* Austin Moon from ''AustinAndAlly''. Minus the "small" part (his actor was 6' tall by age fifteen).
-->"I'm Austin, and I like pancakes!"
* Andrew from ''Series/BuffyTheVampireSlayer'' embodies this trope.
* Jonathan Mangum from ''DrewCareysImprovAGanza'' is a good example of this trope. Despite being 40, he is often thought to be the youngest performer due to his constant usage of this trope.
* ''Creator/DavidArquette'', who always seems to be freebasing sugar. He's fully capable of playing serious roles, though he's more famous in the "hyper" persona.
* The Eighth, Tenth (provided he's not brooding) and Eleventh (even when he ''is'' brooding) Doctors from ''Series/DoctorWho''.
** And [[Creator/JohnBarrowman Captain Jack "Anything that moves" Harkness]].
* Boober Fraggle, ''FraggleRock'''s resident [[TheEeyore Eeyore]], has an [[GollumMadeMeDoIt alter-ego named Sidebottom]] who is a textbook example of this trope.
* Kido Shinji from ''Series/KamenRiderRyuki'' is almost certainly the Keet-iest of all the Kamen Rider main protagonists. (Probably for the best considering that he resides in a [[CrapsackWorld Crapsack]] [[BlackAndGrayMorality Black And Gray Morality World]] that has a very high [[KillEmAll death quotient]] [[spoiler:up to and including Shinji himself]]).
* ''{{Nobuta Wo Produce}}'' has the hyperactive touchy rich-boy Akira as its Keet.
* ''{{Pee-Wee Herman}}'' embodies this trope.
* Ziggy from ''Series/PowerRangersRPM'' (counterpart of Hanto, below) fits this rather nicely, as well as CloudCuckooLander.
* JD from ''Series/{{Scrubs}}''. One of the personality traits Dr. Cox likes to mock him for the most.
* Ky Lee from ''Series/TheLibrarians''.
* Ban from ''Series/TokusouSentaiDekaranger'' takes the [[HotBlooded standard anime personality]] for TheHero to galactic proportions. He's ultra-loud and ultra-hyperactive 24/7. He doesn't ''appear'' to be shorter than his teammates, but it's hard to tell: he never stands still long enough for one to compare height.
** Jan from ''Series/JukenSentaiGekiranger''. He's the purest example of this trope (that's not Shuichi). Ever.
** Hanto/Go-on Green in ''Series/EngineSentaiGoOnger''
* ''Series/WizardsOfWaverlyPlace'' has Zeke. He was once compared in-show to a hummingbird.
** Don't forget "Bouncing Chipmunk."
* Jeremy from the Korean drama ''You're Beautiful'' fits this trope to the letter. Unfortunately, he's [[SadClown not always happy as he seems]].
* ''Series/PrettyGuardianSailorMoon'' portrays Motoki this way. His best friend in the world is a pet turtle named Kamekichi, he always smiles and he doesn't quite know the meaning of subtlety.
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