Two-foot geezers aside, body proportion in fiction can venture to the realm of the odd. One situation where this is obvious is with any post-pubescent person who is unusually short. For example, a dwarf has different proportions to people of average height but will still be identifiable as being a certain age.
However, perhaps due to the nature of cute designs, most artists will simply draw the character physically as a child. This also allows for any humor related to that, rather than specifically related to height.
Not related to literal dwarves. Well... not necessarily.
- The 27-year-old Mika-sensei in Doki Doki School Hours.
- Washuu in Tenchi Muyo! is sometimes confused for a child, although certain features of her body stay adult-sized. (Then again, she's chosen that body shape, and can assume a normal adult-sized form at will.)
- Despite being 18 years old, Hagu in Honey and Clover is inexplicably drawn as if she was a little kid for reasons never explained or brought up by the characters.
- The wizard Clef in Magic Knight Rayearth. But point that out at your peril.
- Komoe-sensei, Touma's homeroom teacher in A Certain Magical Index. Characters have expressed curiosity about her diminutive stature but no answer has been forthcoming.
- Ymir from Queen's Blade is a literal dwarf who appears as a little girl.
- Yugi Mutou of Yu-Gi-Oh! is sixteen years old and five feet tall. In the manga he's mistaken for a grade-schooler at least once, and teased by an actual grade-schooler for not looking his age.
- Yutaka of Lucky Star was assumed by some of her classmates to be this, for being a 1.38m tall nice sweet girl. She however doesn't appear to like this kind of view as she knows Not Growing Up Sucks.
- Alice in Kiniro Mosaic is probably not particularly short among the large amount of short girls in yonkoma, but she's a pure English. In one strip Shinobu played this trope for laughs by comparing Alice to a doll. Alice was suitably freaked out.
- Likely the cause of Honey-senpai's shota appeal in Ouran High School Host Club. It is revealed in an extra one-shot that Kyouya had been giving him vitamins in order to stunt his growth, as they already had a "Dumb blond character" (Tamaki) and didn't need another one. Once he stopped getting the vitamins he grew 32 centimeters in two months. It's a dream Haruhi had, but still.
- One issue of the new The Muppet Show comics features what appears to be a baby abandoned on the doorstep of Muppet Theater, who spends the issue performing highly un-baby-like stunts. He turns out to be "Babyface Magoo: Midget Acrobat", the act that supposedly failed to show. His refusal to speak up until the reveal was because he'd been clobbered earlier and hadn't got all his marbles sorted out.
- The historical druid Asphodel in Rift (who actually was a dwarf) was mistaken for a little girl at least once. Which can probably be attributed partly to her being a Genki Girl, partly to the fact that Rift dwarf chicks are compact, big-eyed, and ridiculously adorable.
- Slick from Sinfest. Nobody actually knows how old he is, but one thing is for certain: He's really, really short.
- The eponymous character of Hanna Is Not a Boy's Name is 5'3", looks 14, and is 24. (See here.) He occasionally is drawn to look like a short, skinny adult, which is what he is, and Eating the Eye Candy in the comments section ensues. He does have sideburns and broad shoulders, but he also has big, round eyes, as seen panel 2 here, often looks far too adorable to be an adult, and often wears clothing too large for him.