History Main / TwoBeingsOneBody

* DCU comic book character B'Wana Beast (and his LegacyCharacter, Freedom Beast) is a walking example of this trope, in that his [[SuperSerum magical African potion-induced]] super power was to fuse any two animals into one.
* ComicBook/{{Firestorm|DCComics}} was born when a student and his teacher were "fused" together in a nuclear accident. The two are able to merge and separate at will, though only Ronald Raymond, the student, has control over the Firestorm form, while Martin Stein, the teacher, only has a ghostly presence during a "fuse". Once the two separate again Stein doesn't even remember what happened while they were joined. Of course, they have no powers whatsoever while separated.
* One scary example of this trope is Madcoil, a monstrous fusion of sabertooth cat and giant black python. Created when lightning struck the patch of ground where the two were fighting -- ground which was permeated with leftover elven magic -- this misbegotten Mash-Up beast acted out its insatiable battle-fury on the elven and human tribes of ''ComicBook/{{Elfquest}}''. It fought with fangs, claws, constriction, and (for elves) the capacity to send maddening images of its own horrific "birth" directly into their receptive brains.
* ''ComicBook/LegionOfSuperHeroes'': The post-''ComicBook/ZeroHour'' version of Wildfire is the merged form of two minor characters, Blast-Off and Atom'X.
* In the dystopian future shown in the ''ComicBook/WildCATsWildStorm[=/=]ComicBook/{{Spawn}}'' crossover, Wild C.A.T.s foes The Troika (a human, a MagmaMan, and a KillerRobot) had been partially fused together.

* In Creator/GrantMorrison's ''ComicBook/DoomPatrol'', Rebis is a fusion of a man, a woman, and an immaterial being called the Negative Spirit.
* Ixis Naugus from ''ComicBook/SonicTheHedgehogArchieComics'' is the result of three Ixis Wizards (a Rhino, a Bat, and a Lobster) accidentally fusing into one being.

* The Matzoriley Brothers from ''WesternAnimation/TheSuperSix'' were Weft, Wight and Wong, a three-headed entity with a streak of rotten luck.

* Revolver Ocelot loses his arm in ''VideoGame/MetalGearSolid''. In ''VideoGame/MetalGearSolid2'', he's grafted on the arm of the dead Liquid Snake as a replacement. Liquid's spirit isn't one to give up so easily, and fights with Ocelot for control of his body.
** By ''VideoGame/MetalGearSolid4'' the personalities have reportedly merged to become "Liquid Ocelot" but it turns out that [[spoiler:Ocelot cut out Liquid's arm to prevent his spirit from manifesting itself again and then hypnotised himself into thinking he was still Liquid in order to fool the Patriots]].

** Some SMILE Zoan users, introduced in the Wano arc, have their animal forms fused with them while having minds all their own that aren't particularly cooperative. For instance, Holdem has a lion's head and arms growing from his stomach that have a tendency to attack him, forgetting that doing so would hurt it as well, and Dobon has an ''entire hippopotomus'' growing from his back, with himself permanently situated inside the hippo's mouth.

* ''Manga/BirdyTheMighty'' is about an alien police officer who accidentally killed an OrdinaryHighSchoolStudent when chasing criminals to Earth. She saved his life by fusing with his body, and they can switch forms via a TransformationSequence. This is kind of an exception to the typical transformation sequence, in that it does not cut away from the scene or involve music or fancy posing. It's more akin to a simple change of clothes, and is executed in a nonchalant fashion, most of the time. [[spoiler:This isn't the only case, as BigBad Christella Revi's backstory involved a failed version of this: Revi was originally born male and he was subjected to this in a failed attempt to save the life of a female SuperSoldier, hence why Revi is a woman now.]]

* [[spoiler:Luciela and Raphaela]] from ''Manga/{{Claymore}}'' ended up fused together in a vegetative state after the latter tried to squeeze the life out of the former. Riful finds them and tries to find a way to awaken them so she can recruit them. [[spoiler:[[GoneHorriblyRight She succeeds.]]]]
* In ''Franchise/{{Devilman}}'', the [[OurDemonsAreDifferent demons]] are shape-changing entities able to [[DemonicPossession possess human beings]] by biological mash-up (via {{teleportation}}). In some cases (as the main character), this possession happens to backfire: the human being "possesses" the demon and [[PowersViaPossession gains their powers]] but [[HeroicHost maintains his/her human identity]].
* This is the end result of Excel and Hyatt's FreakyFridayFlip experience in the final episode of ''Anime/ExcelSaga''; [[Creator/ShinichiWatanabe Nabeshin]] is called in to undo it.

* The entire premise of ''Manga/RiskySafety'' is that an angel and a demon are forced to share one body -- there's only room enough for one of them at a time; depending on the emotional state of the people around them, they may suddenly switch places. (Said switch is usually indicated by a sudden puff of smoke enveloping the one, and the other bursting out of it.)
* In ''Manga/SgtFrog'', Keroro and Giroro end up fused together due to a synchronized swimming routine. (It made a sort of comedic sense at the time.)
* Nero Chaos of ''VisualNovel/{{Tsukihime}}'' shares his consciousness with 666 beasts. His body [[spoiler:actually contained "chaos"]], and though he has melded with their minds, he can't actually control the mass very well. Beasts present includes the generic (dogs, wolves, a shark, elephant, crocodile...) and the mythical (a unicorn, some crab-spider thing...)
** Also the Seventh Scripture's spirit. It's the blend of a (willingly) sacrificed village girl and a dead unicorn's soul. The unicorn had less willpower and was more dead or something, but magically far far stronger, so she spent a while with the unicorn mostly dominant plus sleeping. By this point, she's basically the village girl from before but with weird traits like a horse's tail, hooves and strange ears.
* ''Manga/UruseiYatsura'' once had the teleporter trick with Ataru holding a ''notebook'', which made a copy of his with the notes written all over, and got him stuck in the notebook. Whenever you hit the thing, a paper-thin copy splits off, and Ataru starts selling them.
* [[ExtremeOmnivore Wapol]] from ''Manga/OnePiece'' is capable to swallowing multiple people and spitting them out as one, which he did with his minions Chess and Kuromarimo to create "Chessmarimo". Subverted, when Sanji points out that the only thing fused was their clothes, and one is standing on the others back.
** When a fan asked Oda what it would be like if Wapol fused all of the Straw Hats (which at this time went up to Robin), he replied it would create the creature [[https://static.tvtropes.org/pmwiki/pub/images/Gargon.png in this drawing]] which possessed Luffy's Straw Hat, Chopper's antlers, Nami's hair situated on its shoulders, Zoro's swords and haramaki, Sanji's eyebrow situated on top like a strand of hair, Robin's fringe, and Usopp's nose situated on its left shoulder and is named "Gargon".
** Some SMILE Zoan users, introduced in the Wano arc, have their animal forms fused with them while having minds all their own that aren't particularly cooperative. For instance, Holdem has a lion's head and arms growing from his stomach that have a tendency to attack him, forgetting that doing so would hurt it as well, and Dobon has an ''entire hippopotomus'' growing from his back, with himself permanently situated inside the hippo's mouth.
* ''Franchise/{{Pokemon}}'':
** The ''Manga/PokemonAdventures'' manga has Articuno, Zapdos, and Moltres fused into a single chimeric creature near the end of the ''Red and Blue'' arc. Thankfully, the protagonists save them.
** A Gastly in [[Anime/PokemonTheSeries the anime]] once imaged a fusion of Blastoise and Venusaur, calling it Venustoise.
* ''Manga/{{Naruto}}'': [[CreepyTwins Twin brothers]] Sakon and Ukon of the Sound Four have this as their main power, as the ability to [[ConjoinedTwins fuse their bodies with each other]] and letting them spring their body parts from any part of the host body. Their most powerful ability, however, is to fuse their body with an opponent and break down their cells one by one. Of course, the big problem with this is that they'll [[LogicalWeakness feel the pain and receive the injuries of whoever they fuse to]], so if [[MutualKill the host dies before the cell breakdown finishes or if they don't detach before that, they die too]]. Sakon usually takes the main body while Ukon acts as support, whether manifesting his limbs out of Sakon to intercept or launch attacks or outright leaving to launch a sneak attack. [[spoiler:This ends up leading to their deaths when Sakon is grievously injured and forces Ukon to take the main body so that he can rest up and heal. However, because Ukon is unused to being the main body, his movements are slightly slower and more prone to slip ups, which leads to him falling into Kankuro's trap which gets them both killed.]]
* In an early ''Manga/BattleAngelAlita'' storyline, the villainous cyborg PuppeteerParasite Makaku hijacks the gladiator Kinuba's power-body for its utility while getting a second head named [[MeaningfulName Boarhead]], a form of animal companion cyborg battle helper, until he eats it.
* In ''Manga/BloodBlockadeBattlefront'', Deldro Brody is Dog Hummer's blood. See, Aligura was (and is) in love with Deldro, but was also attracted to Dog... it didn't end well, as she extracted Brody's blood and put him in Hummer's body.
* In ''Manga/DemonSlayerKimetsuNoYaiba'', this turn out to be the case for [[spoiler:Daki and Gyutaro, both occupying Upper Rank Six position]]. Usually, the sister is the one in control, with the brother sleeping in the body. But when things get serious, he can come out out of her body, making them a BrotherSisterTeam. Despite their wildly different personalities and fighting styles, they're considered as one being. To truly kill them, both of their necks must be cut at the same time, else the other will just regenerate.
* In ''Manga/HoshinEngi'', the Maka Yonsho were originally a single monster who later split his power in four bodies, each with his own name, personality and Paopei. They can still turn back into a singular BlobMonster as a last resort transformation. Later in the series we see the Juttenkun member Hakutenkun, who resembles a dark-skinned, long-haired man and woman couple with conjointed limbs, seemingly having two bodies but a single mind.

* In the ''WesternAnimation/{{Futurama}}'' episode "Put Your Head On My Shoulders", Fry's body is critically damaged in an accident, and his head is temporarily grafted onto Amy's body while his own is being repaired. The situation is complicated by the fact that the two had been dating, but just before the accident Fry had been planning to break up with Amy.
* In ''WesternAnimation/MenInBlack: [[RecycledTheSeries The Series]]'', rogue agent Alpha is one of these in his every appearance, using a Cosmic Integrator to fuse body parts from various aliens to himself. He believes it "improves" him, but really it just makes it clear how [[AxCrazy nuts]] he is.
** Eventually ends up in a HoistByHisOwnPetard situation when [[spoiler: he adds an alien with limitless regenerative healing to his mix and all the aliens regrow their own bodies and separate from him]]

* And from the same producers as BLOSC, ''WesternAnimation/KimPossible'''s [=DNAmy=] does this to various critters as a central villain idiom, to duplicate her favorite plush toys, the hybridized "[[WesternAnimation/TheWuzzles Cuddle]] [[Toys/BeanieBabies Buddies]]."

* Cleveland and Quagmire get fused together after an accidental nuclear war brought on by the MillenniumBug in the ''WesternAnimation/FamilyGuy'' episode "Da Boom". Peter initially calls them "Clevmire", but Quagmire insists on "Quagland".
* In Coldstone's second appearance on ''WesternAnimation/{{Gargoyles}}'', he is {{retcon}}ned into being made from parts of three gargoyles that died in the attack on Castle Wyvern, which also causes him to get two [[SplitPersonality extra personalities]], one female and one evil.
** WordOfGod says it was the intention all along.
** It's an understandable mistake, given Coldstone's coloring. He's largely supposed to be seen exactly as Demona described him -- "cold stone brought to life" -- and thus should have been a shade of gray. However, the artists gave him the coloration of the personality that fanon now knows as Othello, making it seem like he's the only gargoyle from whom Coldstone is physically formed.

* In ''WesternAnimation/TheSecretSaturdays'' episode "Ghost in the Machine", the main character Zak ends up fusing with both Komodo (a Komodo dragon) and Fisk (a 'gorilla-cat') after discovering a government project created to produce cryptid super-soldiers.
* In the ''WesternAnimation/SouthPark'' episode "A Ladder to Heaven", Cartman accidentally drinks Kenny's ashes, and along with them his soul, with the result that Kenny ends up sharing Cartman's body, in a parody of ''Film/{{Star Trek III|The Search for Spock}}''.
** Also from South Park, there is [=ManBearPig=], the half-man, half-bear and [[TooManyHalves half-pig]] (sic) creature that Al Gore wants to warn the world about. He is completely cereal about the threat.
** Another episode a lot earlier when dentists think a giant half-squirrel half-chicken was the culprit of missing teeth and money.
* In the ''WesternAnimation/SpongeBobSquarePants'' episode "[=SquidBob=] [=TentaclePants=]," this happens to [=SpongeBob=] and Squidward. And later Mrs. Puff, Sandy, Patrick, Mr. Krabs, and Pearl.
* In the second ''[[WesternAnimation/TeenageMutantNinjaTurtles2003 Teenage Mutant Ninja Turtles]]'' series, two different members of the rogues gallery, Drako and the Ultimate Ninja, temporarily get merged together into a half-dragon, half-human body.
* The finale of the Terra StoryArc in ''WesternAnimation/TeenTitans2003'' involved the Titans facing a monster created by merging together three of the series' recurring villains, Cinderblock, Overload and Plasmus. They later benefited from a SnapBack.

* ''WesternAnimation/ToxicCrusaders''

* In the ''WesternAnimation/PhineasAndFerb'' episode "Canderemy", Candace and Jeremy are literally joined at the hip after being exposed to a stray shot from Dr. Doofenshmirtz's Combine-inator. Later, the doctor combines with his robot manservant Norm to become "Normenshmirtz", and at the end, the title characters get combined into a single ([[BodyHorror highly unnerving]]) entity. [[NightmareFuel That was horrifying!]]

** "WesternAnimation/TreehouseOfHorror II" has Mr. Burns' head being grafted onto Homer's shoulder after his own body is crushed by the robot that he previously put Homer's brain into.
** Later on in "Treehouse of Horror XV" a shrunken Homer regrows inside Burns' body with the former's face pushing up against the latter's skin.
** Later still in the "Treehouse of Horror XXIV" segment, "Dead and Shoulders", Bart's head is surgically attached to Lisa's body after Bart is decapitated during a day of flying his box kite in a fly zone near the Springfield airport. At the end of the segment, when Lisa gets decapitated at the sawmill, Bart's head is transferred to Selma's body while Lisa's is grafted onto Krusty's.

* The premise of famous BMovie ''The Thing with Two Heads''; a [[PoliticallyIncorrectVillain rich racist white man ]] attaches his head to an unwilling black inmate.

* One of the main villains in Gerry Anderson's ''{{Series/Terrahawks}}'' third season was the result of an alien, robotic pregancy. Due to a power failure during the delivery, instead of Cy-star giving birth to twins, what resulted was one being with two distinct personae; a female, sweet natured, lisping personality, and a male, psychotic German-accented personality. Since it had both genders, it was named It-Star.

** ''The Transformers'' introduced several two-headed monsters in the same year (1987). Though ''Monsterbot'' Doublecross is treated as one Autobot, his dragon mode's two heads act independently to the point where one head will not carry out tasks agreed to by the other. Two of the five ''Terrorcons'' are two-headed monsters, but operate in different ways. Hun-Grrr, the Terrorcon leader, is an off-white and magenta two-headed dragon whose heads speak in unison and act cooperatively -- unless "food" is involved. Sinnertwin is a yellow and blue ''orthrus'' -- a two-headed canine monster. Whether acting as a sentry or a shock trooper, his monster heads speak and attack indepedently of one another and sometimes argue.

* In ''Manga/SoulHunter'', the Maka Yonsho were originally a single monster who later split his power in four bodies, each with his own name, personality and Paopei. They can still turn back into a singular BlobMonster as a last resort transformation. Later in the series we see the Juttenkun member Hakutenkun, who resembles a dark-skinned, long-haired man and woman couple with conjointed limbs, seemingly having two bodies but a single mind.