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16[[quoteright:350:[[Film/TheFly1986 https://static.tvtropes.org/pmwiki/pub/images/seth_flytransformation.png]]]]
17[[caption-width-right:350:"Sheesh, Brundle, you're looking different today. [[DidYouGetANewHaircut New haircut]]?"]]
18
19Something's starting to happen to one of our characters - [[VirusVictimSymptoms Maybe he's been infected with some]] [[TheVirus virus]]... [[WickedWitch maybe some witch had gave him a]] {{curse}}... [[MadnessMakeover maybe he's going]] [[SanitySlippage crazy]]... [[ArsonMurderandJaywalking or maybe he's just]] [[Webcomic/CyanideAndHappiness gaining weight]]. Whatever it is, it's usually not directly explained, and we don't see him changing on-screen...
20
21It's just that one day, he looks a little bit... off.
22
23And each time we see him after that, the change is a little more noticeable, usually until it reaches either [[RefugeInAudacity hilarious]] or [[BodyHorror horrific]] levels.
24
25As mentioned above, this is nearly always either PlayedForLaughs, or PlayedForDrama as TransformationHorror.
26
27A SuperTrope to VirusVictimSymptoms and a SisterTrope of TransformationAtTheSpeedOfPlot. May happen with EvilMakeover and MadnessMakeover. What MonsterDelay is to a BigBad, this is to a protagonist/major character -- either way, the audience doesn't see the creature in all their "glory" until the endgame. Contrast ObliviousTransformation, where a character isn't even aware of the charges to their body.
28
29May also overlap with {{Metamorphosis}}, which is often a gradual process.
30
31AndThenJohnWasAZombie is sometimes the end result.
32
33See FisherKingdom (more specifically the second variant) for when simply being in a certain place can have this effect.
34
35----
36!!Examples:
37
38[[foldercontrol]]
39
40[[folder:Anime and Manga]]
41* In ''Manga/{{Beastars}}'', a hybrid child of two completely different species mature in a way similar to this, often an animal that looked more like one of their parents than the other will begin developing features of the other parent's species when they reach adulthood. Given the heavy social stigma that treats hybrids like freaks, the thought of physically hybridizing further is often treated like BodyHorror for these characters.
42* In the ''Manga/JunjiItoKyoufuMangaCollection'' six-page short "The Hell of the Doll Funeral", a child contracts [[ToyTransmutation Early Onset Doll's Disease]]. She transforms first into something like a living doll, then into something that hopefully hasn't been a living ''anything'' for a long time.
43* In ''Manga/{{Naruto}}'', the process of turning humans trapped in the Infinite Tsukuyomi into White Zetsu takes several years.
44* In ''Anime/{{Simoun}}'', everyone is born female and upon turning seventeen go to a mystical spring where they choose to either remain female or become male. For those who choose to become male the process is a Slow Transformation. For example, head mechanic Wapōrif went to the spring and became male two years before the series but still has the biggest bust in the series.
45* The snail people in ''Manga/{{Uzumaki}}'' develop a spiral pattern on their backs, then start developing other, more horrific traits over the course of several days.
46[[/folder]]
47
48[[folder:Comic Books]]
49* In ''ComicBook/TeenTitans'', when Raven was being influenced by her father's power, it affected her appearance slowly, giving her more gaunt angular features and a [[ForeheadOfDoom taller forehead]] until she fell under his sway and turned on the team ([[RecycledScript the first time it happened]]).
50[[/folder]]
51
52[[folder:Fan Works]]
53* ''Fanfic/TheGolds'': It is casually mentioned that nonhuman curse-victims and magical creatures in Storybrooke like Katja and Ruby started exhibiting their pre-Storybrooke traits slowly after the curse was broken.
54* ''Fanfic/{{Pokeumans}}'': The transformation into a Pokeuman takes a whole week. [[{{Metamorphosis}} And is irreversible]].
55* The FanFic/ProjectDarkJade fanfic ''Fanfic/{{Webwork}}'' has Jade change into a [[spoiler: Jorōgumo]] over the course of 8 years.
56[[/folder]]
57
58[[folder:Films -- Animation]]
59* In ''Anime/TheCatReturns'', the protagonist becomes more [[CatGirl catlike]] the longer she remains TrappedInAnotherWorld.
60* Eustace in "WesternAnimation/TheChickenFromOuterSpace" after he eats one of the chicken's eggs, he begins to turn into a giant chicken, first his eyes turn red, then his arms turn into wings, his face becomes a beak, he grows feathers, and his feet become chicken feet.
61[[/folder]]
62
63[[folder:Films -- Live-Action]]
64* In ''Film/BeautyAndTheBeast2017'', the Enchanted Objects were quickly transformed from their human selves into {{Animate Inanimate Object}}s when the Enchantress cursed them, but what little remains of those original selves slowly begins to be subsumed as the DeathsHourglass of the enchanted rose withers. Plumette (a maid turned feather duster) notes that she's growing more feathers in her tail, for instance. Should the curse go unbroken, they will become inanimate objects altogether. [[spoiler: In the denouement, this happens as the Beast dies, and they lose all of their humanoid features -- but it's just a mass DisneyDeath and they are instantly restored to human forms after the Beast is himself restored.]] See also Theatre below for how the prior stage adaptation used this trope (and was likely an inspiration for its use here).
65* ''Film/BlackSheep2007'': The transformation into a were-sheep starts out as this, as the initial changes are gradual once a host is infected by TheVirus, but then the changes suddenly speed up toward the end.
66* [[spoiler:Wikus]]'s transformation into a Prawn in ''Film/District9'', to the point that [[spoiler:he's become one entirely]] by the very end.
67* The page image charts the progression of Seth Brundle's horrific transformation in ''Film/TheFly1986'', the result of a TeleporterAccident fusing him genetically with a housefly. In the first few days strange hairs start growing out of healing wounds on his back and his face becomes progressively blotchier, but because he is ''also'' becoming DrunkWithPower over the amazing physical stamina and strength he now has (which he credits to his teleporter "purifying" him) he doesn't begin to worry until his fingernails start coming off, revealing that the fingers are oozing pus, whereupon he consults the computer record of his teleportation and learns what's actually happening to him. A month later, his skin is completely disfigured and the human body parts his final form will have no need of begin falling off, starting with his ears. The BodyHorror climaxes with what remains of his decaying human skin being wrenched apart as his true mutant fly form emerges. The film may well be the TropeCodifier for media aside from literature.
68* ''Film/TheFlyII'', the sequel to ''Film/TheFly1986'' above, is about Seth's SpinOffspring Martin. Because Martin was born with insect-human hybrid genes and is at least 75% human on the whole, when the insect side finally begins to show it unfolds over a few days. By the time he's looking his humanoid worst he's forming a chrysalis, and once it's finished the rest of the transformation happens offscreen.
69* The werewolves of the ''Film/GingerSnaps'' films transform slowly into wolflike creatures, over the course of days or weeks.
70* ''Film/{{Honeymoon}}'': Bea's strange behavior and physical degradation over the course of her honeymoon is the result of [[spoiler:being taken over by an alien puppeteer parasite. It gains more and more control over her mind and slowly transforms her into a host body. She's aware of the process the whole time and is unable to do anything about it]].
71* In ''Film/LostInSpace'', Dr. Smith receives a spider bite -- two decades later, [[spoiler:he's transformed into a huge spider creature]].
72* In a PlayedForLaughs example, the protagonist of ''Film/TheSantaClause'' slowly changes to fit the part of Santa (gaining weight, becoming unable to shave) over the course of a year.
73* The entire premise of the low-budget movie ''Film/{{Thanatomorphose}}'' is about a woman who slowly rots alive, starting as small bruises and escalating to rotten brownish-red skin and her extremities breaking off. The movie is set entirely within her apartment, which progressively becomes messy and diseased as she rots. By the end of the movie, [[spoiler:her body completely rots and melts away into a skeleton with bits of red flesh clinging to the bone, killing her]].
74[[/folder]]
75
76[[folder:Literature]]
77* People turning into donkeys in ''Literature/TheAdventuresOfPinocchio''. In the original story, it takes several days for the first part of the change (the ears) to occur.
78* ''Literature/{{Dracula}}'': Due to Dracula nightly visits to feed on Lucy, she becomes weaker over time and observes that her senses have suddenly become keener but she continues to have nightmares of dark beings. By the third visit, she's lost so much of her blood that her bite wounds eventually close up on their own, she gains fangs and her demeanor is uncharacteristically more seductive, signifying to Helsing it's too late to save her from becoming a vampire. Mina's transformation is slightly different due to Dracula feeding her his blood, cursing her to turn regardless if she stays alive or dies as long as he's alive. Indeed, she starts showing signs due to losing appetite for food, her canines slowly turning into fangs, sharing a psychic connection to Dracula and being unable to stay awake during the day but being much more lively at night.
79* In ''Literature/DrFranklinsIsland'', some of Semi and Miranda's bone marrow is removed and the DNA doctored with [[MixAndMatchCritters various kinds of animal DNA]], then implanted in them. It takes about ten days for either of them to start to feel odd and almost an entire month for any changes to become visible, starting with Miranda losing a tooth. After that it speeds up and in another ten days a horribly twisted Miranda is taken away into a lab, and it's not stated how long it actually takes for her to become a bird.
80* When Tash is infected in ''Literature/GalaxyOfFear'', she starts off with a rash that, through that story, swells and spreads, sends off TaintedVeins, and she sweats and is unusually irritable. Then the rash starts oozing... then the ooze proves to be [[spoiler: tendrils of the BlobMonster that she's [[TheVirus turning into]]]] and moving about as the transformation speeds up. This is in a day or so.
81* This is the plot of some ''Literature/{{Goosebumps}}'' books:
82** ''Literature/ChickenChicken'': The main character and her brother are cursed by a witch to gradually transform into chickens after they're rude to her. It starts with the main character's lips becoming hard like a beak and her brother beginning to grow feathers; by the time they figure out how to get the witch to remove the curse, they've become fully transformed and need to peck at a typewriter to communicate with her.
83** ''Literature/MyHairiestAdventure'': The main character, after trying out a strange lotion, starts growing dark fur on his hands that keeps coming back and spreading to the rest of his body no matter how often he shaves it off. While this is happening, he also spots several alarming signs that his friends are being transformed into dogs. [[spoiler:It turns out that the lotion [[RedHerring had nothing to do]] with his transformation; the real cause of it is that he and his friends were dogs who were transformed into humans for childless families to adopt and that transformation is slowly wearing off now.]]
84** ''Literature/SayCheeseAndDieAgain'': The camera's curse makes the protagonist morbidly obese and his friend [[WeightLossHorror dangerously thin]], with the weight gain/loss taking place gradually over a couple of days.
85* In ''Literature/LordOfTheRings'', Gollum's transformation from hobbit to.... ''thing'' was centuries-long. It is implied that the Nazgul's transformation from humans to dark holes in reality was one, too.
86* Stock in trade of the {{Evilutionary Biologist}}s in ''Literature/TheMoreauFactor''. Somewhat mitigated by the fact that their victims are mostly other scientists deliberately chosen because they would find the research opportunities presented by their transformations (if not the actual transformations themselves) intriguing.
87* Though most of it happens off-screen, in Creator/ArthurMachen's ''Novel of the White Powder'', Francis Leicester undergoes one of these after he starts taking regular doses of the titular powder in the belief that it's his prescribed antidepressant. It starts with his appearance provoking a vague UncannyValley response in his sister, Helen. It ends with a [[ImMelting formless puddle of black protoplasmic ooze, seeping through the floor of his bedroom and into the room below]], [[AndIMustScream and yet still very much alive]].
88* In one of the more positive versions of the trope, the MagicalNanny title character of the ''Nurse Matilda'' novels and the ''Film/NannyMcPhee'' film adaptations thereof always starts off as a hideous crone but as her invariably naughty charges learn to behave her ugliness diminishes feature by feature. [[spoiler: Once they're fully reformed she qualifies as beautiful, but that's also when she has to move on to another family.]]
89* After Saladin Chamcha miraculously survives a plane crash in ''Literature/TheSatanicVerses'', he starts turning into a goat man, growing horns and cloven hoofs. In the course of several weeks, he becomes increasingly devil-like, [[spoiler: eventually turning into an eight-foot tall devil with glowing eyes and smoke coming from his nostrils, before turning back to normal]]. During a stay in the hospital, he also encounters patients who are slowly turning into animals and inanimate objects.
90* In ''Literature/TheSecretsOfTheImmortalNicholasFlamel'', when [[{{Precursors}} Elders]] reach a certain age, their body begins to change to reflect their true nature. Abraham the Mage was [[spoiler:[[TakenForGranite turned into a golden statue]], [[AndIMustScream while still fully conscious]]]].
91* In ''Literature/{{Seraphina}}'', dragons' muscles are soft, and their wings incapable of flight, for the first few minutes after transformation.
92* In ''Literature/TheShadowOverInnsmouth'', the inhabitants of Innsmouth are born as humans, but slowly turn into fishmen over the course of their lives.
93* In ''Literature/WarriorWolfWomenOfTheWasteland'', having sex causes the women of [=McDonaldland=] to start transforming into wolves. This happens anytime they have sex, and it is irreversible.
94* ''Literature/{{Xanth}}'': Threnody can take hours to do a full-body transformation with her innate shapeshifting, due to her [[HumanDemonHybrid human half slowing down her demonic half]]. However in ''Crewel Lye'', when Jordan and Threnody [[FreakyFridayFlip swap bodies]], he figures out that it's much faster [[StatingTheSimpleSolution if she shapeshifts only parts of her body at a time instead of everything at once]].
95[[/folder]]
96
97[[folder:Live-Action TV]]
98* ''Series/TheOuterLimits1995'': In the episode "[[Recap/TheOuterLimits1995S1E21Birthright Birthright]]", a U.S. Senator escapes from his security detail after his own men try to kill him, and gradually gets weird warts and such. It turns out that a race of [[LizardFolk reptiloid aliens]] had sent spies to study humans and the spies are turning back after the disguise wears off. The horror factor is the spies themselves didn't know they were aliens.
99* The ''Series/RoundTheTwist'' episode "Nails" starts with a distressed boy showing the protagonist he now has three rows of nails, and telling her he's turning into a monster. By the end of the episode, he has become [[spoiler:a merman]].
100* Three nights after a fly spent a good two minutes on Vice President Mike Pence's head during the 2020 Vice Presidential debate, ''Series/SaturdayNightLive'' addressed the incident in TheTeaser of the October 10, 2020 episode by way of a parody of ''Film/TheFly1986'': Midway through the debate, Democratic Presidential candidate Joe Biden (Creator/JimCarrey), watching from home, decides to disrupt the show by teleporting to it in a not-yet-perfected telepod. Aided by doctored clips from the movie, he ends up not only merged with a fly but also undergoing a cutaway-aided transformation into... Creator/JeffGoldblum. As he mocks the Republican party, his hair turns black and stringy, he paraphrases ''Film/JurassicPark1993'', hypes Apartments.com, and even gains a pair of NerdGlasses! (This was effectively the show's acknowledgement of online outcry for the real Goldblum to parody one of his most famous roles, an unfulfillable request because he was in England shooting ''Film/JurassicWorldDominion''.)
101%%* God-Castiel in ''Series/{{Supernatural}}''.
102* The Halloween episode of ''Series/ThatsSoRaven'' has Raven and Chelsea slowly turning into cows over the course of the episode. While their physique is human, they get cow ears, tails, snouts, hooves, tongues, and also start eating and mooing like them. At the end of the episode [[spoiler: they are completely transformed, but it is revealed that it was actually one of Raven's visions that she manages to prevent from happening]].
103* In "Research Alpha", an episode of the short-lived Creator/{{Syfy}} GenreAnthology ''Welcome to Paradox'', scientist Vincent Cloak is in a race with rival John Hammond to take advantage of guided evolution, so he experiments on himself and secretly on wife Barbara as well. While both Hammond and Barbara find themselves evolving into superbeings, Vincent himself devolves into a weak simian.
104[[/folder]]
105
106[[folder:Tabletop Games]]
107* ''TabletopGame/{{Atmosfear}}'': The third and fourth ''Nightmare'' games are hosted by female historical figures who start out as beautiful young women and slowly morph into hideous monsters the longer the game goes on; a warty witch in the third game's case, and a bat-human hybrid in the fourth game's case.
108* ''TabletopGame/CallOfCthulhu'': As [[HalfHumanHybrids Deep One hybrids]] are growing up they appear to be human. When they reach the appropriate age, they slowly change into Deep Ones and go off to join their fellows.
109* ''TabletopGame/DarkConspiracy'': The ''Darktek'' supplement had Empathic Viral Mutators, a virus that could change the victim into another creature over a period of 48 hours.
110* ''TabletopGame/DungeonsAndDragons'':
111** The "artifact transformations" -- some artifacts gradually transform their users into "the proper owner" image -- physically, mentally or both.
112*** In [=WG5=]'s ''Mordenkainen's Fantastic Adventure'', the Kaftan of Ogrishness slowly turns its wearer into an ogre over a period of three days.
113*** In D3's ''Vault of the Drow'', anyone possessing the idol of Lolth will, over 66 days, slowly turn into a giant spider.
114** Some 3.5th Edition {{Prestige Class}}es can transform gradually their adepts into another creature type, usually over 10 levels (which can take years of adventuring). Of course, in this case the transformation is entirely voluntary, and aim at providing more power.
115*** Dragon Disciples are slowly turning into a half-dragon with every level. The epic variant of the class can further the process into a full dragon!
116*** Green Star Adepts gradually become living constructs made of a green starmetal. The advantages are numerous, and although the final form carry some drawbacks, most importantly it allows the characters to become fully immortal.
117* ''TabletopGame/{{GURPS}}'':
118** In the ''Space Adventures'' adventure "Rebirth", a genetic virus called Proteus can slowly change a human being into an alien.
119** In ''Fantasy Folk'', a Fishmen artifact can slowly change its user into a Fishman.
120[[/folder]]
121
122[[folder:Theater]]
123* Played for drama in ''Theatre/BeautyAndTheBeast''. Instead of being [[KarmicTransformation transformed instantly]] as in [[WesternAnimation/BeautyAndTheBeast the Disney movie]], the inhabitants of the castle slowly change into objects -- until they can no longer move, speak or even see. [[PragmaticAdaptation This change was made primarily to allow full-sized actors to play them]].
124[[/folder]]
125
126[[folder:Toys]]
127* In ''Toys/{{Bionicle}}'', after the Piraka bathe in mutagenic water for a short while, thanks to falling into a trap, they don't notice it, but they start developing aquatic capabilities. When we next meet them a couple of books later, we find that their whole bodies have diminished, reducing them to eel-like spines with their heads at the end.
128[[/folder]]
129
130[[folder:Video Games]]
131* Over several cutscenes in ''VideoGame/DiabloII'', the Wanderer gradually looks more and more evil, until morphing fully into a Diablo form in a final cutscene.
132* In ''VideoGame/EternalDarkness'', one of the characters you play as is inflicted with a curse in their chapter, meaning he gradually rots and turns into an undead creature (this happens at set points in the level) while he tries to warn Charlemagne before he meets the same fate. [[spoiler:He fails and ends up trapped in a room in the church as an undead monster until another character finally puts him out of his misery in a boss battle [[AndIMustScream a few hundred years later]].]]
133* The monsters and face blocks from ''VideoGame/{{Eversion}}'' undergo this as you gradually evert from [[SugarBowl World X-1]] to [[{{Mordor}} World X-8]].
134* In the Custom Nights endings in ''VideoGame/FiveNightsAtFreddysSisterLocation'', this can be witnessed happening to [[spoiler:"Eggs Benedict," the ''PlayerCharacter'', who at the end of the main game got "scooped" and his flesh possessed by Ennard, the animated robot endoskeleton. Ennard-Eggs is shown walking out of his house and down the street, waving to his neighbors, but over successive cutscenes, his body [[BodyHorror gradually rots]] and shambles instead of walks, and his neighbors stop waving and eventually hide in their houses, until Eggs' body ''vomits up Ennard,'' and collapses in a pile. ''Then his body stands back up, as 'Eggs' reclaims it'']].
135* In ''VideoGame/GuildWars Nightfall'', Varesh transforms into a Margonite-like appearance (and eventually a full margonite form) over the course of several missions. This involves getting 2 extra pairs of eyes (first appearing as bumps, then fully appearing) and become a lot paler.
136* ''VideoGame/TheHauntedRuins'': The general shopkeeper slowly transforms from a seemingly innocent girl into [[spoiler:an evil witch]] the deeper you venture into the dungeon. At first it looks like she just put on makeup, [[spoiler:but then she gets PointyEars, her cashier uniform becomes a skimpy dress, and a tiara and pointy nose begin to gradually form on her. This transformation is mostly amusing to watch because of how she keeps on insisting that her changing appearance is all in your head and how you simply ''must'' show the fabled "[[ArtifactOfDoom Dark Orb]]" to her as soon as you find it]].
137* The protagonist of ''VideoGame/ShadowOfTheColossus'' gradually becomes battle-worn as he kills the Colossi. [[spoiler:There is, eventually, an explanation for this.]]
138* ''VideoGame/{{Skullgirls}}'':
139** This happens to [[spoiler:Filia]] during her ending: Upon finding the [[JackassGenie Skull Heart]], she wishes for [[spoiler:Painwheel to return to normal]], a seemingly pure wish that should be granted without problem by the Skull Heart.[[note]]If the Skull Heart decides your wish is impure, you become the next Skullgirl.[[/note]] However, the Skull Heart finds that her motivations are not entirely selfless: [[spoiler:Filia's wish is partially motivated by her desire to atone for her actions during her life as a member of [[TheMafia Medici family]]]]. As a result, poor [[spoiler:Filia]] is next in line for the title of Skullgirl, but since the wish was not entirely selfish, the transformation is not instant, allowing her to at least enjoy life with [[spoiler:her childhood friend]] for a while.
140** A similar thing happens in [[spoiler:Parasoul]]'s ending. In order to [[spoiler:save her sister, Umbrella, from becoming the next Skullgirl]], she wishes that [[spoiler:Umbrella will never become the Skullgirl]]. The Skull Heart grants the wish by [[spoiler:Making Parasoul take her place]]. The transformation is slow enough for her to [[spoiler:train Umbrella to defeat her when she finally turns]].
141[[/folder]]
142
143[[folder:Webcomics]]
144* ''Webcomic/DraculaRulerOfTheNight'': As in the novel, Lucy goes through gaining fangs and having sharper senses. But here Helsing notices her ears are likewise becoming more misshapen to add to the symptoms. By the time she turns, they're completely pointed. When Mina is bitten, she likewise gains this as an added symptom as well as her normally short hair starting to grow out down her shoulders as a surprisingly increasing rate.
145* In ''Webcomic/{{Exiern}}'', dragons are born looking like humans and gradually transform into their true forms after they mature. The protagonist's sidekick/like interest (she can't admit to more than that) Denver is a larval dragon, though he doesn't know it. His sister was well along in her transformation when she was last seen.
146* In ''Webcomic/{{Goblins}}'', Complains is [[http://www.goblinscomic.com/comic/12232008/ targeted]] by a magical effect that tries to turn him [[DemonOfHumanOrigin into a demon]]. It's quickly dispelled, but every time he's badly injured, [[http://goblinscomic.com/comic/02132017-2 he heals]] with more demonic features: [[AlienBlood black blood]], a [[RedRightHand demon arm]], GlowingEyesOfDoom, {{horns|OfVillainy}}, and so on.
147[[/folder]]
148
149[[folder:Web Original]]
150* Ted Bear's weight gain in [[https://www.youtube.com/watch?v=FD7PB-6TWrg this]] ''WebAnimation/CyanideAndHappiness'' short.
151* ''Website/TVTropes'': Our own page description for SelfDemonstrating.SugarBowl.
152* ''Literature/WhateleyUniverse'': Some transformations from the Exemplar power have been said to take at least a year to fully complete.
153[[/folder]]
154
155[[folder:Web Videos]]
156* In ''WebVideo/TheCartoonMan'', Roy's initial transformation into a human cartoon character takes several days.
157* Michael Swaim's... Um... "Cuteification" in ''[[https://www.youtube.com/watch?v=znWYcsYe0Aw Vids They Thought Would be Cute]]''.
158[[/folder]]
159
160[[folder:Western Animation]]
161* In ''WesternAnimation/AdventureTime'', the Ice King used to be a human named Simon Petrikov who found a magical crown that gave him immortality and great ice powers but slowly turned his skin blue, his hair white, and caused him to go mad and lose all memories of his human life. The truly tragic part is that Simon was aware of what was happening to him in the early stages of his transformation but couldn't stop wearing the crown without dying.
162* Downplayed in the ''WesternAnimation/AladdinTheSeries'' episode "Eye of the Beholder", which unfolds over a few days at most. Jasmine is tricked by the disguised Mirage -- who is trying to prove to BlindSeer Fasir that Aladdin would not love Jasmine if she were not beautiful -- into using a lotion that, overnight, begins turning her into a naga -- when she wakes, her lower body has become that of a snake. As Aladdin and his friends escort Jasmine to the faraway Tree of Renewal, the fruit of which is the only cure for her condition, she progressively becomes more serpent-like and even legitimately, though unintentionally, dangerous once she sprouts poisoned barbs (Aladdin is accidentally pricked by them and has a NightmareSequence while unconscious). When Mirage withers the tree as a last resort, Jasmine tries to send Aladdin away with IAmAMonster, but when he [[spoiler: uses the lotion on himself]] so he can stay with her forever Fasir sees this as definitive proof that Mirage is wrong and magically restores the tree so the lovers can be happy as humans again.
163* The Omnitrix transformations are usually instantaneous, but in an episode of the original run of ''WesternAnimation/Ben10'', Ben is bitten by a werewolf-- erm-- that is, [[Main/TotallyNotAWerewolf a wolf-like alien activates the scanning function of the Omnitrix]], and it takes him roughly 1-2 hours to transform into [[OurWerewolvesAreDifferent Blitzwolfer]].
164* In ''WesternAnimation/{{Centaurworld}}'', Horse goes through one once she enters Centaurworld, beginning with the ability to speak where she'd been "just" a regular war horse on the other side, and starts gaining cute, softer features and a talking tail. As the season progresses, she tries to return home before the changes go further or become permanent out of fear that Rider won't recognize her anymore. [[spoiler: She finishes transforming before the reunion, gaining some magical powers in the process. It's quite traumatic at first, but she learns to adjust, and this is helped by Rider recognizing her despite the big visual changes.]]
165* The Alchemist's transformation into Skeleton King from ''WesternAnimation/SuperRobotMonkeyTeamHyperforceGo'' falls under this category. Fortunately, it gave him just enough time to turn his pet monkeys into the Hyperforce. What wasn't shown until "Golden Age" though, was that he was slowly aging. These were his last chilling words as he became Skeleton King:
166-->'''Alchemist:''' Now, the Dark Ones... ''[as Skeleton King]'' take my soul!
167[[/folder]]

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