[[quoteright:250:[[Webcomic/SparklingGenerationValkyrieYuuki http://static.tvtropes.org/pmwiki/pub/images/rsz_supergb_2534.jpg]]]]
[[caption-width-right:250:From an [[{{Muggle}} ordinary teen boy]] to MagicalGirl]]

A character [[GenderBender needs to undergo a complete physical sex change]], usually through magic or AppliedPhlebotinum, in order for them to access their powers. It is used as a justification to give a gender change to a character who would not ordinarily want one.

This trope gives a new twist to the classic [[ClarkKenting secret identity]], as the character not only has to face [[WithGreatPowerComesGreatResponsibility the responsibility of having great power]] but also the hardships of living as a new gender.

Might be used to [[{{Anvilicious}} (not-so-)]]subtly deliver AnAesop about how being yourself is greatly empowering.

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!!Examples:

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[[folder:Anime and Manga]]
* In ''FushigiYuugiGenbuKaiden'', Rimudo has the ability to switch between male and female forms (he usually stays male), but his Celestial Guardian abilities are only available when he's in his female form.
* In ''LightNovel/{{Kampfer}}'', Natsuru Senou was chosen to become a Kämpfer. Thanks to this, Natsuru gains great strength and fighting abilities. On the other hand, it's apparently a rule that Kämpfers can only be girls, so any boys that are chosen transform into girls when their powers activate.
* ''OtoXMaho'' is about a boy that becomes a MagicalGirl.
* The Sailor Starlights from the anime version of ''Anime/SailorMoon'' also count; their whole transformation sequence involves shifting out of a male form into a female one. (In the manga they were girls the whole time, merely posing as boys while in their civilian identities) and their princess is surprised to see they've chosen male civilian forms when they do find her making this an inversion, as their male civilian forms are not their birth gender.
** Sailor Uranus too, in some dubs, as an example of HideYourLesbians. Yes, MoralGuardians preferred Neptune to have a GenderBender boyfriend than a regular girlfriend.
* {{Subverted}} with Itsuki Myoudouin from ''HeartcatchPrettyCure''. Circumstances force her to live as a {{Bifauxnen}}, and it's after becoming Cure Sunshine that she slowly figures out what's best for herself. Namely, being both powerful and beautiful. Considering that her designated nemesis is an AmbiguouslyGay guy with penchant for fashion, this might be a stealth queer aesop.
* In ''PhDPhantasyDegree'', there are a set of magical rings that reverse the gender of their user as well as powering them up. Mostly used by a couple of women who turn into gorgeous, long-haired guys before bringing the hurt.
* An interesting variant in ''BirdyTheMighty'', where the protagonist doesn't really turns into a female superheroic version of himself, but is instead forced to be [[FusionDance fused]] with a female HumanAlien superheroine after she accidentally destroyed his original body. As a result, the two actually are separate characters, but [[SharingABody share the same body]] and can switch between their respective appearance according to the situation.
* ''Mahou Shounen Majorian'' is about two boys given MagicalGirl powers by aliens. Their sexualities become pretty confused in short order.
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[[folder:Comics]]
* From Philippine comics, ZsazsaZaturnnah is an an effeminate homosexual and the proprietor of a small town beauty salon. He has a huge spiky stone that physically transforms him into a superhuman woman whenever he ingests it and shouts the word "Zaturnnah!". His female form is similar in both powers an appearance to WonderWoman.
* Mantra from ''ComicBook/TheUltraverse''. Originally a male warrior, he gained magical powers after his soul was transferred into the body of a woman.
* In ''TheSavageDragon'', the power to turn into Mighty Man, a [[ComicBook/{{Shazam}} Captain Marvel]] {{Expy}}, passed on to Ann Stevens, a nurse who becomes a tall, blond, male superhero when she taps her wrists together.
* In Creator/AlanMoore's ''{{Promethea}}'', one of the former Prometheas was a male comic book artist called Bill Woolcott.
* The HERO Dial in ''ComicBook/DialHForHero'' will, very rarely, turn a man into a female hero or a woman into a male hero; in the case of "Shocking Suzi", formerly Joe, he lost the dial before he could turn back and remained a superpowered woman for the rest of his life.
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[[folder:Video Games]]
* ''VideoGame/{{Espgaluda}}'' series: The heroes are already powerful psychics, but gender-changing makes them into ''even more powerful'' psychics.
* [[spoiler:Milton]] from ''VideoGame/FableIII'' is male; however, if the hero is female, [[spoiler:Milton]] will swap genders when he assumes the hero's form, as well as gaining the power of a Hero.
* ''VideoGame/TheLegendOfZeldaOcarinaOfTime's'' Shiek is either this or SweetPollyOliver.
* In a disturbing variation, [[ResidentEvilGunSurvivor Morpheus]] from ''Dead-Aim'' seemingly changes gender when he mutates into an incredibly powerful Tyrant, with an obviously feminine voice, face and figure. The virus that mutated him is even called the TG-Virus. He gains super strength, speed, agility and electricity powers, but that electricity is produced by two organs on his chest that look like breasts. There is absolutely no reason for him to gain organic CombatStilettos though. [[BodyHorror Considering what previous TG-Virus test subjects turned out like]], Morpheus got off lucky with his new good looks and powers [[spoiler:until he sustains too much damage and his HealingFactor [[BlobMonster goes out of control...]]]]
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[[folder:Web Comics]]
* Elliot from ''Webcomic/ElGoonishShive'' acquires a spell that allows him to turn into a [[MostCommonSuperpower voluptuous]] [[FlyingBrick superheroine]]. Note that he is already pretty powerful due to his SupernaturalMartialArts and occasional {{Shapeshifting}}.
* ''Webcomic/SparklingGenerationValkyrieYuuki''. The protagonist is an average male OrdinaryHighSchoolStudent chosen to become a [[MagicalGirl Valkyrie]]. However due to the fact that all Valkyries are female, he got transformed into a female to access those powers. He gets two new identities: one as a female version of his other self, and the other as an idealized MagicalGirl version of that new self.
* Exposure to Virus-X gave the T-Girls of the RemixComic version of ''Webcomic/JetDream'' low-level super powers (enhanced agility, strength, and endurance.) Their exposure was accidental, but a voluntary procedure for recruiting new T-Girls is also described.
* In ''[[JillTrentScienceSleuth Jill Trent, She-Sir Science Sleuth]]'', when [[AppliedPhlebotinum Femavium]] interacts with the spinal fluid of a man, the result is a transformed woman with super powers that seem to vary according to the recipient. Jill gains "girl-brain cells with the proportional density of 58 girls." Another character gains "the flexibility of 45 ballerinas."
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[[folder:Web Original]]
* ''[[WhateleyUniverse Whateley Academy]]'' has this as a central premise -- in the [[TheVerse WhateleyVerse]], mutants have about a 1 in 3 to 1 in 6 chance of being Exemplars, and thus having what's called a BIT -- Body Image Template. Long story short, these mutants have an idealized shape they associate with themselves, which can be just about anything -- including the "wrong" gender. The majority of the stories revolve around a clique of students who had their [[GenderBender genders changed]] during their origin stories, and are part of Poe Cottage -- a dorm designed to hide this fact (as well as other LGBI students) from the study body at large.
* Any male human who uses a female RIDE in the ''FreeRIDErs'' universe is technically an example of this. Especially Rochelle who gains several seduction based powers after being [[spoiler: Genderjacked by Uncia]]
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[[folder:Western Animation]]
* {{Downplayed|Trope}} on ''WesternAnimation/StevenUniverse:'' [[BigFun Amethyst]] fights in wrestling matches as "the Purple Puma," using her VoluntaryShapeshifting to become a larger, beefy man. The fact that she switches gender is pretty much incidental, except that [[TagalongKid Steven]] at one point refers to her as "she" and quickly corrects himself.
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