History Main / EvilTeacher

* ''The Teacher from the Black Lagoon'' and its many, many sequels would qualify as the best example if ''Series/TheXFiles'' hadn't taken that honor. "This is a whole boy. [[HalfTheManHeUsedToBe This is half a boy.]] Now you've learned fractions." [[spoiler: [[AllJustADream But they're always more or less in the main character's overactive imagination and the teahcers are more or less pleasant people]] most of the time]].

* ''The Teacher from the Black Lagoon'' and its many, many sequels would qualify as the best example if ''Series/TheXFiles'' hadn't taken that honor. "This is a whole boy. [[HalfTheManHeUsedToBe This is half a boy.]] Now you've learned fractions." [[spoiler: [[AllJustADream But they're always more or less in the main character's overactive imagination and the teahcers are more or less pleasant people]]]].

* ''The Teacher from the Black Lagoon'' and its many, many sequels would qualify as the best example if ''Series/TheXFiles'' hadn't taken that honor. "This is a whole boy. [[HalfTheManHeUsedToBe This is half a boy.]] Now you've learned fractions."

* ''WesternAnimation/TheSimpsons'': In "Nightmare Cafeteria", the third segment of "[[Recap/TheSimpsonsS6E6TreehouseOfHorrorV Treehouse of Horror V]]", the faculty of Springfield Elementary become cannibals to solve the overcrowding of students in detention and food budget cuts.

* Most of the teachers at ''WesternAnimation/BromwellHigh'' are just {{apathetic|teacher}} and/or dumb as a sack of bricks, but then we have Roger Bibby the deputy head / geography teacher. He is insatiably greedy and selfish, devoted to making money by any means necessary, abusive, manipulative, is on a first-name basis with demons, and has links to both the slave tread and diamond smuggling in Angola. Ironically, in spite of being easily the evilest teacher at the school, he's also probably the ''best'' teacher at the school because he's at least well-spoken, articulate, and actually knowledgeable.

* Yuri Shibasawa in ''Manga/BoysAbyss'' is the protagonist Keiji's homeroom teacher who becomes a {{yandere}} after [[TeacherStudentRomance starting a sexual relationship with him]] and does everything in her power to keep him all to herself, from [[StalkerWithACrush stalking]] to trying to alienate him from his other loved ones. She even calls a parent-teacher conference to subtly tell his ''mother'' to back off. What makes it especially tragic is that she was a CoolTeacher with genuinely good intentions in the beginning but [[FaceHeelTurn her own fears and insecurities took over]].

[[folder:Film]]

* ''Literature/HarryPotter'' fanfiction. ''Way'' too many people like to portray Dumbledore as a ManipulativeBastard who's setting up Harry as a HeroicSacrifice to defeat [[BigBad Voldemort]], in some cases with Dumbledore planning to take all the glory immediately after. A few fanfics also have him paying off Ron/Hermione/Ginny/whoever to be Harry's "friend" as a way for Dumbledore to spy on him.

* Yuri Shibasawa in ''Manga/BoysAbyss'' is the protagonist Keiji's homeroom teacher who becomes a {{yandere}} after [[TeacherStudentRomance starting a sexual relationship with him]] and does everything in her power to keep him all to herself, from [[StalkerWithACrush stalking]] to trying to alienate him from his other loved ones. She even calls a parent-teacher conference to subtly tell his ''mother'' to back off.

* ''WesternAnimation/PennZeroPartTimeHero'': The BigBad Rippen works as the art teacher at the heroes' school when not working as a part-time villain. Although, for what it's worth, he keeps his evil out of the school, being an ApatheticTeacher who is only there to pay the bills.

* [[spoiler:Dante]] of the [[Anime/FullmetalAlchemist 2003 anime version]] of ''Manga/FullmetalAlchemist''. [[spoiler:She's introduced as a kind old lady who was once Izumi's alchemy tutor, but it is eventually revealed that she is the BigBad behind the homunculi.]]

* ''Webcomic/AngelMoxie'' has an evil teacher, it's [[spoiler:the MisplacedKindergartenTeacher Mrs. Merriweather, who turns out to be a demonic underling of the villains]]. There's also [[spoiler:Mrs. Konk who is a robot, she's not evil though just a SadistTeacher]]

* ''Manga/GTOTheEarlyYears'': [[spoiler:Yoko "Nanno" Minamino]] is not only a SadistTeacher, he's also a [[{{Lolicon}} pedophile]]. His students use this information to blackmail him.

%%* ''Webcomic/AngelMoxie'' has [[spoiler:the MisplacedKindergartenTeacher Mrs. Merriweather]]. (Administrivia/ZeroContextExample)

* ''Manga/ShonanJunaiGumi'': [[spoiler:Yoko "Nanno" Minamino]] is not only a SadistTeacher, he's also a [[{{Lolicon}} pedophile]]. His students use this information to blackmail him.

[[folder:Fan Fiction]]

* The fill-in for Ms. Keane in ''WesternAnimation/ThePowerpuffGirls'' episode "[[Recap/ThePowerpuffGirlsS5EP6SaveMojoSubstituteCreature Substitute Creature]]" subverts this. The girls assume that he's mean and villainous because he's, well, monstrous looking. But his credentials as a qualified teacher show the girls otherwise.

%% Image selected per Image Pickin' thread: https://tvtropes.org/pmwiki/posts.php?discussion=1296405515000542800
%% Please do not change or remove without starting a new thread.

* Agatha Trunchbull in ''Literature/{{Matilda}}'' isn't just a SadistTeacher, it becomes obvious at the end that [[spoiler:she probably either herself murdered Miss Honey's father/her brother-in-law or at least had him assassinated.]]
* Coach Genghis - who is really Count Olaf in disguise - from ''Literature/ASeriesOfUnfortunateEvents''. (Not spoilered because... well, it's [[PaperThinDisguise Count Olaf we're talking about]]).
** Vice Principal Nero from the same book in the series is a true sadist. He makes Sunny (A BABY) work as his secretary, punishes people by taking away silverware and tying people's hands behind their backs during lunchtime.
* On of the Literature/DiamondBrothers novel ''Public Enemy Number Two'' has [[spoiler:SadistTeacher Mr. Palis turn out to have been "The Fence" all along]]
* Madame Morrible from ''Wicked''. Both [[Theatre/{{Wicked}} the musical]] and [[Literature/{{Wicked}} the book]].
* Miss Gaunt in ''Literature/GhostsOfFearStreet: Who's Been Sleeping in my Grave?''.
* ''The Teacher From The Black Lagoon'' and its many, many sequels would qualify as the best example if ''Series/TheXFiles'' hadn't taken that honor. "This is a whole boy. [[HalfTheManHeUsedToBe This is half a boy]]. Now you've learned fractions."
* Mrs. [[SdrawkcabName Gorf]] in the ''Literature/WaysideSchool'' series, who turned students into apples. There were several other evil teachers as well, including Mrs. Gorf's son who stole the students' voices and used them to call their parents and tell them they hated them and Ms. Nogard who used her mind-reading ability to make the students miserable and turn them against one another.
* PlayedWith in ''Literature/{{Animorphs}}''--Vice Principal Chapman is a high-ranking Controller whose [[PuppeteerParasite Yeerk]], Iniss Two-Two-Six, is a recurring foe, especially in the early books; however, the real Chapman is generally characterized by being a PapaWolf who gave himself to the Yeerks to spare his daughter. (Then again, a prequel book shows that someone with his surname, presumably supposed to be him, [[TheQuisling willingly sold out the Earth to the Yeerks]] as a teenager ForTheEvulz, though that seems so out of character that [[FanonDiscontinuity some fans try ignore it]].)

* [[Literature/SherlockHolmes Professor James Moriarty]].
* The ''Literature/YoungBond'' novel ''Literature/BloodFever'' has [[spoiler:Professor Peter Haight]], who appears to be a ReasonableAuthorityFigure but it as actually a member of a secret society dedicated to restoring the Roman Empire and who poisons the teenaged Literature/JamesBond when he gets too close to the truth.
* Brother Leon in ''Literature/TheChocolateWar''.
* ''Literature/DevinAndTheTeacher'' has the narrator insisting all teachers are evil.
* Professor Denovo, the protagonist's former mentor in ''Literature/ThreePartsDead'', is a ''monster'' in ways that take most of the book for the reader to really appreciate. [[spoiler:He once [[MindRape stripped Tara of free will]], then tried to have her killed when she rebelled. He is a self-made HumanoidAbomination. And he has a ''completely plausible'' plan to make himself something rather greater than a god.]]
* ''Literature/AlexRider'': In ''Point Blanc'', the eponymous Point Blanc is an exclusive boarding school for the troubled sons of wealthy families. There are only two teachers: MadDoctor Dr Hugo Grief and [[TheDragon his dragon]], the freakishly strong Mrs Stellenbosch. Aside from being unrepentant white supremacists, [[spoiler:Grief is secretly replacing the boys under his care with clones of himself to allow them to control the world in a generation.]]

* In the picture book ''My Teacher is a Monster!'', a young boy named Bobby thinks his teacher is one of these and visualizes her as a giant green-scaled monster. However, when he gets to know her better, he slowly realizes that she's really just a SternTeacher who can be friendly with him and her appearance gets progressively less monstrous until she's completely human-looking at book's end... well, except for when Bobby misbehaves in class.
* In the first ''Literature/WarriorCats'' book, Tigerclaw - Ravenpaw's mentor, and partial mentor to Firepaw before Bluestar - is a VillainWithGoodPublicity: he secretly murdered the Clan deputy in the hope of being chosen for the role, and intends to continue killing his way to leadership. He even tries to kill his apprentice Ravenpaw (who [[HeKnowsTooMuch witnessed the murder]]) by assigning him dangerous tasks (hunting in enemy territory, or at the rocks where poisonous snakes live).

* ''Series/BuffyTheVampireSlayer''
** The first season episode "Teachers Pet" had [[MonsterOfTheWeek Praying Mantis Lady]] (who started Xander's streak of attracting demon women).
** Principal Snyder reported to the Mayor and hinted that he knew more about events than he let on, but never got beyond "oblivious flunkie" territory.
** In season four, there was the KnightTemplar Psychology professor Maggie Walsh, head of the Initiative.
* ''Series/ChoujuuSentaiLiveman'': Great Professor Bias preys on promising young university students and coerces them to join the [[AcademyOfEvil Volt]] with the promising of gaining more knowledge, all while coercing them to give up their humanities and become more cold-hearted.
* ''Series/TheDoctorBlakeMysteries'': When Blake and Lawson investigate a murder at their old school, they discover the deputy headmaster is a SchoolyardBullyAllGrownUp who still enjoys tormenting those weaker than himself.
* ''Series/DoctorWho'': In [[Recap/DoctorWhoS28E3SchoolReunion "School Reunion"]], Deffry Vale School has new headmaster Mr. Finch, and the other teachers (and kitchen staff, and nurse) he brought with him. They're [[ToServeMan human-eating]] aliens who are both exploiting and killing the students in a plot to become gods.
* ''Series/FamilyTies'' - Mr. Tedesco, in the 1983 episode "The Harder They Fall", thanks to his sadistic, insulting personality. Several students have complained to their parents about his abrasiveness and sometimes cruel behavior in the classroom, including the parent of a student he says is a "loser" and a "pimple-faced liar", while advising that another student and her mother need to lose weight. At one point, when family patriarch Steven is trying to get an explanation from Tedesco, he makes crude remarks about Elyse, who had earlier punched him out.
* ''Series/TheFlash2014'' has The Thinker, aka Clifford [=DeVoe=], who is a former professor who becomes the BigBad of season 4.
* All teachers in ''Series/HouseOfAnubis'' tend to fall into this trope, most notably Victor, Vera and Miss Denby.
** Also tends to be subverted, as this is mostly just a title, and many of the teachers still do genuinely care for the students despite being part of the 'evil' group, most notably Jason, who had actually tried to HELP Patricia in the beginning and still cared about her well-being even after his FaceHeelTurn. Later it was revealed that [[spoiler:he had only joined Victor and the others because he was suffering a degenerative illness and immortality was the only way to save his life.]] Other examples of this are Mrs. Andrews, who [[spoiler:quits the society and leaves the school as she feels the students should come first]] and Mr. Sweet, who despite almost always taking Victor's side, [[spoiler:is Eddie's father]] and whenever the students are in trouble, chooses them over Victor. He also left the society in the second season to focus on being a good principle.

* PlayedForLaughs in ''Series/MontyPythonsFlyingCircus'' skit "Self-Defence Against Fresh Fruit". The teacher teaches the students how to defend themselves against fresh fruits, more dangerous than pointed sticks[[labelnote:*]]SHUT UP[[/labelnote]] by telling them to attack him with fruits, and then he killed the students one by one in the name of "self-defense", in an increasingly crazy ways (first shooting the student with a gun, then dropping a 1-ton anvil on another, then releasing a tiger to devour the rest).
* Mr. Sweeny in ''Series/NedsDeclassifiedSchoolSurvivalGuide'', most notably in the teacher's episode where he was actually labeled as the evil teacher who wants nothing more than to see you fail. Subverted later on, though, when Ned comes to the conclusion that no teachers are evil, and they just want to see you succeed. Along with this, Mr. Sweeny shows moments where he is actually a nice guy, just strict.
* In the ''Series/TheOuterLimits1963'' episode "The Special One", Mr. Zeno, an alien in human form, tutors gifted children, planning to indoctrinate them and use their advanced scientific skills to help his planet conquer Earth. Zeno kills one father who discovers what's going on, and [[spoiler:almost kills another before his current pupil (the son of Zeno's intended target) turns the tables on him]].
* ''Series/PowerRangersDinoThunder'' - Principal Randall, aka [[spoiler:aka Elsa, TheDragon to BigBad Mesogog. While Mesogog's human alter ego, Dr. Anton Mercer, also stood in as a teacher for a while, he doesn't count as Mercer was good and resisting Mesogog's control.]]
%%* ''Series/TheSarahJaneAdventures'' story ''Revenge of the Slitheen''.
* In ''Series/{{Smallville}}'' [[RoboticPsychopath Brainiac]] mixes this with BadassBookworm, EvilMentor, and OmnicidalManiac. No, he's not your average History Prof.
* Mrs. Argent and Kate Argent from ''Series/TeenWolf'': Both part of a hunter family that is out to kill most of the main characters and Kate even did burn down a house that contained all of Derek's family members and Mrs. Argent blatantly threating Scott with death if he continues to date her daughter.
%%* He's only briefly a teacher, but Cromartie from ''Series/TerminatorTheSarahConnorChronicles''

* Ms. Paddock from the second season ''Series/TheXFiles'' episode "Die Hand Die Verletzt". [[spoiler:She actually is a manifestation of demon Azazel.]]

[[folder:TabletopGames]]
* Every teacher in ''TabletopGame/MiskatonicSchoolForGirls''. It's pretty much the point of the game.
[[/folder]]

[[folder:VideoGames]]
* Baldi from ''VideoGame/BaldisBasicsInEducationAndLearning'' is a teacher who seems innocuous at first. He forces you to solve math problems to progress through the game, but if you get even a single question wrong, Baldi WILL kill you. To make things worse, some of the problems are [[FailureIsTheOnlyOption unsolvable on purpose]], so you are ''forced'' to make him come after you.

* In ''VideoGame/LifeIsStrange'', [[spoiler: Mark Jefferson seems to be a nice guy at first, but turns out to be the BigBad by the end]].

* In [[https://www.youtube.com/watch?v=MJnHkRgDnpc this trailer]] for ''VideoGame/WildStar'', the android teacher is rather cruel in her vivid descriptions of the brutal, gory deaths her students will likely suffer on Nexus, but then offers them an alternative (as in, a MercyKill).
* ''VideoGame/LittleNightmaresII'' has, well, the Teacher. She's a MonstrousHumanoid who can [[LongNeck stretch her neck to extreme limits]]. She is implied to be abusive towards her students both within the game itself and in promotional material, and she will attempt to catch and kill Mono if she finds him wandering throughout her school.
* ''VideoGame/LoveOfMagic'':
** Sarah is a 95-year-old Ceremonial Magician who attempts to cause trouble by throwing MC and Emily together in ways likely to cause Emily's father to want MC dead. [[spoiler:She then attempts to blackmail MC, gets her mind blown, and eventually becomes a necromancer.]]
** Torman is [[spoiler:Thor, Katie's grandfather. He tries to kill MC in an attempt to cripple the Courts in order to make them a more tempting target for the Outsiders. He got the job by ambushing Booker, the actual Evoker professor.]]

* In ''VisualNovel/PhoenixWrightAceAttorneyDualDestinies'': Professor Aristotle Means is a seemingly friendly law teacher that teaches his students that "The ends justify the means", and that a defense lawyer should use any methods necessary to win a court case. [[spoiler: It turns out he's taking bribes, and murdered another teacher when she found out, trying to get one of his students convicted in his place.]]
* In ''VisualNovel/ChaosChild'', it is revealed both in [[spoiler:Hana's]] and [[spoiler:Serika's]] routes that [[spoiler:Shuuichi Wakui]] was secretly working for the Committee of 300 all along.

* ''Webcomic/AngelMoxie'' has [[spoiler:the MisplacedKindergartenTeacher Mrs. Merriweather.]]

* ''Webcomic/{{Aisopos}}'': The teacher in Agoge. He beat up Lenius just because he was late, threatened him to cut one of Aesop's limps and then, Daross to bring him back, or else he would kill his brother.
* As shown in the page image above, ''Webcomic/ThePerryBibleFellowship'' has Mr. Rex, a tyrannosaurus rex who serves as a teacher for a school of dinosaurs. And as parasaurolophus student Pete ends up learning the hard way after being called by Mr. Rex to "[[DeadlyEuphemism see him after class]]" for throwing a paper airplane at him in the middle of a lesson, he ''EATS'' his students for misbehaving.

* ''WesternAnimation/CourageTheCowardlyDog'': Episode 52 Part 2: "Perfect" had a mysterious old teacher approaches him, and strictly trains him into becoming a perfect dog. It's particularly notable for unleashing [[https://www.youtube.com/watch?v=0AXseEnXtsc this memetic nightmare fuel]] unto the world.
* Denzel Q. Crocker from ''WesternAnimation/TheFairlyOddParents'' slides from a simple pathetic SadistTeacher to truly evil depending on the episode. Compare the SympatheticPOV Crocker in "The Secret Origin of Denzel Crocker!" to the maniacal dictator he becomes in the MadeForTVMovie episode ''WesternAnimation/AbraCatastrophe''.
** The episode "No Substitute for Crazy" features a new seemingly friendly substitute teacher; however after Timmy wishes for her to become his permanent teacher the CoolTeacher façade drops and she is revealed to be a more ruthless and cruel fairy hunter than Crocker, torturing her students until she finds out which one has fairies.
* Headmistress from ''WesternAnimation/MuchaLucha''. (Well, most of the time. She does have a softer side that she occasionally shows.)

* ''WesternAnimation/XMenEvolution'' has Bayville High's Principal Darkholme [[spoiler:that is, Raven Darkholme, a.k.a. Mystique]]. Kelly was no slouch, either, especially after mutants were exposed.

* While you would have expected this type of villain to have been common in ''WesternAnimation/CodenameKidsNextDoor'' (the heroes fought evil adults, after all), the team tended to have bigger problems with evil ''students'' than with teachers. In fact, the closest they ever came to a villain like this was Mrs. Thomson, the [[OurWerebeastsAreDifferent Were-Dog Queen]], and [[spoiler:[[NotEvilJustMisunderstood she was a subversion]], having been inflicted by the curse of lycanthropy by an angry ex-husband. She turned out to actually be a rather decent sort in the end.]]
%% * Mr. Mufflin from ''WesternAnimation/FanBoyAndChumChum'' who is also the show's BigBad.
* The fill-in for Ms. Keane in ''WesternAnimation/ThePowerpuffGirls'' episode "Substitute Creature" subverts this. The girls assume he's mean and villainous because he's, well, monstrous looking. But his credentials as a qualified teacher show the girls otherwise.
* Mother Goose from ''WesternAnimation/TeenageFairytaleDropouts'' bullies the main trio after they pushed her BerserkButton.
* ''WesternAnimation/PennZeroPartTimeHero'': The BigBad Rippen works has the art teacher at the heroes' school when not working as a part-time villain, while his minion Larry is the school principal. Although, for what it's worth they keep their evil out of the school, with Rippen being an ApatheticTeacher who is only there to pay the bills until he can become a full-time villain and Larry [[MinionWithAnFInEvil not being very evil in the first place]].
* ''WesternAnimation/TheSimpsons'': In 'Nightmare Cafeteria', the third segment of "Treehouse of Horror V", the faculty of Springfield Elementary become cannibals to solve the overcrowding of students in detention and food budget cuts.

So you have a [[SadistTeacher cruel, mean, bully of a teacher]], say the most banal sort of evil, that's got to make school life pretty harsh right? Well it could be worse, they could actually be evil on a much grander scale with much loftier plans.

This includes {{Mooks}} and Murderers whose day job is teaching, all way up to {{Big Bad}}s who pose as teachers as part of the {{Masquerade}}. Not too uncommon in WakeUpGoToSchoolSaveTheWorld situations, but can also appear in other works which are set in a school or University.

Sometimes this does overlap with the SadistTeacher but it isn't too uncommon for [[HippieTeacher some iteration]] of [[MisplacedKindergartenTeacher supposedly "nice"]], [[SternTeacher and/or well liked, teacher]] to be secretly evil. Perhaps so secretly even [[TomatoInTheMirror they don't know]].

* Harumi Saotome of the Higa team in ''Manga/ThePrinceOfTennis''. This is the guy who actually orders his pupils ''throw balls at the rival coaches to injure them'', and throws tantrums when they don't go along with it.
* Kuzuki of ''VisualNovel/FateStayNight'' is a bit of a subversion. [[spoiler:He's well-liked among the students, and isn't actually evil. He's just amoral and has no problem going along with Caster's plans, which involve mass murder.]]
* ''Franchise/YuGiOh'':
** In the original manga, it was hard to find a teacher in Domino High who ''wasn't'' evil, or who at least wasn't a creep. The worst was probably Ms. Chono (called "The Wicked Witch of Expel" by her co-workers behind her back for the sadistic way she punished students) who was so bad that Yami actually inflicted a Penalty Game on her to teach her a lesson. (And compared to most of them, she actually got off easy.)
** Professor Cobra, the BigBadWannabe of Season 3 of ''Anime/YuGiOhGX''.
** Calling Napolean (also from ''GX'') evil may be a stretch; he was certainly a {{Jerkass}}, but he did have some good points. Eventually, he made a complete HeelFaceTurn.
** Professor Chronos was much the same.
** Then there was Professor Satou. He probably could be considered a WellIntentionedExtremist because he felt he had to eliminate Judai, thinking that Judai (who was a hero despite being a poor student) was a bad influence on the other student. (He failed to realize that he was little more than an UnwittingPawn for Cobra, and it cost him in the end.)
*** He didn't care at all that Cobra was willing to let Asuka drown in order to help him win the duel. ''Definitely'' evil.
** Ayukawa wasn't evil in the least; she was one of the sweetest members of the faculty of Duel Academy. However, when much of the cast became [[BrainwashedAndCrazy Duel Zombies]] during Season 3, she was one of the most dangerous, and probably should be mentioned.
** There was also Professor Ukyo from ''Anime/YuGiOhZexal''. He really wasn't any more evil than anyone else who was [[BrainwashedAndCrazy corrupted by a Number]] but he probably deserves notice.
** Himika Akaba from ''Anime/YuGiOhArcV'', the chairwoman of [[OpposingSportsTeam LDS]] is a morally dark-grey variant. She attempted to take over You Show by rather predatory means of pinning an incident on Yuya, but she intends to add his [[WrongContextMagic Pendulum Summoning]] to her school network to better combat [[AcademyOfEvil Academia]]. Even then, [[EducationMama there's her relationship]] [[WickedStepmother between her and Reira]]...

* [[spoiler:Yuu Nikaidou-sensei]] of ''Manga/ShugoChara'', who is only a teacher as it involves screening children from Seiyo Academy to see if they possess the legendary "Embryo" as their "Hearts Egg". As the best way to draw out a "Hearts Egg" is to make a child become filled with self doubt about their aspirations for life, and usually means that without outside help they get their dreams crushed and he is a ChildHater, he's presented as evil.
* The teacher in ''Manga/ASilentVoice'', who not only actively allows for a deaf student of his to be bullied and tormented constantly, finds it fun to watch and even ''encourages'' it. When he and the class are in danger of being called out for this, he uses one of his students as a scapegoat, shifting all blame onto him. Said student spends the rest of the year facing ''worse'' torment than the deaf girl and once again the teacher allows and encourages it readily.
* Professor William James Moriarty of ''Manga/MoriartyThePatriot'' is actually a CoolTeacher who is [[BadassTeacher protective of his students]], but when he's not teaching or doing mathematics research, he's actively plotting or committing murders and views himself as the devil.
* ''Manga/ShonanJunaiGumi'': [[spoiler:Yoko "Nanno" Minamino]] is not only a SadistTeacher, he's also a [[{{Lolicon}} pedophile]]. His students use this information to blackmail him.

* ''ComicBook/SensationComics'': Don Enrago is hired as a fencing instructor at Holliday College, but unknown to everyone he despises women and is disgusted at the idea of women being competent fighters. He uses his position to sabotage fencing gear prior to a competition in the hopes that his students and those they're fighting will be killed and captures one student with plans to torture her to death, though she is rescued in the nick of time by Franchise/WonderWoman.

* Kitano in ''Film/BattleRoyale''. Although this is almost [[JustifiedTrope justified]] by the fact that the world has gone to hell and the students are unruly to the point of stabbing him at random in the hall. He doesn't actually do anything malevolent to them until after they've left school and he enrolls them in the BR program

* In ''Film/HotFuzz'', [[spoiler:the schoolteacher is one of the members of the villainous NWA.]]

* All the movies in ''Film/TheSubstitute'' series will usually reveal that one of the other teachers (in the first film, it was ''the principal'') is actually controlling the criminal operation that the ActionHero teacher needs to dismantle.
* The Assistant Principal, and the super-teachers he hires, in Korean action-comedy ''VolcanoHigh''.
* One of the biker gang in ''Film/WeirdScience'' indicates he is this as the bikers are retreating from Wyatt's house:

* Terence Fletcher from ''Film/{{Whiplash}}'' is a more realistic example. Fletcher's goal is to train the next great jazz musician, but will stoop to any low to achieve that goal. Even if it includes lying, harsh language, intimidation, or even physical violence.
* Sam Lombardo in ''Film/WildThings'' is a guidance counselor at a prestigious Florida high school who rapes one of his students when he gets the chance. [[spoiler:Before it's revealed that he's a different kind of bad, as they were working together to con the girl's rich mom out of millions of dollars. Sam just seems to be a lying sleazeball...but at the end we learn that he's been sleeping with Kelly for a long time, thereby committing ''statutory'' rape.]]

* Kinpatsu Sakamochi from ''Literature/BattleRoyale'' is the FauxAffablyEvil bastard who oversees [[DeadlyGame the Program]]. He fancies himself the class's new teacher, a role he gained after [[KlingonPromotion having their previous teacher killed]], and will gladly have his students killed for such [[SarcasmMode heinous infractions]] as [[DisproportionateRetribution whispering while he's talking]]. In his first scene in the book, Sakamochi goads a student into a blind rage by claiming he [[RapeIsASpecialKindOfEvil raped the woman who took care of him when he was an orphan]], and then uses the boy's fury as an excuse to [[BoomHeadshot shoot him in the head]].
* ''Literature/TheDemonHeadmaster'' - kinda [[RoleCalled evident from the title]]. He's only a teacher in the first book, but the protagonists keep calling him "the Headmaster" because that's how they met him.
* ''Literature/HarryPotter'': given that it's set in a WizardingSchool this isn't surprising. Most of the books had one, usually the [[HighTurnoverRate Defense Against the Dark Arts]] teacher. [[spoiler:Snape is presented as an Evil Teacher but proves not to be. He's still a SadistTeacher though.]]
** ''Literature/HarryPotterAndThePhilosophersStone'' - [[spoiler:Quirrell, though he was TheMole so he didn't act harshly to the students.]]
** ''Literature/HarryPotterAndTheChamberOfSecrets'' - [[spoiler:Lockhart wasn't working for the villains, but the degree of selfishness it takes to steal others' memories for fame and be willing to let an eleven-year-old die to maintain his reputation probably counts as a banal kind of evil.]]
** ''Literature/HarryPotterAndThePrisonerOfAzkaban'' - none. [[spoiler:[[BadassTeacher Lupin]] certainly wasn't evil... well, maybe for [[OurWerewolvesAreDifferent one night]] every month if he didn't get his wolfsbane potion...]]
** ''Literature/HarryPotterAndTheGobletOfFire'' - [[spoiler:Moody (though he's NotHimself, but Barty Crouch Jr. in disguise), and Igor Karkaroff as Ex-Death Eater turned coward Headmaster.]]
** ''Literature/HarryPotterAndTheOrderOfThePhoenix'' - Umbridge, former trope namer for TyrantTakesTheHelm, whose idea of detention involves students magically carving words into their own hands by writing lines (this one isn't spoilered because, well...ItWasHisSled).
** ''Literature/HarryPotterAndTheDeathlyHallows'' - [[spoiler:The Carrows, who were installed by Voldemort and aren't so much teachers as anti-Muggle propagandists. They're less subtle in their prejudice than Umbridge, and even more sadistic. Umbridge tortured students herself, while they encourage their favourites to torture other students.]]

If they don't like teaching, a SadistTeacher can result. If they [[BecomingTheMask do like it]], they'll often end up a BadassTeacher. One rank up is the EvilPrincipal.

** Suguru Teshigawara is a {{Yandere}} StalkerWithACrush on Azusa, and eventually [[spoiler:kidnaps her]]. When Onizuka and Azusa's sister Makoto foil his plans, he goes off the deep end and [[spoiler:barricades himself inside the school with hostages and {{molotov cocktail}}s]].
** Hajime Fukuroda is mainly a HarmlessVillain, but he still has an unhealthy obsession with the teenage girls he teaches.

If they don't like teaching, a SadistTeacher can result. If they [[BecomingTheMask do like it]], they'll often end up a BadassTeacher.

->''"Thanks for accepting my request for help after I only asked once, Lexi. Normally, it takes at least two requests, and some kind of message, like a finger in a box."''
-->-- '''Principal Skidmore''', ''Series/ANTFarm''