History Main / ProportionalAging

** The Asari have an average lifespan of around a thousand years and age very slowly, their cultural life stages also reflect their long lifespan as seen with Liara, who despite being 106, is considered the human equivalent of a young adult in their early 20s. Generally, the asari have [[TheThreeFacesOfEve three distinct phases of life]], the Maiden stage from puberty until around 350, the Matron stage in the middle when they begin to settle down and have children, and finally the Matriarch stage from around the age of 700 until their deaths.

* Implied with the Agori and Glatorian of ''Toys/{{Bionicle}}'', where in order for someone to be even remotely ''perceived'' as elderly, they apparently need to be well over 100,000 years old. Gresh is younger and acts a lot like a teenager, but even he is hinted in the story to be [[SciFiWritersHave/NoSenseOfTime "only" a few dozen millenia old]].
** This is also present to a lesser extent in the main story as well, since one character is subjected to a RapidAging attack, which advances him ''3,000 years''. He's treated as no worse for wear, likely having aged the human equivalent of less than a decade.

* ''Fanfic/VowOfNudity'': Swiftstride shifters (of whom Fiora is a member) reach young adulthood at 10 and usually live less than 70 years.

** Different universe, same concept. In ''VideoGame/FireEmblemPathOfRadiance'' and ''VideoGame/FireEmblemRadiantDawn'', the [[{{Animorphism}} Laguz]] lives a lot longer than the [[HumansByAnyOtherName Beorc]], as the Beast laguz can live at least around 200 while Black Dragons can live around 1000 years. [[AllThereInTheManual The artbook]] gives a straight estimate for some laguz, with Lethe comparable around 18 while Dheginsea being around 50, despite being one of the oldest laguz in Tellius, though fans have questioned if that information is canon to the final script due to contradictions with in-game statements. Branded are also long-living and their appearance may not be indicative to their age. Micaiah still look like a young girl despite her closest friend, Sothe, growing up quite noticeably and Stefan (also a Branded) once point out that Amy (Largo's and Calill's adopted daughter) is Branded and still look like a little girl. [[AmbiguousSituation However]], dialogue between Stefan and Soren in ''Path of Radiance'' implies that the Branded instead experience ImmortalityBeginsAtTwenty by aging at the Beorc rate until they turn [[DangerousSixteenthBirthday sixteen]] and it slows to match their Laguz ancestry; this dovetails with Micaiah's appearance, as she appears around sixteen while the timeline places her chronological age between twenty-three and twenty-seven.

* Elves in ''Manga/{{Drifters}}'' are stated to have a lifespan about five or six times that of humans, and it shows in their rate of maturation. The youngest elves shown are young boys who, when asked, reveal their ages as thirty-six and thirty-nine. This shocks Toyohisa, since this means they're older than he is — the RealLife Toyohisa Shimazu died in the Battle of Sekigahara being all of thirty years old (though in manga he often acts younger than his age would suggest).

[[folder:Films — Live-Action]]

* In the ''Franchise/{{Predator}}'' series, the Predators, or yautja, can live for centuries or millennia. For example, ''Film/Predator2'''s City Hunter is an adolescent by yautja standards, little more than a excitable, glory-hungry teenager.

!!!'''Series:'''

* ''Series/TheMandalorian'': In the [[Recap/TheMandalorianS1E1Chapter1 first episode]], the Mando discovers that his 50-year-old bounty target is [[spoiler:a baby from the same extremely long-lived species as Yoda, who died at the age of 900]].
!!!'''TV Movies:'''
* In ''Film/MagicalLegendOfTheLeprechauns'' Mikey looks to be in his early twenties, but is stated to be "not even two hundred years old yet." We see leprechauns and fairies at all stages of life along with different people declaring themselves to be over a thousand years old.

[[folder:Films — Animation]]

[[folder:Films — Live-Action]]

* Wonder Woman in ''WesternAnimation/DCSuperheroGirls'' is 317 years old, but her mother isn't just being coddling when she refers to her as an adolescent--that's why she's [[TeensAreShort so much shorter]] [[LargeRunt than the adult Amazons]].

* ''Franchise/StarTrek'' has a number of species that have very long life spans compared to humans but age in outward appearance at a slower rate. This is especially the case with Vulcans.
** Sarek appears to be in his late 40s or early 50s in the ''Series/StarTrekTheOriginalSeries'' episode "Journey to Babel" but in reality was 102. He would go on to live another century before passing away.
** ''Series/StarTrekVoyager'': At the beginning of the series Tuvok appears to be in his thirties or forties but it's later revealed he had been married for over 67 years and had served on the ''Excelsior'' in 2293.
** Similarly, in ''Series/StarTrekEnterprise'' T'Pol appears to be in her late 20s or early 30s before its revealed she is significantly older. A Vulcan ambassador who appears to be middle aged remarks that she had been alive and working when first contact occured between humans and Vulcans a century earlier.

* ''WebOriginal/{{Serina}}'': The daydreamers are a sapient species of large orca-like marine bird that possess an average lifespan of around 130-140 years. As such they reach sexual maturity in their late 20s and lose their fertility in their 70s.

* ''WesternAnimation/{{Madagascar}}'' starts with Morty the zebra's tenth birthday, prompting a HollywoodMidLifeCrisis.