Fan Works writers love to make their favorite characters far more badass when they're the ones writing them.
- Stephanie Brown in Macushla. After her father is killed for unknown reasons by the League of Shadows, she's taken to serve under Talia al Ghul. She's a master assassin before she's 18 years old and becomes Damian Wayne's bodyguard/Morality Pet. (After Talia fakes Stephanie's death and sends her away because she and Damian were too close, he leaves the League and asks to join Dick Grayson of his own will).
- Minor character Salvatore Maroni gets this in Batman Revisited, as he is the supervillain Firefly here, and considered a dangerous enough threat to be locked up with Deadshot and Killer Croc in a maximum security wing of Blackgate Penitentiary.
Battle of the Planets
- Security Chief Anderson in the Battle of the Planets:2163 arc gets an upgrade to badass on the grounds that you don't get to be the Chief of Galaxy Security by being a nice person. He carries a gun and isn't afraid to use it, to the consternation of his staff. He's also The Snark Knight which is an extension of some of his better lines in the actual series.
The Black Cauldron
- A Protector's Pride: Ichigo starts the Arrancar arc with access to his Hollow powers. All the the good guys in general are a lot smarter and pragmatic than in canon, especially Chad and Orihime, who are not useless.
- White drastically powers up the Espada. Eight of the ten are Vasto Lordes and those who were Vasto Lordes in canon are generally more skilled and/or powerful from training with White/Ichigo.
- Apacci, Loly, and Menoly are each barely weaker than the Ninth Espada due to having eaten Yammy prior to becoming Arrancar.
- Ayon is considerably more powerful (requiring multiple Sternritters to fight) because not only is he composed of five arrancar rather than three (Apacci, Loly, Menoly, Mila Rose, and Sun-sung), but they pull off a full Fusion Dance to create him rather than tear off their arms and combine them.
Calvin and Hobbes
- In the original anime, Lelouch had plenty of courage and was good with a gun, but him being out of shape was a Running Gag and he didn't stand a chance in a fistfight. In Code Geass: The Prepared Rebellion, he's much more athletic and quite proficient in martial arts.
- C.C. is outright superhuman in The Black Emperor because she can consciously push her body past its normal limits and heal off any damage as it occurs. Likewise, Lelouch is actually fairly athletic and highly skilled with his Blade Below the Shoulder.
- Later chapters show Milly's a skilled marksman and gains a geass for herself in the second chapter.
- Euphemia not only gains her own geass but is also an observant and intelligent commander from her years following Cornelia from battlefield to battlefield.
- In More than just a Man both Lelouch and C.C. are more physically capable than canon. Lelouch is only slightly better, though with far superior hand eye coordination (being able to disable a Knightmare by shooting it's factosphere with a pistol), due to being a newly turned vampire. Meanwhile C.C. is far more physically capable given that she's an over two thousand year old vampire who has every Geass ability displayed in canon (here, they're vampiric abilities).
- Euphie is generally seen as an All-Loving Heroine who is ultimately Too Good for This Sinful Earth, but there are fics that change things up a bit for her:
- A Cold Calculus has her start out as Britannia's exchequer, rooting out corruption and sneaking away resources for her, Cornelia and Schneizel to use in a planned coup against Emperor Charles. Later, she becomes a political powerhouse in Japan and successfully de-fangs the resistance movements with effective policy changes and hearts-and-minds campaigns, and would have won the country without a fight if it weren't for the EU. And in the second half, after becoming Empress of Britannia, she prosecutes a war of vengeance on the EU that is sure to end in her victory and all negotiations essentially boil down to her asking them "Just how badly do you want to lose?"
- Rise of a New Moon has her as a supporting character, but one who starts out the story as having joined Camelot as a test pilot, having wanted to flex her skills after being taught by Cornelia. When the Blood of the Samurai attack the capital, she takes to the field with Suzaku and defends Ashford Academy.
- Both Sayoko and Jeremiah in Darwin undergo multiple surgeries upgrading themselves with cybernetics. While Jeremiah is a hulking figure with a titanium skeleton and massive muscles, Sayoko had her nervous system upgraded, greatly increasing her speed and reflexes. Both also have bulletproof skin and cybernetic eyes with a plethora of features.
- Kallen gets a cybernetic implant that allows her the directly interface with a Knightmare frame. Rather than using the controls, she pilots the Knightmare with her thoughts.
- Several background ponies get turned into much more effective fighters in Ace Combat: Equestria Chronicles. Especially those flying in the Mirage squadron.
- Remember how Yuuno was in Lyrical Nanoha? In Blood That Flows, he's easily as badass as any of the main characters and can hold his own against Gods and Demons just as well as any of the other characters in the story.
- In the stories written by Crossoverpairinglover on Fanfiction.net, virtually every character gets upgraded to a point they are badasses. Genuine Lockharts, super saiyan-like Sakuras, Apollos who create black holes, etc.
- Jack in Cave Story Versus IM Meen, to the point where he becomes a Badass Bookworm who literally has the ability to use fucking ZA WARUDO.
- Children of an Elder God: The three main characters are a bit more heroic and way more badass than their canon counterparts. Shinji pilots his giant robot willingly and gains powers, Asuka becomes a better fighter and gains fire powers, Rei is terrifying...
- While Shelly De Killer was always a skilled assassin, his combat skills get a huge boost in No More Turnabout, being able to hold his own against the likes of Henry Cooldown and later on, Travis Touchdown, nearly killing the latter had Sylvia not intervened.
- While Taylor Hebert was already badass in Worm, she ups her badassery by several orders of magnitude in The Last Daughter, where she is actually Kryptonian. Virtually every fight she's in is a Curb-Stomp Battle in her favor, and she actually manages to kill Behemoth.
- The main Digimon characters from Digimon Fusion Kai are given the ability to become beings that look like Super Saiyans.
- While in Mahou Sensei Negima!, Ayaka was a self-taught martial artist with her own personal form, she was only Asuna's equal up until Can't Catch Up took effect. In Equal & Opposite Attraction, she becomes a front-line fighter who was trained by Setsuna.
- Arctic Rim does this to Anna and Elsa, the former becoming a hilarious badass and Elsa becoming a bona fide Badass in Charge. The Precursors are also a lot more proactive here than in Pacific Rim, with one in particular (the story's Big Bad) who borders on Magnificent Bastard.
- The Games We Play turns Jaune from Butt-Monkey to legitimate badass via the mechanics of The Gamer. In canon, he's far, far behind any of the other main cast. Here, he's able to, among others, beat Weiss, turn a Delaying Action against Penny into a win, fight Pyrrha to a draw, bluff his way out of fighting Cinder Fall, and outfight Raven. And he hasn't even gotten into Beacon yet!
- The Heroes of Time does this to the Hanna-Barbera universe. Most of the characters in the shared world are rather peaceful people, and never mean harm. But when The Heartless invade and start swallowing worlds, it's time to take up Keyblades and fight.
- In Hottie 3: The Best Fan Fic in the World, the Fan Sequel to the novel Burning Ambition by Jonathan Bernstein, Hottie co-pilots her own Tengen Toppa Gurren Lagann-inspired Gunman. The other co-pilot is Squirrel Girl hersel. She later gains three Super Modes, each more powerful than the last. The most powerful Super Mode, Super Hottie Goddess, makes her a Physical God.
- Just an Unorthodox Thief takes Risei, an intelligent enough character in canon, and tuns him into Tokiomi's Hypercompetent Sidekick.
- In Magical Pony Lyrical Twilight, the Nachtwal received a massive power and skill boost, including changing its canonical Clipped-Wing Angel into a proper One-Winged Angel.
- In Castlevania: Chronicles of Sorrow, the Chronomage was just a quickly defeated obstacle. In My Little Castlevania, he's an active villain, able to fight Aeon one-on-one repeatedly, and wins several times.
- No Gods, Only Guns, Ambassador Donnel Udina becomes a full-on Guile Hero, humiliating the batarian ambassador in front of the Council, and also possessing an eyepatch and cybernetic hand. Doctor Michel, usually a Distressed Damsel, takes a buzz-axe to the goons threatening her. And Niftu Cal, a volus who claimed to be a biotic god while doped out on drugs, proves himself to be a very powerful biotic who can back up his claims.
- In No Hoper, Light Yagami, a Non-Action Big Bad in canon, is now a vampire with powers over the elements, a Hunter of His Own Kind, and a Master Swordsman.
- Both Shinji and Kaworu in Shinji And Warhammer 40 K go from canon runty, troubled kids, to nigh-Physical God Magnificent Bastards who excel at Xanatos Speed Chess.
- While Naruto Uzumaki has grown into a powerful badass in his own manga, Shinobi of the High Seas turns him into a Showy Invincible Hero that manages to go through the Grand Line and ultimately fight Akoji, one of the most powerful admirals in One Piece, to a standstill.
- Storms Overhead has Louise and Henrietta get an upgrade; the former packs new Void element spells that can defy the laws of physics, including matter destruction (or at least, appears to be so) while the latter commands her nation with equivalents of modern day policies. Seeing that they're both mentored by a scientist/scholar, it was bound to happen.
- Thousand Shinji: In the original Evangelion show Shinji was a wimp, Rei was properly trained but she was weak, and Asuka was a good warrior but she got her butt kicked constantly. In this crossover with Warhammer 40,000, the three pilots gain huge powers and take several levels in badass: Shinji becomes a sorcerer with psychic powers, Asuka a berserker super-soldier and Rei a plaguemaster.
- Time Lords and Terror, a Friendship is Magic and Doctor Who crossover, re-imagines the events of the G1 movie as a Cosmic Horror Story. Instead of kid-friendly villains, Hydia, Draggle and Reeka are now The Fair Folk-inspired aliens. They now beat ponies bloody and harvest their life force to awaken the S'Muz (aka the Smooze) an Omnicidal Maniac, driven by hate, Eldritch Abomination that causes a wave of madness by its mere unsealing, that wants nothing more than destruction of all universes.
- The basic premise of To Hell and Back (Arrowverse) is that Barry, Oliver, Kara, and Kal-El all spent a decade on Lian Yu and then with the League of Assassins. Oliver, no slouch already, becomes even better than his canon self, Barry becomes an Empowered Badass Normal and even more of a Badass Bookworm, and Kara undergoes Boxing Lessons for Superman that, combined with her Combo Platter Powers, allow her to curb-stomp her way through Unskilled, but Strong Kryptonian mooks (though she does have trouble with the most powerful villains, such as Astra and Grodd).
- In Unfamiliar, almost every canon character from The Familiar of Zero (but especially Princess Henrietta) gets a massive competence boost and a power upgrade. Considering that they're expected to cope with One-Man Army Alex Mercer, this is perfectly understandable.
- In Justice Society of Japan while Mordred has a relationship to Morgaine Le Fey similar to how he was depicted in Justice League, in this continuity, the preteen is now less of a Royal Brat and more of a Loyal Implacable Man. Also, Shirley Fenette has been upgraded from a schoolgirl to one of the main heroes.
- Last Child of Krypton does this to plenty of characters, but first and foremost is Shinji Ikari, who turns out to be half-Kryptonian in the story. Later examples also include Asuka, Toji, Rei, Kaji, and Naoko Akagi.
- Superwomen of Eva 2: Lone Heir of Krypton: Asuka was the best Humongous Mecha pilot in the original story, but she was still a physically fit thirteen-years-old human. In this story she has Kryptonian DNA with all it entails: she is super-strong, faster than a speeding bullet, nearly invulnerable... and she can fight giant Eldritch Abomination with her bare fists.
- Many canon characters from YuYuGiDigiMoon have given power ups: such as the Digimon Tamers receiving beast powers base on the Four Chinese Symbols, and the Sailor Senshi receiving the mysterious Valkyrie forms.
- Justice League of Equestria: Deathstroke has always been a skilled fighter in The DCU, but here he manages to get the drop on Rainbow Dash (this universe's equivalent to Superman) in their first encounter, and then manages to almost defeat her again during their fight in Cloudsdale.
- Child of the Storm has a number of these:
- Sean Cassidy goes from C-List X-Man (B-List on a good day), famous for screaming loudly and (somehow) flying, to a deadly spy with decades of experience and, thanks to a Noodle Incident, the physique of a man in his prime. And as he demonstrates on HYDRA troops, his abilities go far beyond simple screaming and he most definitely knows how to use them.
- The Winter Soldier progresses from street level nightmare and Darth Vader Clone to the terror of the entire Western World, an immortal wraith-like figure and One-Man Army who induces pants crapping levels of terror from just about anyone who hears of the possibility that he might be around. And he backs up the hype too: he's one shotted a former Captain Britain, for instance. In one of his rare on-screen appearances, he's killed James Bond with minimal effort. And he killed Kennedy. Loki calls him possibly the most dangerous assassin in the Nine Realms, and it's kinda hard to argue with the guy.
- In chapter 60 he shows what he's really capable of by ambushing Steve, Natasha and Clint and having them dead to rights.
- Harry packs more magical power than in canon, growing into a fully fledged Guile Hero who actually plans ahead to an extent, while remaining a master of the Indy Ploy. He's also a lot more confident, to the point where he's more than willing to stand up to gods and monsters alike with absolutely no fear. Plus he's got Wanda's blessing at his back, which means that he's even more magnetic to potential hero types than before. And all of that aside, he's a Prince of Asgard whose powers are beginning to come through.
- Voldemort. Apparently, he went toe to toe with Magneto at one point when both were younger, as well as James Braddock at another. And on top of that, he steals some of Harry's Psychic Powers, which as the start of Ghosts of the Past shows has made him a thousand times more dangerous. And more dangerous even than that is the fact that this incarnation is a Combat Pragmatist with no inclination towards the kind of Bond Villain Stupidity he showed in the books.
- In the MCU, Thor is a Flying Brick with Shock and Awe powers (though he admittedly starts to grow beyond this in Ragnarok). In this version, he proves that he has roughly 1500 years of experience, meaning that he can do far more with his powers than just throw around lightning or whip up cyclones, and even without Mjolnir, can still go hand-to-hand with the Juggernaut.
- Though it's downplayed, Sirius Black, already no slouch with magic in his canon form, is a master duellist, having earned the Red Baron of "The Marauder." He doesn't like it much.
- Canon Wanda Maximoff suffered from constant Power Creep, Power Seep. How powerful is she here? Well, she's the former apprentice of Stephen Strange, and, in an Offscreen Moment of Awesome, pulled a Colony Drop on Nicodemus Archleone.
- On Coreline, this is the essential fate of anybody who enters the post-multiversal Reality Bleed World of Badass of the setting. They all have to become sharp, or risk dying (at worst). And as such, whenever any two characters of two differing fandoms clash (any two), it's up in the air who will win (if they are not cut down mid-fight by a Badass Bystander who's had enough).
- The Good, the Bad, and the Demon has April O'Neil and her best friend, Hitomi Tono. In the former's case, using more of her psychic abilities ever since she found she's half-human, half-Kraang, while the latter has learned to fight with April's help.
- Weiss Reacts:
- Cardin went from vaguely wimpy Jerk Jock to badass Gentle Giant who is considered The Dreaded.
- Blake now has the Gurren Lagann at her beck and call. She also uses Spiral Energy in addition to Aura.
- Jaune is a lot less wimpy and a lot more savvy, capable of holding his own in a fight. Also, Nora now utilizes Confusion Fu and, in some chapters, borrows her mother's railgun.
- Tukson, who was killed in the first two minutes of Volume Two, is a master Huntsman and martial artist capable of taking on Team RWBY by himself here. Not only that, but he doesn't need weapons; he's a Bare-Fisted Monk who uses Ki Attacks.
- Over in Lucina Reacts, Kellam is turned into The Ace, who matches the canonical Ace Cordelia for competence. This is a downplayed example in that Kellam was already a canonical badass, but much more understated and less focused on.
- In Homura Reacts, Hitomi is turned from a rather average Ojou to a Lady of War capable of taking on Sayaka and Kyoko on a two-versus-one fight and win with her bare fists.
- The Bridge:
- Kaizer Ghidorah became an expert at close combat in addition to his already overwhelming strength and energy attacks.
- Anguirus is considerably stronger than in canon, having more abilities he didn't in cannon. The most telling factor is during Final Wars he fought the Simian Mechagodzilla, and while taking a beating, ultimately managed to destroy it whereas in canon he was curbstomped by it.
- While extremely powerful in the unused projects that would have featured him, Bagan is a straight up Physical God here.
- G1 Grogar was a Hero Killer and one of the biggest threats in the series as it was, here? He's as strong as Bagan and Harmony and thus powerful enough to curbstomp Grand King Ghidorah if they were to fight.
- Persona EG: Flash Sentry, as the main character, is a Wild Card, is very good at playing Guitar, seems to be a Chick Magnet, and has gotten good at swinging a battle axe around. Not bad for a fairly minor character from the Equestria Girls movies.
- Paper Mario X gives Malon archery skills and magic music power. The bosses are also much tougher to make the fights more interesting due to how many more characters they're fighting at once.
- A RWBY Zanpakuto:
- Ichigo Kurosaki has four zanpakutos, the weapons of Team RWBY, and access to his Hollow, Quincy, and Fullbringer powers during the Soul Society arc.
- Uryuu Ishida is much more creative in applying his powers, and manages to kill Mayuri in a way that gains him his knowledge.
- Orihime Inoue is more willing to fight, and gains a limited teleportation.
- Chad actively trains with Yoruichi and becomes powerful enough to actually challenge Arrancars.
- Rukia becomes a Visored and gains her Bankai early.
- Tatsuki becomes a Fullbringer and becomes powerful enough to challenge Arrancars. She's also the one who defeats Tsukishima.
- A Hollow's Healing Factor can repair damage to internal organs, while in canon it could not.
- Ulquiorra has an Adaptive Ability.
- Aizen has a Sword Beam attack, actually uses his Bankai, and his final battle with Ichigo is much more impressive.
- While in canon, Foquet the Crumbling Dirt was skilled at making giant golems and not much else, in Star Wars Episode I: The Familiar of Zero she's a badass Square Class earth mage capable of matching a Sith in a sword fight. Her claim that fighting her "is to fight the earth itself" isn't an empty boast either as she can strengthen her body, create pits of quicksand, and conjure nigh indestructible adamantine golems. If Guiche's reaction is anything to go by, she's the earth mage equivalent of Karin the Heavy-Wind.
- Kirche is a dangerous melee combatant, using magic to conjure an axe and shield to fight with. She even manages to beat Louise who's not only wielding Derflinger but has been studying under a Sith lord.
- Metroid: Kamen Rider Generations Vol 2 - Ex-Aid Era feat Cross Ange takes it Up to Eleven as Samus becomes a Kamen Rider at her own right as Kamen Rider Huntress after Kuroto Dan gives her a Mighty Action X SP Gashat and Gamer Driver.
- Fairy Without Wings does this simply because of its setting to the entire case of Code Geass. In addition, Jenny is a legitimately powerful mage, Princess Hisui has shown she's not Princess Peach, and the Rune Knights are now capable of fighting some of Fairy Tail's best with some of their best.
- Venus Flash does this to Hikaru Sorano: in Codename: Sailor V she's merely Minako's Muggle best friend, but here it turns out she's actually an amnesiac Cutey Honey, and as soon as she remembers she becomes a force to be reckoned with.
- Six Paths of Rebellion makes a fair number of Code Geass characters anywhere from slightly to immensely more badass than canon. While Kallen gets a Geass, Rakshata, Sayoko, Euphemia, and Nunnally all gain the Rinnegan and become one of C.C.'s Six Paths of Rebellion. While Rakshata uses hers to become an extraordinary healer, Euphemia and Nunnally both train to become fighters with Nunnally taking up the mantle of Infinity to act as Zero's protector.
- Tomica Hero Rescue Pups: Where do we start? The PAW Patrol pups start by defeating several Axto when in their own show, the pups barely ever engage in combat. And this badassery only escalates from there, seeing that the author repeatedly has them reference Star Wars and Bayonetta. Notably, Chase has a stun baton now while Skye gets a blaster and later a lightsaber. Then the pups begin to unlock their own sets of Force powers. Also applies to the Axto, since they now have lightsabers, blasters, TIE Fighters, AT-ATs, and eventually Death Axto based on Death Troopers.
- Makino in Stallion of the Line, joins Luffy/Ranma on his journey and due to training with both Luffy and Garp, knows Armament Haki.
- From Dueling Trigger Finger: Rex Raptor gets to show just how competent of a duelist he is while dueling Makoto. Even though Makoto wins, it was not easy.
- Celeste was already competent to start with in canon, but here she's a freaking treat. Not only is she one of the more skilled duelists in the story, but she is putting that gambling talent of hers to work given her collusion with Marik.
- Black Widow in Vacation means Chaos is much more dangerous than her movie self. Not only has she taken the same Super Serum as Captain America, but she's also been an assassin since World War II, putting her more inline with her comic book self. Xander notes that even Buffy probably couldn't take her in a fight.
- In My Hero Academia, the protagonist, Izuku, is a Quirkless boy who is gifted One for All, which grants him incredible Super Strength that comes at the cost of wrecking the bones in whatever limb he used the power in. In Neither a Bird nor a Plane, it's Deku!, he's a Kryptonian Lightning Bruiser with Combo Platter Powers and Nigh-Invulnerability. Do the math.
- In the comics, the Ultra-Humanite is known for his vast intellect and superhumanly strong gorilla body, but mainly relied on his various gadgets to take on the Justice Society of America. In this story, he has a powerful Quirk called "Over Man", which reduces the physical capabilities of all humans within 100 m of him by 75%. With this, he's able to take on Izuku and All Might simultaneously!
- In the manga, Tokoyami's "Dark Shadow" is a fairly powerful Quirk. In this story on the other hand, it's a genie from the 5th Dimension named Tskymi, who can grant wishes to Tokoyomi without being limited by anything so quaint as the laws of physics.
- In one Elseworlds story titled "Be Humble", little Eri, a Broken Bird in the original My Hero Academia, is imbued with the powers of the Greek goddesses by the wizard Shazam, making her the super-powerful Flying Brick Shazam.
- In The Secret Keeper and its sequels, the reason why Bella Swan of Twilight was so passive and lacking in self-confidence in the novels is revealed; she's actually a muggle-born witch who has spent the last six years attending Hogwarts before Voldemort's return and the death of Dumbledore prompted her to return to the states, leaving her uncertain how to interact with non-magical people and significantly behind in what is expected of her coursework. Needless to say, once she's able to tell the Cullens about her magic, she swiftly impresses them with some fancy Transfiguration skills and a fully-formed lion patronus, among other tricks.
- Guardians, Wizards, and Kung-Fu Fighters:
- Daolon Wong is much more powerful than in canon, having access to magic created by the Demon Sorcerers.
- Jade ends up counting as this too, as her new Ben-Shui and Shapeshifter powers make her strong enough to fight Cedric or Wong on equal footing, making her more or less as strong or even stronger than an individual Guardian.
- This story's version of the Dark Hand takes the cake, however. What in canon was nothing but Valmont's personal organization, already fallen from grace by the start of the third season, here becomes a global criminal empire, spawning over five continents, each under the influence of one of the organization's five branches, with the likes of Bartholomew Chang and Vanessa Barone as their leaders. They are shown to be far more competent and resourceful than in canon, and after the Wham Episode that was Chapter 19, it's revealed that the Dark Hand is nothing but the tip of the iceberg of a kind of a Government Conspiracy, pulling a False Flag Operation with the likes of Section 13 so Earth gets aware of and weaponizes magic. One of their leaders is even Captain Black's direct superior. A far cry from what canon was, indeed.
- As is common for JCA fics that utilize them, the Samurai Khan are treated as Elite Mooks, rather than the Fake Ultimate Mooks they were in canon. They're physically stronger than other tribes, are slightly resistant to magic, and have enough self-awareness to adapt their combat strategies.
- Citadel of the Heart:
- William Dunbar was already a Rated M for Manly character in his own series, but here he ends up having most of his Lyoko powers in the real worldnote , including the borderline superhuman strength, both offensive and defensive and just flat out making him into an Implacable Man who flat out unnerves both friends and foe in the long-term because of the possibility of him going through a He Who Fights Monsters crisis. By the time the first arc has reached its halfway point, he's pointed out as having the single strongest avatar on Lyoko to the point the until this point Orcus on His Throne Garuda tries to actively kill William directly, which is the plot regarding just two days before the events of the prologue begin to occur.
- Ash Ketchum, full fucking stop. The moment he first awakens his Aura Vision abilities, he terrifies the Gym Leaders sans Iris because of the possibility of him being a repeat of his father who was a complete Invincible Hero whose power on the battlefield made him an ungodly terror despite his Nice Guy exterior. For the most part, Ash does indeed Turn Out Like His Father, but stays heroic overall whereas Sirius was implied to be at least somewhat Anti-Hero in nature by comparison. The author described Ash's journey up from the beginning to its inevitable conclusion as effectively as a situation similar to the Godzilla Unleashed Tyrant Ending, in which Ash goes completely Up to Eleven From Nobody to Nightmare. Even into the sequel two years later he sticks to his heroic traits, but he's suffering a lot of angst because he's fearing his own power at this rate because after two years if he keeps going at it the way he has, his own power will destroy him faster than anybody else could even make the attempt.
- Humungousaur is a Subverted case of this in this continuity. It's less so a case of Played Straight Adaptational Badass so much as instead a Forgot Flanders Could Do That; his Size Shifter ability from his debut series, which is seldom used in comparison to his Super Strength, is utilized far more often here to the point Humungousaur can turn battles that are otherwise Curb Stomp Cushion against him into a Curb-Stomp Battle in his favor with this ability. Due to the fact he uses this ability far more often, he actually can overpower Vilgax even if Vilgax is normally using his stimulated arm boosts, which is normally what puts Vilgax and Humungousaur on more or less equal footing until Humungousaur busts out the Size Shifter ability.
- In My Huntsman Academia, all of the My Hero Academia characters that have been transplanted into the story have all the benefits of possessing an Aura, including a constant forcefield, varying levels of Super Strength, and a Healing Factor. Izuku makes extensive use of the last one to use his finger-breaking Smashes more liberally without risking long-term harm to himself.
- Aizawa's Semblance also doesn't have the restriction of being unable to cancel out constantly active Semblances the way his canon counterpart does with Quirks. This comes in handy when he and Toshinori are facing down the Noumu at Mountain Glenn, as Aizawa is able to temporarily cancel out the Noumu's regeneration so Toshinori can soften him up.
- The titular character of Petunia Evans, Tomb Raider. A mere Muggle only known for being a shrew of an aunt in canon, here she is a fully-accredited Adventurer Archaeologist employed by Gringotts to work alongside their Curse-Breakers (here Squibs can see magic and are immune to Muggle-repelling charms). Her Establishing Character Moment is blowing up a Sand Drake with a rocket launcher, and she is integral in Voldemort's final defeat. Oh, and she's good at raising Harry as a single aunt.
- In Omni Evolution, Ben's powers have been amped. Not only can he transform with a mere thought, but he doesn't have any time limits like he does in canon. To add to this, he's only nine years old yet all this power lets him casually steamroll the X-Men without much trouble.
- Glowworm: Taylor gains the powers of Shazam from The Wizard, making her the physically strongest hero on Earth Bet.
- In Firebird, Taylor gains Jean Grey's powers, which eventually entails to her gaining the powers of the Phoenix Force. This leads to her easily defeating Simurgh and resurrecting the entire population that was killed in their ensuing battle with little more than words.
- Downplayed with Ryuji in Thieves Can Be Heroes!. In this story, he has a Super Speed Quirk. While Ryuji can run extremely quickly for short bursts, his Career-Ending Injury effectively cut the power and duration of it in half, forcing him to use it sparingly lest his knee give out on him.
- In Earth 27, Mystery Inc. Fred is a former Army Ranger, Velma has doctorates on several fields, Daphne honed her martial art skills, Shaggy is an (unpolished) amateur sorcerer and Scooby Doo is his familiar.
- Loud Ed Drama Heather is still the main antagonist of the story, but she is more socially savvy than she was in canon, where she let herself be openly hated at all times.
- In Digimon Adventure 02 MaloMyotismon is built up into a major threat only to be swiftly deafeated with in the most anti-climactic way possible by Talking the Monster to Death. Zero 2: A Revision on the other hand, builds him up into a major threat thanks to all of his schemes and planning. His power is so great that even the Time Master Xeedmilleniummon and the Guardian Beasts will fall before him. To defeat him, the Digidestined and their Digimons fused together and after a long and tough battle, in the end managed to defeat him.
- A fair amount of the cast in Digimon 02 The Story We Never Told falls under this umbrella. The older Digidestined take a much more active role in the post-Digimon Emperor arcs. Sora avoided her chickification. Ken built his own anti-Digimon weapons after the death of Wormmon. Kari mastered her powers over light. Dagomon is a threat equal to the Dark Masters. Sora and Matt's fathers (plus Izzy's parents) are revealed to have been the original Digidestined But the crown jewel goes to Yukio Oikawa. In canon, he was nothing more than a pawn of Myotismon. Here he's the Big Bad, a former Digidestined, and comes very close to destroying, or rather merging, both worlds. He not only invented most of Ken's technology, but also proved capable of reprogramming the code of the Digital World, he created the D3s, D-Terminals, AND Veemon, Hawkmon, and Armadillomon. And to cap things off, he manipulated everyone from the Digidestined all the way up to the Digimon Sovereigns and Dagomon himself. From Nobody to Nightmare barely scratches the surface of the difference.
- In Dragonball Divergence, Chi-Chi decides to keep training after having a conversation with Kami during her and Goku's wedding reception. As a result, she's a much more capable fighter than in canon, joining the Z Warriors and playing important roles in the defeats of several villains.
- Everyone in AU: A Saiyan Warrior ends up stronger as a result of Bardock leaving a message in Kakarot's pod before he's sent to Earth. By the time Raditz arrives on Earth, Kakarot is roughly ten times as strong as Goku was in canon. Special mention goes to Krillin as he, not Kakarot, receives training under King Kai and thus becomes one of the Z Fighter's heavy hitters.
The Familiar of Zero
- Canonically, Saito was just a regular guy until he was chosen as Louise's familiar. However, in Zero no Tsukaima: Saito the Onmyoji, he was already a fully-accredited mage, and being summoned to Halkegenia only made his powers greater.
- Fate/Harem Antics: Sakura is able to use spells and fire blasts of darkness at will, while in canon, she was never taught how to use Magecraft until after the Holy Grail War ended and could only fire darkness when extremely distressed.
- Path of the King: Here, before he died, Kiritsugu actually gave Shirou proper training in Magecraft (meaning he can use a lot more spells than just Structural Analysis, Reinforcement, and Projection) and warned him about the Holy Grail War. Shirou then took martial arts lessons from Souichirou Kazuki. As a result, this Shirou is much more competent and prepared.
Final Fantasy VII
- Kunsel is a normal Second Class with being a well informed and vaguely gossipy Mr. Exposition as his distinguishing trait and doesn't stand out in a company with the likes of Sephiroth and Zack Fair. In the The Fifth Act, he is shown to match Zack in skill when given the motivation and to be far more perceptive and knowledgeable than people realize. Kunsel is upgraded to being a powerful Knowledge Broker having a vast information network, being everyone's go to guy for information and in the Omakes, being better informed than the Turks.
- In one apparently non-AU fic, Tohru is a respected mob boss and cold-blooded killer, for some reason.
- Harry Potter and the Methods of Rationality:
- Severus Snape has been spiking Lord Voldemort's father's grave with every dangerous drug and poison known to wizardkind (and LSD—because it might affect him), as well as every other grave in the cemetery on account of Voldemort might have moved the gravestone, and the graves of every other ancestor of Voldemort's that he and Dumbledore could track down, just in case. Too bad Voldemort foresaw this contingency and, since he couldn't move his father's bones if he wants the resurrection spell to work, moved the entire rest of the cemetery to an entirely different location and memory-charmed the local Muggles.
- Harry Potter, in so many ways. Here's his following plan:
- Draco Malfoy went from The Bully to Manipulative Bastard, The Starscream to Harry, and scion of a long, proud line of Men Behind the Man.
- Quirrell in canon is a simpering stutterer who's a host to Voldemort. Word of God says this Quirrell is possessed by Voldemort, which now makes him an Evil Mentor to Harry, a sixth-dan in an unspecified martial art, and he horcruxed the pioneer probe! Oh, and then he went and tricked Harry into breaking Bellatrix Lestrange out of Azkaban.
- Blaise Zabini went from Draco's crony to a quintupple agent in a war with only three sides.
- Cruciamentum Eternus includes Lucius Malfoy during the time period of the last book. In the canon he was broken, pathetic, weak, and didn't fight Voldemort until it was safe to (and Narcissa pushed him). In this story, Draco's murder has him secretly murdering Death Eaters from almost the moment he's released from Azkaban, while still feigning allegiance to Voldemort's side, with the ultimate plan of killing Voldemort himself. If nothing else that requires at least an epic feat of Occlumency and a strength of will he never shows in the books.
Jackie Chan Adventures
Kamen Rider Fourze
- In Horseshoes and Hand Grenades, nearly every single character who ever appeared in Kamen Rider Fourze have gone into fighting mode. This ranges from Yuki Jojima using her Hayabusa Plushie as a boxing glove, Chuta Ohsugi fighting off his former love interest, Sarina Sonada and minor characters like the ones in the Amanogawa High Glee Club consist of a sword wielder, a samurai and a ninja.
- The Princesses of Heart in Stygian Solace. Snow White can hold her dying world together with sheer force of will despite being the only human survivor and all of them together can force Id and Maleficent through a Heart Beat-Down and their powerful light magic. Kairi unintentionally can create life as seen with Yami.
The Legend of Korra
- While Korra was undoubtedly badass in canon, she is even more so in The Saga of Avatar Korra, accomplishing or gaining abilities sooner than her canon counterpart due to being raised and put through a Training from Hell regiment by the Red Lotus for fourteen years, and delivering Curb Stomp Battles to characters who were more difficult for her to defeat in canon, such as Unalaq, Desna, Eska, and Kuvira.
The Legend of Zelda
- In the original game, Mila is just a background character at the beginning and a sidequest character at the end. In this novelisation of The Wind Waker, she gets off to a rocky start by insulting Tetra, a pirate, but near the end of the novel, she travels all the way to Diamond Steppe Island (which is really far away from Windfall Island in the original game. Even further in this since the novel expands the world dramatically) through unknown ways, climbs up the island and teams up with Link, quickly learns how to swing on a grappling hook before doing it perfectly without assistance and even saves Link's life when he has to jump across a gap and almost falls in. All of this just to escape poverty. She later turns up at Link's house with several others, now wearing normal clothes rather than rags.
- In The Legend of Zelda: Ocarina of Time, Gohma is simply a Breather Boss to introduce you to the boss mechanic in the game. In a novelisation of the game, she starts of as a shelled spider that gets corrupted by Ganondorf and becomes a variant similar to the one from Hyrule Warriors with bladed forearms, hooked legs, one massive, red eye that can shoot lasers and change colour, a mouth that can spit acid and very masculine grunts. She even gives Link a run for his money in both of his fights with her, badly injuring him in the first.
- Contract Labor: In direct contrast to the Extreme Doormat he was in canon, Keitaro actually has some backbone and is far more willing to stand up to and for the Hinata's residents, even managing to defeat Motoko in an honor duel.
- In The Merry Killers every girl at the Hinata Sou from Haruka to Shinobu is a skilled assassin. Even Kitsune, who specializes in organizing and managing their hits, manages to hold her own against Golgo. While Keitaro isn't an assassin or even really a fighter, he's still Nigh Invulnerable, even shrugging off Jumping on a Grenade and being annoyed at most upon being hit by a sniper round.
- Game Theory:
- The Jewel Seeds get a serious upgrade in their power and threat level. As the author explains:
Nanoha showed us that the Monsters of the Week could be a backdrop to the real meat of the plot, the character interaction, but then Madoka
came along and showed us that the Monsters can still be legitimately, vividly scary. And Game Theory is very much a post-Madoka story, with the harsher rules and the scarier monsters and so on.
- Pretty much all the characters over the age of about sixteen or so get a significant competence boost. They aren't any more powerfulnote , but they use what they have much more effectively because they employ proper tactics, especially Precia (since the entire premise of the story is that she's only slightly insane instead of full-blown bonkers). The Wolkenritter in particular have received a major upgrade in skill, showing the experience and tactical acumen that would be expected of centuries old combat constructs.
- Yukino in Perfection is Overrated. In the original series, her Child was only good for surveillance, and left her easily defeated by Shizuru. In this fic, she realizes that while she's not the best in a straight-up fight, she can use her powers to tip the balance of power in her favor at crucial moments, such as when she incapacitates Shiho, enabling Mai to win her battle without Yuuichi dying, and when she, in the final battle, uses her Child's abilities to immobilize one of the last remaining SUEs' Child long enough for Natsuki to finish her off.
Marvel Cinematic Universe
- This trope is a staple for the villains of Ultimate Sleepwalker: The New Dreams and Ultimate Spider Woman: Change With The Light. Characters like 8-Ball, the Brothers Grimm, the Chain Gang and Jack O'Lantern were all C-lister villains, at best, in the original comics. In the Earth-2706 verse, though, they're exceptionally deadly threats, forming the focus of the Fics.
Mermaid Melody Pichi Pichi Pitch
- Mermaid Melody Pichi Pichi Duo: Over the course of the fic, Kaito, Nagisa, and Masahiro get their own personal idol forms, allowing them to fight alongside the Mermaid Princesses.
- Rise of Paonne and Renard Rouge: Because Gabriel is an experienced Retired Badass hero in this continuity, the Collector is a much bigger threat. Ontop of having fighting experience, his legitimate corruption (as opposed to simply acting like a victim of akumatization like in-canon) means that he does not hold back, making him a super-effective fighter against all four heroes. Hawk Moth even remarks that he might be one of the best villains he has created given his effectiveness. It takes the combined efforts of Paonne, Chat Noir and what was left of the original Quantic Team to take him down.
My Little Pony
- Codex Equus:
- Queen Mzazi is the Mother of All Zebra, and an incredibly powerful 4 million-year-old goddess who once shredded an armada with a lightning storm. She's also G1 Zigzag, one of the Pony Friends from G1.
- Queen Dazzleglow of the Glimmering Isles was originally a G1 unicorn mare that was part of the "Glow 'n Show" pony toyline. Here, she's a Sparkle Pony, a type of mutated pony that could manipulate light and stardust, and is an Alicorn (though she did appear as an Alicorn in the My Little Pony Tales series).
- Rainbow Dash in canon is the fastest pegasus alive, an Element of Harmony, and is the only one capable of pulling off a Sonic Rainboom. Here, she's a Rainbow Pony, a type of mutated pony that could manipulate light, energy, and rainbows, though she remains unaware of her full potential. Luminiferous, the Alicorn god of Perfection and Potential, is interested in unlocking her development so she could perform the Rainbow Ponies' fabled "Rainbow Warp".
- In canon, Thorax physically transforms into a Changeling King after defeating Chrysalis with The Power of Love, but is still rather meek, Adorkable, and struggling with being a leader. Here, Thorax's confrontation with Chrysalis resulted in him becoming a newborn Royal Changeling, the Changeling equivalent of a demigod, and the 'Progenitor' of his own hive, which contains transformed Changelings who were purified of their Curse. He has so much potential that he accidentally blasted Changeling King Zorpheus across Avalon with a magic beam that would have killed anyone else. When Luminiferous briefly unlocked his potential to fight Apertus, Thorax emerged from his cocoon as a Changeling Emperor.
- Ahuizotl is presented as a much larger threat, to the point he managed to clash with King Brachion in wits and power.
- Prince Blueblood, the boorish Jerkass who mistreats Rarity in canon, is a Warrior Prince who is a skilled water mage and an esteemed Commander of the Royal Equestrian Navy, whose soldiers regard him as a hero for leaving no one behind. In addition, his compass rose Cutie Mark means that he has a special talent in clairvoyance, which helps him find things that people need and redirect government power and authority to places that need it most. He's no slouch in physical combat either, as his military training allowed him to defeat numerous assassins sent by rivals and enemies in their attempts to get rid of him.
- Duelists of the Autumn Crown has Flash Sentry. While we don't know how skilled he was in the movie, there he's the best duelist in the school second only to Sunset Shimmer, and with her there are light implications that she's cheating somehow.
- Pony POV Series:
- Mimic is said by Princess Luna to have been the first, and only, mortal pony to injure Discord, by kicking him in the face at supersonic speeds until she knocked his tooth out. He killed her afterwards, but still. Starsong probably also counts, managing to fend off Discord's brother Anarchy for a considerable time.
- While Princess Cadence turned out to be pretty badass in canon, the version of her in this series was able to take on an avatar of Discord's father Havoc and not only survive, but it's implied that she won.
- There's also the CMC, who manage to be Badass Adorable in this universe, Minuette and Twinkle Shine, who really get to show off their Gifted Unicorn credentials, Shining Armor, who saved the world from an Imagination Demon, and Trixie who becomes the Sixth Ranger and grows to be able to fight Twilight on fairly even standing (though played with in that regard: she at first avoids and fights her Element of Magic because she hates the idea of being 'back up Twilight' until she eventually realizes she represents magic in a completely different way). Honestly it's easier to count the characters that don't count.
- Rainbooms and Royalty has Zecora, while still being the mentor to the Mane Six like in canon, also proved personally fantastic repeatedly over the course of the series, with such highlights as saving Rainbow Dash from the Shadowbolts, fighting Nightmare Moon one-on-one, and saving Dinky, Pipsqueak, and Alula from King Sombra's bushwoolie Mooks.
- Xenophilia turns Lyra Heartstrings into a grandmaster of the Still Way, the only Unicorn-exclusive martial art. She's described by Rainbow Dash as "probably one of the five or six most dangerous ponies in Equestria, even counting the Princesses," and the only pony in town other than Twilight who could beat her in a serious fight. Chapter 9 reveals her to be an auxiliary Royal Guard, and we also see her in action.
Lero: Wow. I had no idea. She's always been really friendly to me.
Rainbow Dash: [giggling] Yeah, Ive heard that about her. Total sweetheart, youd never guess that she could kill you in half a second from, like, three hundred bodylengths away.
- Rarity is slowly heading in this direction within the Triptych Continuum, and it comes from recognizing her own limitations. She has strictly average field strength, knows no spells for direct offense or defense, her physical abilities are nothing special — and she's been placed in a position where she regularly has to risk her life in direct combat. So how is she dealing with this? Through becoming the single dirtiest fighter anypony's ever seen. Take a telekinetic with exceptionally fine directional control who regularly carries sewing needles with her, then pray she doesn't have a straight shot at your eyes. And in physical combat, she'll go for joints, sensory organs, vulnerable spots, and everything else offered without caring about dignity or the pain of the other party, because all that pales in significance to her goal of coming out alive. Compared to the others, she may not bring much to bear — but what she does have is targeted with terrifying efficiency.
- Cadence in canon, while admittedly having some badass moments, is still mainly a supporting character. On the other hand, Cadence from the Blooming Moon Chronicles has wanted to be a soldier ever since she was young, rather than sit back and be a princess. Over the course of the series, she eventually grows more proficient at fighting, being able to utilize both weapons and magic to her advantage. She becomes part of the Orphans, an elite fighting force that keeps the worlds safe from threats. At one point, she takes on Loki himself, and is capable of going head-to-head with some of his strongest forces.
- In the Harmony and Valor series, Flash Sentry and Sweetie Drops are martial art masters who are strong enough to toss thugs around like ragdolls.
- In Vapors because she was found by the Third Hokage and adopted into the Uzumaki Clan as well as studying under Anko, Karin here is capable of holding her own with Sasuke in combat and is often paired with him on missions.
- In canon Konan got caught by Jiraiya, acted as support during Pains attack on Konoha, and got killed by Tobi. Here she demonstrates exactly why shes The Dragon.
- In canon, Kaguya is a joke, an Anti-Climax Boss that was defeated by Narutos Reverse Harem Jutsu. In Reverse, however, Kaguya is the Hero Killer and caused the extinction of the human race and Kuramas plan boils down to preventing her from awakening.
- Son of the Sannin does this to Naruto and his peers, and with a justified reason in-story: as a result of the Uchiha clan's uprising, Konoha suffers a major blow to its military manpower, and thus they're forced to up the standards in the ninja academy to ensure that the graduates are better prepared to handle future threats. This includes teaching them chakra control, elemental and medical ninjutsu.
- In Black Flames Dance in the Winde: Rise of Naruto, not only is Naruto S-Rank at graduation, but Anko, Zabuza, and a few others are all S-Ranked as well.
Neon Genesis Evangelion
- It's somewhat of a Fandom-Specific Plot to make Shinji (and often other characters along with him) more badass, or at least less traumatized, due to the severe What Measure Is a Non-Badass? he has going on.
- Evangelion 303: Several characters are more badass than their canon counterparts:
- Shinji is an adult, seasoned soldier in contrast to his untrained teen pilot canon self.
- Touji, Hikari and Kensuke are jet fighter pilots rather than average teenagers.
- Neon Genesis Evangelion: Genocide allows Asuka to fully show off the prowess that the original series hinted at and The End of Evangelion gave but a short taste of. When one of the new "Angels" has send Rei down for the count and is about to give Shinji Coup de Grâce, she gets a full-on She's Back moment, and proves what she is capable of by ripping the Angel apart. She goes on to remain a competent pilot throughout the story.
- In Nobody Dies Kei Ayanami was originally just another one of The Ree with Bond Villain Stupidity as her Quirk. And then The Kei-Files came out, and she was changed into a Manipulative Woobiefied badass girl with Adorkable and Fragile traits, making her one of the most beloved original characters of the fic.
Once Upon a Time
- Mr and Mrs Gold: While she is still Rumpelstiltskin's Morality Pet and is a force for good, here Belle gains magical abilities [from the ritual used to bind her on their wedding day. She earns her own infamous status as "the Caretaker", some rumors speculating that she is even worse than Rumpel, and is one of the few characters aside from Rumpel capable of intimidating Regina.
- In Logia Luffy: Rise of the Dark Emperor, Kuro is given a Zoan Devil Fruit, mostly to keep his fight with Luffy from being too one sided.
- In This Bites!, Hattori is actually a dangerous assassin capable of using the Six Powers.
- Several of the Straw Hats become stronger sooner due to Cross giving them hints regarding their future abilities. Special note goes to Chopper who develops a Jekyll & Hyde personality and creates his own explosives, earning himself a 66 million bounty, and Nami who gained Ohm's Eisen Dial and fried ten battleships at Enies Lobby, making her a Supernova with a bounty of 125 million.
- Miss Valentine in Truly Precious has some level of ability with Armaments Haki, making her considerably more dangerous than canon.
- Zig-zagged in The Bald and the Esper as Tatsumaki starts off weaker than canon but with far more varied skills (using her telekinesis to create bombs, laser blades, and more) then starts training under Saitama. By the Sea Folk Arc, she's learned how to turn someone's energy against them. While against Saitama, it only nudges his fingers, against a monster, it spins them with so much force they rip apart.
- The Sea King is also more dangerous to counter Tatsumaki's different skill set from Genos. Here, he can split into three equally powerful bodies to overwhelm enemies or act as distractions.
- While we never actually see him in combat, Metal Knight is now S-Class Rank 2. He has an entire army of robots at his command and he is the sole protector of an entire city. Additionally, Dr Bofoi himself is a powerful cyborg, the only clue Word of God reveal of his true power? "Nanomachines, son."
- In canon, Kousaka Kyousuke is the type of person who lets his sister walk all over him. Contrast this to My Life Can't Lose Its Normality where he (as well as Ayase, Akagi, and Miura) are a team of martial-arts mastering, Yakuza-killing vigilantes who pull off stunts normally reserved for paramilitary organizations and special operatives.
- In canon, Ash Ketchum is a rather bumbling, childish, and well...stupid, trainer. In The Chosen One's Journey, all that is replaced with maturity, responsibility, discipline, and pure badass.
- Due to the result of a Peggy Sue plot, Ashes of the Past has pretty much everyone that Ash has come into contact with become a bona-fide badass. This ranges from Ash actively pursuing his Aura Guardian training and fighting Pokémon with his bare-hands, to Charizard learning the Poké-equivalent of a tactical nuke, to Squirtle (as a now-Kamina expy) breaking the laws of physics on a regular basis.
- Pokémon Reset Bloodlines has this a lot. Bar the characters who have the titular bloodlines and the badass gains from such abilities, a wide variety of characters are much more impressive than their canon selves: The Team Rocket Trio can actually steal Pokemon, Georgia is a militarily trained Dragon Buster whose job it is to arrest corrupt gym leaders and elite four members, Ash's Pokemon evolve earlier and have new, more powerful moves they lacked in canon like Aerial Ace, Brine, and Zap Cannon, and Mabel from the XY anime went from granny to Lumiose Conference winning granny. Badassery isn't even just in physical power: Erika is shown to have sizeable monetary and political power she has never been shown to have in other canons.
- Common Sense is based on a simple premise: what if the TR Trio was actually competent? The answer: this trope. For bonus points, in response to this additional pressure, the "twerps" and their Pokémon are also more formidable than in canon.
- Both Shudo cross Modern Ash: The Trainer who Questions Humanity and Shudo cross Modern Ash: The Professor Who Observes his Charges have an Ash with more evolved Pokemon and farther placement in the leagues he entered.
- In Pokémon Black 2 and White 2, Yancy was merely a side character who only traded with Nate, the male Player Character, during her respective sidequest. In As Fate Would Have It, she has a full, balanced, team of Fairy-types, defeated all 8 Unova League gyms offscreen, and proves her strength when she effortlessly defeats Hugh, a pretty strong trainer in the original games, in a Pokemon battle.
- In canon, Misty's sisters gave away gym badges due to being lousy trainers and more focused on their water shows. In Legend, they give away badges because they're so strong that they've gotten in trouble with the league for "discouraging trainers".
- In canon, Ash was an Idiot Hero known to slack off his training and earning half his badges without beating the gym leaders at the beginning of his journey. In Traveler, is reasonably intelligent, spends most of his waking hours training his team, and wins every badge legitimately. After getting his eighth badge, Ash tours Kanto again and beats each gym leader's real team. Finally, Ash takes second place at the Indigo Conference and gets taken on as an Elite Four trainee.
- The Legendaries. Rather than Olympus Mons that are powerful but can be beaten and even captured by the right strategy, or even just a strong enough opponent, in Traveler, the Legendaries are physical gods whose mere presence empowers nearby Pokémon and create storms that threaten entire nations.
- Bruno is able to use aura to some degree as a fofm of Charles Atlas Superpower.
- Ace Trainers in the games are merely NPC trainers that are somewhat stronger than most. Here, they're ACE trainers and are essentially the Pokémon Trainer equivalent of special forces like Navy Seals, SAS, and KGB.
- All Elite Four and League Champions (including former ones like Steven) have access to Mega Evolution.
- RWBY: Reckoning takes the normally bumbling Jaune Arc, a guy who is nothing like his legendary ancestors, and makes him able to build a functioning time bomb with approximately 18 flares, some duct tape, and some scraps. And it's powerful enough to shred the stomach of a very large Grimm.
- The Commission takes the formidable, but still in training, girls of Team RWBY and makes them The Dreaded. They're the leaders of each of their groups, all acquired via hostile takeovers, and are engaged in their own conspiracy with ruthlessness and efficiency that scares the original show's vilains. Heck, those villains appear in this fic as the girls' subordinates.
- Several characters in In the Kingdom's Service get badass upgrades. Cardin, Ciel, Velvet, and Yang are all secret agents while Oobleck is the director of Vale Secret Service. But the biggest change is Penny, who is a weaponized Relic made to kill Maidens.
- The White Fang get this treatment in Black Out The Sky. In the original series they pose a valid threat, but still end up getting foiled by main characters more often than not. In the fic they manage to effectively Take Over the World and utterly outgun any resistance they still have to face. Adam Taurus in particular goes from being merely a skilled combatant to a One-Man Army capable of wiping out a huntsmen team in a matter of seconds.
- Sailor Moon: Legends of Lightstorm:
- Sailor Moon now fights primarily with sonic screams powerful enough to annihilate buildings, her energy disk can slice through almost anything, and her physical strength is great enough to punch through rocket-proof armor.
- Sailor Mercury impales things on gigantic ice spears and can stand up to the toughest of Negaverse drones single-handedly.
- Tuxedo Mask has fighting skills that rival Lightstorm's can cut through virtually any substance with his razor-roses, hits hard enough to knock gigantic drones off their feet, and can withstand explosions strong enough to shred drone armor.
Sonic the Hedgehog
- Sonic X: Dark Chaos:
- Tails goes from being a weak, shy Gadgeteer Genius into a Magnificent Bastard captain who gains a Lovecraftian Superpower and ends up saving the entire universe from an Eldritch Abomination at the cost of his own life.
- Cream stays with Sonic and friends to the end, even after seeing things that would make most adults break down. In Episode 66, she and her chao Cheese ends up beating Astorath the Prince of Darkness on her own.
- Cosmo saves several planets before becoming acting captain of the Blue Typhoon, and she is also appointed leader of the Metarex during the final battle. And in the rewrite, when Astorath and Beelzebub land on her ship, she runs out onto the flight deck with Venus' demon scythe and rips them a new one.
- Chris Thorndyke goes from being a whiny, dependent brat to a Genius Bruiser, pulls off a Big Damn Heroes and unleashes Death from Above with the Typhoon in the rewrite of Episode 69, and later on fights Beelzebub and Astorath alongside Cosmo during the final battle.
- Soul Eater: Troubled Souls: An increasing number of canon characters show more skill or competency than their original counterparts, which is saying something. They are even gifted more techniques and moves than normal, especially those who lacked them. Here are some specific examples:
- This fic plays up Tsubakis abilities as a ninja or assassin. She also seems to be a bit more resourceful.
- In canon, Ox has a pretty limited repertoire of techniques and moves. Here, he has plenty to spare, up to and including a Soul Resonance between him and Harvar.
- Crona receives stronger forms, learns Soul Resonance, can fight Medusa on equal or better footing, overcomes Mad Blood, and is saner. Oh, also, "badass" as in kills Medusa permanently!
- Kim fends off Medusa Gorgon long enough until The Cavalry comes without her Regeneration Magic.
- The Mizunes, specifically their fully combined form. In the original manga, that form of Mizuna is only seen in a fanservice cat fight with Blair. Here, this is the sisters' most powerful form, and they absolutely destroy Caius and Tsuji in the Cobra Island arc.
Super Mario Bros.
Sword Art Online
- In The Kirita Chronicles Kirita, the Gender Flipped version of Kirito, is more capable of being able to defend herself in the real world than he could. After quitting Kendo, she took up karate classes and is capable of delivering curb stomp battles to bullies and her fellow karate students. In canon, it is assumed Kirito focused solely on computers and video games. After being trapped in the video game, Kirita trains even harder to become stronger because she believes players will consider her vulnerable if they find out she is a female player.
- New Tamaran:
- Scarecrow can normally be easily taken out by Batman, but here he goes toe-to-toe with an Amazon princess and an overpowered half-demon. Of course, he does fight both with magically enhanced fear toxin.
- Zig-zagged with Steve Trevor. While hes never been a weakling, he tends to be overshadowed by characters with god-like strength. Here, he leads an assault on an invading Tamaranean army, and even after he loses his plane, he still manages to take out several alien attackers before going face-to-face with Wildfire and punching him into the Washington Monument.
Tengen Toppa Gurren Lagann
- Rumia is lowest of the low in Gensokyo's hierarchy, weak and with a useless power. It's widely speculated however that she possesses a Superpowered Evil Side, meaning most fan works featuring her give her an appropriate power boost, though the degree of the boost varies vastly; Imperfect Metamorphosis for example makes her into a Walking Wasteland and a Fallen Angel, whereas in Touhou Nekokayou she's slightly more powerful but still comic relief.
- Cirno, another canonically weak boss who is a fan favorite due to Awesome Ego, also gets this treatment quite often whenever she's not the Memetic Loser instead. Does this look like a stage 2 boss to you?◊
- Imperfect Metamorphosis:
- Kotohime was a generally ineffectual and totally delusional combatant in her original appearance. In this Fic, she's graduated to the rank of Beleaguered Assistant to Yukari herself, running Gensokyo's first police force, and at one point she delivers a beatdown to Marisa Kirisame for disintegrating one of her officers (she got better).
- Yuuka Kazami in canon is certainly powerful and has aspects of The Dreaded, but there are plenty of characters who could take her in a fight. Yuuka in IM is the most feared being in Gensokyo's history, a nightmare who no-one dares confront directly, and who shrugs off all the attacks leveled at her by Yukari and her team she assembled specifically to kill Yuuka, in the process revealing her nature as an Outer God.
- Mokou is already an immortal powerhouse and EX-Boss. Touhou Ibunshu in addition has her possess the powers of a Physical God, giving her the strength to go toe-to-toe with Yukari after creating an army of thousands of kashoyo.
- Maiden's Illusionary Funeral takes Yukari and Ran, already ancient sages with near-unsurpassed abilities, and makes them both The Juggernaut who cleave through groups of specialist youkai hunters without a scratch. This in turn makes Yuyuko one as well, given she nearly killed Yukari while still trying to restrain her powers.
- In Transformers Animated, Optimus was an Elite Guard washout and was brought online after the events of the Great War, initially not posing much of a threat to the Decepticons. In TFA Kaleidoscope, he's a front-line soldier who fought in the Great War, having killed numerous Decepticons during his time and matches Starscream in their battle.
- In the fanfic Recursion, the normal Final Boss of the Genocide run, Sans, is actually one of the first bosses Frisk has to fight. The character that takes his place as the last and most difficult challenge before Asgore? It's Napstablook, who, after hearing about both of their cousins Mettaton and Furlablook dying, decides to fight... and gives Frisk a battle that puts Sans to shame.
- For starters, Napstablook's opening move is to transport Frisk into the space that you see during your time in his house... a massive intergalactic space not connected to Earth, where they decide to leave Frisk at first to die of starvation and/or thirst. When Frisk gets them to start fighting, however, Napstablook brings out a massive mix of mechanics from his fight, Sans's, and Mettaton's to give Frisk and Chara a very bad time...
- When the fight begins, Napstablook uses his own version of the Gaster Blasters: magical speakers that blast out sound waves.
- When Frisk manages to survive that, there are mini-Napstablooks akin to the mini-Mettaton's found in the battle with Mettaton EX (which, due to Frisk lacking a yellow soul, can't be targeted and destroyed) that fire musical notes and attack in tandem.
- Napstablook also has the "not really feeling up to it right now" words from his Pacifist fight. Which they use to sucker-punch Frisk when he tries to catch his breath by rushing him with acid tears.
- To top this, there's a "copy" mechanic that saves the positions of Napstablook's attack's at a certain time... which he combines afterwards with a paste mechanic. As in, pasting the attacks he had when he copied onto the field in addition to the attacks already taking place.
- After a while, Napstablook unveils a unique soul-affecting mechanic; a "soul tether", that makes Frisk to stay within a certain area or be yanked back into it forcibly, which they can also use to drag Frisk into the paths of their attacks. Later on, it turns out that they can tie Frisk to two different soul tethers, restricting his field of movement even further.
- And the two scariest parts about all this? First, Napstablook is a ghost, and can't be hurt without magic, which Frisk doesn't have, meaning Frisk has to find a way to demotivate Napstablook enough to get them to leave. And second, Napstablook admits during the battle that they're out of practice. And then it turns out the fight has a Time Limit; when they decide that they've warmed up enough, Napstablook makes four soul tethers, forcibly anchors Frisk down with them, and blasts him with speakers until he dies.
- Inverted Fate has this with several NPC's, such as Bratty and Catty, in that they have joined the Royal Guard, and actually have battles.
- The Snowdin Canine Unit are much tougher than in Undertale proper, giving Frisk a harder time.
- Alphys is captain of the Royal Guard, and while she uses a crossbow and focuses on strategy over strength, she still the captain of the Royal Guard, and is much stronger than canon Alphys.
The Walking Dead
- Old Scars takes Sarah, one of the biggest liabilities in the game, and makes her more independent and self-aware, which allows her Take A Level In Badass and become more capable and emotionally stable than her video game counterpart.
- In Worldwar: War of Equals, all of South America, Central America, and Eastern Europe put up much more of a fight than they did in the source material. Human tanks qualify as well. In the original novels, even the best Human tanks of the 1940s could easily be destroyed by a single Landcruiser. Thanks to tank technology advancing in the last couple of decades, our tanks are either equal to or superior to their Landcruisers.
- Quicken: In the original story, Emma was a powerless, cowardly girl. Here shes a regenerator super-human capable of detecting other super-humans and stealing their powers and memories after killing them, and prone to go berserker.
- In Young Justice Titans, the Scarecrow gets a serious badass bump. Thanks to becoming a member of the Church of Blood, he's given supernatural powers, and is hinted at being essentially a real living scarecrow now, with impossible flexibility, his Sythe that he pulls out of his mouth, and fear gas in both Gas and solid forms. He's even able to fight a team with powers far beyond him (including a Green Lantern). He's also almost unkillable too.
- Following in Young Justice tradition, Onomatopoeia in With This Ring. In the comics, a guy with a gimmick. Here? A powerful magic user that uses onomatopoeia as the incantations for his spells.
- And also Dark Druid. In comics, he was a villain from the U.K. and thus barely even mentioned. Here, there are hints at him being a herald of the Black Lantern Corps.
- All cards used in Arc-Ved Protagonists use their real world effects be prioritized over their anime version's effects. As such this trope can apply for some cards while other's get the opposite depending on what the effects of the two versions are. Such as Yuto's Phantom Knights, which in the card game, have effects that can be activated in the graveyard by banishing them that they didn't have in the anime. As such Yuto's deck is capable of more combo's and has better consistency here.