History ManChild / AnimeAndManga

* {{Discussed}} in ''Manga/AsteroidInLove''. When [[TheProtagonist Mira]] shows she is [[FriendToAllChildren very good with children]], Yuu wondered alound whether that's because she's "more similar to a child", given her {{cheerful|child}} {{ditz}} demeanour is rather child-like. Chika immediately shuts [[InnocentlyInsensitive Yuu]] up (again).

* [[ScrewTheRulesIHaveMoney Pegasus J. Crawford]]/Maximillian Pegasus from ''Manga/YuGiOh'' despite being YoungerThanHeLooks is a large fan of cartoons, talking about them fondly in his youth to Kaiba and vividly recalling all the episodes. This led to him using a Toon deck, though being the creator of the game, he gave his Toon monsters effects based on ToonPhysics, making them near ''unstoppable'' in the anime and while they were nerfed for the actual card game (and later episodes), they are still a serious contender. That being said, Pegasus has also his serious and dark side, which is reflected by some of his other cards, especially [[EldritchAbomination Relinqueshed and Thousand-Eyes Restrict]].

* Yukari Tanizaki from ''Manga/AzumangaDaioh'' is rather immature [[SenseiChan despite being the main characters' teacher]], which is lampshaded by her students and her fellow teachers. She tends to throw tantrums or sulk like a little kid when things don't go her way, and has been known to [[ApatheticTeacher get bored enough with her own classes]] to ditch them to go swimming or rope her students into playing sports instead. At one point, she arrives late to class because she was stuck in line to buy a Platform/PlayStation game. To top it all off, she's unmarried and still lives with her parents.

* Yukari Tanizaki from ''Manga/AzumangaDaioh'' is rather immature [[SenseiChan despite being the main characters' teacher]], which is lampshaded by her students and her fellow teachers. She tends to throw tantrums or sulk like a little kid when things don't go her way, and has been known to [[ApatheticTeacher get bored enough with her own classes]] to ditch them to go swimming or rope her students into playing sports instead. At one point, she arrives late to class because she was stuck in line to buy a UsefulNotes/PlayStation game. To top it all off, she's unmarried and still lives with her parents.

* Misato from ''Anime/NeonGenesisEvangelion''. {{Downplayed|Trope}}, and [[BrokenBird played for tragedy]] instead of humour. Her flighty, immature behavior when she's not on duty is a cover for serious emotional issues, and hinders her ability to connect to her wards and pilots, Shinji and Asuka.

** [[Anime/DragonBallSuperBroly Broly]] is a tragic example as while he’s more polite and far less battle hungry than Goku and Vegeta (whom he is the same age as), due living decades on Vampa Broly has got the mind of [[WildMan a wild child]]. He tries to eat snacks with the wrappers on before Cheelai stops him, and Broly still wears the ear of an alien he befriended as a child. [[spoiler: Broly also freaks out at the death of his father Paragus the same way a small child would, albeit with more destructive results]].

* Vash the Stampede from ''Anime/{{Trigun}}'' is a donut-loving goofball who frequently plays with groups of children, chases girls and in general loathes violence. [[spoiler: This doubly ironic since he’s actually an 131 years old [[HumanAlien Humanoid Plant]] who has genius-level IQ, though Vash is technically ObfuscatingStupidity a lot of the time]].
** Milly Thompson is prime female example being a 5'10 inch grown Woman Child who easily gets upset over things such as pudding and is almost painfully naive at times. Though with that said being so innocent she’s one of the few people who can get away with giving AllLovingHero Vash a slap when he steps out of line.

* A female variant is the high elf archer from ''LightNovel/GoblinSlayer''. She is quickly excitable, makes fun of others and generally behaves childishly. She is also idealistic to the point of naivety. Since she lives in a [[DarkFantasy brutal world]], she is inevitably becoming more serious in some episodes.

* Catarina in ''LightNovel/MyNextLifeAsAVillainessAllRoutesLeadToDoom'' is a bit of an odd example since she's physically only 8-16 depending on where in the story you are. However, since she remembers the entirety of her seventeen years of living in her past life, she considers herself to ''actually'' be 25-34. And yet she still behaves like a hyperactive six year old half the time. Brain damage may or may not be to blame.

** Jessie has to be in her mid 20s, but she is extremely immature. She's prone to having hissy fits and even lashes out at James and Meowth when they say and do things that she doesn't agree with. Ash and his friends are much more mature than her.
** In ''Anime/PokemonTheSeriesSunAndMoon'' in a case of AdaptationPersonalityChange, Lusamine is an immature Woman Child and an AmazinglyEmbarrassingParent to her daughter Lillie. Lusamine even has a thing for senshi. This gets exaggerated when she [[spoiler:fuses with Nihilego]]. In contrast, her daughter is an AdorablyPrecociousChild.

* Skadi Dragenfelt in ''LightNovel/MonsterGirlDoctor'', [[spoiler:after having the parasitic growth on her removed]], is shown act just as childish as she looks, whether it's enjoying being pampered and hugged or [[spoiler:referring to Glenn as "big brother" and teasing him about whether or not he finds her attractive]], even though she's the chairwoman of the town and is nearly a thousand years old.

* ''LightNovel/ReZero'' shows the half-elf Emilia. She is older than Subaru chronologically and physically, but she is much younger emotionally. She is so inexperienced and innocent that she even believes that kissing can make you pregnant.