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->'''Jackie:''' Use my chi for the transfusion.\\
'''Jade:''' [''gives Jackie an "Uncle smack"''] I do not know such spells! Jade has Uncle's ''[[LifeEnergy chi]]'', not his ''brains!''
-->-- ''WesternAnimation/JackieChanAdventures'', "Chi of the Vampire"

A variation on the traditional FreakyFridayFlip plot, wherein two characters ''don't'' swap bodies, but they do swap personalities and temperament. The key difference being that things such as intellect, skills, and abilities don't alter.

As it isn't a mind swap you don't get to play with the GenderBender or BlackLikeMe and similar tropes; also unlike in a FreakyFridayFlip the voices (even in animation) don't [[VoicesAreMental switch]]. However, you can draw humor from making one character act like his exact opposite. This can lead to things like 50-year-old men acting like teenage girls, or the usually bookish teacher's pet suddenly becoming a rebel.

The reason for this change can be GreenRocks, AppliedPhlebotinum but frequently even some naturally occurring non-fantastic explanation such as AcquiredSituationalNarcissism, a [[ClothesMakeTheManiac changing of clothes]], habits, jobs or maybe TheMindIsAPlaythingOfTheBody. This can also overlap with OOCIsSeriousBusiness, if a dramatic situation, for example, makes a calm character angry and an angry character calm.

See also: FreakyFridayFlip, InAnotherMansShoes, SoulFragment, and NotHimself.


[[folder: Anime & Manga]]
* One confusing episode of ''Anime/MartianSuccessorNadesico'' centered around several of the characters' minds being linked together by the enemy robots (or something like that). While they were connected, they were unable to consciously control their own bodies, which were then taken over by their suppressed personality traits. It led to ActionGirl Ryoko cowering in fear, MsExposition Inez refusing to explain things, and eternal sadsack Jun [[CrowningMomentOfFunny grabbing a machine gun and running around in search of things to shoot.]]
* Parodied in the FourthWallMailSlot in one volume of ''Manga/{{Eyeshield 21}}'' - A reader asks what would happen if [[SociopathicHero Hiruma]] and [[TeamMom Mamori]] switched personalities. They come to the conclusion it's best the way it is.
* ''Webcomic/AxisPowersHetalia'' has [[StraightMan Germany]] and [[TheDitz Italy]] try and act like each other in one comic.
* ''Manga/MariaHolic'' has Matsurika use SleepLearning to change Kanako from a giddy, rambling idiot into someone closer to a ClassRepresentative. To Mariya's surprise, while Kanako's personality is much more stubborn, her [[LovableSexManiac perversions]] haven't changed a bit.
* The third episode of ''Anime/MakaiSenkiDisgaea'' has Etna and Flonne exchanging everything but their actual identity. This includes their clothes.
* This actually ''is'' involved with a FreakyFridayFlip in ''Manga/TheWorldGodOnlyKnows''. [[spoiler:Yui and Keima]] switch bodies but otherwise act like their normal selves...until later in the arc when they begin assuming the personality of the other person when [[spoiler:Keima gets flustered by close physical contact with his own body like Yui did not long before and Yui starts picking up on masculine pronouns and things.]] Things go back to normal before the situation can degenerate any further, however. The implication is that [[spoiler:the runaway spirit over time would have basically [[TheMindIsAPlaythingOfTheBody modeled them into the bodies they possessed]] in an attempt to gain its resurrection.]]
* One chapter of ''Manga/PokemonSpecial'' had Red and Green accidentally trading their teams. Because of the contrasting personalities of the trainers, the Pokémon had to adjust: Red teaches Green's Pokémon to be more laid-back and relaxed, while Green trains Red's team into battle-hardened warriors. By the time they switched back at the end of the chapter, neither trainer is amused at the results (Red had to ''run for his life'' from his Pokémon, and Green is weirded out by his team having mellowed out). It's also plot-relevant, since the trading sequence allowed Green to evolve his Machoke into Machamp, and a previously recalcitrant Porygon now ''snuggling'' up to him.
* An episode of ''Anime/{{Pecola}}'' has Coco, Rudy, and Bongo switch personalities with one another after Chewy's cleaning vacuum malfunctions.

[[folder: Comic Books]]
* In ''Comicbook/TheFlash and Comicbook/GreenLantern: Fast Friends'', Wally West and Kyle Rayner swap costumes and memories, each being convinced they're the other and unable to understand why their powers don't work. It's suggested the personality swap is only superficial, and they still have their real ones beneath it; so Kyle-as-Wally is capable of an insight only Kyle would make, but frames it as "Now, if I were an artist, I'd say..." However it works, it gives them a better understanding of each other and is the beginning of them going from genuinely not getting on to being VitriolicBestBuds.

* In the early {{Crossover}} fanfic-turned-novelette, ''[[Series/DoctorWho The Doctor]] and [[Series/StarTrek the Enterprise]]'', Spock and the Doctor take on some of each others' habits and body language after their mind-meld. Seeing the Fourth Doctor use Spock's finger-steepling gesture and Spock struggling not to crack a Tom Baker grin seriously creeps Kirk out.
* The rather goofy ''[[http://www.fanfiction.net/s/8087542/1/Shermys_Revenge Shermy's Revenge]]'' features Shermy of ''ComicStrip/{{Peanuts}}'' using a personality-swapping device called the "Personalitifier" (which, by the way, was invented by [[ComicStrip/CalvinAndHobbes Calvin]]) in a rather misguided effort to shed his [[TheGenericGuy Generic Guy]] status.
* The foundational trope upon which FanFic/DividedRainbow is based. Played for very serious, often tearjerking drama... though it still has many moments of awesomeness and humor.

[[folder:Films -- Live-Action]]
%%* ''Film/YoungFrankenstein''. Done in part and deliberately.
* At the end of the Creator/LaurelAndHardy short ''Thicker Than Water'', after a botched blood transfusion, the two have swapped to each other's mannerisms (as well as hairstyle, and Hardy's mustache).
-->'''Laurel:''' It's another fine mess you've gotten us into, Ollie!
* In ''Film/ThreeWomen'', Pinky and Millie are switching personalities two third into the movie. There is [[MindScrew no explanation]] given as to why.


* The 2nd part of the ''Franchise/StarTrek'' audio book ''Spock VS Q'' has this befall the titular characters after a casual handshake. [[HilarityEnsues Utter hilarity ensues.]]
* Happened in one ''Literature/LabyrinthsOfEcho'' {{flashback}}-sequel when Max needed to get some self-control very quick and Shurf Lonli-Lokli with his current LawfulStupid personality keeping his old ChaoticStupid personality down wanted some rest. So when Max said that "it would be cool to get into your skin", Shurf, as the biggest BadassBookworm around, knew an old spell doing this. The Exchange of Ulviar, or Candle of Fittekh exchanges "Shadows" -- no one yet managed to articulately explain what these are, but they can be contacted and manipulated and this spell effectively swaps the participants' personalities and talents. It got two names after the inventors and first known users, an ancient elven king and his court healer. The legend said that Ulviar got Healer's call and Fittekh got ambitions and enough of political talents to halfway organize a coup before the spell's duration ended, leaving the king with new respect to his healer's altruism and the healer impressed by self-restraint of his king who normally didn't act as HotBlooded as was inclined.

[[folder:Live-Action TV]]
* Happens in an episode of ''Series/{{Seinfeld}}'' to Jerry and Kramer when they switch apartments.
** Also happens in another episode where, by withholding from sex, George becomes smart and successful and Elaine suffers a severe drop in intelligence from having a lot.
* An episode of ''Series/SabrinaTheTeenageWitch'' has this happen to Zelda and Hilda who willingly purchase some pairs of magical "Walk in my Moccasins" to get a better perspective on each other.
** Also happened, thanks to sunspots, with Sabrina and Libby. However, they did not act ''exactly'' like each other -- Libby went from being the AlphaBitch to a FriendToAllLivingThings, and Sabrina went from being her normal self to militaristic would be EvilOverlord with plans to TakeOverTheWorld (with a little prodding from Salem).
*** Done again during Sabrina's time at Scorch magazine, when she tries to make notoriously unpleasant rapper Baby B 2 K "like her" as in, enjoy her company, and Baby ends up "like her" as in, personality-wise. Baby ends up baking the paparazzi pecan sandies, and Sabrina takes on a jerk neighbor in small claims court.
* On ''Series/TheOfficeUS'', CFO David Wallace was always level-headed, as opposed to needy, off-putting Michael Scott. However, when Michael clashes with the company's new owners he looks to David Wallace for help, only to find Wallace (laid off after the merger) day-drunk and desperate for companionship. For once Michael is the one put out.
* On ''Series/NewsRadio'', meek man-child Matthew becomes the office jerk after he asserts himself to Bill (by punching his lights out), who in turn takes Matthew's place as the meek one. [[StatusQuoIsGod The status quo]] is restored when Bill, trying to defend Matthew, accidentally slaps him in the face, causing Matthew to snap out of his power trip.
* In a later episode of ''Series/SesameStreet,'' Oscar and Telly get three wishes between them. Telly wishes Oscar would be a nice person, and Oscar wishes Telly would be a grouch... and this briefly happens. Then the person who gave out the wishes reverses those two.
* Also on ''Series/SesameStreet'', in episode 720, Ernie imagines [[http://www.youtube.com/watch?v=5tet721PTCQ switching personalities with Bert.]]
* ''Series/SpaceCases'': An "experiment" by Miss Davenport causes the kids to "change identities"; they don't swap bodies but species, along with the accompanying abilities and powers. Since TheMindIsAPlaythingOfTheBody, turning [[HumansAreBastards human]] turns the normally quiet Radu into a take-charge leader (but unable to handle leadership), Bova turns into a Mercurian and becomes "cheery, bright, and sunny," and Rosie turns into a Uranus-ian(?) and becomes the GrumpyBear.
* In the ''Series/StarTrekTheNextGeneration'' episode "Transfigurations" Dr. Crusher finds that to save a shuttle crash victim she needed someone to volunteer a neural link to help regulate their brain functions. Geordi volunteers and because the individual was undergoing a type of [[AscendToAHigherPlaneOfExistence Ascending to a Higher Plane of Existence]] transformation the leftover impression gave Geordi an amazing boost in confidence especially with romantic pursuits.
** Similarly, in "Sarek" Picard mind-melds with Sarek, giving the aging Vulcan his emotional strength, while receiving the consequences of Sarek's Vulcan Alzheimer's, so that Sarek can complete a diplomatic negotiation.
* In ''Series/QuantumLeap'', a freak accident switches Sam and Al's roles, with Al now trapped in time and Sam as a computer projection finding advice and information. The switch also makes Al more virtuous and Sam more lecherous, confounding them both.
* On ''Series/ThirtyRock'', when Liz gets a job hosting her own talk show, it gives her AcquiredSituationalNarcissism and she starts acting like a delusional diva... in other words, like Jenna. Meanwhile, Frank is promoted to show runner on TGS and starts acting (and looking!) like Liz.
** Played with once, when Tracy became a movie producer and was forced into Liz's role of having to contain a crazy actor. Unfortunately, being Tracy, he botches it horribly.
* Happened a few times on ''Series/HomeImprovement''. Every so often Tim would shift character positions with someone else as they act more impulsive like Tim would normally.
** When Wilson was thinking of moving back to where he used to live with his (now deceased) wife because her memory was fading, they actually swapped sides of the fence as Tim gave him advice on how to remember departed loved ones.
** Later, when Wilson felt alienated from the rest of the guys because of his constant hoity-toity intellectualizing, Tim again has to be the one to dispense wisdom.
** When Al took on as a guest host for a cooking show and Tim took up as a dedicated assistant, Al ended up being arrogant and refused the practical advice Tim would give.
** In one episode, Jill was the one who ruined something of Tim's, rather than vice-versa, and had to find a way to make it right by the end of the episode.
In an episodeof ''Series/WelcomeBackKotter'', Kotter and Mr. Woodman switch jobs. Mr. Woodman becomes a fun guy who dresses up in costume for class, and Kotter becomes more like Mr. Woodman was.

* Salieri's opera ''La Grotta di Trofonio'' involves around this. Two sisters (one extroverted, one bookish) are both engaged to be married to men with matching characters. But when the men enter Trofonio's cavern, their personalities are swapped over. In the second act they manage to work out what's happened and swap back, but at the same time the girls decide to make their own visit to the cavern...

[[folder:Video Games]]
* Apparently, one of the plans in ''VideoGame/CrashTwinsanity'' was to make it so that when they go to the [[{{BizarroWorld}} Tenth Dimension]], Crash and Cortex switch personalities, unfortunately, this was removed from the game.

[[folder:Web Original]]
* WebVideo/ToddInTheShadows jokingly speculated, in his review of "Counting Stars" and "Demons", that Music/{{OneRepublic}} and Music/ImagineDragons had undergone one of these, only with musical talent instead of personality. This was one of the few explanations he could come up with as to why Imagine Dragons, a band that he normally likes, disappointed him with "Demons", which he felt sounded like a bad [=OneRepublic=] song, while [=OneRepublic=], a band that he finds to be [[SoOkayItsAverage crushingly mediocre]] on the best of days, pleasantly surprised him with "Counting Stars", which he felt sounded like it could've been one of Imagine Dragons' best songs.
* In The Recreation arc of ''Machinima/RedVsBlue'', [[ProfessionalButtKisser Simmons]], becoming more assertive in his role as the OnlySaneMan, becomes more openly critical of Sarge's warped orders and SkewedPriorities and is less eager to carry them out. Meanwhile, [[TheSlack Grif]] sees how keeping up the ForeverWar is easier, agrees with Sarge's self-destructive strategies so Red Team won't win against Caboose (The only Blue Team member around) and then possibly be shipped to a more difficult battlefield. This backfires on Grif, though;
-->'''Grif:''' Wait! You mean Simmons gets to hang out at the base while I go on a dangerous mission!?\\
'''Simmons:''' Thaaat's right. Enjoy the limelight, Private Kiss-Ass.


[[folder:Western Animation]]
* ''WesternAnimation/AmericanDad'': In "Rough Trade", Stan is sentenced to house arrest for driving drunk, and Roger sets out to prove he can be a provider. Roger becomes the family role model, Stan becomes the obnoxious drunk.
-->'''Stan:''' [[BorrowedCatchphrase Eeeeh. Preeeetty sure I asked for pecan sandies]].
* In Hey Arnold, there was an episode in which the class had an aptitude test. Helga, believed that she was dumb while Harold thought he was a genius. Of course, this was an error.
* In the ''WesternAnimation/JackieChanAdventures'' episode "Chi of the Vampire" a ChineseVampire absorbed several characters' [[LifeEnergy chi]]; which mean they needed 'chi transfusions'. This led to Tohru becoming like Jade, and Jade becoming like Uncle, providing the above quote.
* ''WesternAnimation/WhatsNewScoobyDoo'': In "A Terrifying Round with a Menacing Metallic Clown", a MonsterClown menaces the mini-golf tournament in which Shaggy is participating, threatening to cancel it. Shaggy's desire to win and Velma's [[WhyDidItHaveToBeSnakes coulrophobia]] cause them to swap their group dynamics, with Shaggy boldy leading the investigation while Velma hangs out with Scooby as far away from the clown as possible. It's not a complete swap, though.
-->'''Daphne:''' How about you, Velma? Would ''you'' do it for a Scooby Snack?\\
'''Velma:''' Please, I'm scared. Not desperate.
* One episode of ''WesternAnimation/TheSimpsons'' has Bart and Lisa swap social positions (if not total personalities) after a IneptAptitudeTest. Bart becomes the good student when he finds that his career path is in law enforcement and is given the Hall Monitor position. Lisa, finding her path to be as just a homemaker, starts acting out and hanging with the bad girls. Their personalities don't ''exactly'' switch, however: Bart basically becomes a justified thug while Lisa uses her intelligence to best effect when rebelling against everybody. The Status Quo gets restored when Bart takes the fall for Lisa's theft of the teachers' guides because even he recognizes that she has a better future than he does.
** A similar thing happened in another episode where the Simpsons got a pool and Bart ended up breaking his leg and had to be cooped up in the house all summer. Lisa became wildly popular with the other kids while Bart became bitter and reclusive. However, Lisa's popularity fades when Martin gets an even better pool, and the Status Quo is restored.
* Also happened on ''WesternAnimation/{{Daria}}'' once. After Quinn became reclusive and antisocial, Daria intentionally became fashionable and flighty to bring Quinn out of it. Episode title being Quinn the Brain.
* Done in the ''WesternAnimation/TotallySpies'' episode "Totally Switched". Clover's personality is swapped with Jerry's by use of a [[MadScientist crazy psychologist's]] [[AppliedPhlebotinum behavioral adjusting amulet]].
-->'''Clover:''' [[BritishStuffiness Oh... good heavens.]]\\
'''Jerry:''' [[TotallyRadical No freakin' way!!]]\\
'''Sam:''' O.. kay, this is the weirdest moment ever.
* In one episode of ''WesternAnimation/HarveyBirdmanAttorneyAtLaw'', X the Eliminator gets Birdman's crest and becomes successful and well-liked, while Birdman becomes an obsessive stalker (building a death ray console).
* ''WesternAnimation/MyLittlePonyAndFriends'': In "Mish Mash Melee," Gusty, Fizzy, Shady, and Wind Whistler stumble across the AppliedPhlebotinum that maintains "the balance of nature," and their personalities get switched around between them. Frizzy gets Wind Whistler's [[TheSpock logical personality]] and Wind Whistler gets her [[TheDitz ditzy, happy-go-lucky personality]], Shady gets Gusty's [[LeeroyJenkins brave and physical personality]] while Gusty got her [[LovableCoward cowardly personality.]]
* ''WesternAnimation/DragonTales'' did this to Zak and Wheezie in one episode via a magic statue. As they share the same body, the FreakyFriday plot wouldn't be an option anyway.
* In the ''WesternAnimation/KimPossible'' episode "Bad Boy", AppliedPhlebotinum causes {{Sidekick}} Ron to gradually become evil while MadScientist Drakken turns good.
** In the PostScriptSeason episode "Stop Team Go", the same AppliedPhlebotinum is now turned into a MirrorMoralityMachine and causes instant [[CharacterAlignment alignment]] switches. Team Go becomes evil and [[TheDragon Shego]] turns good to become Kim's best friend; The [[FoeYay KiGo]] [[LesYay shippers]] {{squee}} as their dreams almost become {{canon}}.
* ''WesternAnimation/{{Inhumanoids}}'' had Magnokor and Metlar switch alignment after the former boosted their magnetic powers through a [[GreenRocks boulder of galvacite]] to finally defeat their arch-enemy.
* The episode of ''WesternAnimation/TheRenAndStimpyShow'' entitled "Who's Stupid Now?" had Ren forced to be "the fat, stupid one" and Stimpy "the skinny jerk" thanks to [[AnimatedActors in-episode]] ExecutiveMeddling. Stimpy later gains intelligence on his own and becomes more abusive towards Ren.
* This happens in an episode of ''WesternAnimation/SpongeBobSquarePants'' where Squidward gets electrocuted by his electric fence [[LightningCanDoAnything and gets a personality similar to SpongeBob's]], and then at the end of the episode where [=SpongeBob=] gets electrified by the same fence and ends up with a personality like Squidward's.
* Even Franchise/WinnieThePooh [[http://www.youtube.com/watch?v=Phl8OqxpQ0o has done this]] -- more specifically, ''Happy Pooh Year'' (released together with ''Winnie the Pooh and Christmas Too'' as ''A Very Merry Pooh Year''), with the switch done in two pairs: Tigger and Piglet, and Pooh and Eeyore. Frankly, seeing the [[TheEeyore usually gloomy]] Eeyore acting like Pooh and [[http://static.tvtropes.org/pmwiki/pub/images/EeyoreCreepySmile.JPG grinning like a madman]] is... [[NightmareFuel/WesternAnimationTV disturbing]].
** Additionally, ''The New Adventures Of Winnie The Pooh'''s episode "Sham Pooh" features Pooh losing his appetite, causing the gang to suspect that he's not, in fact, Pooh. It is then determined that Owl is actually Pooh, Gopher is Owl, Piglet is Gopher, and Rabbit is Piglet. (Only Tigger remains himself, and he's also the one who's having the most fun watching everything unfold.) The characters act accordingly up until Pooh starts eating honey again. Interestingly, no one becomes Rabbit and Pooh doesn't become anyone.
* In an episode of ''Disney/TheLionKing'' spinoff ''WesternAnimation/TimonAndPumbaa'', the titular pair think they're going to die as a result of being stung by a deadly scorpion. During their "last day", the pair undergo a personality swap-the usually [[JerkAss selfish and greedy]] Timon gives away all his earthly possessions and finds joy in kindness and generosity, while the formerly [[NiceGuy kind-hearted]] Pumbaa becomes self-centered and vain, wanting to live it up before he goes out. Naturally, when it is revealed that death isn't imminent, the pair revert to their usual personalities.
* The ''WesternAnimation/EdEddNEddy'' episode "Mirror, Mirror on the Ed" has the Eds daring each other to act like another Ed. [[TheDitz Ed]] imitates Eddy ("I'll do anything for cash, 'cause I'm short."), [[TheSmartGuy Edd]] imitates Ed ("Gravy!"), and [[{{Schemer}} Eddy]] imitates Edd ("Oh, the insanitary! My skinny arms cannot bear the weight.")
* ''WesternAnimation/TimeSquad'' does this without a plot device at all- after a fierce argument, the fussy, cultured Larry and overly manly Buck cordon off the space station to avoid each other, only to realize that everything they like is on the other one's side of the station. So out of boredom, Buck starts learning gourmet cooking, while Larry is irresponsible with a {{BFG}}.
* ''WesternAnimation/PhineasAndFerb'' played with this in one episode. Everyone's roles and {{Catch Phrase}}s were shuffled around. Doofinshmirtz built a giant city (with Norm as the guy who sat around and occasionally spoke), while Vanessa (who underwent a ClothingSwitch with Candace to Lampshade the whole thing) tried to tell her mom. He even expected Perry to show up ("Hey, where's Perry the Platypus?"), but Perry was unable to get to Major Monogram because of a pet-cone. Meanwhile, Phineas built a machine that would spread a rainbow over [[LargeHam The Entire TRI-STATE AREA!!!]], only for Perry, who was unable to see past pet-cone, hit the [[ContractualGenreBlindness self-destruct button on it]]. He sneezes ("Bless you, Perry the Platypus!"), and Phineas removes the cone. Perry then rushes to the docks, where Doofenshmirtz's city has sunk (before Vanessa could get her mom there). Doof delivers the "Oh, there you are Perry The Platypus." and Candace and Vanessa meet up at a store, and presumably switch clothes offscreen.
* An episode of ''WesternAnimation/{{Rugrats}}'' uses a variation on ClothesMakeTheManiac. Whilst in the park, Chuckie and Angelica manage to switch shoes. Chuckie slowly becomes more bossy and condescending to poor Tommy, while Angelica mellows out and become afraid of everything. However, the whole ordeal turns out to be AllJustADream that Tommy had after hearing his dad comment "I'd hate to be in that guy's shoes," whereafter Angelica lied and said that if you put on someone else's shoes, you become that person.
* In the ''WesternAnimation/RatedAForAwesome'' episode "Merry-Go-Round of Doom", Thera and Chet experience this after riding on a super-fast merry-go-round; Thera becomes mean and nasty, and Chet becomes kind and charitable. Les and Lars also experience this during an attempt to put things right, and later, Les's dad and [[EverythingsBetterWithMonkeys Mr. Twitchy]].
* ''WesternAnimation/{{Arthur}}''. In "Buster's Best Behavior," Buster feels inferior because he doesn't really stand out among the crowd and decides to try and be more like someone he admires, namely Arthur. Meanwhile, Arthur feels Buster is the coolest kid in school and decides to try and be more like him. Soon, Buster is walking around in yellow sweaters, reading lots of books, and complaining about D.W., while Arthur is constantly snacking and reading joke books, causing the two to quickly become bored with one another. Brain refers to the phenomenon as "Element X," but both Francine and Muffy are driven crazy.
* ''WesternAnimation/DanVs'' "Anger Management": [[RevengeBeforeReason Dan]] and [[NiceGuy Chris]] are sent to anger management after one of Dan's revenge schemes. The anger management instructor, Amber, tells Chris that he doesn't express his anger enough. As a result, Chris becomes more and more expressive of his anger. While Dan slowly learns to relax. Unfortunately Amber realizes revenge feels good. So Dan becomes the ExtremeDoormat who helps his friend with their revenge in a similar vein to Chris. [[StatusQuoIsGod Though everything ends up going back to normal]].
* In ''WesternAnimation/{{Sixteen}}'''s [[Recap/SixteenS1E22EnterTheDragon "Enter the Dragon"]], Nikki and Caitlin essentially swap personalities [[AllPeriodsArePMS while on their periods]]: Nikki becomes an overly emotional FragileFlower and sheds many TenderTears, and also develops [[GirlsLoveChocolate a strong craving for chocolate]] (even though it's said that she hates chocolate); Caitlin starts acting [[HairTriggerTemper really bitchy]] [[DeadpanSnarker and cranky]] (Jen even goes so far as to say that, "[Caitlin makes] pit bulls look friendly"). However, it's unknown if Caitlin develops an aversion to chocolate when she gets her period.
* In episode 81 of ''WesternAnimation/{{Kaeloo}}'', Stumpy and Quack Quack [[MediumAwareness use animation software to change the episode's script]], they swap Kaeloo and Mr. Cat's personalities. This results in Mr. Cat becoming kind, friendly and cheerful, and Kaeloo becoming a short-tempered, sarcastic AxCrazy {{Jerkass}}.
* ''WesternAnimation/CatDog'': In "Cat Gone Bad", Cat joins a group of alley cats and starts shirking responsibilities. Meanwhile, Dog tries working hard and becomes responsible and mature like Cat used to be.