History Main / ImmortalImmaturity

*** Delirium's introduction cites her tragedy as being "forever the youngest of the endless", despite the fact that she is older than all of humanity. This is only one interpretation, however.

* Tesla Strong, despite really being seventy-five years old, looks, acts, and is treated like a teenager.

* ''[[FanFic/NobodyDies Nobody Dies]]'' plays with this trope. Even though Sandalphon is only about 16 years old, he IS the Angel of Tears (complete with CreepyMonotone and VoiceOfTheLegion). And he fist-bumps with a human. Also, Iruel's reaction upon seeing [[MindScrew Rei's personal hallucination involving Unit 05]]: "What. The. F___." Hell, '''[[GenkiGirl Rei]] herself'''.

* The gods of David Eddings' ''Elenium'' and to a significantly lesser extent Dweia ''The Redemption of Althalus''' are prone to some rather immature emotionalism. It's explicitly explained by the world-weary Sparhawk and the worldly con man Althalus in both cases as almost stemming ''from'' their immortal nature; having never needing to fear death or be chastised they don't develop maturity as well in some aspects of their personality.

* Edward from the ''{{Twilight}}''. Basically he acts like a teenager.

* The fey in ''WickedLovely''. They are imortal, or at least ReallySevenHundredYearsOld, but they very rarely act or look anything more than early-twenties. Probably the best example is Keenan, who is a 900 hundred year old teenager in pretty much all respects.

* As mentioned in the page quote, [[DoctorWho The Doctor]]. The Eleventh version's claim to be "universally recognised as a mature and responsible adult" is played as the biggest lie he's ever told, given that it shorts out his psychic paper (the same paper that once convinced a stranger he was the King of Belgium).
** In NuWho, The Master is something of a PsychopathicManchild, to help cement him as The Doctor's EvilCounterpart.

** Sometimes this is a case of giving educational tales, using gods as examples, rather than making the gods outright immature - Hinduism is filled with stories like this for example, despite of that in their canon gods are too great to even directly interact with the mortal world.

* The 3.5 edition D&D supplement ''Libis Mortis'' has this as on of the cons of becoming a lich. While a lich has an eternity to learn, they can't change. They'll always have the same mindset and beliefs they did when they transformed.

* Misa from ''ErrantStory'' is about 1,500 years old yet frequently acts like she's 15. She ''has'' been doted her entire life though.

** Redcloak, as the second page quote reveals, is another example. His ageing processes has been retarded by the magical cloak he wears, and he's eventually called out on this by his (normally aging) younger brother: He's spent most of his time following the Dark One's directives (and later, Xykon's directives) and hasn't used any of that time to actually live a life.

*** His children aren't that much better, it says something that ''[[LoveableRogue Puck]]'' could be considered the most mature ones out of the lot. But again, Oberon and kids are {{The Fair Folk}}, a race notorious for being capricious and absentmindedly cruel

** This also applies to Madame Foster, who, inspite of being this trope under her [[ObfuscatingStupidity old lady demeanor]], strangely enough imagined one of the only serious and straightforward friends in the series.

* On ''AdventureTime,'' thousand-year-old [[OurVampiresAreDifferent vampire]] [[EnsembleDarkhorse Marceline]] offhandedly comments ([[CrowningMusicOfAwesome in song]]) that she's not a ''mean'' person, but has "lost track of her moral code" at some point over her long life. [[CharacterizationMarchesOn She seems to find in]] over the course of other episodes, though she still runs largely on ItAmusedMe and JustJokingJustification.

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* As mentioned in the page quote, [[DoctorWho The Doctor]].

* Prishe from ''FinalFantasyXI'' is a HotBlooded {{Tsundere}} JerkSue... and about 10,000 years old.

* The angels and demons in the ''{{Disgaea}}'' series are all over a thousand years old, but act exactly as old as they look. And most of the important ones look like children.

** Delirium's introduction sites her tragedy as being "forever the youngest of the endless", despite the fact that she is older than all of humanity. This is only one interpretation, however.

A darker take of this would be where the immaturity is an act and in fact, they do have inner angsts and turmois that most mortals actually wouldn't understand. Being immortal and having mortal friends would essentially mean that they have to watch them age and eventually perish, angsting over stuff that the immortals don't have to.

Often justified in the sense that an immortal wouldn't have to deal with many of the psychological aspects of growing older. Their bodies don't break down with age, so they don't have to come to terms with decreased mobility or mental capacity. They won't die of natural causes, so they don't have to contemplate the inevitability of death, or the possibility of an eternal reward (or punishment) and all the moral responsibility that might carry. They don't have to worry about their legacy or leaving anything unfinished, because there really ''is'' always tomorrow. Because of all this, these characters never need to "grow up" in the sense that a mortal does.

* In ''OrderOfTheStick'' Xykon spends most of his time with extremely childish (though evil) activities, despite having been an old man even when he became immortal. [[spoiler: Additionally according to his brother Redcloak is trapped in the mindset of a teenager due to the effects of the Crimson Mantle. It's not usually very apparent though.]]

** And for absolutely no logical reason he's ''attending high school''. In his nineties.
*** Actually, this is {{Handwaved}} as an attempt to uphold the {{Masquerade}}, most of the Cullen family looking like teenagers [[DawsonCasting (at least in the books)]]

* Mab and most of the other fae from ''DanAndMabsFurryAdventures'', sort of. Essentially everything they do is a matter of "ItAmusedMe," but they operate and think in an entirely different way from anyone else, and evidence suggests that they can also be mature if that's what amuses them at the time. Additionally, since they're immortal and have a flexible view of time, this behavior might be a way to avoid going totally insane.

*** God doesn't appear much as a character in the Koran...

* Mab from ''{{DMFA}}''. [[spoiler: Maybe.]]
** If not Mab, then certainly Albanion.

** Spike, a vampire over two-hundred years old, mopes like a teenager when Drusilla breaks up with him. He gets some motherly advice from Joyce Summers, a human woman a fraction of his age.

** There is a difference, however, between the gods in the myths and the way they were thought of in religious ceremonies. The Greeks also saw their gods as having multiple aspects that were so different that it was possible to be perfectly devoted to and blesed by one aspect of Zeus while being on another aspect of Zeus' bad side. Compare the difference Between God as He/She/It is ''worshipped'' by the Abrahamic faiths with God's ''character'' in TheBible and Koran.

** Its pretty clear that she's an immortal who refused to "die" (the erasing memories thing); the immortal who explained the whole thing mentioned that they get "more powerful and less sane" as time passes, which describes Chaos pretty well.

* Prishe from ''FinalFantasyXI'' is a gung-ho {{Tsundere}} JerkSue... and about 10,000 years old.

* Evangeline of ''MahouSenseiNegima'' likes to act refined (difficult when she has to look up at the person), but sometimes lapses into childish whimpering (usually when she trips and falls)

->''"[[spoiler:Brother]], you may have had a life'''time''', but you haven't had a '''life''' since the day you put on that cloak. Life is about growing -- growing older, growing wiser, growing closer to your loved ones. But you, you're frozen in time. You're the same angry kid who took that artifact off your master's corpse."''
-->-- '''[[spoiler:Right-Eye]]''', ''OrderOfTheStick -- "StartOfDarkness"''

---> "You call yourself some kind of goddess and you know nothing, madam, nothing. What don't die can't live. What don't live can't change. What don't change can't learn. The smallest creature that dies in the grass knows more than you. You're right. I'm older. You've lived longer than me but I'm older'n you. And better than you. And, madam, that ain't hard."

* In ''[[MermaidSaga Mermaid's Scar]]'', an immortal who has lived for 800 years as an 8 year-old boy only ''acts'' as a child, to keep up appearances, but his mind is anything but childish.

** It's also implied that Albireo "Ku:nel Sanders" Imma is much older than he appears. He spends a good chunk of his post-Tournament Arc appearance making fun of Evangeline. Especially her [[EmbarrassingMiddleName middle name.]]

* [[FullmetalAlchemist Greed]] has a habit of referring to older humans in a disrespectful way {"old fart", "pops", and the like), which fits this persona/appearance as a punk in his early twenties. However, it's kind of odd when [[FridgeLogic you consider]] that he's ReallySevenHundredYearsOld.

* C.C. of ''CodeGeass'' has been around for a very long time, and has suffered a great deal of tragedies as a result. She still tends to act more or less as her appearance indicates, though she seems obsessed with Pizza Hut and its mascot, Cheese-kun.