->''"Despite what the math says, elves do not gestate for an entire decade."''
-->-- ''Blog/{{Things Mr Welch Is No Longer Allowed To Do In An RPG}}'' [[http://theglen.livejournal.com/282764.html "#1616"]]

Sometimes being {{immortal|ity}} or a member of a really {{long lived}} race means that aging occurs naturally or rapidly until a character physically reaches their mid-twenties. At this point their aging stops and they get to be young and beautiful forever, or at least a very long time. Sometimes this is explained as the character being immune specifically to the degenerative effects of aging (sometimes as a side-effect of a HealingFactor) whereas ''growing'' isn't affected; other times they [[PubertySuperpower acquired their powers at a late stage of puberty]].

This is a common feature for [[OurElvesAreBetter elves]], even if they aren't technically immortal but are just long-lived. A character that's YoungerThanTheyLook may fall under this if they weren't [[ArtificialHuman artificially created]]; sometimes a character looks like a teen or young adult but is only chronologically in the single-digits of age, maybe even BornAsAnAdult.

With live-action productions, this is often used because there is an unavoidable upper limit to how long a child actor can play a given role before noticeably aging, but a good makeup department can cover up evidence of aging in an adult actor for years.

Contrast ProportionalAging, AgeWithoutYouth, and NotGrowingUpSucks.



[[folder:Anime and Manga]]
* [[spoiler: Vash and Knives]] from ''Manga/{{Trigun}}'' aged rapidly from birth (by the time they were a year old they were physically around 8), until they reached the physical age of men in their early twenties. Nearly a century and a half later and they haven't aged a day since.
* The Phoenix Saga of ''Manga/RanmaOneHalf'' has both versions of this. Usually the bird takes a hundred years to grow up, but if you force feed it enough it'll mature faster.
* The titular half-youma warriors of ''Manga/{{Claymore}}'' are probably an example of this, the key word being ''probably''. While the few Claymores who ''do'' survive beyond the average human's prime don't show any signs of aging, most aren't likely to live even ''that'' long thanks to the dangers of their chosen profession.
* Neo Queen Serenity of ''Franchise/SailorMoon'' stops aging at 22 (as do the rest of her supernatural friends).
* ''Anime/BloodPlus'': [[OurVampiresAreDifferent Chiropteran queens]] age normally like humans from birth, only for their aging to stop as soon as they turn sixteen.
* Played with in ''Manga/{{Hellsing}}''. Alucard was in his mid-forties when he died (just like the RealLife Dracula), but has the appearance of a man in his twenties [[ShapeShifterDefaultForm because he is powerful enough to assume pretty much any form he wants.]] When his full power is unlocked, he resumes his original appearance (complete with [[BadassMustache mustache]]), but quickly resumes his usual form (and later the form of a [[GenderBender fourteen-year old girl]]). The artificial vampirization process used by [[{{Ghostapo}} Millenium]] also restores their soldiers to a youthful state [[spoiler: most notably with Walter]].
* ''LightNovel/CrestOfTheStars'' has the Abh. Barring accident or illness they live to between 200 to 250 years. From birth to 15 they age at more or less the same rate as a normal human. From 15 to 25 years their maturation slows until they're at a point somewhat equivalent to a lander at age 20 at which point they only age very, ''very'' slowly.
* ''New Anime/CuteyHoney'' takes place about a hundred years after the original series, but Honey only looks a few years older . . . of course, given that she's an android, the fact that she's aged at all is surprising. Possibly justified in that she's a shapeshifter, and may have used her powers to age until her teen years were behind her.
* In ''Manga/AxisPowersHetalia'' it is shown that the Nation-tans age as children, but are usually stuck at 20 or so. It shows Italy as a chibi in the age of the Holy Roman Empire, but adult by UsefulNotes/WorldWarI. It helps that a nation's age progression displays their development as countries.
* While not immortal, Mazoku in ''LightNovel/KyoKaraMaoh'' age ''much'' slower than humans. This is tragically {{deconstructed}} at the end of episode 47.
** Wolfram, who looks like a 15-17 year old {{Bishounen}} physically, is actually 82.
* Although Witches in ''Manga/SoulEater'' live for hundreds of years, the few young witches we've seen (Angela and [[spoiler:Kim]]) are by all indications the same age as they appear to be, implying witches grow to adulthood as fast a humans then grow elderly extremely slowly.
* Black Mage Zeref from ''Manga/FairyTail'' was still a young man in his late teens/early twenties when [[spoiler:his refusal to stop researching ways to revive the dead finally incurred the wrath of Ankhseram, the deity that governs life and death.]] The immortality he gained [[spoiler:as part of his punishment]] halted his aging and granted him NighInvulnerability. Four hundred years later he looks exactly the same.
* ''Manga/YonaOfTheDawn'': When a young man drank the blood of the dragon and became the Ouryuu he became immortal and stopped aging at 17. Since [[spoiler: Zeno]] [[ObfuscatingStupidity behaves like a goofy kid]] and kind of looks like a hobo, Yona and her companions have a hard time believing he really is the 2000 year old dragon warrior.

[[folder: Comic Books]]
* The Viltrumite Nolan Grayson aka Omni-Man and his son Mark aka ComicBook/{{Invincible}} from the eponymous comic book.
** Mark's half-brother, Oliver, may fit this trope even more, since [[spoiler: his mother's race have exceptionally short life-spans, causing Oliver to age rapidly into a teenager in less than one Earth year, at which point his Viltrumite heritage kicks in and slows his aging process to a crawl.]]
* Jenny Sparks from ''ComicBook/TheAuthority'' stopped aging at 19 and remained that way for the remainder of the 20th century. Probably applies to some of the other "century babies" too but some of them at least appear older.
* In ''ComicBook/{{Planetary}}'', main protagonist Elijah Snow is a Century Baby, human beings born at the exact moment a new century is ushered in (in Snow's case, midnight of January 1, 1900) and possess supernatural abilities, near-immortality being one of them. At the start of the series, Snow is nearly a hundred years old but appears to be in his mid-30s. While she is not a Century Baby, Planetary operative Jakita Wagner is over 60 years old yet looks no older than 30. [[spoiler: It turns out her abilities are the result of her being the daughter of a Century Baby whom Snow knew. The children of Century Babies also possess nigh-immortality in addition to various other superpowers.]]
* {{Wolverine}} of the ''ComicBook/XMen'' aged normally until sometime during his prime, when his aging slowed down significantly. Stories set a couple hundred years in the future often show him looking like a normal person would at 50 or 60.
* The rather obscure Comicbook/ClanDestine of Marvel has this in spades. It's not true immortality, as some of them age - just very slowly. The clan patriarch hasn't aged a day since the 12th century.
* The comics have gone back and forth on whether [[{{Superman}} Kryptonians are immortal]] but no matter how slowly they age in adulthood, they always age normally up to about their mid twenties to early thirties.
* Averted by [[ComicBook/ThePantheon Pantheon leader Agamemnon]]. Although he likes appearing to people in the holographic form of a very old man with a long white beard, his immortality kicked in when he was 16. Played straight with his descendants the Pantheon, who all had their immortality hit as young adults.
* Members of the ''ComicBook/DeathVigil'' are locked at the age they died, hence James being called "kid" despite having been in the vigil longer than Sam.
* It's explicitly mentioned in ''ComicBook/ElfQuest'' that elf children grow up quickly and spend an eternity being physically mature. This applies to the Wolfriders as well, who are technically mortal but can easily live 800 years anyway. It does take male elves about 500 years to grow a beard though.
* Martians in ''ComicBook/WarlordOfMars'' are very immortal, or at very least age slowly after reaching physical maturity. The female lead Dejah Thoris, is at least 400 years old by the time she meets John Carter, with the prequel series that she starred taking many centuries before their meeting, yet she is physically in her early twenties. A few exceptions exist with [[EvilOldFolks Issus]] and [[BadassGrandpa Tardos Mors]], who clearly show signs of aging, but its possible that they are ''really that old''.

[[folder:Fan Works]]
* Averted in ''[[https://www.fanfiction.net/s/6350735/1/Secrets-and-Half-Truths Secrets and Half-Truths]]'' with the Uzumaki. According to Mito, an Uzumaki's childhood usually lasts for over thirty years. The reason it didn't for Naruto and Kushina is because keeping the Kyuubi sealed drains them immensely, taking them from half-immortal to having a lifespan matching an average human.
* ''Fanfic/TheMelindaChronicles'' is a Highlander crossover and plays with this. Melinda is physically around 19-20 but that's only because that's when she died her first death and her immortality was awakened. Other characters like Kai (physically 33) and Isa/Frostbite (stated several times to look about Sonic's age) avert this since Immortals stop aging the moment they become immortal.

* Played with in the film ''Film/InTime''. People are genetically engineered to stop aging at age 25, and continue to look the same until their time - which has become the new currency - runs out and they drop dead on the spot. At one point, Vincent Kartheiser's character introduces his wife, daughter and mother-in-law, all of whom look around the same age. It's also possible to kill yourself through, say, [[spoiler: alcohol poisoning]] even if you still have years left.
* ''Film/StarTrekInsurrection'' The magic radiation produced by the planet's rings takes some time to stop/slow the aging process. So when Picard asks a young boy if he's really 75 he's told "no, I'm twelve."
* ''Film/TheManFromEarth'' appears to be about 33, the logic being that this is when humans reach full maturity (and aging after that is just decay).
* While it's not specified, it's clear that this is partly the case in the ''Film/{{Underworld}}'' films. Being bitten by a [[OurVampiresAreDifferent vampire]] or a [[OurWerewolvesAreDifferent lycan]] results either a painful death or turning into the respected creature with the aging process stopped. Those who are born vampire/lycan, however, grow normally until physical maturity, at which point they stop aging. This is why both Viktor (a vampire elder) and Alexander Corvinus (the first immortal) are old, as they became immortal later in their lives.

* ''Literature/NightfallSeries'': Averted with Vladimir, who becomes a vampire in his thirties. Played straight with Armida and Tristan, who are both turned in their twenties.
* ''Literature/TheDresdenFiles''.
** Wizards age much slower than normal humans, with the oldest members of the cast reaching into multiple centuries. They age normally through childhood and adolescence, with their physical aging seeming to slow down somewhere between their twenties and thirties. Old wizards do end up looking old, though a 200 year old wizard will only appear to be in their 70s.
** The extensive cast list gives way to a great number of variances of this trope. Deirdre, a 2000+ year old host to a fallen angel, appears to only be in her teens, while her father, one of the oldest men in existence, has the appearance of a man barely entering middle age. Some younger members of their cult, while still immortal, look to be much older physically than their leaders.
** Uriel, an immortal archangel, is capable of changing his physical shape to any age, though he seems to prefer the form of a young man.
** The immortal queens of the Fae are described as young and beautiful, though their Fae mothers are depicted as old and withered.
** Certain vampires, though, play this trope completely straight, and centuries-old vampires are still inhumanely beautiful.
* [[JustifiedTrope Justified]] In LightNovel/{{Kieli}}. The [[OurZombiesAreDifferent Undying]] are immortal soldiers [[BodyHorror made out of the corpses of dead ones]]. There weren't a lot of kids fighting in the war (which doesn't mean that they weren't [[HarmfulToMinors dying in it]]), and a fully grown healthy adult is going to make a stronger, stabler, more efficient, soldier than a child. [[CameBackWrong Usually.]]
* Subverted in Creator/IanMcDonald's ''River of Gods'' - one of the many enhancements given to the so-called "Brahman Babies" is a doubled lifespan. They age half as fast physically, but mentally (or at least legally) grow up at a more-or-less normal pace, leading to apparently ten-year-old night-club owners.
** A short story set in the same universe points out the rather nasty effect this has on marriages.
* Literature/{{Dragaera}} definitely uses this. Dragaerans are immature from about ages 1-70, but are still in fighting shape after 1,000 years. They do get old eventually, but the series is remarkably low on infirm, elderly Dragaerans, so it's not clear how long they last as "old people".
* Franchise/TolkiensLegendarium:
** ZigZagged by the elves. [[InvertedTrope Their very early development is faster than that of humans, able to walk, talk, and dance within a year.]] After that, [[AvertedTrope things slow down]], and they don't reach physical maturity until around 50 and aren't considered full adults until their first century. After that, they seem to play the trope straight, appearing young and beautiful for millennia, but they ''are'' still aging, just proportionally slowly given that their lifespans are potentially as long as ''the remaining lifespan of the universe''. The oldest elves ''do'' [[SubvertedTrope show signs of aging]], such as Círdan the Shipwright, who at the time of ''Literature/TheLordOfTheRings'' has a long white beard, which he earned by being ''over seven thousand years old'', i.e. '''''he's as old as the existence of the elvish race'''''.
** Numenoreans, at least the nobility, live two or three times as long as ordinary humans, but remain in their prime for most of it, and then will go suddenly from that to senile decrepitude in a matter of months or even weeks. At the first sign, they hand over their affairs to their children and prepare to receive the Gift of Eru (which lesser men call Death)--or at least, they were ''supposed'' to do that. When they stopped, ''that'' is when the trouble began...
** The hobbits, on the other hand, avert this: they live longer than normal humans, but also reach adulthood later (in their thirties--specifically, at thirty-three). For example, Pippin, 29, is treated like a teenager (albeit an older one--more like an 18-year-old than, say, a 15-year-old) and certainly acts as such.
* In ''Literature/PercyJacksonAndTheOlympians'' when a girl joins the hunters of Artemis, they gain immortality. Once they join they no longer age. All of the hunters are said to look in their late adolescent and teen years. Artemis says she could appear as anything she wants but [[AFormYouAreComfortableWith she prefers appearing the same age as her hunters]].
* In the ''Literature/KieshaRa'' series by Amelia Atwater-Rhodes, shapeshifters age like humans and then stop aging past 20.
* Played straight in ''Literature/{{Duumvirate}}'', where it's referred to as "maximum age".
* A science fiction story called ''[[http://www.benjaminrosenbaum.com/stories/start.the.clock.html Start The Clock,]]'' by Benjamin Rosenbaum, was all about the results of averting this trope. An ill-defined plague stopped everybody aging (and apparently gave immortality as a side-effect). The worst-hit group seem to be the teenagers, since their hormone overproduction ''didn't stop'', turning most into what amounts to bunch of sex-mad orcs.
* In ''Literature/{{Twilight}}'' Renesmee the human/vampire will supposedly grow to be 17 in about seven years and then be immortal.
** And according to WordOfGod if you become a vampire while pregnant, you remain pregnant for all eternity. Or however long you manage to live.
* The dragons in ''Literature/InheritanceCycle'' grow up within a few years, despite having very long lifespans. This is taken to the logical extreme in film, where Saphira transforms from an infant to adult in a literal second.
** Dragons reach maturity at around six months, when they're able to breathe fire, but they never stop actually growing. The largest dragons can dwarf an aircraft carrier, and they end up sleeping most of the time and living in their dreams in order to preserve their energy.
** Dragon Riders age considerably slower, but the exact details and rules around are very nebulous. Oromis lived for several hundred years and while he ''looks'' old, he doesn't have any normal signs of aging, e.g. wrinkles. Meanwhile, Brom and Galbatorix have been around for roughly the same amount of time - over a century - and lost their dragons, but Brom looks like a regular old man and Galbatorix looks to be in his 40s. Normal elves, meanwhile, also age very slowly due to their race's magical binding to dragons, and can live for hundreds, if not thousands of years without aging. The one exception might be Rhunon, but she is old even by ''their'' standards; old enough to know about life before the Riders, and bending over a forge for several thousand years can give you a bad posture.
* Partially used in ''Literature/TheBelgariad'' by Creator/DavidEddings. The ''female'' sorcerers (Polgara and Poledra) apparently stop aging after reaching adulthood, but the male sorcerers all appear as old men. While never stated or hinted at, it is possible that this is actually a conscious decision, as all sorcerers are also capable of shapeshifting.
** Pretty much outright stated. In ''Belgarath the Sorceror'', Belgarath says that old men are regarded as wise sages while old women are regarded as ugly crones. It's a subconscious decision, but each sorcerer does decide when to stop aging.
** The dryads also play this straight. Ce'Nedra doesn't look to be much younger than her cousins. She's initially in her mid-teens, and looks it; they're ReallySevenHundredYearsOld.
* Done in ''Literature/TheCompanyNovels'', where the immortals go through the immortality process from pretty much birth to age 18 and then stop aging. They have to use makeup in order to look like they are still doing so.
* In the ''Literature/MercyThompson'' books, all werewolves look to be in their early or mid-twenties, no matter old they were when they were turned (either continuing to mature if they were children, or reverting to the appearance of youth if they were past their prime). The only naturally born werewolf stopped aging in his mid-twenties, as well. This is stated to be part of their healing and disease resistance magic.
* Played straight in ''Literature/TheGuardiansOfTimeTrilogy''.
* In Joanna Bertin's Dragonlords trilogy, Dragonlords are humans born among humans but utterly sterile, birth marked, and with half-dragon souls; at some point these dragon souls manifest and the Dragonlord is stronger and more magical than most humans as well as able to transform into a dragon, and from that point on they age incredibly slowly. Typically they manifest in the twenties or thirties. In ''The Last Dragonlord'', the Dragonlord mentioned in the title is also called "Little One" because he's the youngest, at six hundred years old. Their leader manifested unusually young, at sixteen, and by this point is visibly old. The little one wonders about just how long she's been alive but doesn't ask.
* Conrad Nomikos, the main character of ''Literature/ThisImmortal'' by Creator/RogerZelazny (if the title didn't tip you off, you haven't read enough of this website) looks 23. He's looked 23 for hundreds of years.
* In J.R. Ward's ''Literature/BlackDaggerBrotherhood'' series, vampires live for hundreds of years. Their transition from "pre-trans" to full vampire occurs at about 25, and they age very slowly after that.
* Both Played Straight and Subverted in Creator/TrudiCanavan's ''Literature/{{The Age of the Five}}'' trilogy: whilst the White and the Voices stop aging when they are 'chosen' by their respective gods, The Wilds (powerful sorcerers who develop immortality naturally) generally cease to age at the point when they discover the secret. Whilst most of the Wilds are older than twenty when this happens, due to the full emergence of their powers generally happening after [[PubertySuperpower puberty]], one of the Wilds [[spoiler: The Gull, who is the oldest surviving immortal,]] is [[ReallySevenHundredYearsOld several thousand years old]], but has the body of a child of seven or eight.
* In ''Literature/TheWheelOfTime'' Aes Sedai use an Oath Rod (originally produced as a RestrainingBolt for criminal channelers) as part of their InitiationCeremony. As a side effect, it makes them "ageless" (essentially, wrinkle-free). It also cuts their lifespans in half, which they don't know until they meet wrinkled (though not ancient-looking) channelers who are over 400 years old. It also causes an UncannyValley effect in the eyes, since these apparently continue to age, even if the skin around them doesn't.
* Inverted in Sean [=McMullen's=] ''Voyage of the Shadowmoon", wherein Laron is a perpetually 14-year-old vampyre. With acne and a stuck-on beard. It sucks.
* Inverted in ''The Meq''. The Meq attain immortality at 12 and lose it when they are ready to mate.
* In Kim Harrison's ''Literature/TheHollows'' it is implied that witches grow up like humans and age little for about a century after they reach their twenties, resulting in a natural life span of about 160.
* In ''Literature/HonorHarrington'', prolong recipients are "frozen" at a different age range depending on which version of the treatment they got: mid-forties for 1st, late 20s for second, and early 20s for 3rd. The freeze extends lifespan to the two to three century mark. It also has the effect of extending stages of development; Honor Harrington herself was a bit of an awkward adolescent, gangly and horse-faced, until at least well into her 30s. Such treatments are new enough during the period when most published stories are set that we don't actually get to ''see'' any characters who are 250 years old but look "only" 65 or so, but first- and second-generation recipients of the Prolong treatments do seem to get a prolonged middle age as well as the usual prolonged young adulthood.
** In "Echoes of Honor" we find out that it also extends non-visible aspects of those same periods. Honor's mother, a second-generation prolong recipient, is about 100 years old but has the body of a woman in her thirties... complete with the ability to still bear children. [[spoiler:In the wake of Honor's "death", this is exploited to resolve the issue of succession in Harrington Steading, by having her parents produce a sibling for her.]]
** This was subject to a retcon mid-way through the series. In earlier books, Prolong prolonged ''all'' stages of development, so that a bridge crewed by 20-something graduates of the naval academy looked more like a middle school class, which characters from worlds without prolong found disturbing. Later, however, it's said that children receive additional treatments so they develop up to their 20s at a more normal rate.
** JustifiedTrope: the retcon came after several mentions that crew on ships had mandatory birth control implants because, in a mixed-gender environment, sex between crewmembers would be impossible to prevent and was officially tolerated within limits. This, combined with younger crewmembers looking like very young teens or even prepubescents, raised obvious UnfortunateImplications.
* Joan of Arc in ''Literature/TheSecretsOfTheImmortalNicholasFlamel'' was turned immortal when she was a teenager, so she has this. Averted with many other immortals, though.
** Discussed at one point, when somebody points out that the still adolescent protagonist may want to hold off on acquiring immortality until they were at a more mature age, since otherwise they would be a child forever.
* PlayedForLaughs in ''Discworld/GuardsGuards'', when it's mentioned that dwarfs live up to around 300 and only hit puberty around 55. The human Carrot's adopted dwarf parents find it hard to cope when he reaches young adulthood at what, to dwarfs, is "playgroup age".
* Justified in ''Literature/DirgeForPresterJohn''. People take their third pilgrimage to the FountainOfYouth at thirty, freezing them in time at that age.
* In Creator/MikhailAkhmanov and Christopher Gilmore's novel ''Literature/CaptainFrenchOrTheQuestForParadise'', the Cell Regeneration treatment, which stops the aging process in its tracks, is performed upon request. Most people tend to do it in their early 20s, although some choose to wait until they're 30 to give themselves a more "mature" look. Since the treatment is not genetic, it doesn't affect children born of CR-treated people. The treatment is reversible, but this is only done to criminals sentenced to Aging. Interestingly, youthful looks are a moot point in the novel, as "biosculpting" has allowed people to "mold" their features to any they wish. This has resulted in worlds filled with women who look roughly the same (with main differences being hair and eye colors). The titular protagonist's choice of his next wife is partly guided by the fact that he finds a stunning beauty who doesn't look like she's been biosculpted. French himself gets weird looks from many people, since he looks to be visibly in his [=50s=] and even has some grey hairs (most people don't even know there's such a thing as grey hair). He got the CR treatment late in his life, as it didn't exist when he was born (21st century)
* In Philip Jose Farmer's ''Literature/{{Riverworld}}'', the entire human race through history over the age of 5 is resurrected on an alien planet at the same time. Everyone is at age 20, and those who were chronologically younger than 20 continue to develop until stopping at 20. There's even a term for them "Rivertads".
* In ''Literature/JackBlank'', Revile the Undying has an age spanning millenia, but underneath his mask is only the face of a teenager. He was taken in by the Rüstov at that age and had undergone a radical reformation to transform him into a SuperSoldier that could regenerate FromASingleCell, so he hasn't changed at all in all those years.
* This is the case with warlocks in ''Literature/TheMortalInstruments''. As [[HalfHumanHybrid half-human/half-demons]], they age more or less normally until they reach adult, and then their aging just stops.
* Played with in ''Literature/SkulduggeryPleasant'': magic is explicitly stated to be the reason for mages' long life spans but the effect it has varies from person to person, Tanith Low looks 20 but is closer to a hundred while China and the Dead Men are between three and five hundred years old and only [[DemBones Skulduggery looks his age]] but Greta Daple is 200 and looks over a hundred and complains that magic isn't consistent about how it effect the aging process. Valkyrie plays it straight as her magic is only starting to slow her aging down at sixteen.
* Played with in ''Literature/TheZombieKnight''. Reapers can stop and start their [[CameBackStrong servants']] aging pretty much as they please, limited only by how old the servant was when they died. Captain Erickson is 30 but looks and acts 10, [[CoolOldLady Octavia Redwater]] (who became a servant at 14) looks her real age of about 80, and [[LightEmUp Harper]] looks 30 but is over twice that. [[ExtraOreDinary Hector]] (currently 16) plans to wait until he's in his fifties before having Garovel stop him, [[InHarmsWay assuming he gets that old]].
-->'''Garovel:''' That’s actually a pretty common sentiment, though. You’d think more servants would want to be eternally young, but as it turns out, most sixty-year-olds don’t want strangers treating them like they’re twenty-year-olds.
* ''Literature/TheLastUnicorn'': Given his physical description, [[IneptMage Schmendrick the Magician]] was cursed with unaging immortality sometime in his twenties, or possibly even his late teens. WordOfGod puts his chronological age as anywhere between his forties and his sixties.
* In the ''Literature/ImmortalsAfterDark'' series by Kresley Cole, those born with natural immortality remain mortal until they reach the age of peak physical strength, whereupon they become fully immortal and "freeze" as they are. Then they heal perfectly from any wounds short of death, but before then, they can scar or lose body parts permanently, except for succubae, who trade on their physically flawless looks. It is unknown what happens if a human child is turned into an immortal species.
* In Creator/PeterFHamilton's ''Literature/CommonwealthSaga'', rejuvenation, or "rejuve," treatments restore people back to their late teens/ early 20s. Most people appear to undergo rejuve when they're in their biological 50s. There's no limit on the number of rejuve treatments one can undergo, and by the time the series takes place in the 2380s, there are many individuals around [[Really700YearsOld born in the late-20th century.]]
** In Hamilton's ''Literature/VoidTrilogy'', set over 1,000 years later, technology has advanced to the point where people can elect to be fitted with "biononics" that can maintain them at any biological age [[TheAgeless seemingly indefinitely]]. Most maintain themselves in their early to mid-20s, but a few keep themselves older, usually when they want to maintain an air of gravitas. For people without biononics, rejuve is still around.
* Averted in Creator/SergeyLukyanenko's ''Literature/NightWatch''. The [[DifferentlyPoweredIndividual Others]] remain human until they undergo Initiation, involving their first trip into the [[AnotherDimension Twilight]], at which point they are able to tap into their magical potential. If they are of a mature age, their aging process is slowed down to a crawl. If they are children, they continue to age normally until maturity, at which point their age freezes (mostly). This applies even to [[OurVampiresAreDifferent vampire]] and [[OurWerewolvesAreDifferent werewolf]] children. Inverted in the case of [[WitchSpecies witches]], who age to an "old hag" state in a mere decade, although all witches use spells to maintain a youthful appearance. This also applies to their ability to bear children. Once an Other witch is Initiated, she only has a few years to have children, before her body is no longer able to do that. There are potential Others who refuse to undergo Initiation and live out their lives normally (although both Watches agree to keep them and their loved ones perpetually healthy and off the list of vampire/werewolf hunting licenses).
* Witches and wizards in ''Literature/{{Uprooted}}'' grow to adulthood and then stop. It's mentioned that one of them, Father Ballo, spent forty years illuminating manuscripts in a monastery before someone noticed he wasn't aging. The only indication of their true age is [[WindowsToTheSoul in the eyes]].
* In ''Literature/ThisImmortal'', Conrad Nomikos [[TheAgeless stopped aging]] somewhere in his mid-20s. He is, however, not particularly good looking. On the contrary, one of his legs is shorter than the other, he has a scarred face and heterochromia (diffent-coloured eyes).
* ''Literature/JourneyToChaos'': Elves stop aging once they are fully grown because their [[HealingFactor Seed of Chaos]] rejuvenates them constantly. Eric notes that Nunnal Enaz looks younger than her mortal best friend despite being older.
* This is the only drawback in Damon Knight's novella ''Dio'' (or ''The Dying Man''). In TheFuture, humans have genetically engineered themselves to [[TheAgeless immortality]] and physical perfection; a FreeLoveFuture, with [[WeWillAllFlyInTheFuture levitation]] and HealingFactor enjoyed by all. However, the way they did it was to lengthen the already long period of youth before sexual maturity, creating an asymptotic curve that never quite reaches the apex. They never mature; that's why they don't die. They 'look'' like Greek gods, but they're actually eternal kids. They're not even teenagers. This helps with population control, but they lose out on experiences only adults or the elderly can have ... except the title character, a brilliant artist whose loss of immortality is reflected in his work.
* ''Literature/MistbornTheOriginalTrilogy'': The Lord Ruler has dominated the world for a thousand years, and is worshiped as "the Sliver of Infinity" in the Final Empire. He rarely makes appearances, but when he does, people are often struck by how ''young'' he looks. He looks like a fit man in the prime of his life. [[spoiler:This is because his method of immortality involves compounding his youth to expand it infinitely. He can look whatever age he wants; he chooses to look young for obvious reasons. However, after a thousand years that age is catching up with him, so several times a week he goes to a special room in his palace where he can appear older, to give him a bit more breathing room of youth to compound]].

[[folder:Live-Action TV]]
* Inverted in an episode of ''Series/{{Moonlight}}'' where a vampire who was turned as a young adult has to spend the rest of his immortal life in the midst of puberty. Additionally, the original unaired pilot had the character of Josef Kostan (a 400-year-old vampire) played by the 60-something Rade Šerbedžija (to give the character some Old World wisdom) before the role was recast to the much younger Creator/JasonDohring.
* Adam Monroe in ''Series/{{Heroes}}''
** Also Claire.
** Adam says in the webcomic that he stop actually aging (at least, he noticed it) when he was about 40. His ageing had probably slowed down before this.
** For Sylar, though, it's justified- he acquired his powers of unaging-ness when he (or the actor playing him) was in his twenties, so it makes sense that that's the age he'd stick at.
* ''Franchise/{{Stargate|Verse}}'' has this to an extent with the Ancients. While they (presumably) grow up at a normal rate compared with regular old humans, once they reach maturity they seem to be capable of staying this way for a very, very long time (millions of years if they happen to be encased in ice, as was seen in one episode... though there was limited degeneration, the Ancient in question was still perfectly able to walk, think, and understand modern humans).
* ''Series/{{Highlander}}: The Series'' both averts and explains this. Immortals are always frozen at the age when they first died, so you can get child immortals, but because immortals also tend to hunt each other down, the children don't last long, so you don't see many... the ones that survive the first few years... [[ManipulativeBastard tend to]] [[AxeCrazy be off]]. Immortals above the biological age of forty also tend to be rare, for pretty much the same reason - those that aren't 'lucky' enough to start being immortal when in their physical prime (20s and 30s) are less likely to last long when other immortals come around with a sword and try to cut their heads off.
** Interestingly, the novelization of [[Film/{{Highlander}} the original film]] appears to indicate this trope originally being played even straighter, with the immortality simply kicking in at a certain age and aging stopping. However, that never made it into onscreen canon of the film. It's possible the book was created from an earlier script, before stuff had to be cut for time or whatever.
*** Actually, the film makes it apparent that Connor is already considered immortal at the time of the battle where he "died". The Kurgan was clearly trying to take is head and Connor felt The Kurgan's presence. Neither of these are possible for pre-immortals in later canon. The film also has Connor be able to survive underwater without problems. It's only later that the idea that they still die like everyone else and then come back to life is introduced.
* In ''Series/YoungDracula'', vampires age normally until they turn 16 years old. From the looks of Dracula, they probably still age a bit after that, but not much.
* ''Series/BecomingHuman'' averts this. Adam was turned at 16 and is stuck as either a schoolkid or someone in a badly-paid school-leaver job forever, since he'll never be able to pass for much older.
* ''Franchise/KamenRider'':
** In ''Series/KamenRiderDouble'', Philip [[spoiler: died at age five and then was resurrected as a stream of data composed from the memories of the Earth.]] Towards the end of the show, he's confirmed to be seventeen years old, but Delusion Diary #11 hints that he won't age beyond that [[spoiler: because his body is made of data.]] It may or may not be true given that the scene was part of Shotaro's daydream.
** In ''Series/KamenRiderBlade'', Hajime is an Undead who lives as a human and thus will never age past his current appearance of early 20s. Highlighted in a spin-off novel where Amane (introduced in the show as a ten-year-old girl) dies as an old woman, with an unchanged Hajime by her side.
* In ''[[http://nerdreactor.com/2011/10/15/curiosity-can-you-live-forever-starring-adam-savage/ Can You Live Forever?]]'' Adam finally achieves this after a long series of experimental medical procedures using SufficientlyAdvancedTechnology.
* In the ''Series/StarTrekTheOriginalSeries'' episode "Plato's Children", an alien race that based itself on AncientGreece genetically engineered themselves to stop aging at about 30-40 years old. (When Spock informs one of the female aliens that she looks a few years [[OlderThanTheyLook older than the age at which she officially stopped aging]], she's a bit miffed, despite being ''thousands of years'' older.)
* On ''Series/TheAlmightyJohnsons'' the human reincarnations of the gods receive their powers on their 21st birthday. Olaf is the god of rebirth so he is 'reborn' each morning and thus is stuck at 21 and never ages.
* Averted in ''Series/BladeTheSeries'', where the process is different for pureblood vampires and those who were bitten. Those bitten are frozen at their current age forever (although no one appears to have been bitten as a child, so we don't know). Purebloods (those born as vampires), age extremely slowly. The pureblood who is frequently seen, Charlotte, appears to be a teenage girl but is actually around 200 years old. The mature-looking Overlord Rusk is his [=600s=]. It's not clear if the aging stops for purebloods or is extremely slow (the ''Film/{{Blade}}'' film shows an older-looking pureblood named Dragonetti).
* ''Series/TheOuterLimits1995'': In "Last Supper", there's an immortal woman who actually stopped ageing at twenty. She explains that she was the last survivor of the Black Death sweeping through her village as a late teenager when she found out that she had a HealingFactor.
* ''Series/DoctorWho'': In [[Recap/DoctorWhoS35E5TheGirlWhoDied "The Girl Who Died"]], the Doctor restored a teen-aged Viking girl named Ashildr to life after she sacrificed her life to save her village. The technology the Doctor used not only saved her but rendered her functionally immortal. By the time the Doctor sees Ashildr again in [[DoctorWhoS35E6TheWomanWhoLived "The Woman Who Lived"]], she looks closer to mid-20s, but has been alive for centuries.
** Time Lords start out as children, but whenever they regenerate, their new form is adult and sometimes rather old-looking. Although each regeneration also has a very long natural lifespan in itself, so apparent age means nothing.

* Matra Magna, the antagonist of ''Pinball/PinballMagic'', appears as a twentysomething young woman, though she is ReallySevenHundredYearsOld.

* Religious example: Mormons (and probably other denominations believing in a physical resurrection at the Last Judgment) believe that the dead will be restored to appear as they did/would have in the prime of their lives.
** Catholics believe the same, for the blessed.
* In Hinduism, "the age of the gods is always sixteen."
* In Islam, those who enter paradise will be 33 years old eternally.

[[folder:Tabletop Games]]
* In the Fourth Edition of ''TabletopGame/DungeonsAndDragons'', races that have lifespans greater than that of a human (for example, eladrin) follow this trope, maturing normally until around the age of twenty and staying like that for the majority of their lifespans. Previous editions gave the age at which they reached "adulthood" but no indication of the rate of maturity (which led to questions like, "is a one-hundred-and-ten-year old elf as emotionally mature as a fifteen-year old human?" and "is it wrong to bang an eighty-year old elf?")
** At least a few sources suggested that elven infants mature fast enough that elves probably aren't in diapers for twenty years, ''Webcomic/TheOrderOfTheStick'' not withstanding.
** Adverted ''hard'' for half dragons (in some version) who may not have left adolescence by the time others have died of old age. This is in line with dragon aging where 101 years is considered adult, even considering the half part that's adulthood at 50 ish.
* In ''TabletopGame/{{GURPS}}'' each level of Extended Lifespan doubles the amount of time spent maturing. However, Fast Maturation is available as a zero point ability with each level cutting time to mature by half causing the character to spend that much more time at their prime.
* In ''TabletopGame/{{Exalted}}'', Exalts (who may live anywhere from a few centuries to a few millenia, or even eternally depending on type) stop visibly aging until the very end of their extraordinarily long lifetimes. Since the average age of exaltation ranges from late teens to mid-thirties (there are exceptions of course. The youngest exalt was a preteen and still is after 1500ish years, while one of the oldest to exalt was over 60), they somewhat fit within this trope.
** Also, the Terrestrial Exalted age more continuously and gradually over the centuries (or else their Exaltations would leave a good number of them as semi-eternal children), but do not move past their (physical) fifties or so until their lifespan draws close to an end. Since they always exalt before the age of 20, the rule for them seems to be normal aging until reaching full physical maturity (i.e. early 20s) before it slows down.
*** Solars, Lunars, and Sidereals who exalt as teenagers may follow a similar rule. The 1500 year old preteen mentioned above has spent far too much time in the Wyld and is quite messed up. The others which aren't clearly adults in the artwork are all very young and inexperienced.
** Strangely enforced for Infernal Exalted; part of the deal is having vitality restored, so the general body warping process of the chrysalis grotesque includes being brought back to a physical appearance that roughly resembles their twenties (ironically, the Infernals are, by default, the shortest lived Exalted, with a mere 150 year lifespan). Abyssals also get their vitality restored as part of their Exaltation, which generally involves rewinding to young adulthood or so; however, as one of the benefits of the "champion of death" thing, Abyssals don't age at all, and could theoretically live forever under the right circumstances.
* Inverted in ''TabletopGame/PrometheanTheCreated'', where ''mortality'' begins at twenty - a Promethean who completes the Great Work becomes a human in young adulthood, and can expect a normal lifespan from there on out.
* In the AD&D 2nd Edition setting ''TabletopGame/{{Birthright}}'', people can inherit divine bloodlines, which are generally assumed not to manifest until puberty. One such power is extreme long life, from five to ''one hundred'' times longer.
* The ''TabletopGame/NewWorldOfDarkness'' book ''Immortals'' features a group of beings called the Purified, who became immortal through one of several rituals that involved dying and then coming back to life. No matter how old they were when they performed the ritual, when they come back to life, they always come back in a body that is physiologically in its mid-twenties.
* ''TabletopGame/{{Warhammer 40000}}''
** Juvenat treatments retard aging, but do not affect maturation--thus, nobles, Inquisitors, and other important people can appear to be in their thirties or forties at two to three hundred years of age. The treatments are not perfect, so the appearance of a very healthy 40-50 year old is most common, barring additional surgery.
** During the Horus Heresy the Primarchs and the Space Marines were both considered functionally immortal. The Primarchs rapidly reached maturity and then seemed to stop aging, while the process that creates the Space Marines is performed prior to puberty and bumps the subject into an eight-foot adult colossus. Post-Heresy it's a bit muddled: one Primarch is known to have survived for 1,000 years, but the rest are either dead, in suspended animation while inches from death, lost or Daemons (which immortality comes naturally for). As for the Space Marines, only one has been found to survive the 10,000 years from the Heresy to the setting's present, and he was rendered so infirm that he was unable to move and expired shortly after his discovery. The rest tend to last no longer than three centuries at war, with some reaching 1,000 years still able to fight.
* In one of the earlier ''TabletopGame/{{Shadowrun}}'' sourcebooks, a researcher notes that elves seemed to have some kind of mechanism that caused their aging process to stop for a period of time, but there also were indicators of a latent reactivation trigger that would kick in after a couple of centuries. He then went on wondering what if there were a few that didn't have that second trigger. [[spoiler: There are a few. Harlequin is one of them. He's outlived pretty much everyone and every civilization.]]
* Played for laughs (like just about every HighFantasy trope) in ''TabletopGame/TheSpoils.'' 3lv3s (elves) live for centuries, but spend almost all of that time as ''adolescents'', rather than young adults, meaning that the Gearsmith Trade they call home is littered with juvenile pranks and toilet humor.

[[folder:Video Games]]
* Raine and Genis in ''VideoGame/TalesOfSymphonia''. A bit jarring in Raine's case as she [[spoiler:looks the same age as her mother]].
** As discovered later in the game, [[spoiler:Kratos and Yuan]] both had their aging halted at twenty-something. [[spoiler:Mithos]], on the other hand, got it stopped when he was still a kid, and had to learn a special technique to make himself look older.
* The [[HalfHumanHybrid branded]] in the ninth and tenth ''Franchise/FireEmblem'' games age according to their beorc heritage until they turn [[DangerousSixteenthBirthday sixteen]], at which point their aging processes slow down to match their laguz heritage.
* In the ''VideoGame/{{Suikoden}}'' series; the True Runes keep their bearers from aging ''at all'', leading to one character who's been physically a child for over ''three hundred years''. The effects lasted long enough that they didn't even age while [[spoiler: the Fog Ship Guide held onto the Soul Eater]] in ''VideoGame/SuikodenIV''. Needless to say, [[spoiler: Ted's]] a bit annoyed about this.
** And apparently after taking it off, some can live for ''much'' longer due to some lingering effects of the rune, and in some cases, like with the blue moon rune, gain immortality permanently as vampires, not having to feed as long as they're in range.
** However at least the runes allow bearers to hit puberty before the whole immortality thing sets in. Otherwise characters like Luc and Sasarai who are implied to have had their runes since birth would still be infants. The theory is that the rune stops aging at its prime as defined by JRPG standard (i.e. mid to late teens).
* Pretty much how the aging process for demons native to Veldime works in ''VideoGame/{{Disgaea 2|CursedMemories}}''.
** Averted with non-Veldime demons, who typically have 500 years worth of puberty to look forward to.
** Angels also have the same problem as demons from netherworlds apart from Veldime. [[LoveFreak Flonne]] is the oldest from the trio of main characters of the first game at 1509 (Etna and Laharl are [[ReallySevenHundredYearsOld 1470 and 1313 respectively]]) yet all of them look like there's no real difference apart from height.
* ''VideoGame/{{Touhou}}'', especially in fanon, plays with this trope for all it's worth, thanks to it's LoadsAndLoadsOfCharacters who are ReallySevenHundredYearsOld. The Scarlet sisters were born vampires and have a literal case of ImmortalImmaturity. All of the fairies in the series are refered to in ''Perfect Memento'' as having at most the appearance of a 10-year-old child and CantGrowUp. Most of the others, however, are adults who have lived thousands of years, and include some apparent teenagers who are [[CompleteImmortality truly immortal]]. Yukari, especially, (thanks to dressing up and occasionally acting like a younger woman than she appears to be normally) gets jokes from fandom about being the "old maid" (in spite of only being a couple thousand years old, which is fairly normal by Touhou standards) by some corners, and having her boast that she's (eternally) seventeen by others.
** The fairies may not fully fall under this trope as they are elemental embodiments that are reborn each time they die (which may occur with the changing of seasons according to some interpretations) rather than being immortal or long lived. The fact that the fairy maidens from the Scarlet Devil Mansion appear older then those anywhere else would suggest that fairies ''can'' age to an extent, but [[TooDumbToLive usually die]] before it occurs in any meaningful way.
* After her powers manifested, Aya Brea of ''VideoGame/ParasiteEve'' actually got physically younger. While she actively refused to use her abilities between games, by the time ''VideoGame/ParasiteEve2'' rolls around, Aya is permanently 21.
* Ms. Fortune from ''VideoGame/{{Skullgirls}}'' has something like this. A stolen gem that she swallowed granted her immortality plus a wildly accelerated HealingFactor -- which explains how she survived being ''chopped to pieces'' by Dahila and her goons who tracked her down to get the gem back. She hasn't aged a day since her supposed "death", and has worked out a way to use her [[LovecraftianSuperpower newly-detachable limbs and head]] to her advantage in combat. Pity about the [[ScarsAreForever scars]], though.
* The ''Franchise/MassEffect'' plays with this repeatedly:
** Averted by the asari, who are generally thought to leave childhood at forty, and are considered mature (if rather young) adults at 80. A century-old asari is considered "barely more than a child". They give live birth and just how long gestation takes is never stated, but given a [[VideoGame/MassEffect3 conversation]] between an asari and her shorter-lived non-asari husband involving their two children, it probably is less than a decade.
** Played straight with the Krogan, who are considered battle-ready at a fairly young age and ''stay'' that way for at least a thousand years. They're also explosive breeders, which is why the turians and salarians resorted to the [[DepopulationBomb genophage.]]
** Miranda states that because she was heavily genetically modified, she will likely live 50% longer than a normal human, and it is stated that her body is in its twenties even though she is in her thirties. She makes no mention of whether this affected her growth rate as a child, though [[spoiler: her genetically identical, but much younger, sister Oriana]] grew up having a normal life, which would presumably be impossible if all ageing happened slower than normal, so presumably they play this trope straight.
* [[spoiler:Béluga and Elh]] from ''VideoGame/{{Solatorobo}}'' zig-zag this trope together. [[spoiler:Béluga]] plays it straight, appearing to be a young adult despite his age, but [[spoiler:Elh]] averts it by being stuck as a teenager. [[spoiler:After losing her immortality, she comments that she seems to have finally grown a bit after three hundred years.]]
* Human-passing Nobodies from ''Franchise/KingdomHearts'' can be inferred to have this. WordOfGod states they don't age, but the Nobodies who lost their hearts as kids seem to have aged normally since the time when they would have become Nobodies, while their fully-grown counterparts haven't aged a bit in the intervening decade-or-so.
* In the official fan remake of ''VideoGame/KingsQuestII'', Little Red Riding Hood is retconned into a girl named Possum whom lives with her elderly sick grandmother. [[spoiler: Her grandfather in his youth was turned into a vampire, though a friendly one. But went into seclusion, ashamed of what he became. When he discovers that his elderly wife is going to die he turns her into a vampire so she can live with him and be eternally young. (She actually takes on the appearance of a 30-40 year old.) He also turns Possum, who being a squeaky voiced child, now is a deep voiced fully grown adult.]]
* In ''Franchise/TheElderScrolls'', this appears to be the case for the LongLived racers of Mer ([[OurElvesAreDifferent Elves]]).[[note]]Though ''probably'' not the [[OurOrcsAreDifferent Orsimer]].[[/note]] Of the few examples in the series' lore and backstory, Mer children seem to age similarly to human children until they reach adulthood, at which point their aging slows down considerably. Queen Barenziah, a Dunmer (Dark Elf), is the most prominent example. Her [[InGameNovel biographical book series]] portray her as growing up as a precocious teen and being considered an adult once she was 18 years old. That was nearly 500 years before the events of ''[[VideoGame/TheElderScrollsIIIMorrowind Morrowind]]'' where she's still alive and well, if noticeably aged.
* The Padjal of ''VideoGame/FinalFantasyXIV'' are a race of extremely long-lived, if not [[TheAgeless ageless]], {{Horned Humanoid}}s that cease visibly aging around adolescence. Some of the Padjal met in game have the appearance of a young child, while others resemble teenagers. The one who's most relevant to the story, of course, looks like a young adult. Padjal start out as regular Hyur children, but at some point during their childhood they are "chosen" by the Elementals of the forest. This causes them to grow horns on their head and stop aging. The Conjurer's Guild leader is one, and he comments that while he may look like a child to you, he is really a couple of hundred years old.
* In ''VideoGame/TheSims3'', supernatural Sims age normally until the Young Adult stage. After that, the lifespans of fairies and vampires are 5 times the length of regular Sims, and the lifespans of werewolves are 1.5 times as long.
* In ''Videogame/{{Warframe}}'', the aging process of the transhuman [[PreCursors Orokin]] and their profit-crazed descendants, the Corpus, have been ''dramatically'' slowed down. Darvo is 105 years old, looks 20, and acts and is treated like an unruly teenager. However, the aging seems to stop at the mid 40s rather than 20s; Alad V, Frohd Bek, and Nef Anyo are all several hundred years old and look like 40-something [[FashionVictimVillain fashion victims]]. Teshin was around when the Orokin Empire was at its height a millenia ago and likewise looks like he's in his early 40s. [[spoiler: The Tenno look like teenagers or young adults, yet are nearly as old as Teshin. It's not made clear if it's from their life support systems, their times in cryosleep, or from standard Orokin augmentation.]]
* ''VideoGame/FortuneSummoners'': Literally, for the Goblin-Elf hybrids known as the Elm, except they're not immortal:
--> The typical Elm has a lifespan of roughly a millenia and a half; they age in a similar fashion to humans until the age of 20, at which point they appear 'immortal' like an elf.
* Shadow the Hedgehog in the ''Franchise/SonicTheHedgehog'' games. As the UltimateLifeForm, he is completey immune to disease and his body will never age, and he's already over 50 years old. He's usually portrayed as physically the same age as the teenaged Sonic (or perhaps slightly older).

[[folder:Web Comics]]
* Rankers in ''Webcomic/TowerOfGod'' are people who have both climbed the tower high enough and mastered Shinsoo enough they are completely immortal. Almost all of them look extremely young when in fact each and everyone of them is at least ''500'' years old, that being the average time it takes to become a Ranker in the first place.
** Anak Zahard is an extremely short and child like [[LizardFolk lizard person]] who is in fact ''300'' hundred years old.
* Read [[http://www.nuklearpower.com/2003/09/16/episode-330-dial-b-for-murder/ this page]] from ''WebComic/EightBitTheater''; the lower left panel is fairly creepy.
* In ''Webcomic/{{Drowtales}}'', fae age at 1/2 human rate and stop aging at around 60, thus making them the physical equivalent of a 30 year old human. A fae can wind up aging more than this due to a condition called mana deprivation if they go outside of the mana pool for too long, and if not treated quickly this condition can be terminal and eventually kill them, and even if it's corrected in time they can still look older than average.
* Averted and lampshaded in ''Webcomic/IrregularWebcomic'', when one of the characters in the ''Fantasy'' theme (Mordekai) asks the elf Alvissa why her race hadn't outbred everyone and overpopulated the world. Her answer: "Elven children breast feed for 30 years, teethe for 20 years, throw tantrums for about 100 years, and don't take to toilet training until they're about 200... Elves invented effective contraception before we could use fire."
* In ''Webcomic/{{Inverloch}}'', elves seem to age at the same rate as humans do up until they are fully mature, and then they stop aging. Except for the Severed, who are mortal and continue aging at the same rate as humans until they are cured.
* In ''Webcomic/{{Pandect}}'', Aces (animals with human souls and the ability to switch to a human body) stop aging entirely in their animal bodies, and the human body ages to about mid-20s and then remains there for the rest of their (very long) lives. Justified in that they have to earn Ace: the prolonged period of youth is part of the reward.
* Genetic elites in ''Webcomic/TheCyantianChronicles'', though their age catches up to them quickly as they reach the end of their lifespan (ranging from 120 years in foxes to nearly a millennium in wolves).
** Also elite wolves don't reach their full height of about 7'6" for several decades, as Darius and his classmates are teenagers or mid-twenties they tend to be pretty short (~6 feet) by their species' standards.
* Very common with the long-lived races in ''Webcomic/DanAndMabsFurryAdventures'', pretty much every creature race that looks like beings effectively stops aging in their 20s.
** In the case of the Cubi their major abilities do not awaken until their early 20s, and as one of those abilities is shape-shifting they can look any age they wish for the rest of their lives.
** As demonstrated by Cyra herself [[http://missmab.com/Comics/Vol_1213.php here.]]
* Averted amongst elves in ''Webcomic/TheOrderOfTheStick'', according to Vaarsuvius:
-->'''Haley''': I can't really see the downside of --\\
'''Vaarsuvius''': Twenty years in diapers.\\
'''Haley''': Oh.
** At one point, we meet a pair of elven children who are stated to be 25 years old. We're then told they're in kindergarten.
* ''{{Webcomic/Homestuck}}'' gives us another long-lived example via FridgeLogic: higher-blooded trolls live much longer than lower-blooded ones with hundreds or even a thousand years difference between their expected lifespans, but all of the trolls we've seen so far appear to have aged at the same rate.
* ''Webcomic/GunnerkriggCourt'' has [[spoiler:Jones, who has existed since the Hadean eon (the formation of the Earth itself), and still appears to be a human woman in her late twenties or early thirties. She is not sure where she came from, what she is, or why she appears human at all, as it was obviously several billion years until she saw any creature that looked like herself.]]
* Amical from ''[[{{Webcomic/morphe}} morphE]]''.
* In ''Webcomic/ElGoonishShive'', Adrian Raven, being an elf, has been [[http://www.egscomics.com/index.php?id=2439 stuck in his early twenties for multiple lifetimes.]]