* [[TheFlash Bart Allen]], or at least when he was Impulse and not Kid Flash. He's now regained all of his hyperactivity as Kid Flash after coming BackFromTheDead in the ''[[ComicBook/{{Legion of Super-Heroes}} Legion of 3 Worlds]]'' arc.
* Younger versions of [[SpiderMan Spider-Man]] can be this, especially [[ComicBook/UltimateSpiderMan the Ultimate 'verse one]].

* Bo Baker from ''Film/HighStakes'', who is also a {{Bishounen}}, [[CuteClumsyGirl Cute Clumsy Boy]] and ThePollyanna.
* Ensign Chekov, Pavel Andreivich in ''Film/StarTrek'' (2009) can do zat.
* Dash from ''WesternAnimation/TheIncredibles'', partly due to his SuperSpeed, can be one of these at times. [[AnnoyingYoungerSibling Needless to say, his sister usually doesn't take it well]].

* Cullen from ''Literature/ABrothersPrice'' is very excitable, and can't keep a dignified look on his face for more than ten seconds - when the protagonists meet him all dressed up for a ball, he ruins the impression by making grimaces.
* Tasslehoff Burrfoot from the ''{{Dragonlance}}'' series. In fact his entire race is pretty much this. The kender as a race never experience fear without massive magical power. Even dragons don't bother them.
* ''Literature/HarryPotter'': Colin Creevey, Colin Creevey, ''[[UpToEleven good Lord]]'', Colin Creevey. A extremely hyperactive, and ''extremely'' persistent FanBoy of Harry's.
* Sometimes, [[Literature/VorkosiganSaga Miles Vorkosigan]]. Very short, hyperactive, doesn't know the meaning of "impossible", charm on overdrive, and if not ''handsome'' exactly, manages to attract various tall, beautiful women through sheer personal magnetism. He does have troughs that match the peaks, unfortunately for him.
* Nahruahn from Literature/TheQuestOfTheUnaligned fits this trope perfectly from the moment he appears, in which he delivers an eleven-line speech in a single sentence (and breath). All [[BlowYouAway ruahks]] act like this to a degree.