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[[quoteright:294:[[Disney/SleepingBeauty http://static.tvtropes.org/pmwiki/pub/images/onewingedangel_sleepbeauty.jpg]]]]
[[caption-width-right:294:Maleficent [[ScaledUp scales]] [[VisualPun up]].]]

->''"Behold my true form, and despair!"''
-->-- '''Dracula''', ''[[VideoGame/CastlevaniaSymphonyOfTheNight Castlevania: Symphony of the Night]]''

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[[ClassicVillain Classic]] {{Big Bad}}s have the tendency, when push comes to shove, to [[PowerMakeover turn into]] big honking monsters. A MadScientist in a fit of urgency might down his own PsychoSerum, or a practitioner of BlackMagic might mutate himself into an EldritchAbomination, orů you get the idea. Bets are good they'll become way more [[WhatMeasureIsANonCute bloated, ugly, or plain disfigured]]. And with this new form, their power grows immensely.

This indicates that the villain means business and it's time for the heroes to get cracking.

Named in honor of Sephiroth, FinalBoss of the video game ''VideoGame/FinalFantasyVII.'' (Okay, named [[AwesomeMusic/FinalFantasy in honor]] of his [[https://www.youtube.com/watch?v=t7wJ8pE2qKU theme music,]] as he has in fact ''seven'' wings, but just one in place of an arm.) Video games in general absolutely ''adore'' having their final boss do this, even when their original form is scary enough anyway. In fact, it's gotten to be somewhat of an arms race: thanks to the popularity of [[Manga/DragonBall Frieza]] in 1991, [[RuleOfThree three-form]] bosses are now somewhat common, and those games going for "epic" will sometimes go for even more. In [=JRPGs=], particularly, it is rather common to see two stages of One-Winged Angel: the "bizarro" form, that is huge and scary, and the "angel" form, that is winged, eerily beautiful and accompanied by OminousLatinChanting. Once beaten, or on becoming even more powerful, the villain may cross the BishonenLine and into safer territory for an EvilMakeover to work its magic (though it's a case of TropesAreNotBad; as much as it's used, you'd be hard pressed to complain when they turn into something ''completely awesome''). Usually accompanied by the stock phrases ''[[BadassBoast "No one who's witnessed this form has lived to tell the tale!"]]'', ''"I have only '''begun''' to fight!"'', or ''"This isn't even my '''final''' form!"''

Sometimes you never even fight their human form at all and they immediately turn into a monster. Can count as TheUnfought if they showed fighting ability in their human form. This is more popular among minor video game villains who will often transform into [[UndergroundMonkey tougher]] [[PaletteSwap versions]] of earlier monsters like in the ''Franchise/BreathOfFire'' and early ''Franchise/FinalFantasy'' games, as a unique battle sprite for them would take up extra development time and storage space on the UsefulNotes/{{cartridge}} (one unique boss could take the space of several mooks, more with the use of a PaletteSwap).

Interestingly, heroes, particularly [[VoluntaryShapeshifting transforming characters]], have been known to occasionally use this "turn into a big scary monster" tactic for their {{Super Mode}}s as well. It's extremely rare for it not to cross into SuperpoweredEvilSide territory. And for those with firmer morals, this qualifies the villain as a monster, [[WhatMeasureIsANonHuman making it fine to kill him]].

One way to defeat a villain who became giant is to [[ShapeShifterShowdown become one yourself]]. A fight of giants can be even worse than a single giant, but it may be done anyway [[GodzillaThreshold if there are no other options left]].

ScaledUp and MakeMyMonsterGrow are major subtropes. SuperMode is a sister trope. See also PowerUpgradingDeformation, IAmNotLeftHanded. Compare EmergencyTransformation, LovecraftianSuperpower, CameBackWrong, and NotEvenHuman. Some subversions are to make it a ClippedWingAngel or PowerUpLetdown. When the transformation is caused by the character's pain or anger it's HulkingOut.

For those looking for actual winged people, see WingedHumanoid, OurAngelsAreDifferent, and (most relevant to this trope,) PowerGivesYouWings.

Before adding examples, please be aware that this trope is not about "just" transforming into a monster. It's not even about villains who ''can'' transform into a monster. It's a plot trope for final battles with villains.


%%If you have time, please take time to put examples in alphabetical order. This page Administrivia/HowToAlphabetizeThings should help you with that.
* OneWingedAngel/AnimeAndManga
* OneWingedAngel/CardGames
* OneWingedAngel/ComicBooks
* OneWingedAngel/FanWorks
* OneWingedAngel/{{Film}}
* OneWingedAngel/{{Literature}}
* OneWingedAngel/LiveActionTV
* OneWingedAngel/{{Music}}
* OneWingedAngel/{{Other}}
* OneWingedAngel/{{Pinball}}
* OneWingedAngel/ProWrestling
* OneWingedAngel/StandUpComedy
* OneWingedAngel/ReligionAndMythology
* OneWingedAngel/TabletopGames
* OneWingedAngel/VideoGames
** OneWingedAngel/SquareEnix
* OneWingedAngel/{{Webcomics}}
* OneWingedAngel/WebOriginal
* OneWingedAngel/WesternAnimation