O'Malley: Shut up, get out of my head!As a result of Functional Magic, Applied Phlebotinum, or something else, two characters end up sharing a body. This is distinct from Puppeteer Parasite and most cases of Demonic Possession in that the two characters are more or less equal partners here. The one whose body it is may claim seniority, but enforcing it is a different matter. Bonus points if the characters in question are diametrically opposed or just don't like each other much, in which case it becomes a form of Chained Heat. This can also be quite interesting if the two sharing a body are of opposite genders. May resemble Split Personality, but usually happens to characters who have already been well established separately and is almost always a temporary situation. If the characters battle for control of the body, this can share some features with Enemy Within; the key difference is that Enemy Within originates within its host, while the character Sharing a Body does not. Sometimes The Mirror Shows Your True Self, revealing the extra driver. Compare Two Beings, One Body, when two beings are physically combined. Also compare Symbiotic Possession.
Doc: Technically it's my head. But I don't mind sharing. Don't you remember that talk we had about sharing?
O'Malley: Shut up!
Doc: Technically it's my head. But I don't mind sharing. Don't you remember that talk we had about sharing?
O'Malley: Shut up!
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Anime and Manga
- In Pandora Hearts, Jack Vessalius shares the hero's body with him. Actually, it IS his body to begin with.
- In the anime/manga series Birdy the Mighty, an alien cop has her body used to contain the mind of a teenaged Earth boy she accidentally killed. Notably, the body changes appearance based on who's in control at the moment.
- Akito and Agito from Air Gear.
- Twin demons Astaroth and Astarte from Angel Sanctuary inhabit the same body. While one of them is in control, they have their respective gender's characteristics, and the other sibling takes on the form of a snake. When Astarte dies, she uses the last of her energy to transform into her snake form, leaving Astaroth the sole possessor of their body.
- The power of Marianne's Geass in Code Geass.
- Occurs in Sorcerer on the Rocks, apparently with such frequency that no one in the group is surprised by it anymore.
- Bleach: The fandom assumed for years that the Inner Hollow was a parasite living in Ichigo's soul, and seeing how he was formed from a Hollow fusing with Ichigo's soul in utero it's still technically true, although Ichigo has accepted him as being a part of himself.
- The "Yamis" from Yu-Gi-Oh!. Well, two of them. Yami Marik is less this and more a Superpowered Evil Side taking control. It also is sometimes not fully clear whether normal Bakura is still around or if Yami Bakura is putting on an act. At one point regular Marik starts sharing a body with Yami Bakura. That's possibly three minds in one body.
- In Yu-Gi-Oh!: Capsule Monsters, besides Yugi and Yami Yugi, there's Alexander the Great's good and evil halves. Said good half also shares a body with Solomon Muto briefly.
- Yu-Gi-Oh! GX also has Yubel, which is more along the lines of possession. At least, until Judai fuses their souls together so that her mind has a chance to heal. The long term implications are only hinted at.
- Briefly in the end of season 1 of K - in order to defeat the body-snatching Colorless King, Shiro goads him into trying to body-snatch him, and holds the Colorless King in his body - which is not his own, by the way - trying to keep the Colorless King's consciousness buried. He then walks into the middle of a fight between the Red and Blue Kings, and has the Red King obliterate his body - luckily, Shiro is immortal, but the Colorless King is not, so it works.
- A variety occurs in Kurau Phantom Memory, where Kurau carries her Rynax-pair within her body. Alas, her pair is unconscious from the trauma which separated them previously and it takes ten years for her to awaken. She gets her own body when she finally does.
- Digimon Tamers: The main three fuse with their partners, and share those bodies. For the most part, the humans are in control, though the Digimon are somehow still present.
- Digimon Frontier had five of the Digidestined forming Susanoomon, and all of them sharing that body.
- Piccolo from Dragon Ball Z, merging with Nail and Kami.
- The other fusions count as this, but again, the personalities of the fusees are merged into one mind along with the body.
- In The World God Only Knows, the powerful Goddesses and their hosts are an example of this, coupled with The Mirror Shows Your True Self.
- The Jinchuuriki of Naruto can be considered this.
- Dark/Daisuke and Krad/Satoshi are examples of this from D.N.Angel.
- Fullmetal Alchemist has Ling and Greed who share Ling's body and early on they continuously struggle for control. After a while they start to work together and the line between them becomes blurred.
- Sengoku Youko has Shakugan - who is actually Shakuyaku, a human girl and Kagan, a rock demon in one body. Unlike most examples, both are permanently stuck together and have an amicable relationship and have taken to referring to themselves as Shakugan as acceptance of their status.
- Yumekui Merry. The relationship between Dream Demons and their host varies from full-time Grand Theft Me (Landsborough), to more occasional Demonic Possession (Chain Noir and Chaser John Doe), to this trope (most notably Engi Threepiece).
- d'Eon de Beaumont and his sister, Lia de Beaumont from Le Chevalier d'Eon. They start out as siblings, but after Lia dies she takes over d'Eon's body with growing frequency. Gradually their personalities also begin to merge, until people find it hard to distinguish between them.
- Today's Cerberus title comes from the main character, Cerberus, having a human form shared by three personalities (presumably each of her heads). The personalities, Kuro, Shirogane, and Roze, can be swapped either at will or by pulling on Cerberus' tail. The dormant ones can also generally watch what's going on with the one in control.
- Nounai Poison Berry: The mind council members with Ichiko. Though, technically, it combines this with a case of Ghost in the Machine.
- The protagonist in Parasyte shares his body with the eponymous alien parasite, who is trapped inside his right arm.
- DC comics character Firestorm is in fact two people who combine to form the superhero and share one body while doing so.
- Marvel's The Mighty Thor seems to do this post-Ragnarok with Donald Blake, as they often converse, and seem to swap off depending on the scenario at hand.
- In The Metabarons, Steelhead shares his body with Krleza the poet. Implanting Krleza's head creates a composite personality that they name Melmoth. Melmoth refers to himself as "I/we," and combines Steelhead's warrior ethos and skills with Krleza's poetic genius and ability to love. Of course, since Steelhead is a Metabaron, this does not end well at all.
- X-Men foe Johnny Dee is a baseline human who shares his body with his conjoined mutant twin. Johnny despises his brother's existence since he had to go through life with a horrible tentacle face in his chest, but has no qualms about using his brother's powers to manipulate and kill the people around him.
- The first issue of Superior Spider-Man reveals that Peter Parker, thought to have died in The Amazing Spider-Man #700, is still alive, albeit trapped in his own subconsciousness (Doctor Octopus is in control of his body).
- Deadpool Annual #1 reveals that the White Text Boxes that Deadpool used to converse with were actually a case of this - he and Madcap were disintegrated by Thor and their ashes piled together, so when their Healing Factors kicked in they fused together, Deadpool was steering, but Madcap still had a say in their actions. Eventually they manage to separate again.
- IDW's Judge Dredd comics featured a long-thought-dead evil Psi Division judge (Thompson) who implanted his mind into the body of another judge (Myers). Myers isn't aware of Thompson's consciousness inside of him, but he experiences periodic blackouts during which time Thompson takes control and does his crooked judge thing. After Dredd uncovers his secret, Thompson is taken in and given the death penalty... but not before the innocent Myers' mind is transferred into a robotic body (temporarily, one hopes).
- The version of The Morrigan in The Wicked + The Divine is actually a composition of the default Macha, violent Badb, and gentle Anand (Gentle Annie).
- Captain America's series around the time of Marvel's Civil War event had Red Skull assassinated by Aleksander Lukin, a former Soviet general. Due to shenanigan with a weak Cosmic Cube Red Skull possessed, an attempt at Grand Theft Me became this trope instead, made all the worse for both because of their fierce ideological opposition to the other.
- In Technotise Edit I Ja, Edit has to share her body with Edi, the consciousness of the sentient memory chip inside her.
- Points Of Familiarity: The Well of Souls consists of every human that was alive at the moment of Third Impact. However, it is (hilariously) represented by the people closest to Shinji in life.
- Thousand Shinji: As a result of Third Impact and their ascension to godhood, the bodies of Shinji, Asuka, Rei and Misato are formed by the Well of Souls, an amalgam of the souls of all humans that got harvested during Instrumentality. It is complicated because their souls are part of the amalgamation -although they are fully in charge of it-, and the mass of souls shapes their individual bodies, but it is STILL a single merged mass of billions of humans manifesting itself as four different bodies.
- Became a plot point in DC Nation. The Titans had recovered a Empty Shell clone of Tula (Aquagirl I), and one of Tempest's spells misfired, causing her and Tempest to be...sharing quarters. It led to some tense moments as well as some Power Perversion Potential (After all, Garth was divorced, Tula was willing, and the pair never stopped loving one another). Aphrodite thought the situation was cute, and intervened to put Tula into a body of her own so the two lovegirds could get it on properly.
- In the Pony POV Series, the "Discorded" version of Fluttershy created by Discord remains after his defeat as a seperate entity inside her named Fluttercruel. While at first Fluttershy does want to be rid of her and Fluttercruel wants to take over, Fluttershy quickly realizes Fluttercruel doesn't know any better than what Discord created her to be. So Fluttershy decides to first teach her to be nicer and then coexist peacefully. Eventually the two have sharing a body down and work off one another in some situations to get the job done when neither of them could on their own.
- After the Final Battle with Princess Gaia, Celestia outright says it'd do more harm to separate them now, as they need each other so much by then. She uses some magic to give them the ability to switch places, Fluttershy's body taking on Fluttercruel's appearance when she's in control.
- The protagonist in Be Careful What You Wish For leaves behind a fragment of his soul inside Ukyo during the pen-ultimate chapter. The intent was to use it to defeat the Demon after he'd ripped it out of Akane's possessed body and leave a message for everyone.
- In the sequel, A Careless Wish, Ukyo slowly realises the voice inside her head is actually a piece of the protagonist's soul, and that she's NOT going crazy.
- Furthermore, once Kanna becomes human via an infusion of a soul-fragment it is revealed that not only does she have her own soul, but something similar had happened in the past to the newest dimensional traveller, leaving three spiritual advisers floating about, until Ukyo dies.
- In the sequel, A Careless Wish, Ukyo slowly realises the voice inside her head is actually a piece of the protagonist's soul, and that she's NOT going crazy.
- Becoming Ponies has this as a primary plot device.
- In the Naruto fanfic Two Moons, Deidara's soul ends up taking residence in the back of Itachi's head during a coma. Itachi doesn't realize he's there, and Deidara... isn't very happy with the situation.
- In Diaries of a Madman, elementals take hosts by putting a small piece of themselves inside another.
- Ichigo and Kaien in The World In Black And White. Given that the former is a Hollow in the fic in question, this makes Kaien his 'inner shinigami'.
Films — Animated
Films — Live-Action
- The Steve Martin film All of Me has his character accidentally sharing his body with a Rich Bitch played by Lily Tomlin.
- The movie The Thing With Two Heads has a bigoted white man's head grafted onto a black man's body, leading to Chained Heat hijinx as they battle for control.
- The plot of Being John Malkovich is based on this.
- In Heart and Souls Robert Downey, Jr.'s character must play temporary host to four ghosts to allow them complete the unfinished tasks that will allow them to move on.
- In the film Shorts, Toby's mom and dad end up sharing a body after the mom makes the wish that they would be "closer together. Really close."
- Star Trek III: The Search for Spock reveals that while Spock's body is dead, his mind is sharing digs in McCoy's brain. You'd think there'd be a lot of Chained Heat but they play it classier than that.
- In Man With the Screaming Brain, Cole and Yegor share Cole's body after Yegor's Psycho Ex-Girlfriend Tatoya murders Yegor and nearly does the same to Cole. A Mad Scientist repaired Cole's brain with the dead Yegor's brain tissue — the end result is mostly Cole with Yegor riding shotgun and giving him advice. In the end the two adjust to their bizarre situation and become good friends.
- Good Omens: Mistaken for a demon, the angel Aziraphale is exorcised (sort of) and bounces from body to body as he tries to make his way back to England — first ending up in the body of an Aboriginal Australian boy, then a Haitian witch doctor, then an American televangelist, and, finally, to Madame Tracy, a medium (and Painted Jezebel). They have a cup of tea and calmly discuss the situation while Aziraphale is still in Madame Tracy's head.
- Robert A. Heinlein's I Will Fear No Evil (with the complication that it is left ambiguous whether Eunice's mind actually remains present after Johann's brain is transplanted into her body, or whether Johann is experiencing a sustained daelusion to that effect).
- Cassie and Aldrea in Animorphs #34. Controllers (Yeerks and their hosts).
- Mostly it's Puppeteer Parasite, but Yeerk Peace Movement pairs like Mr.Tidwell and Illim count.
- Vree the assassin does this with both her brother and her enemy (fortunately for her, not at the same time) in Tanya Huff's Fifth Quarter and No Quarter. Not just a plot point, here—it's more or less the central conceit.
- The sixth Apprentice Adept novel, Unicorn Point, has the magic-based world of Phaze and the science-based Photon merge, resulting in 99% of the population of both worlds sharing bodies with their otherworld counterparts. Most humans (excepting those who hadn't been on Photon for long enough) had direct doppelgangers to merge with, while non-humans (werewolves, vampires, robots) merged with their closest counterparts. Seriously.
- The same thing happens at the end of the third book, though only long enough to wrap up a few plot points.
- Rand Al'Thor and Lews Therin Telamon in The Wheel of Time series, with the latter mostly gibbering inside the former's brain. He does end up teaching Rand a bit on how to use his Geometric Magic and gives him some memories about his opponents however, and in the end it turns out that he was Rand's Split Personality. The memories and magic he showed him were real, but were just bleeding over from his past life. The voice and personality Rand was talking was just his own insanity.
- This is the entire premise of The Host.
- "Concepts" in Perry Rhodan were this trope for a while — a number of human minds (typically seven when first introduced) jointly occupying a single body, which originally belonged to one of them. The canonical and, among fans, probably best-known example is Kershyll Vanne, a former elite intelligence agent teamed up with six experts in their own disciplines in this fashion to undertake missions for the Sufficiently Advanced Alien who came up with the idea.
- While Cormac Bennett of the Kitty Norville series is spending time in prison, he picks up a passenger in the form of Lady Amelia Parker, the ghost of a victorian wizardess and adventurer who was executed for a murder she didn't commit. While there's some struggle at first, the two eventually form a partnership, and at times seem almost like a married couple. Who happen to live in the same body.
- In the obscure SF novel Black Star Rising, a scientist now nicknamed Manyhead nearly died of brain damage that was treated by transplanting part of a dead boy's brain as a replacement for what he lost. When asked his name, he gave it, then a breath later gave the name of the dead boy. Once their initial confusion wore off, they found that they enjoyed each other's company, and that their pooled knowledge improved the quality of their scientific work. When the story begins, they've had so many transplants that they had to undergo experimental cranium-enlargement surgery to fit all of them in.
- Matthew and the angels in A Madness of Angels... though they seem to be fused so thoroughly that it's debatable whether they count as more than one personality anymore. The only evidence of a distinction between them is that the first-person narration switches constantly between singular and plural pronouns (sometimes in the same sentence), which confuses the heck out of the other characters when it slips into his/their dialogue.
- Ghosts in the Incarnations of Immortality series can share bodies with the living, as can the Incarnation of War. Two characters who die and become ghosts during the course of the series spend most of the seventh book sharing a body with a living girl.
- At the end of Please Don't Eat the Teacher, a boy named Will and a dinosaur he met while time-traveling end up like this. The dinosaur is in love with a girl who went time-traveling with Will, but Will is weirdly okay with this, and so is the girl. They do seem to be fusing, though.
- Fallen Angels have this as their shtick in the Dresdenverse. The Knights of the Cross were formed for the express purpose of helping the host exorcise the demon. Harry becomes the first person known to have auto-excorcized one of those Fallen Angels.
- Done rather darkly for a young adults series in Gone where nice Christian immortal girl Britney ends up sharing a body with psychotic killer Drake. They both completely hate their time together and eventually Britney has a Face–Heel Turn and gains the same goals as Drake, although not all his crazy.
- Professor Quirrell and Lord Voldemort did this during Harry Potter's first year of Hogwarts.
- Near the end of Redeeming The Lost, Marik is coerced into dying and consenting to let his soul be joined with the Demonlord, a human who lost his soul ages ago. Instead of sending him "screaming into madness", the Demonlord realizes that they're akin and chooses to listen and learn from him, and they both hate the summoner who brought them to this point, so they seem to coexist harmoniously enough. It's portrayed in an interesting way by the first-person narration. Sometimes they are "we", but there's an I-Marik and and I-Demonlord who remember or want things, though they are both aware of each other's all.
- What's Left of Me by Kat Zhang has this as its premise: two souls, two separate people, are born into each body until the recessive soul "fades". Those who don't, like our protagonists, are sent in for treatment.
- Inverted by Miss Level in the Discworld novel A Hat Full of Sky, who is one person spread across two identical bodies and capable of managing both independently across considerable distances.
- Lock In: Integrators are people who suffered a mild enough case of Haden's Syndrome to not be locked in to their bodies, but severe enough to have gotten the brain alterations that let an implanted neural network work. They can make a pretty good living by letting Hadens "borrow" their bodies for a while.
- In Neogicia, the protagonist wakes up from her Bio-Augmentation procedure with second level of consciousness that seems to have emerged to prevent sensory overload. In the second novel, it turns out to be an pre-existing entity that took advantage of the procedure to move in and can take control if needed.
- Stargate SG-1:
- The Tok'ra alternate control of the body between the host and the symbiote. Best not to think about the sex.
- The Goa'uld, being the same species, are also capable of this, but they never willingly give control to the host. On at least on occasion, a very young Goa'uld has difficulty controlling a strong-willed host.
- An episode had the personalities of a dozen Human Aliens written into Daniel's brain by a desperate survivor, whose son was among those personalities. Michael Shanks gets to show off his acting skills by spontaneously switching between Daniel, a scared child, an obnoxious aristocrat, and many others. This can be seen the first time he "switches" from a crying and cowering child to the aristocrat, suddenly straightening, raising his head, and putting a look of utter contempt on his face with his voice dropping a few octaves.
- In the Stargate Atlantis episode "Duet", Lt. Laura Cadman and Dr. Rodney McKay are both beamed up by a harvesting Wraith dart before it is shot down. Something went wrong with the rematerialization process (it's alien technology they've never had to deal with, after all), causing both Rodney and Cadman's minds to end up inside McKay's body. Hilarity Ensues.
- In Kamen Rider Den-O, protagonist Ryotaro is occasionally taken over by his Imagin partners - often because they lack a physical form in the real world and possessing him is the only way they can stretch their legs. There are other times when he allows them to possess him, most often when he enters battle, since without their abilities Den-O is pretty well useless (at least until he gets Liner Form).
- Kamen Rider Double's whole gimmick is this, even referring to himself as the Two-in-One Detective. Double consists of Shotaro's body transformed, with his mind controlling the left half and his partner Philip's mind leaping over and controlling the right. Except when they use FangJoker Form, which uses Philip's body but retains the basic arrangement otherwise. Double's Super Mode, CycloneJoker Xtreme, involves both their bodies merging via technology.
- In Buffy the Vampire Slayer, Glory, an immortal god from another dimension and Big Bad of Season 5 shares a body with Ben, a human doctor-in-training. In this case, each identity takes on his/her proper form when in control, and has no memory of the other's actions. This separation breaks down toward the end of the season.
- Star Trek: Voyager:
- At least one episode of had the holographic Doctor "hide out" in Seven of Nine's body, allowing him to discover the joys of food and Jeri Ryan to ham it up without mercy.
- Another episode had Seven's mind being temporarily taken over by the personalities of other people assimilated by the Borg due to a malfunctioning Borg device in the area. Among the personalities she got to play with this time, there was a Starfleet officer from Wolf 359, a Klingon warrior who attempted to initiate courtship rituals with B'Elanna, a Ferengi who tried to buy Voyager, a scared child and a Vulcan ambassador. She certainly seemed to be enjoying herself in that one.
- In one episode of Wizards of Waverly Place Harper and Alex end up sharing Alex's body
- An artifact from Warehouse 13 can force two people into sharing a body, although the body changes shape to reflect the mind that's in charge. The entire ordeal is hard to control, doesn't last long, and ends poorly if it's not reversed.
- In the Star Trek: The Original Series episode "Return to Tomorrow", Spock's consciousness is seemingly destroyed while his body is hijacked by a disembodied alien consciousness. Once the alien is convinced to leave, Spock's body drops dead — and then he gets up, fully himself, and explains that he was temporarily sharing a brain with Nurse Chapel (who smiles and blushes and makes eyes at him for the remainder of the episode).
- Happens on Pair of Kings when Mikayla ends up sharing Brady's body with Brady and Lanny with Boomer. Ironically Lanny still wants them dead (or at least off the island) even while sharing Boomer's Body.
- In season 3 of Once Upon a Time, Rumplestiltskin absorbed his son Bae into his own body to save his life. The juxtaposition of two minds caused Rumple to act the most insane he's ever been, which is quite a feat.
- The Trill, prominently featured in Star Trek: Deep Space Nine can be joined with a "symbiont", resulting in a single personality that shares the memories of both individuals. Once the host dies, the symbiont takes the memories and experiences it's learned and moves on to the next host. Unlike most examples, it's portrayed as safe and mutually beneficial, with lots of Trills wanting to be joined. In fact, it eventually is revealed that the process is even safer than advertised; the Trill government maintains the fiction that extensive compatibility tests are needed because there are far too few symbionts available to join with all the would-be hosts. The fear is that if it were known how easy a joining actually is, there would be far more attempts to steal symbionts.
- Like his comic book counterpart, Firestorm in The Flash (2014) is the result of Ronnie Raymond and Professor Martin Stein merging into one person under the influence of both the particle accelerator explosion and Stein's experiments into transmutation. The combination also gives Firestorm his flaming abilities. Initially, the two personalities are in constant struggle, unsure of what's happening. After being finally separated thanks to the tachyon generator, they learn to re-merge at will, properly this time, and work in concert.
- The Outer Limits (1995) episode "The Vessel" has a writer go up into space on a shuttle. However, something happens and the shuttle crashes on landing, only for the writer to walk out unharmed. He starts getting strange visions and eventually finds out that there is a non-corporeal alien in his body, whose own spacecraft was destroyed near Earth and whose attempts to enter the writer resulted in the shuttle's destruction. With the government realizing something is up, they perform experiments on the writer and find out that having two beings on one body will eventually prove fatal. The alien seemingly agrees to sacrifice itself by giving the scientists instructions on killing him to save the writer. It appears to work, and the writer is set free. However, one of the scientists then wonders if they killed the right being. This is confirmed when the "writer" goes to his son's grave and tells the "boy" that his father was very brave with a flashback revealing that it was the writer who chose to give up his life to save the alien.
- In Grimm this is apparently perfectly normal for Huntha Lami Muuaji, a Wesen based on flatworms (which are, of course, hermaphrodites), who can shift from male to female, and have two personalities to match, only one of which is dominant at a time. When Nick stops a Huntha Lami Muuaji by giving him a Mode Lock, the Wesen is less concerned with the loss of his powers than the loss of his "other half".
Religion And Mythology
- Common feature in some religions, specifically non-Christian faiths that do not automatically attribute mediumship or the existence of a Physical God, among other things, to demonic possession. Arguably, in a case of irony and of its more fundamentalist partisans not doing the research, Christianity itself possibly even provided an example with its claim that Jesus is God incarnate. Therefore, Jesus would have been a case of Sharing a Body note according to it - as would Christians claiming to have accepted him into their hearts.
- Prophets/apostles as well, who are believed to be "inspired" by God when writing the Bible. The rule is that it's either God acting within a person, or something else, and if it's something else, it's usually evil.
- Most animist or spiritualist religions and mythologies are generally open to the idea of this happening.
- Channelers and spiritual mediums believe this is a part of Real Life paranormal ability. Others, obviously, would beg to differ and consider it a form of dissociative disorder or of outright fakery.
- In a less "established" example than more traditional channelers or mediums, soulbonders. Unfortunately even less respected and more likely to be mocked or considered insane than channelers and mediums, especially if their soulbond is a fictional archetype or still living.
- In Killer7, our Nominal Hero Garcian has many different souls of People he has killed trapped in his body including an American Cowboy Cop, a petty thief, a Japanese Cold Sniper, a Luchador, and Two beings who are God and Satan... probably. Naturally this begins to drive him insane after a while, but the whole game is a Mind Screw anyway so it is up to interpretation.
- Nippon Ichi game Soul Nomad & the World Eaters has the protagonist fused with the malevolent soul of Gig, the Omnicidal Maniac Big Bad that led the World Eaters on a bit of a genocide 200 years before the game began. Although the main character is mostly in control, Gig isn't willing to go down without a fight and offers the Protagonist his immense powers at various points in the game (at one point offering to boost your level by 2000 so you can easily wipe out the Final Boss at a very early stage), but doing so allows him to completely take over the hero's body: a sure-fire way to reach a Nonstandard Game Over.
- Liquid Snake shares Revolver Ocelot's body in Metal Gear Solid 2: Sons of Liberty, living on through his severed arm. In MGS 4, they've apparently integrated into one personality known as "Liquid Ocelot". While this may or may not have been the case in the second game (It is part of the "maybe magic, maybe mundane" aspect of the series), Ocelot had Liquid's arm removed and used hypnosis and nanites to fake a split personality merge to fool the Patriots in the fourth game.
- In the fan comic The Last Days of FOXHOUND, Big Boss shares a body with Liquid, briefly taking over the body entirely.
- Fire Emblem: Radiant Dawn has Micaiah and Yune.
- Emil and his Superpowered Evil Side Ratatosk from Tales of Symphonia: Dawn of the New World, at one point Ratatosk hijacks Emil's body after saving him... for about the billionth time.
- In Valkyrie Profile 2 Silmeria, the Valkyrie is reincarnated in the body of a human princess named Alicia as punishment for defying the will of Lord Odin.
- Sora of Kingdom Hearts is sharing a body with Ventus, and has been since he was a young child. Said person doesn't ever use the body, for some reason—Sora's more than nice enough to lend it, too. There's at least one other person in there, maybe two, but they're more properly split personalities.
- Sora is the series' favorite victim of this trope: He also unknowingly shared his body with Kairi for most of the first game, resulting in him having visions of her all the time. Also, Riku shared his body with Xehanort at one point, but the two of them were constantly (and often successfully) trying to suppress the other, so that usually only one personality showed for a long time, before the other popped up again.
- As of Birth By Sleep and 358/2 Days, Sora is sharing his body with not one, but three different (probably dormant) "individuals". For Roxas, Ven, Xion and (possibly) even Vanitas, inside of Sora's head is Home Sweet Home. Prison. Something.
- One interpretation for a character in Vampire: The Masquerade – Bloodlines. No way to tell for sure with a Malkavian, but the circumstances of her/their turning could have permitted it.
- Sam & Max share the body of a Frankenstein's monster in the game Night of the Raving Dead, though, being Heterosexual Life-Partners, the worst argument they have is about who made a better quip.
- In Ratchet & Clank: Quest For Booty Rusty Pete betrays Ratchet and resurrects Captain Slag by sticking his severed head in Captain Darkwater's headless body. However, Darkwater's "cursed spirit" still inhabited the body and awoke along with Captain Slag leading to this trope. Did we mention that it was Slag who killed Darkwater to usurp his position? Needless to say, Hilarity Ensues.
- Iris from Princess Waltz.
- Early on in Devil Summoner: Soul Hackers, your friend Hitomi ends up getting possessed by a demon named Nemissa. Unlike most cases of this in the Shin Megami Tensei series, Hitomi is fully conscious and able to talk while being possessed, and while the two argue a bunch early on, they eventually learn to cooperate outside of battle and can use the body together.
- Kresnik and Mari, as well as Amane, Jezebel, and Remiel in Devil Survivor.
- The Prince's dark ego in Prince of Persia: The Two Thrones, given voice by the Sands infection, which leads the Prince to debate his morality with it over the course of the story. At times the Dark Prince gains control of the Prince's body as well (morphing into a sand-monster with charred skin, burning eyes and a 3-meter razor chain for breaking necks, platforming and some fancy "hurricane of blades" combat moves). At the end of the game the Dark Prince claims the Prince owes him everything for all his "help" and proceeds to take it, which leads to them duking it out in the Prince's mind. In the end the Prince bests him by refusing to acknowledge his existence.
- NiGHTS Into Dreams: NiGHTS and his sibling Reala have the ability to "dualize" with Visitors, which enables them to fly freely in the Nightmaren's form.
- This is the premise of Rune Factory Oceans; the protagonists, Aden and Sonja, wind up trapped in the same (Aden's) body and remain that way until Sonja's body is recovered toward the end of the game.
- In Xenogears Grahf took control over Khan Wong's body (Fei's father), but he couldn't completely control it, so sometimes Khan would be in control disguised as Wiseman.
- Big Bad Zanza and Shulk share the same body in Xenoblade. The two split shortly after The Reveal.
- Pretty much the whole gimmick of Clive Barker's Jericho.
- The character "Platinum the Trinity" in Blazblue has Sena and Luna in one body. And the spirit of one of the Six Heroes, Trinity Glassfield.
- Cliana Rimskaya from Super Robot Wars Destiny looks like she's having a Split Personality problem. In truth, her body is storing two souls, a gentle girl (Chris) and a tough girl (Liana), due to being experimented. Unlike most examples, both personalities work in tandem and accept each other as family members within Rim.
- In the Sith Inquisitor's storyline of Star Wars: The Old Republic, the body of your servant/pet beast Khem'Val is invaded by the consciousness of your own Evil Mentor Darth Zash when the latter turns on you and Khem'Val Takes the Bullet. Naturally, the two are less than happy about this arrangement and keep wrangling for control of the body throughout the remaining storyline.
- In Jade Empire, one of your companions is a young girl, who is technically dead but her body is being keps alive by the presence of two spirits: one good and one evil (good needs to be balanced by evil and vice versa). Your actions will determine which spirit rises to dominance.
- A major reveal in Baten Kaitos Origins is that Sagi isn't a Spiriter but actually a "Maladeiter", an artificial Spiriter created by bonding a piece of an ancient Mad God to a human being (and you, the player, are the Mad God). Eventually in the game you and Sagi discuss who should ultimately have the one body and he leaves it up to you to decide him (which continues the game) or you (which triggers a Non-Standard Game Over).
- In Kid Icarus: Uprising, Pit briefly takes over Magnus' body as a ring at the end of chapter 18, "The Ring of Chaos." They can speak to each other, resulting in some banter, however control over Magnus' body isn't split; only Pit can control it.
- Originally, the cyborg commando bounty hunter DoytHaban from Schlock Mercenary, a violent idiot (Doyt) with a high-grade AI embedded in his spinal column providing him with precision weapons control (Haban). Haban was eventually given additional control over Doyt's body, the pair were duplicated, Doyt was shot out of one of the copies (Haban survived), and DoytHaban was (presumably) destroyed by the Government Conspiracy.
- At one point, there were (briefly) three separate characters who acted like this: DoytHaban, Massey Reynstein (the company lawyer with a partial cybernetic connection to the Partnership Collective Hive Mind), and the AI Ennesby (whose "body-of-sorts" was taken over by another AI, the mind of the warship Sword of Inevitable Justice). Lampshade Hanging ensued.
- Laz'r'us Nanobots seem to be able to do this, as does Schlock's 'memory reboot', and Petey does it to a number of the Toughs when he tries to undo the mindwipe they got from the UNS. It's debatable whether the fleetmind counts.
- Anna and Susan from Sire are a pair of Jekyll & Hyde personalities which share a body. The other appears as an incorporeal spirit who can communicate with the other. Some pages are dedicated to the finer features of this share like how the spirit version can stand on ground or how eating effects them both.
- In Homestuck, Cherubs Calliope and Caliborn are like this, at least when first introduced. However, Caliborn became the dominant personality, effectively "killing" Calliope. To defeat Lord English (who Caliborn eventually became), the protagonists have to find Calliope's soul and wake her up.
- In Eerie Cuties Blair ends up sharing Ace's body after his doll body is destroyed.
- O'Malley and Doc in Red vs. Blue, as quoted above. O'malley, an evil AI, usually takes over people's bodies via their radios. However, when he infected Doc, it seems that he couldn't completely suppress the pacifist medic's personality. O'Malley has control over the body, but Doc is free to speak. This results in frequent Gollum-Sméagol-like conversations as Doc tries to change O'Malley's evil ways and O'Malley tries to get Doc to shut the hell up.
Church: So, Doc. I see you're still swimming around in that head somewhere.Doc: Well, it's not the ideal situation, but every relationship need mutual trust and -O'Malley: We're not in a relationship! I'm simply using your body to fulfill my evil plans. When I'm through, I'm going to throw your rotting carcass into the swamp and let the beasts feed on your entrails! Mwa ha ha ha!Doc: 'sniff' I love you too, buddy!O'Malley: Oh, shut up!
- In the Global Guardians Verse the Tarot-employed supervillain known as "The Lover" is in fact two people who combine to form the supervillain, and share one body while doing so.
- There is also a Chinese superhero called "The Seven Brothers" who is actually a group of seven brothers who combine into one body to act as a superhero. He's essentially a Flying Brick while combined.
- In Dragon Ball Z Abridged, unlike the source material, this trope is played fully straight after Piccolo and Nail fuse; Nail sticks around as a voice in Piccolo's head. He's soon joined by Kami, when he and Piccolo fuse during the Cell Saga.
- Cartman and Kenny for a few episodes of South Park after Cartman drank Kenny's ashes under the mistaken impression that it was chocolate milk mix.
- In the Justice League Unlimited episode "Divided We Fall", it's discovered that since an early episode of Superman: The Animated Series, evil AI Brainiac has been inside Lex Luthor's body, eventually growing to the point where he has as much control of Lex's body as him. Even Flash points out how disturbing the Body Horror Brainiac creates is. As if the sight was enough Nightmare Fuel for you, the combination of Brainiac's abilities and Luthor's creativity is even worse!
- In the Pac-Man and the Ghostly Adventures episode "Nobody Knows", the Ghost Gang accidentally inhabit the same body when they try to acquire theirs from the repository. The experience is not only uncomfortable but so weird that they have to pretend that they are not sharing a body when confronting other ghosts.
- Early in its run, Steven Universe introduces the idea of fusion, where two Gems can combine their physical forms into one via a dance. The episode "Alone Together" explores the experience of being fused when the titular Steven accidentally fuses with his friend Connie.
Stevonnie: Alright, two donuts! One for me, and one for...me...Are you okay? We can stop if you want. No it's fine.Later:Stevonnie: (sad) I wish you were here. If we were together, it would be okay. But we are together, and it's not. I'm alone.