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[[quoteright:350:[[Literature/BakaAndTestSummonTheBeasts https://static.tvtropes.org/pmwiki/pub/images/BtT_reveal_1756.jpg]]]]
[[caption-width-right:350:Were the hair clips not [[TertiarySexualCharacteristics enough of a clue]]?]]

A Gender Reveal occurs when a character's ''true'' gender is revealed, either to the audience or in-universe to other characters. The gender could be hidden completely or appear to be the opposite to their true gender, revealed to the audience, or known by the audience and revealed in-universe to characters. Reasons for the confusion range from intentional on the character's part to just having a naturally misleading appearance. Situations with {{Crossdress|er}}ing and {{Gender Bend|er}}ing are particularly prone to including gender reveals for obvious reasons.

This index covers all instances of one gender mistaken for another gender. Examples belong on the appropriate trope. Note that not all of these tropes ''necessarily'' involve a Gender Reveal, just that they are places one is likely to occur.

Compare MistakenAge.
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[[index]]
!!Applies to all genders
* AmbiguousGender applies to characters whose true gender is kept deliberately ambiguous; sometimes they get a Gender Reveal later, sometimes they don't.
* AmbiguousGenderIdentity applies to characters whose gender identity is left vague. They're sometimes given a Gender Reveal later on (which may be due to a ComingOutStory), but not always.
* {{Crossdresser}} applies to characters who dress in the clothing of the opposite sex. May or may not involve a Gender Reveal.
* MultiGenderedOutfit applies to characters who dress in the clothing of multiple genders at once.
* OldFriendNewGender happens when an old friend you haven't seen for a while has now transitioned from one gender to the other.
* SweetOnPollyOliver is when what appeared to be distressing, incompatible attraction is revealed to be compatible upon a Gender Reveal, usually garnering a positive reaction.
* TransTribulations occur when a character is revealed to be UsefulNotes/{{transgender}}, which often results in misunderstanding and discrimination from others.
* TransRelationshipTroubles applies when characters have a hard time accepting a romantic partner who turns out to be UsefulNotes/{{transgender}}.
* UnsettlingGenderReveal is when what appeared to be compatible attraction is revealed to be incompatible upon a gender reveal, usually garnering a negative reaction.
* ViewerGenderConfusion is the result of a character with an ambiguous or misleading appearance confusing the casual audience as to the character's true gender, but the narrative isn't trying to hide anything. Anything that makes their true gender obvious may act as a gender reveal for the confused viewer.
* YourTomcatIsPregnant is when the gender of a pet is mistaken, frequently when a supposed male pet is found to be pregnant or has babies.

!!Appears male, reveals female
* {{Bifauxnen}} is when a female looks like a PrettyBoy. May or may not involve a Gender Reveal.
* FemaleMonsterSurprise is when a monster or other creature is revealed as female.
* LadyLooksLikeADude is when a female looks like a male. May or may not involve a Gender Reveal.
* MonsterIsAMommy: Where one thinks the monster or creature is male, but realizes that "he" has grown offspring.
* SamusIsAGirl is when the audience is completely left in the dark that a badass is female until the Gender Reveal.
* SweetPollyOliver is when a female is disguised as a male. May or may not involve a Gender Reveal.

!!Appears female, reveals male
* DisguisedInDrag is when a male is disguised as a female. May or may not involve a Gender Reveal.
* DudeLooksLikeALady is when a male character looks feminine enough to be mistaken for female, which may or may not necessitate a Gender Reveal.
* LongHairedPrettyBoy: When the "pretty" boy aspect is taken to literal extremes, as per the preceding trope. It can just as easily lead to ViewerGenderConfusion.
[[/index]]
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