[[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.



[[folder:Anime & Manga]]
* An instance occurs in ''Anime/BakuganBattleBrawlers'', which features [[spoiler: Masquerade, who is really a gender-bent form of Alice. It's an odd case, however, because it's also a case of a JekyllAndHyde scenario - Alice is completely unaware of any actions she commits as Masquerade, and the two interact in Alice's psyche numerous times, proving they have separate consciousnesses]].
* In ''Manga/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.
* ''Oto X Maho'' is about a boy that becomes a MagicalGirl.
* ''Anime/SailorMoon'':
** The Sailor Starlights from the anime version. Their whole transformation sequence involves shifting out of a male form into a female one. 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. In the manga they were girls the whole time, merely posing as boys while in their civilian identities.
** Sailor Uranus in some dubs, as an example of HideYourLesbians. Yes, MoralGuardians preferred Neptune to have a GenderBender boyfriend rather than a regular girlfriend.
* {{Subverted}} with Itsuki Myoudouin from ''Anime/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.
* Inverted in ''Manhwa/PhDPhantasyDegree'', where the set of RingOfPower MacGuffin allows the user to switch their gender, but decreases their power greatly.
* An interesting variant in ''Anime/BirdyTheMighty'', where the protagonist doesn't really turn 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. Especially since one of them is a HeManWomanHater in response to being the only boy in a household of bossy older sisters.
* ''Manga/MahouShoujoOre'' {{Gender Flip}}s the usual trend by making the heroine turn into a very toned man to activate her powers. It's eventually revealed that other girls have made that same gender-bending contract, and her crush [[LovesMyAlterEgo falls in love]] with ''him'' during a RescueRomance.
* Souji Mitsuka from ''LightNovel/GonnaBeTheTwinTail'' doesn't just change genders whenever he becomes Tail Red, he actually goes from a teenager to a prepubescent child, thus inverting the OlderAlterEgo trope.
* In ''LightNovel/MagicalGirlRaisingProject'', the MagicalGirl La Pucelle is in fact a boy named Souta, whose body becomes female whenever he transforms.

[[folder:Comic Books]]
* The Creator/ImageComics Babewatch crossover changed characters in ''New Men'', ''ComicBook/{{Youngblood}}'', ''ComicBook/{{Supreme}}'', ''Chapel'', ''ComicBook/{{Glory}}'' and ''ComicBook/{{Prophet}}'' to women by the magic of Diabolique.
* From Philippine comics, ''ComicBook/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 and appearance to WonderWoman (as well as to ComicBook/{{Darna}}, another notable Filipina superheroine, whose stone-swallowing transformation was parodied by Zsazsa's character).
* Mantra from ''ComicBook/TheUltraverse''. Originally a male warrior, he gained magical powers after his soul was transferred into the body of a woman.
* In ''ComicBook/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 ''ComicBook/{{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. Though he was also slowly losing his powers, meaning he'd eventually be just a regular woman.

* The protagonist of ''Literature/PrincessHolyAura'' starts off as a man in his mid-30s, who - owing to the nature of the powers - needs to turn into a 15-year-old girl to utilize them. In order to maintain TheMasquerade, he starts needing to use that form in everyday life, too.

[[folder:Tabletop Games]]
* This is a possibility in the NWOD fan game ''TabletopGame/PrincessTheHopeful''. However, this is not necessarily a source of embarrassment, since the transformed state is an idealized version of the person in question, so any Princess who gender bends when transforming is probably {{Transgender}} in the first place. However, they can't just stay transformed permanently because most Nobles don't have that as an option (and the ones that do use the magic that drives them insane).

[[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.
* In a disturbing variation, [[VideoGame/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...]]]]

[[folder:Visual Novels]]
* ''[[VisualNovel/MaxsBigBustACaptainNekoraiTale Max's Big Bust: A Captain Nekorai Tale]]'' has its' [[VisualPun tit]]ular character Max changed from a man into a particularly buxom woman near the beginning of the story, and later on it's discovered s/he has electrical powers as well. Two other characters ([[spoiler:Amber and Holly]]) get given their own elemental powers later on when they also get turned into similarly buxom women, but they do not count for this trope as both were already female.

[[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}}. He also isn't too bothered by the gender-changing aspect: hanging out with Tedd has made him used to that sort of thing, and besides, ''superpowers!''
** It does ''somewhat'' bother him, which ends up being pointed out when he notices every subsequent spell he gets seems to involve making him female for some reason. Tedd theorizes the original "become a superheroine" spell was influenced by external factors to specify "female", that he's not really fine with this, and that all of his subsequent spells are at some level attempts to correct the initial mistake... but get stuck on the "turn female" part and thus doomed to failure because changing gender still bothers him. However, as of April 2016, he is showing signs of liking the transformation magic, so that might lead to new spells later in the year.
* ''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 ''[[Webcomic/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."
* Thanks to a SecretLegacy from his Japanese immigrant mother ''Webcomic/MagicalGirlNeil'' starts transforming from an OrdinaryHighSchoolStudent to an Oni-fighting MagicalGirlWarrior on his 16th birthday. He is, needless to say, not particularly thrilled by this. Underscoring his unconventional nature his primary ability consists of the ability to summon a variety of household appliances which he uses as bludgeons or projectiles as the situation requires.

[[folder:Web Original]]
* ''Literature/WhateleyUniverse'': It's a central premise -- in the TheVerse, 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, in Generation 1, 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 a GenderBender 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.

[[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.[[note]]Incidentally, she has also transformed into a male police officer, Steven, Greg, and Dogcopter, who is referred to as male. However, these are more of gags than instances of transforming for power.[[/note]]