Older Than They Look/Anime and Manga

Examples of characters that are in  include:

"Natsuki: How old do you think I am? Mai: (confused) Aren't you a high school girl? Natsuki: (annoyed) That's not what I meant. I'm seventeen. I was away from school for a year."
 * Jotaro Kujo of JoJo's Bizarre Adventure should be over 40 by the time the Stone Ocean arc (whose 17-year old protagonist also happens to be his daughter) rolls around—but he barely looks like he's aged a day since his teen years (though he looked like a guy in his twenties back then). In fact, some say he actually looks younger in the later arcs. Compare his appearance at age 17 to his appearance in his 40s.
 * Faye Valentine from Cowboy Bebop is much older than she appears,
 * Saito Hiraga from The Familiar of Zero. He looks no more than 13, but is in fact a 17-year old.
 * Even worse is his Tsundere mistress, Louise who only looks ten at the most and is the same age as Saito.
 * Libra Dhoko from Saint Seiya fills both this and the Younger Than They Look trope (oddly enough). He's over 200 years old, with a body of a 21-year old (after shedding his old skin) OR a 21-year old in a very old body.
 * Mika-sensei in Doki Doki School Hours is a 27-year old woman, though she appears to be ten years old. This doesn't prevent one of her students, Kitagawa, from being attracted to her. In fact, it encourages it.
 * In Please Teacher!, Kei is a 18-year old male lead who is functionally fifteen years old due to a coma that resembled suspended animation. Among other things, this also served as Lampshade Hanging to explain the contrivance of him and Mizuho shacking up together, since eighteen is minimum age to marry...
 * Minnie-May Hopkins from Gunsmith Cats took "growth retarding" drugs in order to appeal to a certain type of clientele in a brothel. However, this is supposed to be squicky to the viewers. It squicked out the American editors so much they reversed it in their translation so she's taking drugs to counter an unnamed medical condition.
 * In the English version, May had tried to make herself look older than she was in childhood in order to not Squick her adult boyfriend so much (he was Lolicon, but understandably had serious issues about the morality of their relationship) but it backfired, leaving her first looking older than she was, but not growing an inch since.
 * Somewhat related cross-cultural example: when Digimon Tamers was translated for Western network television, they raised the kids' official ages by a few years (from ten to thirteen), possibly due to what happens to them and the relations they get into squicking the translators a bit. Digimon Adventure 02 and Digimon Frontier also had all the kids ages raised a year.
 * The same thing happened with 4Kids' version of Tokyo Mew Mew, presumably for similar reasons; an especially jarring example is Bu-Ling, who begins the series at eight years old, yet the dubbed version managed to make her fourteen. Oddly, Tokyo Pop's manga translation moved the characters down a year to appeal more to a young audience.
 * The title character of Kamichama Karin, as well as her Nakama are all in the seventh grade, but look to be no older than seven, while other characters such as Kirio Karasuma and Kirika Karasuma look to be around sixteen, even though they are only one year older than the main cast.
 * This is more Koge-Donbo's style than anything else. In one panel in the first chapter, Karin is shown drawn as her true age; for almost all of the rest of the series, she and her classmates are drawn as chibis. The same goes for the author's other series Pita-Ten.
 * Hagu from Honey and Clover is apparently 18 at the begining of the series, despite looking and acting like an 8-year old—which doesn't keep some guys from falling in love with her.
 * Which is made worse by the fact that it is openly stated she stopped growing at six and she barely changes by the time she's twenty.
 * Galaxy Angel has Mint, a 15-year old who looks like she's ten.
 * Subverted in My-HiME (which does in fact include a character fitting this trope, just not that one):

"Ren: That's odd. I wrote 18 to 25 in the ad. Nako: I'm 21!!"
 * Moetan's Ink and Sumi are said to be high school students, but they look about five. This doesn't help the fact that their ex-magician partners appear to have an extreme case of Lolicon.
 * Presumably the first Club President of Genshiken, who later turns out to have been the only Club President the Society for the Study of Modern Visual Culture had ever had until he handed it off to Madarame. The members briefly speculated how old the Prez actually was after finding manga books in the clubroom that date back to 1987.
 * Done in Suzumiya Haruhi with Mikuru Asahina, who is described in the series as "Lolita-looking". She's seventeen, while the rest of the cast is sixteen. She also happens to be Ms. Fanservice and have Gag Boobs, yet still manages this title.
 * Then there's the whole (and her playful refusal to answer any of the Genre Savvy Kyon's inquiries about the matter), which makes her real age pretty much impossible to determine. Given the possibilities of future medicine, she could be in her thirties for all we know.
 * In Welcome to The NHK, one of Satou's "study materials" (i.e. Eroge) has a cover with a big-eyed, small-chested girl... and the title of the game is actually "I Am Not Loli!"
 * There's a rather odd version of this in Zettai Karen Children where the White-Haired Pretty Boy Evil Mentor who looks like a middle school student is really in his 80s. This changes his stated intent to "groom" the titular 10-year olds from weird to squicky.
 * Let's not forget also the said evil mentor's childhood friend and Good Counterpart, three years older Fujiko, who looks and behaves like a horny teenage Kawaiiko, but notwithstanding her looks the titular "children" characters often call her "granny".
 * In the Eureka Seven manga, Matthieu tells Renton that "the thing about Eureka is...she may not look it, but she's actually 30!" much to Renton's shock. This is revealed to be a lie simply to get Renton's goat the very next panel.
 * Asuna Kagurazaka of Mahou Sensei Negima, who looks and is assumed by the people around her to be 14. It isn't clear just how old she is, but flashback chapters later in the manga have confirmed her to have traveled as a little girl with Nagi's company—twenty years ago . It should be noted that Takamichi, Asuna's adult teacher who also traveled with Nagi, was also a little kid at the same time.
 * It's hinted that Takamichi spent a lot of time training in Evangeline's time condenser, and therefore his actual age may not match his chronological age.
 * Also, Fate Averruncus and Zect Filius, the two White Haired Pretty Boys: While Fate apparently bathed in some Fountain of Youth, Zect is referenced as a "man" despite looking way younger than "Just a little brat" Nagi. And nobody finds this weird, so it may be a racial trait or something.
 * Then we've got the normal (we think) girls like the Narutaki twins, who look ten years old despite being around fifteen like the rest of the class. They're actually the oldest, other than the vampire and ghost. Likewise, the oldest-looking girl (Chizuru) is actually the youngest.
 * Major Kusanagi in Ghost in the Shell is age 44 at the time she meets the Puppet Master/the Pupetter and a few years younger in Stand Alone Complex, but her almost completely artificial body looks noticeably younger.
 * And in one episode there's a female Russian assassin with a similar cybernetic body, who is said to be over 80.
 * Every single female character (and males, discounting Konata's dad) in Lucky Star. Puni Plush can do that for you.
 * The extreme cases fell on Konata, Kanata and Yutaka—their heights are 1.42 m, 1.43 m and 1.38 m respectively. The relation between this trope and Lolicon has been thoroughly explored: Kanata is the (deceased) wife of Soujiro, and Konata wore School Swimsuit to attract "people with special interests" in the Beach Episode, and when Yutaka lamented her lack of boyfriend due to being an ill fauxli, Konata told her that a lot of people are looking for her, should she not choose...
 * Yutaka's demeanor, and the fact that she and her interactions with Minami seem very familiar to another yonkoma-based anime with an actual child don't help her case—even the mangaka shouted that out when Yutaka introduced herself in front of the class, and gave her pigtails.
 * Cinque in Magical Girl Lyrical Nanoha looks like she's around ten, but she's one of the oldest members of the Numbers Cyborgs, and is officially the same age as Teana.
 * Fate's familiar, Arf, in the first and second season. She appears to be a grown woman, but since she was created by 9-year old Fate, she logically has to be younger than nine. Inverted in the third season when a ten year Time Skip means she actually is old enough to appear as a grown woman... and she looks like a child in order to conserve energy.
 * And in a less extreme example (also from the first two seasons), Chrono Harlaown looks to be roughly nine or ten years old, just like Nanoha, Yuuno, Fate, etc. In reality, he's fourteen.
 * Near from Death Note looked younger than twenty-one post-Time Skip.
 * Also L, who can blend in with a group of teenagers in his mid 20's.
 * Many don't realize that Misa is older than Light. The folks at Viz Media even make this mistake in one of the DVD commentaries. Justified in that her young looks are accompanied by extremely childish behavior.
 * Tsubasa Shibahime from Kare Kano is a high schooler like the rest of the cast, but looks like she's twelve.
 * Mitsukuni Haninozuka from Ouran High School Host Club looks and acts like a 10-year old to appeal to the Shotacon crowd, but is really 17/18 years old, and therefore, the oldest member of the club.
 * The joke is that his birthday is February 29, which comes around only once every 4 years. Since this is manga/anime, he only ages 1 year for every 4. Also, going by that logic, wouldn't the same go for his chronological age and he be 5?
 * Thorkell from Vinland Saga is a more realistic example then most but he still in no way looks like he's in his fifties.
 * Azuma and Seira Umeda from the manga series Hana Kimi, They both look pretty young despite the fact that Seira is fifty-one and Azuma is fifty-four.
 * The art style of Hidamari Sketch made everyone like this, but Yuno needs some specific mention.Her extreme proneness to childlike mood swings/general childish behavior and her 1.44m height made her seems more like seven than fifteen. Actually part of this series' premise was on her trying to grow out of this.
 * Komoe-sensei in A Certain Magical Index looks very young (no older than ten) and wears bunny pajamas to bed. Yet she is an adult, and her apartment is littered with beer cans and cigarettes. Quite a contrast there.
 * Yun-Ook Jang, the main character in Forest of Gray City is a 25-year old who keeps getting mistaken for a teenager.
 * The manga Double Arts pulled this on one of the main characters. She goes to meet a new found friend's family, and is introduced to a little girl she assumes to be his little sister. But wait! That's his mom!
 * A very similar situation to the one above happens in the manga Code Breaker, although this time with the female protagonist's mom, and the mom being a bit more endowed.
 * Rurouni Kenshin: Kaoru refuses to believe that the youthful-looking Kenshin is a whopping 28 years old, although that doesn't stop them from getting together in the end—even though Kaoru is only 17. Likewise, when Yahiko and Misao discover that Hiko is a remarkably well-preserved 43, they wonder if it's a side-effect of the Hiten Mitsurugi style.
 * And speaking of Misao, she's 16, but looks quite a bit younger, something that she doesn't react well to. One particular filler episode had all the female characters poke fun at this, even innocent little Tsubame, who is shocked that Misao is that much older than her.
 * Hinako Ninomiya, from the series Ranma ½. She has the appearance of an innocent child though she is actually much older. When she drains the battle auras of "delinquents", she reverts to her true age and becomes a buxom woman in her late twenties.
 * Also Lukkosai, from the Ranma ½ manga, who is the same age as Happosai but is cursed to turn into a little boy when splashed with cold water.
 * The manga Cardcaptor Sakura's, who though appearing to be around Sakura's age, is actually the same age as her father.
 * Tsubasa Reservoir Chronicle: Syaoran is subjectively around 21 when the series begins . He looks like a young teenager.
 * Angelic Layer's Misaki Suzuhara is of 1st year middle school age. Yet she gets mistaken for much younger, at one point elementary 3rd year, much to her shock.
 * A similar thing happened in Magic Knight Rayearth, another CLAMP series: after Hikaru stated that she was fourteen years old, Umi and Fuu were shocked (Hikaru was shorter than the other two by at least a foot), and one of them said that she thought Hikaru was still in elementary school.
 * In Inoue Kazurou's short story Aoi Destruction, the titular father of the main character is 38 years old, yet looks like a little girl. His late wife, in contrast was apparently quite masculine in appearance. The problem with that should be obvious.
 * Main premise of Detective Conan: Million-to-One Chance Fountain of Youth turning Teen Geniuses into Preteen Geniuses.
 * Hiroshi Agasa has fallen victim to this. He dislikes being called "ojisan" since he's only 53 years old.
 * Firo from Baccano! is, according to the novels, regularly assumed to be about three or four years younger than he actually is (eighteen and a half). Of course, now that he's taken the Elixir of Life, that disparity is only going to get bigger over time.
 * Pinoko from Black Jack looks no older than six, but insists that she's at least eighteen due to the very bizarre circumstances up until her "birth". . Black Jack, her legal guardian, argues the exact opposite.
 * God from Maria Holic came upon a long rotted love letter given to her years before, which looked to be pre-War Japan. She looks no different then than she does in the present, and since she looks to have been the dorm leader even then, she would have to be at least 70 or 80. Also, Yonakuni.
 * In Mahoromatic Suguru's teacher is shown to look exactly the same at the series end as at its start . This kinda begs the question; how old was she at the series start?
 * in Chrono Crusade. In the manga it's because he's had experiments performed on him, in the anime he's some sort of fallen angel. Chrono and the other demons somewhat count, although in their case it's closer to Really 700 Years Old.
 * Two of the Sannin in Naruto have this; Tsunade uses a transformation jutsu to keep herself looking like she's in her late twenties or early thirties (however, the use of her other jutsu makes her appearance without it appear even older than she really is). Orochimaru's body-switching jutsu causes him too look like he's still in his early-to-mid-thirties. Both are between 50 and 53 years old. Jiraiya presumably doesn't use any jutsu to keep himself looking young, as he is the only one who looks his age.
 * Ahem- have you seen him shirtless? I wouldn't exactly say he looks his age; guess he just got lucky.
 * In the third movie, Sakura fights a female assassin named Karenbana who appears to be about 12. When Sakura says to her, "You wear too much perfume for a kid", she replies with, "Kid? I'm twenty-two!" to which Sakura replies, "Oops!"
 * Jugo temporarily looks like he is several years younger after ..
 * Sasori is 35 years old. But because he modified his body to become an unaging puppet, his physical appearance is that of a 15-year old.
 * While it could be probably attributed to the animators, the pioneer shinobi such as Madara Uchiha and Hashirama Senju look far into their late 30s for people who already have grandchildren.
 * Alicia from Aria is 19 years old and pretty much looks that way, which doesn't match well with her supposed long experience as an undine. She lives on Mars though, where the years last almost twice as long as earth's. Do the math.
 * President Aria from ARIA. 20 years have passed and he doesn't look any different, unlike Grandma, who has considerably shortened.
 * Played even straighter by Albert Pitt, who, while one of the eldest members of the main cast, looks like a cute little boy due to his working conditions.
 * Loco from MÄR is thirty-two years old, despite looking like she's somewhere around ten. This is because the Darkness Arms she specializes in de-age her every time she uses them. At one point she ends up de-aging herself into infancy.
 * Dragon Ball: The Saiyans, by time they're in their twenties, still look like teens or preteens, and it isn't until well later on in the series that they're looking like adults (though Vegeta goes through this relatively quickly). Even to the degree that in DBGT / Late DBZ it gets highlighted by Vegeta, saying that he might be in his 50s, but he ages slower than the rest of the cast. Bulma does not enjoy this.
 * Also in DBZ/DBGT, Chichi complains of Goku's slowed aging, and is completely horrified after the events of the first DBGT episode.
 * A specific example of this is Nappa, who looks like he's about 25 in Saiyan Saga when he's really 50.
 * And, they also went through training in the hyperbolic time chamber, wherein 365 days inside would be a mere 1 day on the outside, making future Trunks, Vegeta, Goku, Gohan, Trunks, and Goten all at least 364 days older than the rest of the characters.
 * And there's Chaozu, who during his whole lifetime looks like a 10-year old child. By the time of his last major appearance (the Cell saga) 12 years had passed since his debut and he still looks like a child.
 * Kind of explained in that his original design was based on a traditional Chinese ghost.
 * In the original Dragon Ball Goku looks around seven when he's twelve and at age fifteen he looks more-or-less the same.
 * A non-human/Saiyan example might be Frieza. Between flashbacks to the Bardock Special, which occurred at least twenty+ years ago, to the present, he hasn't visibly aged a bit.
 * In Black Cat, because of being shot with a nanomachine Lucifer bullet, Train transformed into a kid (that looks around 7–8 years old), even though he's actually 23.
 * Ranewater Calder from Zombie Powder, leader of the Ash Daughter Gang. Although he looks like a young boy, is actually an old man who manages to retain his youthful looks with Phoenix-Samin. His nickname is actually "Old Man Calder".
 * Mikako Koda from Paradise Kiss is around fifteen years older than her sister Miwako, and they both look like twins.
 * In the anime of Venus Versus Virus,
 * In the original manga, they're just normal girls.
 * Break and Sharon from Pandora Hearts don't age and are at least ten years older than they appear. . There's also Zwei. Another example is Rufus Barma, who appears to be in his twenties or thirties despite actually being over seventy years old.
 * Given the bizarre way that time works in the Abyss, most of the cast actually falls into this. Apart from the above examples, there's
 * In School Rumble, Yakumo is calm, mature, and the object of Hanai's affection. Tenma is short, Moe Moe, acts childish, and has Expressive Hair. Try and guess which one is older.
 * Seguchi Tohma owns this trope. He's 32 but looks 16. In the flashbacks where he's supposed to be 16, he looks twelve. Same problem appears with a bunch of other characters in Gravitation as well.
 * In Digimon Frontier, Kouichi's mom looks more like his sister.
 * Yugi's childlike appearance is a source of comic relief in both the Yu-Gi-Oh!! manga and the first series. He's supposed to be sixteen years old. He looks about ten. It's played with even more when you consider his child-like innocence, and how physically vulnerable he is compared to everyone else in the cast. It also bugs him a lot when people mistake him for a grade-schooler.
 * Lampshaded in Yu-Gi-Oh!: The Abridged Series, where he says that he looks like he's 10 and that Serenity, who is about 12 to 14 years old, looks like she's 16.
 * Yuuki of Saki. First year high school student who plays the role of Token Loli since she still looks like a kid. Koromo is even worse, she's manages to look even younger than Yuuki despite being one year older. In fact, Koromo's the oldest member of the Ryuumonbuchi team.
 * In NEEDLESS, Disc is . When this is pointed out in episode 7, Adam is less than pleased.
 * The age of from D.Gray-man is revealed in chapter 187 to be
 * Yellow from Pokémon Special. All the Johto Dex Holders have a hard time believing that someone a foot shorter than them is in fact a year older.
 * Magical Pokémon Journey has Ginger, who introduces herself as Coconut's sister. She appears to be around 16, which makes her overtones with Grandpa really really creepy...until.
 * Momiji from Fruits Basket looks and acts like an elementary school kid. When Tohru finds out that he's going to go to her high school, she is shocked.
 * He eventually goes through a growth spurt, and becomes as Bishonen as the rest of the boys (if not more).
 * Souichi Tomoe, Hotaru's dad in Sailor Moon, is in his late thirties, but looks at least a decade younger, not appearing to age since the incident where Hotaru almost died. Whether it's due to Germatoid's possession's effect or it's just because he's a Hot Shoujo Dad, it's unknown.
 * We aren't privy to her real age, but Athena of Hayate the Combat Butler appears to be the same age as the main character, but the time where she's been staying for the years before her appearance has a different standard of time. When she shows up in the current time, she looks to have aged appropriately since she's been locked out of the castle.
 * She also acted rather like an adult back when she was supposed to be six.
 * And her mindset is from even further back. The mindset she instilled in Hayate.
 * And now she's back at her 6-year old appearance while even only given the years we've seen makes her at least 16.
 * Miyu from They Are My Noble Masters looks extremely young for someone in her early twenties—which actually causes her sister Shinra to be attracted to her.
 * The Blade Children of Spiral are all the same age, that is, 17... yes, even Rio. She actually uses her youthful, cute appearance to make unwitting enemies underestimate her. (And by the way, although he looks more his age, Eyes is the youngest of them all, despite being the second tallest of the main five and possibly the most intimidating.)
 * Amber in Darker than Black looks like a teenager. This is because her remuneration is Merlin Sickness; a flashback to five years earlier shows her looking twenty-something. We have no idea how old she actually is.
 * Bokusatsu Tenshi Dokuro-Chan primarily parodies the trope. Dokuro-chan was sent by God to kill Sakura (or make his life worse than Hell itself, YMMV) for the crime of giving humanity immortality. Why? The catch is that all women stop aging at 12, making it a pedophile paradise.
 * The main characters in Otogi Juushi Akazukin (a.k.a. Fairy Musketeers) look more like 7- or 8-year olds than 14-year olds.
 * Juushi could be a pun. In the title, it means "musketeer", but juushi—using different kanji—means "fourteen".
 * Kazan, from the manga of the same name hasn't aged a day since he encountered a water demon. When the story begins he's been 6 for 10 years.
 * Nono from Yotsunoha falls under this when the gang gets back together. Unlike her friends she barely grew over time.
 * Played straight and inverted in Popotan. The girls skip through time, which means anyone they befriend will have aged twenty years or more by the next time they meet—even though they themselves aren't actually any older. Played straight when
 * Katsuo of Yakitate!! Japan. When he first appears in the Newcomer Exam, everyone assumes he's a child because of his small stature and boyish appearance. When he makes it to the semifinals, his wife appears to cheer him on, and he reveals that he's actually 31.
 * Goku of Saiyuki is Really 700 Years Old, but is only physically 18 because . This trope also comes into play, though, since he doesn't even really look 18.
 * Hope Stelar, Geo's mother, in Mega Man Star Force looks more like an older sister. Then again, Geo's only ten or eleven, so she can't be too old. She looks older in the game.
 * Taiga from Toradora! - being shorter than her classmates and of ... slim figure ..., the "Palmtop Tiger" looks younger than her classmates.
 * Mina Tepes from Dance in the Vampire Bund is, like most vampires, a definite example. The only question among fandom is how much older she is than the tween she appears to be (lowball estimates place her at her early to mid twenties, while other hints indicate she is at least on the far side of ninety).
 * Meiko Rokudou from Ghost Sweeper Mikami comes to mind. For most of the manga's run, her insecurity, cutesy look, and the nature of her crush on Mikami could easily make a reader think that she's anywhere from 17–19 years old (Mikami's 20-21). Then, in one of the last story arcs, we are shown Meiko's mother while she's pregnant with her. The thing is that this is the beginning of the story arc describing how Mikami's parents met. So Meiko's probably 22-24...
 * V.V. from Code Geass looks like a child, due to immortality, but is actually in his sixties.
 * All the girls from Sky Girls appear to be about 12, though in reality they're aged 15 to 17.
 * Also, the twin mechanics Haruko and Ranko Mikagami are supposed to be older than Ryohei.
 * Luffy from One Piece, the 17-year old hero. He looks older when he is serious (and in some of the earlier arcs he was drawn with a mature look) but with his short stature, big round head and eyes, big mouth and small nose it's hard to believe he is much older than 10 years unless you know better. Doesn't really help on the age estimation that he is also an Man Child.
 * After the Time Skip he is now 19, but looks like a 10-year old as much as ever.
 * "You try getting wrinkles being made of rubber!"
 * Martel in the 2003 anime version of Fullmetal Alchemist looks like she's in her 20s but is actually old enough to be Ed and Al's mom. She has a lot of snake venom to clear her wrinkles.
 * Al is one year younger then his brother, but during The Movie he looks thirteen while his brother is an adult.
 * Justified by the fact that in this version of the story, Al's physical body didn't age at all while inside the Gate. Because he spent 4 years without it, he was thus only 11 years old physically when he got it back and 13 in the movie (5 years younger than Ed).
 * The Affably Evil priest Rezo from Slayers is the century-old great-grandfather of one of the protagonists, Zelgadis; aside from the two barely-noticable boney lines under his eyes, he looks to be more in his late forties or early fifties. Lina lampshades this when he appears in the first Light Novel, describing him as looking "both young and old at the same time."
 * A non-human example would be Hellmaster Fibrizo, who is both the oldest and strongest of the world's five Demonic Lords. He disguises himself in the form of an androgynous young boy in order to decieve people.
 * And from the fourth and fifth seasons of the anime, Pokota the prince has the voice and the demeanor of a 10-year old. In reality, when his kingdom was struck by a plague about a decade before the series proper, his then 10-year old body was sealed away (along with the rest of the country's citizens), and his soul was placed in a stuffed animal. Realistically, he should be a bit older than Lina.
 * In Bakuman｡, Natsumi Kato looks like a high school student or young college student, but she's actually around 30.
 * Katekyo Hitman Reborn invokes this trope with all of the Arcobaleno.
 * 14-year old Shinji Ikari from Neon Genesis Evangelion looks 12 or younger.
 * His guardian Misato is stated as being 29 years old, but she could pass for an in-universe 18-year old (or even younger, if not for her height and figure).
 * Simon of Tengen Toppa Gurren Lagann. He's actually 14, but his stature and attitude makes him look at most 12.
 * Then there's Viral who
 * Ryouhei Sumi from Future GPX Cyber Formula looked like he's a little kid, but he is in fact 15 (at the beginning of the series) making him a year older than Hayato, the main character.
 * White from Tekkon Kinkreet by the way he looks and acts you'd think he was about 5 years old but he's 11.
 * Nene from Bubblegum Crisis: Tokyo 2040 is rather short and undeveloped, and tends to act like a young teenager rather than the 20-year old woman she is. It seems to be her Berserk Button, if her reaction when she flirts with her boss (His reply? “I don’t like little kids”) or when 15-year old Makkie comes onto her is any indication.
 * Reiji Miyabi (aka Head) from Star Driver appears to be about 15 to 17 years old. Flashbacks to the time when he suggest he's at least twice that age, if not much older.
 * Yuka in Kemonozume is about 30, but looks like she's in her early-to-mid twenties. She seems pleased when someone correctly guesses her age.
 * In the original Cutey Honey, the shape-shifting android Honey was Younger Than She Looked (supposedly 16 but was probably built more recently than that). By the time New Cutey Honey came around, she looked a little older (early- to mid-twenties, probably voluntary aging from her powers), but being over a hundred years old, she had moved to the opposite trope.
 * Natsu from Fairy Tail is hinted to be this. During the Fighting Festival Arc, ... but the confusing part is that he's shown to have grown up normally in the past few years..
 * Wendy, whose age is confirmed, is usually a more straight example. Does this look like a 12-year old girl to you? On the other hand, she ironically inverts the trope in some of her Let's Get Dangerous moments where she actually more looks like a teen Pettanko.
 * Sun Otonashi in Rosario + Vampire looked like a middle schooler more than a year after graduating from high school.
 * Tooru from A Channel is 16 and in high school, but due to her short stature she looks considerably younger.
 * Hanabusa Seki, Thobari's girlfriend, of Nabari no Ou. She's 40...
 * Atsumi from Recorder and Randsell is 137cm/4'5 feet tall and looks exactly like an 11-year old kid.
 * of Blood C.
 * The title character of Acony has the body of a twelve or thirteen year old girl, but claims to be 23. Her high school aged neighbor laughs at this, saying that if she's going to lie she should go all out and say she's Really Seven Hundred Years Old, but as far as anyone can tell it's actually true.
 * Okashi Nako of Poor Poor Lips, who looks like a kid despite, well...
 * Okashi Nako of Poor Poor Lips, who looks like a kid despite, well...


 * The protagonist of Kuroneko Guardian is 13 but could pass for a 9 or 10 year old.
 * Although it's paired with Really 700 Years Old in their case... for characters who represent nations, the cast of Axis Powers Hetalia doesn't seem to be a day older than 25 at most. Especially blatand example? China.
 * Hitsugi Kirigaya from Akuma no Riddle was mistaken for a grade-schooler by Haru early on,
 * Kirameki Project: Kana looks to be the youngest of the three princesses (being mistaken for a 12-year-old at one point), but is actually the middle sister.
 * Tenchi Muyo!: By her own choice, Washuu looks younger than her daughter Ryoko. She also insists on being called "Washuu-chan" (in the dub, "little Washuu"), adding to the effect.
 * In Yu-Gi-Oh! SEVENS, this is the whole "joke" with Mimi Atachi, she looks no older than the tween protagonist, she is actually 37 years old, and even has a 10-year-old son. As a member of the Goha Corporation, she is used by their leaders as an undercover operative, posing as a student in order to spy on Yuga and his allies.
 * Nakano Chisame of Bakuon!! is actually 16 years old when she joins the cast, but she's 144cm (4'8.5") tall, almost flat-chested, and basically looks like a 12-year-old.
 * All the other girls assume that Kawasaki Raimu is an upperclassman, no more than a year or two older than themselves. She's actually in (at least) her thirties and is less a member of the club than an unofficial faculty adviser.  The confusion about her age is aided by the fact that she never takes off her helmet, keeps her hair in pigtails, and has surprisingly girlish body language.