History Main / PlotRelevantAgeUp

** in ''ComicBook/YoungAvengers'' Vol. 2, [[spoiler: Kid!Loki is aged up to Teen!Loki by Billy's magic]] in a plot to get his powers back. It worked to an extent.

* In the ''VideoGame/SengokuBasara'' series, Ieyasu goes from a BrattyHalfPint in the second game to a rather beefy teen in the third game. Particularly unusual in that all other returning characters remain completely physically unchanged.

**** This also may be a natural factor: Q'onos was probably an extremely harsh world where infant mortality might be extremely high due to natural predators, etc. Klingons living longer and retaining their strength and vigor into old age, thus being fertile for much longer in their lifespan might have been a natural adaptation to keep the species alive. It would also explain their extremely short maturity period.

** Adult character Teal'c was also aged to middle age for his species due to TimeTravel. He had to go back in time to prevent the problem they'd spent the last fifty years on, so his change is for keeps, carrying over to ''The Ark of Truth'' and his ''Series/StargateAtlantis'' guest appearance.

** Illyana "Magik" Rasputin of ''NewMutants'' went from six to thirteen ''in the middle of a rescue attempt'', due to a [[YearInsideHourOutside time rate differential]] between Earth and the hell-dimension in which she was trapped.

*** in ''ComicBook/YoungAvengers'' v2, [[spoiler: Kid!Loki is aged up to Teen!Loki by Billy's magic]] in a plot to get his powers back

* Used to disturbing degrees in HunterXHunter, where [[spoiler: Gon]] forcefully causes his body to age up to defeat [[spoiler: Neferpitou, greatly increasing his nen, at the same time shaving decades off his life span, very nearly causing him to never be able to use nen again and leaving his body a shattered and bloody mess afterwards.

** Nate Grey, a.k.a. X-Man, Cable's counterpart from the AgeOfApocalypse, was created from the DNA of Jean and Scott, then aged up into the ultimate telepath and telekinetic.

** Tommy and Billy, the twin children of the ScarletWitch and TheVision, died as infants, but were reincarnated as teenagers years later in ''YoungAvengers''.
*** in ''YoungAvengers'' v2, [[spoiler: Kid!Loki is aged up to Teen!Loki by Billy's magic]] in a plot to get his powers back

* One of the more {{egregious}} examples is ''{{V}}'', in which Elizabeth goes from newborn to toddler to sexually active teen in record time.

*** in YoungAvenger v2, [[spoiler: Kid!Loki is aged up to Teen!Loki by Billy's magic]] in a plot to get his powers back

*** in ''YoungAvenger'' v2, [[spoiler: Kid!Loki is aged up to Teen!Loki by Billy's magic]] in a plot to get his powers back

* In CordwainerSmith's story ''The Dead Lady of Clown Town'' the major character D'joan (later Joan) is force-grown from age five to age sixteen in one night.

* In ''TheIcePirates'', Karina gives birth to and raises a son to adulthood while the ship is passing through a time-warping zone. The journey takes only a few minutes of screen time.

** Then the writers missed the young Enzo. So they cloned him and made the copy younger.

* Right before the ''[[SonicTheHedgehog Sonic Adventure]]'' arc of the [[ComicBook/SonicTheHedgehog Archie comics]], Amy Rose does this to herself with a wish to justify her joining the party; otherwise, the rest of the gang would've forbidden her from joining for being too young, and the whole game tie-in thing would fall apart.

* Lion-o from ''ThunderCats'', due to [[HumanPopsicle stasis failure.]]

* The Tweebs in the fourth season of ''WesternAnimation/KimPossible'' are an interesting variation: although their art makes them look older, they are not acknowledged as such, but merely advance-placed into Kim's high school during the PostscriptSeason).

* [[spoiler:Lloyd]] in Ninjago

* ''Franchise/MetalGear''-[[TheVerse verse]] [[CloningBlues clones]] age normally up until the time when senescence[[hottip:* :the last cycles of aging]] starts to set in, which then hits them like a train. This was used to age the main character, Snake, from a young and handsome hero in his early thirties into an OlderAndWiser [[CoolOldGuy forty-something]] in the space of only two years in chronology. In ''Metal Gear Solid 4'', despite the fact that he is chronologically in his early forties, he is, by all appearances and genetic testing well into his seventies. Heck, he looks older than some eighty year olds in the game. [[{{Foreshadowing}} Prior to this]], Snake and Raiden had seen how hard the aging hits with Solidus Snake in ''Metal Gear Solid 2''--despite being chronologically younger than Solid Snake, the Patriots had engaged his accelerated aging process early so that he would appear to be middle-aged during the events of the first game and thus [[spoiler:would be able to fit in the role of being the Patriots' puppet President of the United States. As the elections were rigged, the Patriots needed to make their candidate seems as plausible as possible to maintain their charade.]] By the time of the game's events, Solidus's accelerated aging has gone even further and he rather resembles Snake in Metal Gear Solid 4.

* ''{{Ultraman}}'' Mebius takes place 20 years "real time" after the last monster attacked and brings back everyone except Taro's actor.

* [[spoiler:Nelliel Tu Odelschwanck]], formerly [[spoiler:Nel]], of ''Manga/{{Bleach}}''

*** And now we have Cable's protegee, Hope. It involves a lot of different futures.

Often the reason this happens, as opposed to simply bringing in an older character in the first place, is writers want to use use some kind of girl-is-pregnant storyline, but aren't willing to wait the eighteen or so years before the baby becomes interesting. Common if the child is TheChosenOne.

* In ''{{Excalibur}}'', Morgana ages her son Mordred from a child to a young adult in order to face Arthur in combat.

!!Examples:

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* In TheLandBeforeTime, Spike is shown hatching in a patch of grass Ducky finds his egg in. Cut to outside the grass, and Spike inexplicably comes out the same age as the rest of the main cast.
** This could have easily been avoided if he had been that age to start with.

** In "Jake the Dad", Jakes and Lady offsprings was born then became old enough to take care of themselves, going back to Status quo with Jake living with Finn again.

* [[spoiler:Lloyd]] in NinjaGo

* Isabelle in ''{{The 4400}}'', later doing the reverse and temporarily de-aging for plot relevant reasons.

* The title character of ''Literature/TheSagaOfDarrenShan'' had been turned into a [[{{dhampyr}} half-vampire]] in the first book of the series, when he was 12. This meant he aged one year in every five, so when he was thrown into a vampire war fourteen years into the series, [[YoungerThanHeLooks he looked to be around 15]]. Cue came the "Purge", basicly the half-vampire [[OurVampiresAreDifferent counterpart of pubescence]], which allowed him to age up a few years.

* [[spoiler:Liam Kincaid]] from EarthFinalConflict grows from a newborn to adulthood during the first part of the first episode of the second season. Explained by his being [[spoiler:one-third]] alien.
* ''TheWestWing'' has an {{Inversion}}: when Zoey Bartlet was introduced in the first season, she was stated to be 19. In season 2 they decided that she was actually 17 so to add drama to the MS storyline.