic cunning side to be split off. Notably, this was not an equal split, the double (named Vezon, the Matoran word for "double") had ''only'' Vezok's head for tactics; not his powers, not much of his appearance, not even his sanity. And unfortunately for Vezok, the split was permanent (even after getting a hold of the fusion device again, his teammates wrecked it out of annoyance and because him being smart again would make him harder to [[ChronicBackstabbingDisorder backstab]]).
* In the ''Franchise/TransformersTimelines'' fiction, Nexus Prime is a large Cybertronian who split his mind and body to form a combiner made of five individuals to help hide the pieces of a vital artifact from enemy hands. The individuals in question are unaware of this for the longest time, making some of their interpersonal dynamics (especially Skyfall and Landquake's OddFriendship) [[HilariousInHindsight Hilarious (or at least weirder) in Hindsight]]. There's also no clear way to classify which person represents which side of Nexus' personality, as they're all fairly three-dimensional personalities. [[spoiler: This also makes recombining a HeroicSacrifice: Becoming Nexus again means the end of all of them as individuals.]]
[[/folder]]

[[folder:Videogames]]
* In ''VideoGame/MegaManStarForce'', [[spoiler: Pat]] has a split personality, [[spoiler: Rey]]. Gemini becomes his EM wave partner. When he EM Wave Changes and becomes Gemini Spark, Gemini splits into two, and the two personalities split. Gemini Spark White merges with [[spoiler: Pat]]. The dominant one (the one you hit to damage), Gemini Spark Black, merges with [[spoiler: Rey]]. Thank Capcom for small blessings; in ''Star Force 2'', both of them are damageable separately.
** The ''MegaManX'' series has a few examples. [[AllThereInTheManual According to supplementary materials]], Colonel and Iris were the result of a failed attempt to create a second Mega Man X, but the part of the AI representing X's compassion rejected the part responsible for his martial prowess, or vice versa, so they had to be split off into sperate bodies. There's also the obscure [[NoExportForYou manga and trading card series]] character IX (Irregular X, presumably he'd be called MaX if he ever showed up in the English version), an evil clone of X made up of all his negative emotions created by parasitic NanoMachines. And then in ''MegaManZero'' it turns out that [[spoiler:the title character himself is one of these, being a cheap knockoff of the real Zero's body that was used by the evil Dr. Weil to siphon off all the good personality traits that Dr. Cain implanted in him, leaving behind the raging psychopath, known as Omega Zero, that Dr. Wily intended him to be.]]
* In ''VideoGame/NeverwinterNights2: Mask of the Betrayer'' [[spoiler: Safiya, Nefris, and Lienna]] are all aspects of [[spoiler: The Founder, AKA The Red Woman]], deliberately split off into separate bodies.
* ''VideoGame/TheLongestJourney'' features a character who was split into his logical and emotional halves. His logical side is a cold, amoral human; his emotional side is a Chaos Vortex that nearly kills the player character. When his two sides are reunited, he turns out to be a decent guy.
** Happens with the entire ''world'' in the backstory, with one Earth split up into the magical Arcadia and scientific Stark with the intention of reuniting them at a later date. This also creates several other pocket worlds.
* Twice in ''SamAndMax'':
** In ''Sam And Max Save The World'', Hugh Bliss 'separates Max's bliss' by symbolically cutting off [[SevenDeadlySins body parts connected to his sins]] - his violent hand, gluttonous stomach, and slothful tail. These body parts are then animated into a Violent Max mindlessly blasting at everything with his gun, a Gluttonous Max mindlessly consuming everything that comes near and a Slothful Max too depressed even to move, while the rest of Max's body wonders around in a blunted, blissed-out, terrifying daze with huge chunks carved out of his body.
** In ''Sam And Max: The Devil's Playhouse'', after Max becomes an EldritchAbomination, he creates Spores - flaming floating heads which carry an aspect of his personality each. These include TrademarkFavoriteFood-obsessed Max, DrillSergeantNasty Max, BrooklynRage NostalgiaLevel Max, ShipTease HoYay-with-Sam Max...
* In ''VideoGame/BreathOfFireI'', the party enters the mind of Mogu, who is in a coma, to find his personality fractured. They have to find his missing Courage in order to bring them together and wake Mogu up.
* And in ''VideoGame/BreathOfFireIV'', there's one of the most blatant examples. [[spoiler: Both Ryu (series protagonist) and Fou-lu (technical antagonist and Woobie) are actually two halves of the same god, the Yorae Dragon/Arukai no Ryuu, that was summoned 600 years ago on the western continent in a desperate attempt to stop a massive civil war. Unfortunately, the summoning was botched; only half the god made it across straightaway (becoming the first emperor of the Fou Empire), the other half ending up landing 600 years in the future and literally halfway across the world. (The Fou Empire and its precessor do ''not'' have a good track record at successful summonings.)]]
** [[spoiler: It should be noted the original split isn't good/evil here, but rather along Yin/Yang aspects (Fou-lu being the yin/water/cold aligned half, Ryu being the yang/fire/heat aligned half). Fou-lu is actually neutral at first; he ends up going to OmnicidalManiac thanks to having his girlfriend used as a Tactical Thermonuclear Curse Peasant in a deliberate attempt to kill him by the very empire he founded (which does ''not'' want to give up its regency to him).]]
* In ''VideoGame/FinalFantasyIVTheAfterYears'', this happens with [[spoiler: Kain. The part of him that is jealous of Cecil getting Rosa got his own body and stole the crystals in order to kill Cecil. The other half of him took on a disguise and went on as the Hooded Man to help out Ceodore.]]
* In ''Franchise/KingdomHearts'':
** Sora is split several times: Roxas is his Nobody born during the brief time Sora lost his heart, while [[spoiler:[[VideoGame/KingdomHearts358DaysOver2 Xion]]]] is made out of memories extracted from his mind.
** ''[[VideoGame/KingdomHeartsBirthBySleep Birth by Sleep]]'' goes the EnemyWithout route with [[spoiler: Ventus and Vanitas.]] They're eventually rejoined, with [[spoiler: Ven]] winning their fight for control over his heart, but [[spoiler: he's so weakened he has to merge his heart with Sora's to survive. This retroactively bumps the "people existing through Sora" count even higher.]]
** Xehanort has a very similar situation: [[spoiler:Master Xehanort gave up his body to possess Terra, and this created the current Xehanort with MX and Terra's hearts battling for dominance.]] Then Xehanort split himself into "[[TheHeartless Ansem]]" and [[EmptyShell Xemnas]]. Ansem [[spoiler:was born from Master Xehanort's heart]] while Xemnas [[spoiler:was born from Xehanort's mind and Terra's body]], and as a result [[spoiler:Ansem clearly takes after Master Xehanort while Xemnas has some fragments of Terra in him]]. With the way the ''Kingdom Hearts'' universe handles things, there could likely be even more incarnations of Xehanort out there with their own personalities and appearances, considering how many hearts and bodies he's gone through.
*** In ''VideoGame/KingdomHearts3DDreamDropDistance'', it is revealed that [[spoiler: there are 12 Xehanorts, 4 of which are the man himself as he was around the time he left his home, Xemnas, Ansem, and the reborn Master Xehanort, while the others contain part of Xehanort's heart.]]
* [[VisualNovel/{{Tsukihime}} Len]] had part of personality split into [[VideoGame/MeltyBlood White Len]] and then bolstered with magic (or something) giving her an evil twin of sorts. The most notable thing besides being, you know, evil, is that White Len speaks a great deal while Len has [[CuteMute only spoken two or three times in total.]]
* In the penultimate scene of ''VideoGame/PlanescapeTorment'', the Nameless protagonist meets some of his earlier incarnations in person - the [[RedemptionEqualsDeath good incarnation]], the [[TheChessMaster practical incarnation]], and the [[CrazySurvivalist paranoid]] incarnation.
* In ''VideoGame/SonicTheHedgehog2006'', two of the big villains of the game - Iblis, a mindlessly destructive fire demon, and Mephiles, a cunning, manipulative creature of darkness - are actually split aspects of Solaris, a god of light and time who "[[SpacetimeEater eats dimensions for lunch]]". Naturally, they recombine for the TrueFinalBoss of the game.
* Legends in ''VideoGame/PokemonBlackAndWhite'' say that there was a great dragon that two brothers used to protect Unova. But when the brothers began arguing with each other, the dragon split its yin into Zekrom and its yang into Reshiram, who would fight endlessly. It's also theorized that a third Pokémon, Kyurem, is ''what's left of the original dragon''. Which is probably why it looks so "incomplete".
** Confirmed in [[VideoGame/PokemonBlack2AndWhite2 the sequels]]: Kyurem is the EmptyShell of the original dragon, and its reason for hunting Pokemon and Trainers around Lacunosa Town is because it wants to fill the void. [[spoiler: Ghetsis uses a machine to painfully fuse it with N's dragon, which rebels.]]
* In ''VideoGame/MugenSouls'', the protagonist, Chou-Chou, is capable of splitting up her personality ''and'' how the personality looks like into ''eight'' different types which are [[AGodAmI Egocentric (default personality)]], [[TheDitz Natural]], [[GenkiGirl Vigour]], [[{{Jerkass}} Sadist]], [[YamatoNadeshiko Beauty]], {{Tsundere}}, [[TooKinkyToTorture Masochist]], and [[ElegantGothicLolita Cool]]. Unusual for this trope, this is also a ''game mechanic'' in which to convince enemies to become your slaves, you must be at an appropriate personality to [[MadeOfTemptation get them to join you]] so that they can power up your EnergyBall and your ship, the Gcastle.
* Cheryl Mason of ''VideoGame/SilentHill1''is really the innocent part of the dark and mysterious Alessa Gillespie's personality given a separate body. In the best ending, Cheryl's adoptive father receives a recombined form of Cheryl/Alessa who becomes Heather Mason, the protagonist of ''VideoGame/SilentHill3''.
* In ''VideoGame/TheElderScrollsIVOblivion Shivering Isles'' expansion, there is the town of [[MeaningfulName Split]]; an entire ''community'' made up of literally split personalities. Some explanation: The Shivering Isles is a literal Realm of Madness, which is split environmentally down the middle between two facets of madness: Mania and Dementia. One day, a wizard hypothesized that every person had both a Manic side and a Demented side to their mind, and, to test this, cast a spell on the town to divide all of its original residents into two separate beings. Unfortunately, everyone on either side detests their counterpart, so both sides each ask you, an outsider, to resolve the dilemma for them. [[spoiler:Sadly, there is no way to reunite the two sides and you can only "fix" things by completely wiping out one side for the other.]]
* In ''VideoGame/{{Disgaea 3|AbsenceOfJustice}}'' in Chapters 2 and 4 Mao have various [[ColorCodedCharacters palette-swapped Maos]] inside his own heart.
* Jason Stryker in the video game of ''Film/X2XMenUnited'', where his powers allow him to project an evil adult side and a good child side.
* The end of ''VideoGame/LightningReturnsFinalFantasyXIII'' reveals that Lumina is [[spoiler:actually the living embodiment of Lightning's repressed childhood emotions, which split off from her while Lightning was in crystal stasis]].
* ''VideoGame/HyruleWarriors'': At the midway point of the game, it's revealed that [[spoiler: Lana is the AnthropomorphicPersonification of [[BigBad Cia's]] good side, having split off from Cia when she was corrupted]].
* In ''VideoGame/ThreeDDotGameHeroes'', [[spoiler: Princess Iris is secretly split into three fairies, Ai, Lee, and Sue (Lee is your FairyCompanion for the adventure, Ai and Sue can be discovered in caves.]]
[[/folder]]

[[folder:Visual Novels]]
* [[spoiler:Chinatsu and Ojou]] in ''VisualNovel/{{Suika}}''. The former is the love and memories of the latter.
* [[spoiler:M and Baron]] in ''VisualNovel/ShikkokuNoSharnoth'', as part of Moriarty's experiment. Also, only one of them is ever treated like the character that was originally split.
* WordOfGod for the ''Franchise/WhenTheyCry'' series is that [[spoiler:[[VisualNovel/UminekoWhenTheyCry Bernkastel]] is a collection of [[VisualNovel/HigurashiWhenTheyCry Rika]]'s memories of all the Fragments where she died]].
* In ''VisualNovel/DramaticalMurder'', [[spoiler:Ren was originally part of Aoba's personality (his "restraint" facet, or his superego) but was forced to split from him and occupy his Allmate's dog-like body when the third facet of Aoba's personality (his "evil" side, or more accurately his id) threatened to overtake him completely. His consciousness then gets passed down to Sei's human body in the true ending so that he and Aoba can actually get romantically involved.]]
[[/folder]]

[[folder:Web Animation]]
* Test Tube ends up splitting Ying-Yang into his two split personalities in episode 3 of ''WebAnimation/InanimateInsanity II''. Yang ends up causing more harm to the group when he's split like this than when he is with Ying, and since StatusQuoIsGod, Ying and Yang end up coming back together as one by the end of the episode.
* Many WebAnimation/{{YouTube Poop}}s have [[Franchise/SuperMarioBros Luigi]] with split personalities, most often [[VideoGame/HotelMario Gay Luigi]] and [[WesternAnimation/SuperMarioBros Mama Luigi]]. [[Main/UptoEleven Heck, even the split personalities have split personalities]]. They've made a few encounters. In "Final Hours", ''all of his forms'' were together witnessing [[MayanDoomsday the end of the world]]. [[spoiler: However, the end didn't happen.]]
[[/folder]]

[[folder:Webcomics]]
* Spoofed with a duplication ray (the "Dupe-O-Matic") in ''Webcomic/{{Melonpool}}'' in which Ralph is first split to form his good twin Ralphie, then Ralph was split again to form his even eviler twin Fauntleroy so in essence Ralph was being distilled. Interestingly, Melonpool instead gets split into his usual moron self and a twin who is a genius.
** The Dupe-O-Matic is also used in a cross-over with ''Webcomic/ItsWalky!'' to duplicate Joyce, who already had a SplitPersonality, creating an EvilTwin who continued to have effects far down the plot.
* In ''Webcomic/TheAdventuresOfDrMcNinja'', when the good Doctor finds himself at death's doorway, his soul splits into two figures: his rational, scientific side, dressed in a doctor's scrubs; and his HotBlooded, justice-obsessed side, dressed in full {{ninja}} garb. Both sides have to cooperate to... ''persuade'' TheGrimReaper to allow [=McNinja=] to live.
** In the "Army Of One" arc, there is a sort of inversion, where the doctor has a bunch of clones of him made, they all go to college for eight years, taking different degrees, and then merge ''back'' into the original McNinja, which justifies his [[OmnidisciplinaryScientist vast scientific knowledge]] and also helps explain some things in past stories (how he has a UniversalDriversLicense, why he occasionally argues with his InnerMonologue, etc).
* ''Webcomic/TheNonAdventuresOfWonderella'' featured "Orgy Biv's Chromasplitter", which divided Wonderella into her two most dominate personalities: Passive and Aggressive.
* Sollux Captor from ''Webcomic/{{Homestuck}}'' is a semi-example: he's got two "dream selves" (most main characters have only one dream self: a duplicate who lives in a tower in AnotherDimension and which they temporarily become when they go to sleep.) Each dream self apparently accounts for one of the two sides of his bipolar personality, so when one of his dream selves dies, he goes from manic-depressive to just permanently depressive.
** Theoretically all character's dreamselves should qualify, but Jade is the only other character who actually shows a major difference in personality between her dream and waking selves. Her dream self is goofier and more impulsive than her waking self. [[spoiler:And is [[UnwantedRevival a blubbering pansy when brought back from the dead]] as Jadesprite.]]
** Dave and [[spoiler:Davesprite]] also reflect this to a lesser extent. [[spoiler:The latter went through a BadFuture in which he lost two of his friends and had to face down an inevitable death.]] As a result he's not as [[TheStoic stoic]] as Dave.
** Heroes of Heart rule over an Aspect governing the self and identity. Their myth arc often involve "a journey of splintered self." [[spoiler:Dirk has this in spades between himself and his auto-responder. Ironically, he doesn't have it with his dream self, since he runs both bodies at once with the same mind.]]
* In ''Webcomic/AtArmsLength'', Ally spent most of the "Splitting Hares" arc divided into two versions of herself, one loyally staying by her husband Peter's side while they other half commits to her friends Sheila and Reece. Both claimed to be the "true" Ally and fought it out, each accusing the other of being inferior and making irresponsible choices. [[spoiler:It took the threat of being erased from existence due to the instability of the split to get them to put aside their differences and come together again]].
* The titular character of ''WebComic/{{Jix}}'' has [[SplitPersonality multiple personalities]]; in one arc she was cloned and her "Remula" personality was seemingly transferred to the clone. Unfortunately it turned out that the device only copied her.
* While rendered incomprehensible for a good stretch of the series, Haley from ''Webcomic/TheOrderOfTheStick'' often got into arguments within herself, with mental versions of herself that represented fragments of her psyche. Her self-loathing was usually the one she spoke with, but she sometimes met with other parts of her, such as her optimism, her vanity, her mistrust, her latent bisexuality, and [[BreakingTheFourthWall the new side of her that's sick of the emo stuff and wants to get back to comedy.]]
* In [[http://dresdencodak.com/2006/05/17/anagoge-starring-tiny-carl-jung/ this]] ''DresdenCodak'' strip, Kimiko suddenly, somehow has a red-coloured, extroverted copy of herself split off from her. Extrovert Kimiko then proceeds to run off with the guy that Introvert Kimiko was spying on.
* ''Webcomic/TheWotch'': In the 2003 "[=SchizophrANNEia=]" arc, Anne tries to fulfill multiple commitments by using a spell to make identical copies of herself. Turns out that each copy represents a different emotion, and furthermore each new copy diminishes the original incrementally. Needless to say much HilarityEnsues before Anne is finally able to pull herself together.
[[/folder]]

[[folder:Web Originals]]
* The ''Bandwidth Theatre'' episode [[http://apocrypha.badgods.com/posts/microsoftsplit "Microsoft: The Verdict"]] sees an antitrust judge order Microsoft split into its good and evil sides. The use of the classic transporter sound effect makes this a ShoutOut to [[Series/StarTrekTheOriginalSeries "The Enemy Within"]], which for many is the archetypal example.
* Chad/Chaddy/Merry/Mai/Paige/Petra of the Literature/WhateleyUniverse. Currently in three parts: Paige, Petra, and Chaddy. Paige is at Whateley, Petra is in Italy, and Chaddy is running around in Sara's head.
* In the ''Roleplay/GlobalGuardiansPBEMUniverse'', Prezma ("Prism" in Russian) is a superheroine with diagnosed [[SplitPersonality Multiple Personality Disorder]]. Normally, she has no actual super powers until she splits into seven individual bodies (one for each of her known personalities, and each matching a color in the visible spectrum). After she splits, each of her bodies has a different set of super powers based on the color they represent.
* In ''[[WebVideo/LukeMochrieAndTheInners Film Conscience]]'', Luke Mochrie uses Phillip, his [[TheCynic Inner Pessimist]], and Ringo, his [[TheIdealist Inner Optimist]], to point out the good and the bad qualities of a film being reviewed. Sometimes, he'll even have other Inners pop in every once in a while to show their perspective along with Phillip and Ringo.
[[/folder]]

[[folder:Western Animation]]
* Raven in ''WesternAnimation/TeenTitans''. Not only did she occasionally split into lots of different personalities, their cloaks were even [[ColorCodedCharacters color-coded for the viewer's convenience]]. Revisited in ''WesternAnimation/TeenTitansGo'' when she is accidentally split apart into 5 different personalities via a gem.
* Omi from ''WesternAnimation/XiaolinShowdown'' did this when he used the Ring of the Nine Dragons in Season One. He is the current page image.
** Jack does this too. Unlike Omi, he seems to be able to split himself into alter-versions without losing his rather eccentric "genius", instead making rather unusual duplicates of himself (including a donkey-man hybrid); granted, he does this so he can play four-on-four basketball with himself while he referees the game, but still...
* ''WesternAnimation/AladdinTheSeries'':
** Genie had an episode dedicated to this, where he was split into seven parts of his personality.
** As did Aladdin himself: in another episode his logical head was split from his emotional body.
* Near the end of the first season of ''WesternAnimation/JackieChanAdventures'', the Tiger Talisman splits Jackie into yin (good) and yang (bad) sides. Good Jackie is too pacifistic to fight the {{Mooks}}, and Bad Jackie sees nothing wrong with joining them for money, until Good Jackie points out that that means he won't get to fight anymore.
* ''WesternAnimation/DarkwingDuck''
** In the episode "Negaduck", the eponymous crimefighter is split into good and evil sides, which are later enhanced into super-good and super-evil sides. (Bizarrely, this is ''not'' the origin of the villain called [[MirrorUniverse Negaduck]].) Apparently, either the fans or the writers liked ''this'' Negaduck so much that they sought to bring him back; a MirrorUniverse evil Darkwing called Negaduck that acted just like the first Negaduck is how they did it.
** Later something similar would happen to Gosalyn in "The Frequency Fiends," leaving the original unaffected but creating three superpowered duplicates with single personality traits.
* [[TheStarscream Starscream]]'s clones in ''WesternAnimation/TransformersAnimated'' all embody an aspect of their creator, although he doesn't have to give up anything to create them. They represent his arrogance (Thundercracker), sycophancy (that is, kiss-ass-iness, Sunstorm), deception (compulsive lying, Ramjet), and cowardice (Skywarp), along with [[OppositeSexClone a female clone]], Slipstream, who tells Starscream [[YouDoNotWantToKnow not to ask what she represents]].
** ExpandedUniverse clones include Dirge (greed), Thrust (envy), and "Clone Black" (his lack of originality? Basically, he's an all-black toy with no bio - not even a name. He's ''probably'' Skywarp without the full color scheme so the clear plastic he's made of looks that much cooler, but until something official ''calls'' him that, he's not Skywarp, he's just... there).
* An even better example from ''Transformers'' is the [[Franchise/TransformersGeneration1 G1]] Combiners, like the Constructicons' Devastator, the Combaticons' Bruticus, and the Predacons' Predaking--inverted because the separated parts are the originals, but then they combine into one giant robot that has the combined mind of the five/six/seven components. With the bad guys, this tends to mean they destroy everything; the good guys protect everything. Usually. The Technobots' Computron has a problem with thinking things out too much and sometimes gets beaten by the primal-instinct Decepticons. The questionably-canonical explanation is that the combined form only has the traits all five have in common, hence urge to smash other side being about all there is to them. Predaking is the sole exception to the hulk-smashiness of combiners because the Predacons work together just that well.
** There's another case of splitting among the Transformers: In ''WesternAnimation/BeastMachines,'' Megatron's organic and machine sides are split between [[spoiler: the new Maximal, Noble, and his base. Noble has a JekyllAndHyde thing going, but it turns out that's ''all'' Megs stringing the Maximals along and he has full control of both forms.]]
* In ''WesternAnimation/DannyPhantom'', Danny tries to use a ghost dreamcatcher to split his ghost half from his human half. It works about as well as you'd expect. Fun Danny (the human half) was, well, fun-loving, but kind of apathetic, while Super Danny (the ghost half) was obsessed with crime fighting, but reigning the boyscoutness attitude. They tried to fix it by going through the dreamcatcher again, but this just divides their powers amongst each other. It's revealed they went through the 'split' side twice, and at the end of the episode they finally go through the 'merge' side, which sets everything right.
** A case of a similar bit of AppliedPhlebotinum having wildly different results: in "[[TheMovie The Ultimate Enemy]]", after seeing all his friends and family blown up in front of his eyes, Danny goes to Vlad, the regular series' BigBad, and asks him to "make the pain go away." Vlad agrees, and they decide to rip out Danny's humanity. This splits Danny into a ghost half and a human half, like the example above; this time, though, the ghost half is [[PsychoForHire completely insane]] and [[AxCrazy very violent]]. We don't really get to find out what the human half was like, because before we get a chance to get to know that Danny, the ghost Danny splits Vlad into ghost-Vlad and human-Vlad, and fuses with the ghost-Vlad; this amalgamation of ghostly badness then turns on human-Danny, and brutally murders him so gruesomely that human-Vlad, a decade later, is unwilling to talk about it. ...[[WhatDoYouMeanItsForKids Sounds nice, huh?]]
* One episode of ''WesternAnimation/WorldOfQuest'' had the title character split into pacifistic Good Quest who irritated the Questers with his talking about group hugs and sociopathic Evil Quest who turned Lord Spite into his butler. Upon recombining, Quest declared that he hated the good him.
* In an episode of ''WesternAnimation/CaptainPlanetAndThePlaneteers'', Dr. Blight develops a device that creates evil clones of whatever is put in it. The villains capture and clone all of the Planeteer rings to create pollution-causing counterparts (Super Radiation, Deforestation, Smog, Toxics, and Hate). Just like Captain Planet is formed from the power of the Planeteer's five rings, Dr. Blight's rings combine to form Captain Pollution.
* Spoofed in an episode of ''WesternAnimation/TheRenAndStimpyShow''. Ren gets split in two, but instead of getting split into a good and evil side, he gets split into an evil side, and an ''indifferent'' side. Later, Evil Ren tries to clone himself, but only gets split again into Evil Ren, and ''Hideously'' Evil Ren. Who, for some reason, [[OppositeSexClone is female]]. [[ScrewYourself And the two evil Rens fell in love]] [[UnholyMatrimony and promptly got married.]]
* Happens in ''WesternAnimation/BountyHamster''. An AppliedPhlebotinum machine able to separate things into their component parts, gets used on Marion creating [[Disney/SnowWhiteAndTheSevenDwarfs an assortment]] of copies based on various aspects of his personality.
* In season 3 of ''[[WesternAnimation/JusticeLeague Justice League Unlimited]]'', it's revealed that the Shadow Thief is the dark side of Hawkman's mind given physical form.
* In the episode called "The Good, The Bad, and the Johnny" of ''WesternAnimation/JohnnyTest'', Susan and Mary split Johnny into his good side and his bad side. Good Johnny acted really annoying and sweet. Bad Johnny kept on doing bad stuff and got much stronger.
* Jimmy from ''WesternAnimation/TheAdventuresOfJimmyNeutronBoyGenius'' splits himself into [[http://images.wikia.com/jimmyneutron/images/f/f7/Jimmy%27sClones.png several copies]] of himself in order to try and get his chores done faster. They all adopted one personality (and took it to the extreme, mind you). The "evil" one appears in later episodes, too.
* In ''WesternAnimation/PhineasAndFerb'', Candace gets split into her two strongest emotions: Her desire to bust her brothers, and her crush on Jeremy.
* In one episode of the ''WesternAnimation/{{Beetlejuice}}'' cartoon, BJ gets so mad about being stiffed on a reward for breaking up a WildTeenParty on Halloween night, he [[VisualPun literally becomes "beside himself"]], splitting into a good side (an easy-going LovableCoward with a fondness for bad puns) and an evil side (a crude, slovenly prankster).
* In the ''WesternAnimation/BatmanTheBraveAndTheBold'' episode "A Bat Divided!", a nuclear accident splits Batman into the three sides of his personality: an intellectual scientific detective, [[DarkAge an angry bruiser]]... and a laid-back, nacho-munching slacker. Apparently, it's Slacker Batman's heart that allows the other two conflicting sides of his personality to work together.
* ''WesternAnimation/TinyToonAdventures'' had a short where Babs' sense of humor was accidentally removed from her body, so while the humor side was borderline insane and ran around causing trouble, Babs was turned into a rather dull geek. Cute all sorts of [[HilarityEnsues wacky hijinx]] as Hamton and Calamity try to merge the two halves back together before sundown, when the separation would become permanent.
* In the MissingEpisode of ''WesternAnimation/DextersLaboratory'', "Rude Removal", Dexter's latest invention causes Dexter and Dee-Dee to split into nice and rude halves. The nice versions are friendly and speak with British accents while the rude versions swear and speak in tough east-side accents.
* Happens to Gemma in the ''WesternAnimation/{{Dogstar}}'' episode "Twice the Excitement", with one embodying all of Gemma's positive personality traits, and the other all of her negative traits. And neither can throw a rock with the skill that the original Gemma possessed.
* In the ''Series/MonstersVsAliens'' series, Dr. Cockroach's teleportation device splits him in two: [[MadScientist his serious "scientist" half and his hard-partying "mad" half.]]
* ''WesternAnimation/FamilyGuy'' had an episode in which Stewie created a clone of his evil side (a failed attempt to enhance his own evilness).
* In ''WesternAnimation/ThePenguinsOfMadagascar'' Marlene, who was raised in captivity, [[JekyllAndHyde turns into a feral form]] when she leaves the boundaries of the zoo. In the episode "Littlefoot" Kowalski attempts to get rid of her feral side, but it ends up taking on a life of its own.
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