* In ''Fanfic/TailsOfTheOldRepublic'', Miles "Tails" Prower of ''Franchise/SonicTheHedgehog'' fame is now 14 years old, up from his canonical age of 8, and he can both kick ass and take names in ''Franchise/StarWars: VideoGame/KnightsOfTheOldRepublic''. When it's not trying to kill him, the technology he's surrounded with makes him drool like a kid at a candy store.
* ''FanFic/TheSecondTry'' has Shinji and Asuka becoming milder examples of this trope by necessity, since they had to accumulate and learn the sum total of human knowledge after they're left being the only two humans left alive on Earth, and are pigeonholed into being a civilization of two.
* ''FanFic/DumbledoresArmyAndTheYearOfDarkness'' shows just ''what'' happens when you get the Ravenclaws seriously riled up.
* In the ''Franchise/{{Pokemon}}'' story ''Fanfic/BraveNewWorld'', the first new addition to Team Aurabolt is a fat basement-dweller Squirtle with [[{{Cloudcuckoolander}} tenuous grasp on the]] [[MetaGuy difference between fiction and reality]]. He starts things off by pounding the crap out of the protagonist (who has already defeated entire armies) via ConfusionFu, proceeds to predict half the plot turns in the story, defeats homicidal demons via [[WebVideo/YuGiOhTheAbridgedSeries children's card games]] and a manifestation of the futility of life using ''nothing but logic'', stores entire arsenals in his shell, holds his own in direct combat, and generally embodies CrazyPrepared and CrazyAwesome.
* The protagonist/narrator of ''FanFic/TravelsThroughAzerothAndOutland'' fits this description.
* Yuuki Nagato of ''FanFic/SuzumiyaHaruhiNoSeitenkan'' is even more BadAss than the original Yuki Nagato.
* Tara "Green Shield" Strong from Roleplay/DCNation. Yes, she is a SnarkKnight first and foremost, but this is someone who has a Masters at 19, is getting her M.D. by apprenticing under Doctor Mid-Nite, and ''got'' her abilities by playing ProfessorGuineaPig on herself to try and prevent her [[CorruptCorporateExecutive crooked boss]] from taking credit for her work. She's even studying ''alchemy'' in order to better keep up with the magical trouble the JSA attracts.
* John in ''Fanfic/WithStringsAttached'' qualifies. In RealLife he was a voracious reader, and a songwriting genius. In ''Strings'', he's transformed into a guy who can fly and lift half a ton (though not at the same time) and given a magical charm that makes him powerful enough to lift a river. [[ActualPacifist Not that he actually wants to do anything to you]]--unless you fuck with him or the others.
** Paul and George probably qualify as well.
* Harry in ''Fanfic/HarryPotterAndTheInvincibleTechnomage''. Not only is he on his way towards being as brilliant as his adopted father Tony, he also gets regular physical training from Hell by ''Captain America''.
* In ''FanFic/TheAgeOfWingsAndSteel'', Cranberry uses her knowledge of ancient history to save the team's quest in the north.
* The ''FanFic/PonyPOVSeries'' has Twilight Sparkle, of course, but there's also [[BadFuture Dark World]] Spike, who's spent the last thousand years as Discord's slave doing pretty much nothing but read to pass the time, from which he's learned a number of fighting techniques.
* ''FanFic/HarmonyTheory'': Star Fall is a scholar, magic talent, spy and powerful (by modern standards) mage, able to use her abilities in a fight.
* Starr from ''FanFic/{{Pokeumans}}'', despite being seen often in her dorm reading, has certain moments of awesome. The best of which being when they infiltrate Pokextinction's Pine Barrows base.
* ''MyLittlePonyFriendshipIsMagic'': Princess Luna, from FanFic/NightmaresAreTragic and FanFic/AllTheWayBack, is one of the two strongest Alicorns in Equestria, a highly-skilled mage and mistress of numerous weapons and fighting styles. She is also extremely knowledgeable in science, technology, history and the arts.
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