* Literature/{{Hottie}} in FanFic/Hottie3TheBestFanFicInTheWorld, nuff said.
** UpToEleven in the sequel "Hottie 4: Even Better Sequel".
* The Lady Knight in ''Fanfic/ChildOfTheStorm'', a human woman (albeit immortal) who hasn't appeared on screen, but has cast a shadow over proceedings. She taught most of the major badasses in history how to fight. Cuchulainn? Taught him. The Argonauts? Taught most of them. RealLife badass William Marshal, the greatest knight? Taught him too. She even took Sif and Fandral under her wing and turned them into [[WarGod the Goddess of War]] and the [[MasterSwordsman finest swordsman in the Nine Realms with only Sif for a peer]] respectively. She was also the best of Arthur's court: yes, even better than Lancelot. No one really knows anything about her, beyond the fact that she's epically badass, trapped on TheSlowPath (save for intermittent time jumps) and probably something of a HurtingHero by now - though she hasn't been seen since the 18th century.
** And more prominently, the Winter Soldier. Pretty much the entire cast, both good and evil, is either starkly terrified of him, or, at the very least, regards him with a kind of wary respect. Pretty much every time he makes an appearance, he very much lives up to his rep.
** Doctor Stephen Strange. Lots of characters in various media are either TheArchmage or a MagnificentBastard. Strange is ''both.'' He plays ''every single character'' in the series like a harp, with the exception of [[spoiler: Sinister,]] because the latter is blocked from Strange's foresight, and even he can only do so much with the Endless - though he still seems to be able to get them to do pretty much what he wants. He even gets a mention in the [[{{Pantheon/Magic}} House of Magic]] and is an accredited member of the OmniscientCouncilOfVagueness. Oh, and he's a time traveller.
*** On the occasions when he gets his hands dirty, well, he dueled a PhysicalGod Dark Wizard to a standstill and defeated a HumanoidAbomination ''while multitasking.'' This, by the way, is on top of his normal job as Sorcerer Supreme, which job description basically entails scamming and/or beating up {{Eldritch Abomination}}s.
** Harry Dresden, as per canon (see the Literature page), whose reputation is given a spectacular boost after his duel with Gravemoss under Paris, which ended with Dresden [[TakingYouWithMe unleashing his Death Curse]] in the form of a vast column of flame that jetted over a thousand feet into the air and launched Gravemoss from under to Paris to the North Sea, several ''hundred'' miles away. And, impossibly, he survived (well, to be exact, [[spoiler: Strange]] saved him). While Dresden sees himself as more of a BadassOnPaper, discussing the trope in his internal monologue, his rematch with Gravemoss during the Battle of London, which was caught on camera, and resulted in Dresden forcing Gravemoss - who is in the same weight class as freaking ''Loki'' - to run for his life, only burnishes that reputation.
** Harry Potter/Thorson, meanwhile, has a rapidly growing reputation, partly because he is the Boy Who Lived, and partly because he is the Boy Who Continues To Live No Matter What Is Thrown At Him - no matter whether he's being attacked by Death Eaters, Basilisks, Dementors, Voldemort, the Disir, the Slendermen and HYDRA's Werewolves, Project Ultimatum, Daken, armies of HYDRA troops both muggle and magical, Gravemoss, the Elder God Chthon, Voldemort again, the Death Eaters again, [[spoiler: Sinister]], [[spoiler: Dudley a.k.a. the Blob/the Beast]], [[spoiler: Maddie Pryor/Rachel Grey]], the Red Room... one way or another, no matter how outclassed or outmatched he is, he'll come out the other side intact - and increasingly on top, as he gets stronger, more skilled and savvier. Which is generally more than can be said for whoever's gone up against him. Or whatever's left of them, anyway. After the incident with the Red Room, Draco Malfoy, who's been quietly, and with reasonable accuracy under the circumstances, deducing what's happened, flatly states that there are very few organisations he can think of capable of containing Harry, and they're mostly supernatural superpowers (like the White Council, pulling out all the stops, or one of the Fae Courts), and HYDRA at the very height of their powers are the only one he can think of that would be mad enough to actually try (he doesn't really know much about the Red Room). And none of that takes into account [[spoiler: the Phoenix.]]
* Mr. Black in ''Fanfic/MakeAWish''. "Whoever caught the rabbit first would get the title of the best and be given the job of tracking down all the death munchers. Umbitch took one look at the forest and concluded that rabbits don't exist. The Aurors went in with fifty men and came out with ten . . . having fought a great battle with the rabbit and barely escaped with their lives. And Mr. Black . . . he didn't even bother to show up . . . three days later, the rabbit died . . . of 'natural causes.'"
** Don't you mean that the rabbit died . . . in an 'accident'"
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fanfic ''[[https://www.fimfiction.net/story/3378/the-moonstone-cup The Moonstone Cup]]'' features Twilight becoming this in-universe.
-->''"Yeah! Twilight Sparkle!" The gryphon went on, oblivious to Twilight's nervousness and Pinkie's Pinkieness. "She's an alicorn sorceress from Manehattan. Purple, kinda like you." The large gryphon leaned her head down and lowered her voice, conspiratorially. "Rumor going around the aeries is that she's actually another sister of Celestia and Luna and the Manehattan story is just a cover. You really didn't know about this?"''
* [[Fanfic/HalfLifeFullLifeConsequences John Freeman]] who was [[VideoGame/HalfLife Gordon Freeman's]] brother, who was one day in an office, typing on a computer.
* [[Fanfic/DeliverUsFromEvilSeries Mortality]] [[BadassAdorable Watson]] is most definitely this. In one chapter, it's implied that A LOT of villains are freaked out by him ''because'' they know that they shouldn't mess with Holmes if Watson is helping him out.
** Basically, they know that [[NiceGuy this gentle guy]] ''will'' [[DeadlyDoctor cause you a life of SERIOUS agony and pain]] if you screw with his [[LivingEmotionalCrutch friend.]]
** "''No evil would touch him while [[TheChampion Watson]] [[UndyingLoyalty stood guard.]]''"
* ''[[https://www.fanfiction.net/s/10138926/1/AOT-Skits-Mikasa-The-Resident-Badass-and-More AOT Skits]]'' depicts [[Manga/AttackOnTitan Mikasa]] as a beloved hero who singlehandedly kills ''all'' Titans.
-->'''Author:''' I could write an essay on why Mikasa isn't a MarySue. I just wanted to [write the fic] because she's a total badass.
* Several MLP fics that somehow have [[WesternAnimation/MyLittlePonyAndFriends Megan]] return to [[WesternAnimation/MyLittlePonyFriendshipIsMagic modern Equestria]] have her discover ponies remember her as an utter badass if not straight up divine. Granted, she ''is'' a badass, just a BadassNormal.
* PlayedForLaughs in-universe in ''FanFic/SonicXDarkChaos''. After she stuns Astorath in battle, his fellow Hell Knights start spreading rumors describing [[BadassAdorable Cream the Rabbit]] of all people as a demon-slaying monstrosity who "pisses fire and eats planets".
* In ''Fanfic/{{Overlady}}'' the Minions tell tales of [[LightNovel/TheFamiliarOfZero Karin of the Heavy Wind]] such as how she "doesn't have fingers, only more wands" and "her bear skin rug isn't dead, it's just too scared to move".
** Louise implies the latter might actually be true.
* Literature/HarryPotter is considered a total badass by the day employees in ''[[https://www.fanfiction.net/s/11474098/9/Five-Nights-with-Harry Five Nights with Harry]]'' for managing to be the night security guard at Freddy Fazbear's for over a month.
** In Thirty H's, Harry is a guitar-playing eldritch abomination.
* ComicStrip/{{Garfield}}: fat, lazy, eternally-sleeping housecat by day. But when the night comes, if ''FanFic/GarfieldRoyalRescue'' is to be believed, he becomes a ripped, muscular, [[TestosteronePoisoning Testosterone Poisoned]] chiseled hunk of a superhero.