[[quoteright:243:[[Manga/TheLawOfUeki http://static.tvtropes.org/pmwiki/pub/images/4c7ef76d0a7e2f7d06335e9c8ccbbc28.png]]]]
[[caption-width-right:243:[-Detention? You'd be getting off ''easy''.-] ]]

->'''Abraham:''' Feigned frailty, no "En garde"... Have you no honor?\\
'''Raven:''' The lives of my students are more important. Besides which, I ''did'' warn you.
-->-- ''Webcomic/ElGoonishShive''

Sometimes you have a teacher who is not a [[SadistTeacher sadist]], particularly [[SternTeacher strict]], or overly [[MisplacedKindergartenTeacher nice]]. They are just a regular teacher. Until you threaten their students. After that you might want to start praying to whatever god is out there for mercy. You ''do not'' mess with their students. Getting away with just a lecture is not an option. Detention, even less. And don't even think about getting off with a warning. These are the teachers that make you wish they'd leave discipline up to the principal.

A SadistTeacher wants their students to suffer. A BadassTeacher wants those who make their students suffer to suffer. It is not uncommon for the same person to be both ("You can't do that to my student; only ''I'' can do that to my student!"), but if the Badass Teacher and the Sadist Teacher are different people, expect the two to have at least one confrontation over the treatment of their students.

Usually they're the NonActionGuy (or Girl) type, or a {{Nerd}}. Often they're well-respected and popular with their students (though this isn't always the case). This is also common with [[EvilTeacher Evil Teachers]] who actually [[BecomingTheMask like their day job]]. [[OldMaster Anyone who runs a martial arts school]] is almost certainly also this trope, since their entire day job is teaching students how to fight anyway.

If a HippieTeacher or a MisplacedKindergartenTeacher is prone to this, [[BewareTheNiceOnes running away as fast as possible is probably a good idea.]] If the school in question is run by a church, it might overlap with BadassPreacher.

Usually not TruthInTelevision, as any real teacher who behaved this way would in most cases lose their job and become a FiredTeacher.

For the parenting equivalents, see MamaBear and PapaWolf. For an older sibling who acts like this, see KnightTemplarBigBrother. Can overlap with BewareTheNiceOnes, and occasionally BadassNormal in worlds with Supers. For a similar character, see BadassBureaucrat. Contrast SadistTeacher.



[[folder:Anime & Manga]]
* ''Manga/AssassinationClassroom'' features Koro-sensei, a nonhuman teacher badass enough to destroy most of the moon, turning it into a permanent crescent, capable of moving at Mach 20, temporarily cloning himself to teach his students individually at once, and immune to all weaponry besides a specific form of AppliedPhlebotinum. And his almost as badass class. Who are tasked with killing him. Because if they don't by March, he will destroy the Earth. If they do, whoever is responsible will get 10-billion yen, which equates to about 126-million US Dollars. The thing is, Koro-sensei is the best teacher these students have ever had...
** Later on, Tadaomi, their overseer sent by the world government, also joins in as their phys-ed teacher in order to sharpen their combat skills. They also get the help of Irina Jelavic, a professional hit woman and FemmeFatale to act as their foreign language instructor.
** At the end of the series, [[spoiler:Nagisa becomes one for a class full of delinquents]].
* Kagami of ''Manga/DenpaKyoshi'' is perfectly willing to risk his own life and freedom to protect his students' lives and freedom. Despite not being that willing to be a teacher in the first place.
* Colbert-sensei from ''LightNovel/TheFamiliarOfZero'' is a TechnicalPacifist and vehemently opposes war, but when the students are in danger he kicks major amounts of ass.
* From ''Manga/FullmetalAlchemist'', Izumi "I'm a Housewife" Curtis. Endanger her students/child figures and you're in big trouble. ''Big'' trouble.
** ''Be'' one of her students and you're in even ''[[SinkOrSwimMentor bigger]]'' trouble.
* Kumiko Yamaguchi from ''Manga/{{Gokusen}}'' is the homeroom teacher for a delinquent-filled school. However, she's also the 4th Generation female heir of a notorious {{yakuza}} gang. Indeed, she does a lot to protect (and also correct) her students...
* Onizuka from ''Manga/GreatTeacherOnizuka'' is the epitome of this. The guy took multiple gun shots to save a girl that's been slandering him and threatening his job, dived off a building multiple times to save students, biked through a building with an impending explosion, ''forced'' a student to give up her death wish, and destroyed multiple gangs.
** The same author wrote a manga called ''Kamen Teacher'', which is implied to take place in the same universe as ''GTO'', and focuses on a teacher who dons a ''Series/KamenRider''-style mask in order to whip his class of delinquents into shape.
* Meisuke Nueno, better known as ''Manga/HellTeacherNube''. Harm his students, and it doesn't matter if you're a powerful ghost or demon. He ''will'' kill you.
** Ritsuko also qualifies: despite being absolutely devoid of spiritual power, [[spoiler:her CrowningMomentOfAwesome had her, usually portrayed as being scared to the death of even casual mention of the occult, doing what she could to protect a student endangered by an evil ghost until Nube came to rescue them both]].
** And of course, there's SexyMentor Minako-sensei, who actually ''died'' to save little Nube's life.
* Aoki Daisuke from ''Kodomo no Jikan'' can be pretty badass when it comes to protecting Rin.
* Early on in ''Manga/TheLawOfUeki'', Kobayashi (pictured) demonstrates that [[ActualPacifist he may be against violence]], but if you threaten or harass his students, you will wake up in a lot of pain. Also, despite his love of justice, he is very mischievous...
* ''Anime/LittleWitchAcademia'', being set for the most part in a school that teaches magic, comes naturally staffed with at least reasonably competent witch professors, but Professor Ursula definitely takes the cake for measure of "most badass". She usually plays the part of a [[ShrinkingViolet meek, soft-spoken educator]], but will also effortlessly brawl giant monsters with her bare fists in defense of her students [[spoiler: and childhood friend turned BigBad]].
* Negi Springfield from ''Manga/MahouSenseiNegima'' becomes dramatically more dangerous if his students are in danger. The same goes for Takahata. If there's a queen then Negi could be considered the king; after being impaled with a stone spear he collapses in a pool of his own blood. Then person that injured him turned his attention to Negi's student... and ''that's'' when he gets mad: he tears the spear out of his body and ''uses it to bash the guy in the head''. Also keep in mind that he's only 10 years old.
* Koumoto Akari, of ''Manga/MyMonsterSecret'', is the great-great-granddaughter of the school's Principal, the thousand-year-old demon Akane. Said demon is a recidivist troll to the students and occasionally goes on potentially world-threatening tantrums [[SweetTooth when she doesn't get her fix of sugar.]] Akari possesses SuperStrength and is pretty much the only thing in the world that can put her Akane her place; and the latter is very careful to not piss her off ''too'' much.
* The eponymous school of ''Manga/MyHeroAcademia'' is staffed primarily by professional superheroes, so naturally this trope applies to pretty much all of them.
* Basically every sensei on ''Manga/{{Naruto}}''. Especially Naruto's own sensei, Kakashi.
** Might Guy is perhaps the most badass teacher in the series. He isn't only TheAce and RatedMForManly, but he never loses a fight on panel [[spoiler:until near the very end (and even then he still almost won)]] and one-shots one of the strongest antagonists in the series.
** Special mention to Asuma as well, who took on a group of Sound ninja about to kill his student... and beat every single one of them in under thirty seconds. While still smoking.
** And poor Iruka, a Chuunin Academy teacher who in episode one completely fools an AxCrazy colleague and protects Naruto... after having a giant shuriken (among other things) embedded in his back.
** Jiraiya. As one of the strongest characters in the series, he's badass from the word go; but its his students who really define him. [[TeleportSpam Namikaze]] [[TheGift Minato]], [[LaResistance Yahiko]], [[TheDragon Nagato]] / [[FallenHero Pain]], [[LadyOfWar Konan]] and [[AllLovingHero Uzumaki Naruto]].
* Seki-sensei from ''Anime/OjamajoDoremi'' isn't just a BadassTeacher, she's a BadassBiker.
* Stewart, the agent posing as a teacher in ''Anime/SonicX'', [[BecomingTheMask fell fully into the role]] and did everything in his power to protect the kids, most notably throwing off his orders to protect them during Chaos' rampage. Not to mention the episode where he gets captured along with some of the kids, and has to break out and protect them.
* ''Manga/SoulEater'' has the Shibusen faculty, with Stein as a particular example.
* The ''VideoGame/TalesOfSymphonia'' {{OVA}} has a scene where Raine takes out Lloyd with a ''piece of chalk'' when he was [[strike:not paying attention]] sleeping in class. And it ''knocked him down along with his seat''. That or she caught him off guard. Kratos would be disappointed.
* Yoko Littner from ''Anime/TengenToppaGurrenLagann'' may be the queen of this trope, managing to defeat two [[HumongousMecha Ganmen]] with just her rifle and a hoverbike in order to protect her students.
-->"[[PreAsskickingOneLiner This will be on the test, so remember well]]. Don't wreck people's houses! ''([[CrowningMomentOfAwesome strafes a Ganmen with over a dozen shots]])'' Don't take children hostage! ''(dodges the other Ganmen's attack)'' Don't threaten people with force! ''(finishes off the second Ganmen)'' That's it. Class dismissed. ''(DramaticGunCock, the Ganmens explode)'' You fail!"
* In ''Anime/WeissKreuz Gluhen'', history teacher Fujimiya Aya is the only person at Koua Academy to stand up to the AbsurdlyPowerfulStudentCouncil when they declare their control over the school, rushing to the defense of one of his students when S Class calls out a manhunt on the boy. Of course, this is mostly because both Aya and the student are undercover assassins investigating the school, although Aya ''probably'' would also have taken action to defend other innocent students if it had ever come up.
** One of Aya's fellow teachers, [[GenkiGirl Asami]], is ''very'' impressed by how Aya stands up to S Class, and does her best to emulate him when she stumbles across a severely injured and obviously terrified student on the school grounds. [[SubvertedTrope It doesn't go well for her.]]
* ''Anime/YuGiOhGX''
** Chronos-sensei. Not only does he stand up to Camula to protect the other students who are carrying Spirit Keys (and most especially the pride of the school at the time, Kaiser Marufuji Ryou), but in season three, he puts himself in between his students and a rampaging horde of duel zombies, to delay said zombies and prevent them from stopping the students from getting to where they could get the help they needed to leave the desert dimension. And both times, he knew he was going to fail. He did it anyway. He has his bad points, but when his students are threatened, he will put his foot down (and then get knocked on his ass, but he doesn't let that get him down!).
** You might also include Samejima, the school's headmaster. He was the one who originally [[TheMentor trained Ryo]], and was presumably no slouch. "Presumably" because he never actually won a duel on-camera. But then, [[InformedAbility there had to be a reason]] why he was running this place and a monastery devoted to the Cyber-Style of dueling before that...
* The titular character Heine in ''Manga/TheRoyalTutor''. He is well-versed in mathematics, history, chemistry, geography and several languages, despite having no university degree. He is also able to easily catch the already fast Leonhard on horseback who had a head start and when [[spoiler: Fuchs and his mooks threatened to physically harm Kai]], he was able to take care of them without breaking a sweat.

[[folder:Comic Books]]
* ''Franchise/MarvelUniverse'':
** Franchise/SpiderMan, for the brief time he worked as a science teacher at his old high school.
** The ComicBook/XMen are almost always badass, and this extends to their teaching careers at the Xavier Institute as well. ComicBook/EmmaFrost in particular is very protective of her students, probably because two of her previous classes of students were murdered.
*** ComicBook/KittyPryde also becomes one for [[ComicBook/AllNewXMen the time-displaced original five X-Men]].
*** In ''ComicBook/UncannyXMen'' Vol. 3, ComicBook/IllyanaRasputin also becomes one and has become more powerful.
* ''Franchise/TheDCU'':
** The ComicBook/{{Huntress}}, of the [[Franchise/{{Batman}} Batfamily]]. She's a crime-fighter by night and a high-school teacher by day. Just try to threaten "her kids".
** ComicBook/BlackLightning is also a teacher in his day job, and spends a lot of time trying to defend his students from the dangers of the streets. Often in costume.
** Chaim Levon from the ''ComicBook/GlobalGuardians'' was a Jewish school teacher before becoming the super hero Seraph and aiding Superman to dismantle bombs in Israel.
* The teachers at ComicBook/PS238 are almost all retired superheroes. This follows logically.

[[folder:Comic Strips]]
* In ''ComicStrip/{{Frazz}}'', Mrs. Olsen saves one of her students, Gabriella, by knocking her out of the way of an SUV driven by a texting driver. Both Mrs. Olsen and Gabriella suffer a broken arm.

[[folder:Fan Works]]
* In ''FanFic/OhGodNotAgain'', [[spoiler: Sirius]] gets to become a Hogwarts professor. Yeah, you heard that right.
* ''Fanfic/FutariWaPrettyCureBlueMoon'' has Ami-sensei, who, despite her [[DitzyGenius ditzy]] nature and constant striving for a promotion she'll never attain, is a GadgeteerGenius who built a machine to communicate across dimensions. Oh, and [[spoiler:she's a retired MagicalGirlWarrior who's aware of the danger that her students put themselves in on a regular basis. When things get serious, especially when the DistressedDamsel to whom she is an [[HonoraryUncle Honourary Aunt]] is involved, out come the plans, the super strength, and the friendship beams of death.]]
* ''FanFic/HarryPotterAndTheMethodsOfRationality'' features Professor Quirrell, who is as unlike his canon incarnation as possible. He stuns ''two hundred'' students with one spell to save Harry (ItMakesSenseInContext), can cast a Shield Charm strong enough to block fifty shield-breaking curses, glues bullies to the ceiling, and [[spoiler: has the Pioneer Probe plaque as one of his Horcruxes.]]
* Jack [[spoiler:and Brick]] in ''[[FanFic/SovereignGFCOrigins Origins]]'', a ''MassEffect''[=/=]''Franchise/StarWars''[[spoiler:[=/=]''[=Borderlands=]''[=/=]''[=Halo=]'']] MassiveMultiplayerCrossover. While they really do care about their students, that manifests itself in teaching them [[TrainingFromHell how to bring each other to death's door]]--''for real'' since bacta offers a massive healing boost afterward. They [[LampshadeHanging wonder]] [[TemptingFate what the point of all this is]] during a relatively peaceful time, until it turns out FasterThanLightTravel [[AlienInvasion has unforseen consequences...]].
* In ''FanFic/{{Horseshoes and Hand Grenades}}'', we have Chuta Ohsugi who is about the exact opposite than his canon portrayal. Instead of a ButtMonkey, we've got a determined man who is willing to go against the woman he crushed on (Sonada) with nothing more than a slipper and a costume glove, fight his chairman head on and even proclaim that ''he'' will be the next principal of Amanogawa High. Haruka Utsugi also counts as she's willing to fight off against [[TheDragon Leo Zodiarts]] with nothing more than a katana. In ''Month of Sundays'', Takashi Satake is also stepping up to be this.
* Furutani Katsuo, resident zanjutsu teacher and Yuzu's class advisor in ''[[https://www.fanfiction.net/s/6902577/1/Phases-of-the-Moon Phases of the Moon]]'' is this coupled with CoolTeacher. While he doesn't actually ''fight'' any of the people who bullies his class, he does make it very clear that he's firmly on his students' side, encourages his students (including ''Yuzu'') to beat up their opponents from other classes when challenged, and likes to remind people that he was once a seated officer in Eleventh Division. [[spoiler: And when Karin's class gets ambushed by Hollows in the living world while on a training exercise, he doesn't hesitate to fight in their defense, albeit in the background.]]
* The highschool history teacher Cole Anderson in ''Fanfic/BringingMeToLife'' off- and on-screen saves one of his students, Max Jameson, from [[TheBully Cecil]] and his {{Mooks}} Brandon and Dillon...then offers to teach Max martial arts to defend himself.
* ''FanFic/RosarioVampireBrightestDarkness Act III'': In chapter 41, Ms. Nekonome bravely stands up to Kuyou of all people, reminding him that he is no longer welcome at Yokai Academy and ordering him to get out. While she does lose some of her bravado when Kuyou draws his sword and comes after ''her'', just the simple fact that she's willing to stand up to an anti-human KnightTemplar who needs ''very'' little provocation to [[PlayingWithFire reduce humans and monsters alike]] [[KillItWithFire to smoldering piles of ash]] in the first place qualifies her for this.
* ''Fanfic/WeissReacts'': All of Beacon's staff, including the almost-literally AlmightyJanitor Beth Lupin, and [[HeelFaceTurn Cinder]]. Yes, even [[CloudCuckooLander Peter]] [[GreatWhiteHunter Port]] and [[Manga/FruitsBasket Tohru]] [[BadassPacifist Honda]] count here. Not to mention the [[RetiredBadass headmaster]], [[TheDreaded Ozpin]] [[OldMaster himself]]...
* In ''Fanfic/TheDarkSideOfTheMirrorVerse'', [[MirrorUniverse Mirror!Starlight Glimmer]] is this. Pinkamena describes her as a great teacher, and she is dedicated to helping others reach their full potential, but she's also TheDreaded and is implied to be extremely strong. Case in point, she mopped the floor with a stallion who was attempting to [[spoiler:beat up Rainbow Crash]] with little effort, and Fluttercruel at least fears the mare could [[MindOverMatter turn her into a pony pretzel with her mind]] if she felt like it. It's also said she trains ''Royal Guards''.
* In canon ''[[https://parahumans.wordpress.com/ Worm]]'', Mrs Knott is a run-of-the-mill Computers teacher. In ''[[https://www.fanfiction.net/s/10286919/1/Recoil Recoil]]'', she's a formidable boxer and an expert sniper. Nobody better mess with ''her'' kids ...
* ''Fanfic/ZeroNoTsukaimaSaitoTheOnmyoji'' has, in addition to the canon examples, [[spoiler:Saito himself, after he becomes Professor of Magical Morals]].
* Most of the teachers in ''Fanfic/SkyholdAcademyYearbook'' fall under this, Bull especially. When outside forces threaten their students and actively harm one of their colleagues, they join forces to take back the school. The badassery makes sense, given that the teachers are the inner circle of ''VideoGame/DragonAgeInquisition'' transplanted into a HighSchoolAU.
* Godzilla Junior becomes one in ''Fanfic/TheBridge'' after realizing Mariner Chibi Moon, a hyperactive fangirl he initially wrote off, was actually a lot like himself before he lost his innocence and becomes her sensei. Considering he's ''Godzilla'' and is a OneManArmy even in his unicorn form, this comes naturally.

[[folder:Films -- Live-Action]]
%%* ''Film/DangerousMinds'', with Michelle Pfeiffer.
* ''Film/KindergartenCop''. Bonus for being played by Creator/ArnoldSchwarzenegger, PapaWolf extraordinaire in his movies.
-->"You hit the kid, ''I'' hit ''you''!"
* Principal Duvall in ''Film/MeanGirls'' doesn't do anything typically badass during the film, but sometimes sheer presence is enough: looking at the man, especially when he's giving a stern lecture whilst wielding a baseball bat, just tell me you wouldn't a) hang on to his every word or b) not want to take him on in a fight.
* In ''Film/TheSubstitute'' movies, professional mercenaries infiltrate high schools as substitute teachers to weed out the crime rings keeping the rest of the school in fear.
* David Niven's character in ''Film/TheGunsOfNavarone'' was a chemistry teacher turned explosives expert. He's never shown around students, though...
* In ''Film/SavingPrivateRyan'', Captain Miller's occupation back home is a mystery to his men. It turns out he was a high school English teacher.
* Franchise/IndianaJones is never actually seen protecting his ''own'' students, but given he is a teacher with an extremely protective attitude towards kids, he probably counts.
* Principal "Crazy Joe" Clark, from ''Film/LeanOnMe,'' comes across as a SternTeacher, but in reality is a BadassTeacher for his entire school, chaining the doors during the school day to keep the students in and the bad influences out. Remembered largely for carrying a bullhorn and a baseball bat.
* Subverted in the film ''Film/BadTeacher'', where Creator/CameronDiaz plays it as being just as much a jerk to her students as she is to non-students.
* ''Film/HarryPotterAndThePrisonerOfAzkaban'': He's [[JerkAss a dick]], but what does Snape do when he sees Lupin transform? ''Instinctively puts himself between an out-of-control werewolf and his three least favorite students.'' This becomes even more apparent when you take into account that [[spoiler:this was the same werewolf that had nearly killed him as a teenager.]] And he didn't even have his wand!
* ''Film/XMenFilmSeries'':
** ''Professor'' [[Characters/XMenFilmSeriesProfessorCharlesXavier Charles Xavier]]. Specifically, with a doctorate in genetics. He can telepathically freeze entire airports full of people, co-opt the mind of anyone he can "see" and force them to be a perfect mouthpiece for himself, switch between bodies and even psychically control people if need be, despite the gravity of his puppet's own powers. And his strength has only increased with age.
** At the end of ''Film/XMen1'', Magneto asks Xavier what happens when someone finds out about his mutant school, and Xavier replies that he has a great deal of pity for anyone who comes to the school looking for trouble. In ''Film/X2XMenUnited'', he's proven right, when the teachers and caretakers fight side by side with some of the more powerful mutant students.
** [[Characters/XMenFilmSeriesWolverine Wolverine]] sarcastically claims to be an art teacher in ''Film/X2XMenUnited'', and serves as a substitute for Cyclops in ''Film/XMenTheLastStand''. [[spoiler:In the new future created at the end of ''Film/XMenDaysOfFuturePast'', it's explicitly stated that he's the history teacher.]]
* In ''Film/ByTheSword'', Max Suba, once he has Erin as a fencing student, is protective of her, and once she gets hurt, fights the already established badass teacher Villard over his teaching techniques and showing him just what happens if you are a ruthless sword fighter.
* In ''Film/{{Warrior}}'', Brendan is a physics teacher who is also a MMA fighter.
* Played with in ''Film/GodsAndGenerals''. Stonewall Jackson was a FourStarBadass who happened to have once been a mediocre math teacher.

* Creator/TamoraPierce is fond of this character type. If you're a character in one of her books who fails to take teaching seriously, you're probably a baddie.
* Quiet, unassuming Mr. Tidwell from ''Literature/{{Animorphs}}'' is actually a revolutionary fighter who has a symbiotic relationship with the Yeerk inside his head.
* Susan Sto Helit from Literature/{{Discworld}} becomes one of these in ''Discworld/ThiefOfTime''.
** From "Interesting Times", Teach. (At the end, he even goes berserk. After he's been mellow all his life).
* Most of the teachers in ''Literature/HarryPotter'';
** Mad-Eye Moody who became the new Defense Against the Dark Arts teacher in ''[[Literature/HarryPotterAndTheGobletOfFire Goblet of Fire]]'' would be the straightest example. Both, [[spoiler: the real Moody, even though he never gets a chance to actually be a badass while a teacher, and the fake Moody, who manages to do a great job of impersonating a badass]].
** Dumbledore gets special mention, as the one and only time he rebuked Professor Umbridge was when she started physically attacking one of his students. And the one and only time he ever got angry with Harry Potter was when Harry thoughtlessly suggested that Dumbledore was leaving the school unprotected. There is also his UnstoppableRage when a bunch of Dementors showed up at a Quidditch match. And when [[spoiler:fake Moody]] tries to kill Harry, our hero (along with, by extension, the readers) sees exactly why Dumbledore is the only wizard that Voldemort ever feared.
** As does [=McGonagall=]. Mess with her, and you get a disapproving glare. Mess with one of her students or colleagues, and she takes ''four'' [[FrickinLaserBeams Stunners]] to the chest ''[[NeverMessWithGranny at age seventy]]'' and bounces back with only a walking stick to show she was hospitalized for a month. Then, for an encore, she and Slughorn help an Auror take on [[BigBad Voldemort himself]] and live to tell about it, something that very few people have done.
*** Almost all of [=McGonagall=]'s interactions with Umbridge in ''Literature/OrderOfThePhoenix'' qualify as this. She repeatedly mocks or snarks at Umbridge, who could fire her with a word to Fudge if she wished, and encourages Peeves to screw with her. And when Umbridge starts trying to pick on Harry and the other students, [=McGonagall=] does her best to stop her or thwart her.
** Severus Snape. He was [[spoiler:a spy for Dumbledore, could fly without a broom, and during his spying days he lied to Voldemort's FACE for years]]. And he was an innovator, too. [[spoiler:He is in fact the Half-Blood Prince who was behind a number of innovative and sometimes ''nasty'' spells]]. And when he actually ''does'' teach, once you get past his {{Jerkass}}ery, he is ''focused''; he teaches with a purpose.
** Lupin also deserves a mention, being the only member of the Order of the Phoenix other than Dumbledore to survive the battle in the Department of Mysteries unscathed. He also happened to be the first ''competent'' Defense Against the Dark Arts teacher that Harry ever had--and in order to ''be'' a competent Defense teacher, this trope is practically a job requirement. There's a reason that the three best Defense instructors Harry ever had are on this list.
** Most, if not all, of the teachers [[LetsGetDangerous get dangerous]] in the Battle of Hogwarts in the [[Literature/HarryPotterAndTheDeathlyHallows final book]], using their significant magical knowhow to great effect. There's a reason that Hogwarts is often called "the safest place to keep something".
* ''Literature/TheDresdenFiles'', Has a few examples.
** Harry Dresden himself once he takes on Molly as his apprentice.
*** Molly's teacher in Ghost Story and Cold Days is none other than [[spoiler: Leanansidhe, who is second only in power to Queen Mab in the Winter Court]]
** Harry's second Teacher and [[spoiler: Grandfather]] Ebenezer [=McCoy=]. This is the guy who's responsible for [[spoiler: Krakatoa, the New Madrid Earthquake, and Tunguska, amongst others]]. He's mastered the ColonyDrop, and if you mess with [[spoiler: his grandson]], he ''will'' [[NotHyperbole drop a satellite on your head]].
** There is Odin who is hinted to be the teacher of the [[spoiler: Original Merlin]]. He's also [[spoiler: a BadassSanta, and mentors Harry]].
* The short story ''This Year's Class Picture'' by Dan Simmons has one of these who actually teaches a class of zombies after the ZombieApocalypse, and sits in a bell tower daily to mow down zombies invading her school. When the outside zombies mob together to attack her '''zombie''' schoolchildren, she burns them alive in a freakin' gasoline moat.
* Sister Montoya from ''Literature/WorldWarZ''. A badass ''nun'' teacher, who went on to join the army when they re-organized to start fighting zombies effectively.
-->Five three and a buck even, she'd protected her whole Sunday school class for nine days with nothing but a six-foot iron candlestick.
* Franchise/SherlockHolmes' ArchNemesis Professor Moriarty who is this, while being a ChessMaster.
* In the ''Series/StarTrekDeepSpaceNine'' novel "Fallen Heroes", schoolteacher Keiko O'Brian [[HeroicSacrifice holds off]] the marauding Bekkir long enough for Jake and Nog to escape. [[spoiler: It gets {{Reset Button}}ed, but it was still pretty awesome.]]
** This also qualifies as a MamaBear moment, because Keiko's primary motivation was to protect her daughter Molly who was also with Jake and Nog.
* Miss Chadwick, the quiet math teacher from the Creator/AgathaChristie novel "Literature/CatAmongThePigeons", tackles a gunman in order to protect her fellow teachers and one of the parents. [[spoiler: She doesn't survive the experience.]]
* Numair from ''Literature/TheImmortals''. He's very patient and does a good job teaching Daine how to train her wild magic, given that nobody knows much of anyting about it, but gods help you if you interfere. He'll demonstrate that he is, in fact, the strongest mage in Tortall.
** The rather similar character of Niko Goldeneye in ''Literature/CircleOfMagic'' as well. He doesn't go in for much combat, but he still has a temper that should not be crossed.
* Miss Wilson in the ''Literature/ChaletSchool'' series. Leading a group of kids to safety through a secret passageway, with a gang of angry Nazis in hot pursuit? I'd say that's pretty badass. Doubles as a MamaBear moment.
* Literature/TimeScout: Kit and Malcolm take it upon themselves to manage Margo's education in badassery. They hire Ann and Sven as tutor's for guns and close-quarters combat; two seperate sub-badassitudes, and not the sum.
* In [[LittleHouseOnThePrairie Farmer Boy]], Almanzo's teacher, Mr. Corse, is soft-spoken and rather on the smallish side. The oldest students in the school have a tradition of beating teachers nearly to death and breaking up the school--which tradition Mr. Corse proceeds to break by driving the boys out of the school with a [[WhipItGood blacksnake whip]]. The description of the damage he does and his complete lack of mercy is quite disturbing--particularly when he simply coils the whip after he's done and resumes teaching as if nothing had happened.
* Literature/PercyJacksonAndTheOlympians: Paul Blofis, Percy's step-father and English teacher proves to be this in the final book [[spoiler: when he stabs a monster ''he can't even see'' with a sword and brushes it off as 'having done fencing in college.']] Then again he had to be pretty badass just marry a woman's whose son is half god in the first place.
* Literature/CiaphasCain ('''[[TabletopGame/{{Warhammer 40000}} Hero of the Imperium!]]''') eventually gets to retire from [[AccidentalHero inadvertently]] being a [[BadassNormal Badass Commissar]]... in order to teach [[GenerationXerox another]] generation of [[BadassBureaucrat Commissars]]. The Imperium is [[InvokedTrope naturally expecting]] this trope to come into play, even before he starts working with three ''more'' Badass Teachers in order to protect the planet from an arm of the [[OhCrap 13th Black Crusade]].
* ''Literature/TunnelInTheSky'' has Deacon Matson. Short an eye and some fingers and a decorated survivor of the first interstellar expeditions. That includes an award for being the sole survivor of a disaster. He teaches college-level survival to high school students and believes that, instead of the sissy method of giving them any desired weapon, the students should go unarmed to a hostile ecosystem for the final test.
* Dimitri Belikov from ''Literature/VampireAcademy''. A badass dhampir guardian who teaches Rose how to use a stake. Eventually fights in a huge battle against Strigoi and takes several down in the process. Characters outright use the word "badass" to describe him!
* In David Klass' novel ''You Don't Know Me'' Mr. Steenwilly, the protagonist John's music teacher, is the only adult to notice [[spoiler:John's mother's boyfriend was physically abusing him and even took the initiative to follow him home one day. When the abusive boyfriend was beating John senseless, Mr. Steenwilly jumped in and saved John's life]].
* In ''Literature/HeraldsOfValdemar'' most of the teachers at the Collegia are this. Especially the Herald ones, but a good chunk of the Bardic and even Healer teachers are not ones to mess with. Heralds just stand out because not only do they teach they ''do''.
** Special mention goes to Alberich. Old, battle and fire scared warrior long before he even became a Herald. He's the only one to escue Herald White and is the resident Weaponmaster. He teaches the student how to fight and survive in a SternTeacher fashion. Because his teachings will not only save the lives of those the Heralds rescue but themselves. Also, should note that ''only with a handicap'' can anyone defeat him in a one-on-one battle.
* The Goldfish Robot in Sophia McDougall's ''Mars Evacuees'' is a Sadist and Misplaced Kindergarten Teacher, but when its students are endangered, it flies into battle against any danger without hestitation.
* In ''Literature/TheWitchlands'', Habim and Mathias, the protagonists' tutors, are both excellent fighters, and are both able and willing to cut throats and stab backs to help the girls.
* ''Literature/HereticalEdge'': Being a BadassTeacher is practically a job requirement ot be hired at Crossroads Academy, which is staffed by often centuries-old monster hunters.
* Many of the mentors in various fields in ''Literature/RangersApprentice'' are badasses, but special mention has to go to Halt, a LivingLegend BadassNormal whose [[DeadpanSnarker wit]] is as sharp as his [[ImprobableAimingSkills arrows]]. Mess with [[LikeASonToMe Will]] or [[NiceGuy Horace]], and ''you will regret it.''


[[folder:Live-Action TV]]
* ''Series/GameOfThrones'': Syrio Forel is Arya's unrivaled sword master.
* Takeshi Hongo of Series/KamenRider would like to do a [[FinishingMove Rider Kick]] to the monsters who harms not just his students, but to those who harm other people as well. And he's a BadassBiker too!
* Ian Chesterton and Barbara Wright from ''Series/DoctorWho''.
** Hell, the Doctor himself in the episode ''School Reunion''. And John Smith ends up being one [[spoiler: by sacrificing his life]] in "Human Nature"/"The Family of Blood".
** Danny Pink, former British soldier turned math teacher, [[spoiler: [[{{Determinator}} was able to resist being turned into a Cyberman]] ''[[UpToEleven after being killed]]'' and subsequently foiled the Master's latest plot to defeat the Doctor and humanity.]]
** Clara Oswald, who rides a motorcycle (which is enough to qualify her right there), steps away from her class because a paramilitary organization calls upon her whenever the Doctor isn't available, and is arguably the most powerful companion in the show's long history.
* Giles from ''Series/BuffyTheVampireSlayer''.
** Technically he's just [[BadassBookworm the school librarian]], he doesn't actually teach any classes. Except private ones after hours about vampire slaying for a select audience, of course.
** Riley Finn was a badass TA.
** Robin Wood is a Badass school principal and son of a Slayer. Even Buffy is amazed at how capable he is.
** Miss [=LeHane=] worked as one, and did a pretty good job of it as well, trying to stop the school from being turned into vampires. She's the freaking [[TheChosenOne Slayer.]] She whips Drusilia without breaking a sweat. And she's savvy enough to do well on the teacher part.
* Harry Senate from ''Series/BostonPublic''.
* Tommy Oliver in ''Series/PowerRangersDinoThunder''. He doesn't ''want'' to be badass, he [[IJustWantToBeNormal just wants to be an ordinary science teacher]]. Nonetheless, he shows that he's more than willing to step back onto the battlefield after [[RetiredBadass years of retirement]] if his students are threatened.
* Santiago Mancilla in RebeldeWay. You don't mess with Third Year. Period.
* The protagonist of ''Series/TheGreatestAmericanHero''
* The Hoshikawa [[SiblingTeam siblings]] of ''Series/ChikyuuSentaiFiveman'' are all {{Badass Teacher}}s.
* Most ''Franchise/StarTrek'' vets end up becoming instructors at Starfleet Academy if they aren't promoted to Captain in the future.
-->'''{{Website/SFDebris}}''': Our last stop's Reg, who has a special shuttlecraft waiting... Because why wouldn't he? He's a ''teacher!'' I remember when ''I'' took my first trip in the school helicopter. ''(contented sigh)''
* ''Franchise/UltraSeries''
** The human form of Series/UltramanEighty, Takeshi Yamato, took teaching middle school students as his job. Considering what he can do in Ultraman form, it's not a good idea to threaten his students.
** Also, the original Series/{{Ultraman}} qualifies, somewhat. Not his human host, but ''Ultraman himself'', who was actually a university professor back on M78.
* Mr Rimmer, headmaster of Series/WaterlooRoad.
* World History Professor Milton Fine, alias [[RoboticPsychopath Brainiac]] on ''Series/{{Smallville}}'' combines this with EvilTeacher and BadassBookworm for truly dangerous results.
* In ''Series/TeenWolf'', Ms. Morrell looks to be shaping up as one, if the end of season two is anything to go by, she's got ties to Deaton's past.
** Coach Finstock has a touch of this; ask the orderlies from Eichen House. Once they've stopped writing in pain on the music room floor.
* In ''Series/TheVampireDiaries'' Alaric Saltzman, history teacher by day, vampire hunter by night. On a few happy occasions, these two interests have synergized when he finds old documents about vampires.
* Though she never actually takes anyone down physically, Laura Roslin of ''Series/{{Battlestar Galactica|2003}}'' probably counts, considering she is a political badass who used to be a school teacher and will airlock anyone she sees as a threat to her people.
* Al's grade school librarian in ''Series/MarriedWithChildren''
* ''Series/KamenRiderFourze'', being a ''Kamen Rider'' series set in an American-style high school, naturally has several. ''Movie Wars Ultimatum'', which takes place five years after the end of the series, shows that Gentaro himself came back to teach at his old school and still becomes Fourze to fight the random monsters that crop up once in a blue moon.
* A sort of weird twist on this trope from Walter White of ''Series/BreakingBad.'' Walt ''is'' a registered badass, being a rising drug-lord and slowly amassing a criminal empire while on the surface being a gentle high-school Chemistry teacher.... but those two elements don't overlap. Walt sees teaching as a soul-sucking, miserable job he took only to support his family and clearly enjoys the rush and thrill of his criminal lifestyle much more. He couldn't give two shits about his equally-apathetic students, and is shown casually handing out failing grades and shooting down excuses for why they didn't study.
* In ''Series/BlackLightning2018'', the titular superhero's day job is that of a high school principal.

[[folder:Tabletop Games]]
* Creator/GamesWorkshop games:
** In ''TabletopGame/WarhammerAgeOfSigmar'' Ogroid Thaumaturges are highly sort after by Arcanite Cults, not only for their strength on the battlefield but also for their knowledge of magic and their ability to tutor the cabalís members in the use of [[PlayingWithFire pyromancy]].
** In ''TabletopGame/Warhammer40000'' the Mentors Chapter of [[SuperSoldier Adeptus Astartes]] typically second their highly trained squads to other Imperial factions to act as advisers and tacticians, as well as teaching them how to improve their battlefield doctrine.

[[folder:Video Games]]
* All three teachers in the ''VideoGame/RivalSchools'' series -- Hayato Nekketsu of Taiyo High, and Hideo Shimazu and Kyoko Minazuki of Justice High -- exhibit this trope to varying degrees.
* Raine of ''VideoGame/TalesOfSymphonia'' continues to teach her three students Lloyd, Colette, and Genis while they are traveling across the world on their quest. Then she fights monsters and bandits and half-elves and brings down holy light on enemies with devastating power. Her role as the group's primary healer further cements her as a ''BadassTeacher'', since she has spells that are used for the express purpose of protecting her students from harm.
* Attack the Blood Raven initiates, especially the ones trained by [[VideoGame/DawnOfWar Cyrus]], I dare you. Even if you're a SuperSoldier enhanced with demonic power.
* The instructors of Garden in ''VideoGame/FinalFantasyVIII'' qualify for this. Case in point: [[CoolTeacher Quistis]] [[HotTeacher Trepe]]. How did she once assist her students on the field? By taking down the [[SpiderTank giant spider robot]] that's pursuing them with a '''[[GatlingGood gatling gun]]'''.
* Serah Farron of Final Fantasy's "[[VideoGame/FinalFantasyXIII Lightning Saga]]" took a job as a teacher in the three years between the first game and ''VideoGame/FinalFantasyXIII2''. She earned the nickname of "Meanie Miss Farron" for how she reacts to students not doing their homework. She's also an ex-[[TouchedByVorlons l'Cie]], which means that she knows how to [[MagicKnight use magic]],[[labelnote:*]]although she's only able to put that knowledge to use due to some temporal distortions[[/labelnote]] and she's currently living on [[DeathWorld Gran Pulse]], which means she's a [[TheStraightAndArrowPath crack shot with a bow]].
* Keine Kamishirasawa of the ''VideoGame/{{Touhou}}'' series. Half-Beast history teacher and protector of the human village. Best portrayed in [[http://www.youtube.com/watch?v=A6oQkbJoRA0 this fanvid]].
* Franchise/ProfessorLayton, although we don't see a great deal of him interacting with his actual students in the archaeology classes he teaches, is certainly this for his apprentice Luke.
* [[spoiler:Jack]] in ''VideoGame/MassEffect3''. Also a CoolTeacher, judging by her students' comments towards her.
* ''VisualNovel/MagicalDiary'' gives us [[HippieTeacher Professor Potsdam]]. Sweet little old lady who calls her students such things as "starshines" and "cygnet" in utter sincerity, doesn't seem to quite get the idea of discipline...and is over six hundred years old, with all the power to match. When it comes to it, [[spoiler:Damien]] runs rather than face her on her own ground. [[spoiler:Not that she can keep him from coming back for the May Ball, if you decide to take him back.]]
* ''VideoGame/TheWonderful101'' features Mr. Wedgewood, aka Wonder Red and the leader of the eponymous heroes. The beginning of the game shows him getting separated from his students, and the rest of the game involves him rescuing them and saving the rest of the planet as well.
* The Didact from ''Franchise/{{Halo}}'' once taught at the "College of Strategic Defense of the Mantle", or simply the War College; it was in fact where he gained the name "Didact". He's also the leader of the Prometheans, the highest order of Forerunner Warrior-Servants, and one of the most capable warriors in the galaxy's known history.
* Professor Sycamore in ''VideoGame/PokemonXAndY'' is unlike any Pokémon Professor in previous games in that you can actually challenge him to Pokémon battles from time to time.
** From the same series, in ''VideoGame/PokemonSunAndMoon'', we have Professor Kukui. First of all, he studies Pokemon moves by actively ''taking'' them! Second of all, he's responsible for [[spoiler:having the idea of building a Pokemon League in Alola]], and third [[spoiler:he's the final battle before you become champion! [[NintendoHard He poses quite a challenge at that]].]]
* Kogoro is Mii's tutor in ''VideoGame/ProjectXZone'', as he tutors Mii while doing his detective work at the same time. He's also her BattleButler.
* Trying to attack a teacher or kill one of her students in front of her in ''VideoGame/YandereSimulator'' tends to be very, ''very'' risky. She'll pin the VillainProtagonist to the ground if she doesn't have the proper stats, giving the player a NonstandardGameOver.
--> "Just what do you think you're doing?"
* It's not touched upon much in the games, but Jeanne, who is every bit as badass as VideoGame/{{Bayonetta}}, moonlights as a high school teacher when she's not doing her witch thing.
* ''VideoGame/TheLegendOfHeroesTrailsOfColdSteel'' has a lot of badass teachers who work at Thors Military Academy; the principal uses a large spear, the school nurse is a FriendlySniper, the historian [[spoiler:is secretly the right hand man of the most powerful ChurchMilitant]], the math and science teacher is a powerful arte user in his own right, the military officer takes on robots with his sword, and the homeroom teacher of the heroes class is one of the most famous bracers of the empire. By ''Cold Steel III'', [[TheHero Rean]] ends up becoming this alongside Towa, Randy, Michael, and Aurelia.
* ''VideoGame/TheSecretWorld'' features this in spades from [[TheWonka Headmaster]] [[BlackMage Hayden Montag]] and Ms [[HotWitch Annabel Usher]] of [[WizardingSchool Innsmouth Academy]]; both of them are trained mages with encyclopedic knowledge of the Secret World, so they're already pretty high on the badass scale, but given that they're staff members at one of the most disaster-prone schools in the United States kicks their credentials into overdrive. Plus, Innsmouth Academy has recently been enveloped by the same catastrophe as the rest of Solomon Island, leaving the place infested with feral familiars and spectral alumni... and yet, Montag and Usher as still alive, still protecting their remaining student, and still weathering the storm. Plus, Montag has personal experience on killing familiars with "[[ShovelStrike a swift, decapitating blow with a spade]]."
->A teacher is only as good as his tools!

[[folder:Visual Novels]]
* Yui Shishido, or "Yui-sensei," from ''VisualNovel/CorpseParty''. What does she do when her students get trapped in a DarkWorld with seemingly no way out? She still tries to ensure her students' safety. When a ghost offers to [[DealWithTheDevil let her go if she sacrifices her students]], Yui-sensei [[DidYouJustFlipOffCthulhu tells him to stay the hell away from her students]]. Keep in mind, at the time, she was also trapped under a cabinet filled with knives. Not only does she keep rejecting the ghost's offers, but she manages to free herself. [[spoiler:She even pulls a HeroicSacrifice to ensure that Yoshiki and Ayumi escape a classroom before it falls apart. Not only that, but it's revealed she's encountered Heavenly Host before, and ''survived''.]] Yui-sensei ''never'' abandons her students.
* Souichirou Kuzuki in ''VisualNovel/FateStayNight'' in the Unlimited Blade Works route. TheDrifter who randomly came to town prior to the story and stayed at the local shrine. Despite being a perfectly normal human, he becomes the suspect of who Servant Caster's Master is. Simple mission: shoot him with a sleeping spell. If he is the Master then job well done, and if not then no harm done. Of course this doesn't turn out well when Caster warps in and saves him. But the battle is on our heroes' side! They've got Saber, the woman who is the strongest Servant! She gets past Caster and goes for Souichirou! And [[spoiler:THWACK. Souichirou counters and proceeds to unleash a SpamAttack on Manga/FistOfTheNorthStar levels.]] Yes, Souichirou just beat up [[spoiler: King Arthur]] with his bare hands.
** Bonus points for in the 2015 version, he is voiced by none other than Creator/LexLang himself.
** And then if you think back a day or two ago, this means he was also the one who snapped [[spoiler: Rider's]] neck in twain.
*** Even after [[spoiler:Archer betrays Caster and kills her]], he's back to being a normal human, he challenges [[spoiler:Archer]] to a one-on-one battle despite knowing he's going to be killed in one hit.
** Although not on Kuzuki´s level, [[SenseiChan Taiga]] is a 5th Dan in Kendo (who could´ve gotten alot further if her little strap on her shinai didn´t ban her from most tournaments) and a swordsman on level with [[LightNovel/KaraNoKyoukai Shiki Ryougi]].
* In the opening of ''VisualNovel/{{Tsukihime}}'', Shiki gets visited by Aoko Aozaki, and by the end of their little sessions, calls her Sensei from then on. Cue ''VideoGame/MeltyBlood'', where Aoko is a KungFuWizard specializing in FrickinLaserBeams.
* [[spoiler: Yumi Matsumiya]] from VisualNovel/TrueLoveJunaiMonogatari doesn't look like this, but fully shows why she deserves this title when [[spoiler: she and the MC find out that her fellow teacher Mikazaki is sexually harrassing Mayumi]] and when [[spoiler: a drunkard beats the shit outta the MC when he tries to protect her from him.]]

[[folder:Web Comics]]
* Sandaur'recherrai Val'Illhar'dro of ''Webcomic/{{Drowtales}}'' is the combat instructor of Orthorbbae and it is a simple task for him to beat just about any opponents with ease and more then willing to use a GroinAttack to do it. When his clan left Chel, he went with them to their home city of Nuqrah'shareh and taught the students who were there as well. [[http://www.drowtales.com/mainarchive.php?sid=7950 When he comes across a group of rebels attacking his students]], [[CurbStompBattle he charged in and killed all of them, unarmed, unarmoured and without taking a single hit.]]
* [[http://destinyfailsus.com/comics/17/#.T74DRcWFnCE Mr. Sly]] in ''Webcomic/DestinyFailsUs''.
* James Eglamore in ''Webcomic/GunnerkriggCourt''. As was [[http://www.gunnerkrigg.com/archive_page.php?comicID=559 his predecessor]].
** Not to mention Jones, who mentors mediums and ''beat Eglamore in a sword fight while unarmed.'' By blocking the sword with her ''face''.
** Kat's parents are scientists at the Court and she follows their footsteps. Her mother built a magitek computer to trap a body-stealing demon and in youth was building robots.
* Mr. Raven in ''Webcomic/ElGoonishShive''. He happens to be the son of an immortal, making him very old and very dangerous. Good with a SwordCane, and can summon a flock of exploding crows. Another case of [[BerserkButton don't mess with the students.]]
* Largo from ''Webcomic/{{Megatokyo}}'' is a subversion,because while he tries to do this, he just as often leads his students into danger.
** Although the fact that he's teaching an English class in Japan and doesn't speak Japanese is interesting. But they're still learning somehow.
-->"Doesn't Great Teacher Largo make you want to learn English so you can understand what he's saying?"
* Any of the teachers in ''Webcomic/MSFHigh''.
* [[Webcomic/DominicDeegan Miranda Deegan]]. A very evil mage once killed several of her students to get to her. She banished him to a realm of MindRape.
* In ''Webcomic/GirlGenius'', the caretaker for the students on Castle Wulfenbach is Von Pinn. [[http://www.girlgeniusonline.com/comic.php?date=20040903 Don't mess with Von Pinn.]] It is not pretty.
* Sidney Burns of ''Webcomic/MobTies''.
* ''Webcomic/Paranatural'' has the history teacher and Activity Club's sponsor, Rick Spender. He's a melodramatic dork and his bio claims that the words athletic, mysterious, and intellectual have nothing to do with him. While that's accurate, he has been said to have [[CrouchingMoronHiddenBadass defeated the singular strongest spirit.]] [[spoiler: When he fights the fire spirit Forge, it's revealed that said strongest spirit has possessed Mr. Spender (note that possession just means that Mr. Spender has access to the spirit's powers and the spirit doesn't die; Mr. Spender is still in control) and can control shadows, which lets him [[http://www.paranatural.net/index.php?id=288 trap Forge in a pit made from the shadow of a tree, then obliterates his lower half by using his partner spirit Lucifer's light powers to erase the shadow.]]]]

[[folder:Web Original]]
* Similarly, most of the teachers at [[SuperheroSchool Whateley Academy]] in the Literature/WhateleyUniverse, since many of them are retired superheroes. Even more frightening, some of them are retired super''villains''.
** Special mention may go to Mrs. Ryan, a kindly old lady who teaches Costume Shop I. She's very mild-mannered, knows her stuff, happily offers advice to any student who comes looking, [[spoiler:and used to be the notorious European A-List supervillain, Lady Hydra]]. Most students underestimate her once. Very few do so twice.
* [[EvilTeacher Coach Callahan]] from ''Literature/TalesOfMU. Aside from teaching such mundane classes as "Mixed Melee" and "Fighting to Disable", she is also one of the worst war criminals alive today. In her past, she has committed multiple genocides, stopped giants from taking over the world more than once, and has been charged with multiple counts of attempted deicide (most nations do not have laws against successful [[KillTheGod deicide]]).
* In the [[Blog/AskAPony Ask a Pony]] blog Blog/AskHoopsAndDumbbell, Dumbbell is a currently a [[BadassTeacher Badass Student Teacher]]. Before going for his Teaching License, he was offered a Pro Boxing position. It's been a few years, but he's still good enough to drop an unlucky mugger.
* The faculty of Beacon in ''WebAnimation/{{RWBY}}'' are all skilled Huntsmen and Huntresses. The most notable examples are Glynda Goodwitch, who can repair entire buildings with a flick of her wand and can take down Grimm without even looking, Professor Port, who treats Grimm like any GreatWhiteHunter would, and Doctor Bartholomew Oobleck, who is a bit more bookish than the other two but can total MiniMecha with one hit from his mace/napalm launcher/thermos. The most badass, however, is headmaster Ozpin, [[spoiler:who puts up one hell of a fight against a Cinder who has the entirety of the Fall Maiden's power, landing multiple hits on her in quick succession]].
* In WebVideo/YandereHighSchool, the gym teacher, Rowan, is [[spoiler: a SWAT person. His wife, Okami, the main teacher is also on the team.]]
* [[Myth/EgyptianMythology Set]] is the Egyptian God of the desert, storms and violence. In ''Roleplay/IliadQuest'', he is also a master of Egyptian Pugilism. This happens to involve [[ImprobableWeaponUser copious amounts of sand.]]

[[folder:Western Animation]]
* The Gromble from ''WesternAnimation/AaahhRealMonsters''. He is a SadistTeacher, but he'll also rain fiery vengance upon anyone who dares threaten his students.
* Brian Lewis, who for most of his screen time delves into MoralMyopia as an ApatheticTeacher on ''WesternAnimation/AmericanDad'', shattered a hot pot of coffee in Steve Smith's face when he learned Steve had just punched a very young exchange student everybody liked with absolutely no provocation.
* The core of the Order of the White Lotus from ''WesternAnimation/AvatarTheLastAirbender'' is made up of CoolOldGuy Badass Teachers: Iroh, Pakku, Bumi, Jeong Jeong, and Piandao.
** Also,[[spoiler: Gyatso, the ActualPacifist air monk. He took on a ''platoon'' of powerful firebenders, while they were juiced up on the comet that made each of them into a walking, talking, ''armored'' PersonOfMassDestruction. And killed. them. ''all.'' as they brought him down.]]
** Toph as well. She joins the group in order to teach earthbending to Aang, and she's pretty much ''made'' of badass.
*** She also opened up an academy after the war to spread her knowledge of metalbending, which she invented.
** ''WesternAnimation/TheLegendOfKorra'' gives us Aang and Katara's son Tenzin, the world's only master airbender. He shows himself to be quite badass, taking out chi-blockers and one of [[spoiler: Sato's mechas]] by himself, and has passed on his skills to his three BadassAdorable children.
*** [[spoiler: Tenzin really turns it UpToEleven when he takes on Zaheer, who has only been seen curb stomping opponents, and is able to hold his own against all 4 members of the Red Lotus until the finally overtake him.]]
* Laid-back HippieTeacher Mr. Van Dreissen attacks a guest speaker (somewhat wimpily) when WesternAnimation/BeavisAndButthead claim the speaker "touched" them.
** In a later episode [[DrillSergeantNasty Teacher/Coach Buzzcut]] walks in on the same speaker threatening the duo. Said speaker then unwisely attempts an attack on Buzzcut, an ex-Marine, who proceeds to beat the stuffing out of him.
---> ''"I do the ass-kicking around here!"''
** Van Dreissen's real CrowningMomentOfAwesome comes in ''Incognito'', where not only does he fail to show anything resembling fear when an unknown assailant shoots through the window of his classroom, after when Earl shoots back, driving the attacker off, Van Dreissen calmly confiscates Earl's pistol ''and Earl complies''. Sure it was supposed to be a satire about how desensitized to violence everybody has become, but it ends up making Van Dreissen look like a fearless BadassPacifist.
* The title character in the Pakistani show ''Animation/BurkaAvenger''- a schoolteacher who literally uses books and pens as weapons in the InUniverse martial art Takht Kabaddi to protect access to education and women's rights.
* In the ''WesternAnimation/CodeLyoko'' episode "False Start", [[ADayInTheLimelight Jim becomes one]], fighting [[BigBad Xana's]] monsters at Kadic while the regular cast battles the villain on Lyoko.
* The title character of ''WesternAnimation/{{Cybersix}}'', who's a literature teacher by day and a superhero by night. There's also her love interest, the BadassNormal biology teacher Lucas.
* ''WesternAnimation/ExtremeGhostbusters'': Professor Egon Spengler. Invented a portable nuclear accelerator; [[DidYouJustPunchOutCthulhu punched out Cthulhu]] [[UpToEleven and other, similar deities]]; led a one-man charge against an ancient demon called Achira...and mentored a new generation of Ghostbusters.
%%* Master Hamma from ''WesternAnimation/JohnnyBravo''.
* [[CrazyAwesome Ms. Frizzle]] from ''WesternAnimation/TheMagicSchoolBus''. C'mon, who wouldn't want to go one of her field-trips? (Besides Arnold, of course).
* The Flexer Teacher from ''WesternAnimation/{{Mixels}}''. She is serious when it comes to teaching, but will be first in line to protect her students from any threat that comes their way, and ends up being the leading Mixel in a [[FusionDance Mix]] that stops a rampaging Mixelopter.
* Some of the teachers from ''WesternAnimation/{{Recess}}'' in ''WesternAnimation/RecessSchoolsOut''.
** Of the four named faculty, two were accomplished martial artists, one was able to use his Janitorial Supplies as Improvised Weapons, and the other one was a HippieTeacher as well as TheCutie, and showed a perfect example of BewareTheNiceOnes. The principal handled capture pretty nicely as well. Course, one scene had all the teachers rappelling into the cafeteria to help the kids in the fight against the BigBad.
** Especially effective in that of the four named faculty, two are the main antagonists of the series, one an ApatheticTeacher who wants nothing more than to move up the career path and stop dealing with children, and the other is the very essence of a kids show SadistTeacher. But if you mess with their kids, you're going down hard.
** One episode had a substitute teacher fall into this trope. The gang goes to school, expecting a free day, only to be greeted by a teacher, whom Spinelli describes, after seeing some of his actions, having "zero fear."
* Principle Seymour Skinner from ''WesternAnimation/TheSimpsons''. While more of a RetiredBadass and a ButtMonkey in his civilian life, Skinner is a Vietnam veteran and was a relatively successful military officer back in the day. While he usually goes out of his way to avoid conflict, he has no qualms about kicking serious ass if the situation (rarely) calls for it.
** Case in point, beating up the blue haired lawyer and two [[{{Mook}} hired goons]] after being threatened with a lawsuit over just a trivial copyright.
---> "Copyright Expired"
* ''WesternAnimation/StarWarsTheCloneWars'' Anakin is this to Ahsoka. Pretty much every other Jedi with a Padawan counts as well.
* Xavier, Wolverine, and Storm in ''WesternAnimation/XMenEvolution'', along with Hank [=McCoy=] who was pretty tough ''before'' mutating into a blue, furry form.

[[folder:Real Life]]
* Drill sergeants in general.
* In the Finnish Army, schoolteachers are referred as reserve officers.
* Because of the threat of suicide bombings against a certain girls school in Afghanistan, the complex was walled with only one gate placed far away from the main school building. At this gate a single teacher would sit, watching the gate. If a suicide bomber entered the teacher would attack him and try to detonate the explosive, [[HeroicSacrifice killing them both]]. And if that's not badass enough, the teachers were 50 year-old women.
* [[http://en.wikipedia.org/wiki/Liviu_Librescu Dr. Liviu Librescu]] of Virginia Tech, personally [[YouShallNotPass kept the door shut]] to prevent gunman Seung-Hui Cho from entering the classroom so his students could escape. It took [[HeroicSacrifice five shots to take him down]]. Of course, he had a history, since surviving the Holocaust takes a {{Determinator}} in itself...
** The same can be said for the four other (murdered) professors who attempted to confront or stop Cho from hurting their students. Although, despite the fact all of them should be considered heroes who made the ultimate sacrifice, in all honesty Librescu still is the most BadassTeacher - he held the armed and physically healthy Cho off long enough for all but one of his students to escape, ''being 77 years old''.
* There is the Troops to Teachers program; former military members get certified to teach, then go to (generally dangerous) schools.
* [[OfficerAndAGentleman Joshua Lawrence Chamberlain.]] A university professor, he took a sabbatical to fight for the Union in the American Civil War, was wounded a half-a-dozen times, won the Congressional Medal of Honor for securing the crucial Union position on Little Round Top with a [[BayonetYa bayonet charge]], became a Brigadier General after he was given a few hours to live ([[NoOneShouldSurviveThat he got better]]), and presided over the Confederate surrender parade at Appomattox before returning to Maine where he served four terms as Governor and became head of the college and taught every subject [[EverybodyHatesMathematics except Math and Science]].
* Dr. David Benke, a math teacher at Deer Creek Middle School in Denver, tackled a gunman when he tried to attack the school. In a letter to the public explaining what happened, he wrote, "If we could have told the students what we felt before the incident happened we would have said, [[BadassCreed 'Not on my watch. On my watch you are going to be as safe as I can make you.']]"
* At a university-type MilitaryAcademy, many of the professors are usually commissioned officers.
* In Hanover, Germany, a 37-year-old kindergarten teacher named Ina Koenig saw one of her students fall down a mine shaft on a field trip. Immediately, she jumped in after him and kept his head above the extremely cold water at the bottom for two hours until help arrived, saving his life.
* The Sandy Hook shooting gave light to many badass teachers:
** Vicki Soto, a first-grade teacher, hid her kids in closets/cabinets and told the shooter that the kids were in an auditorium/gym. The shooter proceeded to shoot the teacher, but the kids survived. The mayor of Newtown wants to name one of the schools after her for her heroism. And she was all of twenty-seven.
** One of the teachers turned on the PA system to warn the rest of the school of the shooting.
** How did the principal die? She died lunging after the shooter, trying to stop him herself, probably knowing she was going to die.
* [[http://en.wikipedia.org/wiki/Jane_Haining Jane Haining]] and [[https://en.wikipedia.org/wiki/Sara_Salkahazi Sara Salkahazi]], two schoolteachers who died in UsefulNotes/WorldWarII for [[MamaBear refusing to abandon their pupils]], double as this and {{Badass Preacher}}s (Haining was a missionary of the Church of Scotland, Salkahazi was a nun).
* [[http://i1.kym-cdn.com/photos/images/original/000/074/285/professor_badass1.jpg Professor Badass]]. Otherwise known outside MemeticMutation as Kevin Stewart. And no, this isn't a photo shoot - this is how he rocks up to college on an ordinary day.
* Badass ''school receptionist'' in the form of [[http://www.npr.org/2013/08/22/214576953/911-call-captures-school-employee-talking-down-gunman Antoinette Tuff]], who managed to stop an ''armed gunman'' from hurting a single student. How? [[BadassPacifist By simply talking to him]], [[TalkingTheMonsterToDeath remaining calm]], [[ActionSurvivor and showing some compassion]]. She managed to keep her cool the whole time until police arrived, at which point she admitted to the 911 respondent (who had been listening in the whole time) that she'd been scared to death. Again, ''not a single person was hurt''.
* [[http://www.cnn.com/2016/01/26/us/indiana-school-bus/ Principal Susan Jordan]], of an elementary school near Indianapolis, Indiana, died on January 26, 2016 when she saw a bus suddenly jump the curb and was rolling towards two students. Without hesitation, she rushed headlong at the two children in harms way and pushed them out of the way while being fatally struck by the bus.