->''"The greatest thing the Devil ever did was make you people believe he didn't exist -- and you're looking at him right now. I am the devil himself and all of you stupid, mindless people fell for it. You all believed in the same make-believe superhero that the legendary [[Wrestling/RickySteamboat Ricky 'The Dragon' Steamboat]] saw some year ago today. No, you see, you didn't know anything. You followed me, hook, line and sinker -- all of you did and I'm not mad at you. I just feel sorry for you."''
-->-- '''Wrestling/CMPunk'''

A character that is thought to be one of the good guys turns out to have always been evil.

For example, the hero is searching for a very special treasure. Too bad he doesn't know his way around. He meets a very nice person who offers to help the hero find the treasure. But wait, wasn't the temple supposed to be toward the south? Then why are you walking north? And why won't his guide answer his questions? And oh drat, there's the BigBad. That "guide" was his minion, and thus evil all along.

Compare BigBadFriend and BaitTheDog. Contrast GoodAllAlong.

See HiddenEvil for subtropes. Not to be confused with FaceHeelTurn, which is a legitimate good guy going evil. This is when the character was always bad and faking good, not a fall to the darkside.

Administrivia/NoRealLifeExamplesPlease. [[noreallife]]



[[folder:Anime & Manga]]
%%* [[spoiler:Jack Vessalius]] of ''Manga/PandoraHearts''.
* ''Anime/{{Pokemon}}'':
** Other examples exist, like in the movie ''Anime/PokemonJirachiWishmaker'', where Butler seems like a good guy but is actually evil and tries to abuse Jirachi. He does make a HeelFaceTurn, however.
** And Domino from ''Anime/PokemonMewtwoReturns'', who seems like a good-natured ditzy teenage girl but is actually a mean, hyper-efficient Team Rocket operative who is working directly under Giovanni.
* In ''Anime/DigimonAdventure02'', Ken was the evil Digimon emperor all along. This is made ''glaringly obvious'' from his first appearance onwards.
** In his first official appearance in ''Anime/DigimonSavers'', Akihiro Kurata claimed to want to help Data Squad and his old friend Commander Sampson. He showed his true colors soon enough.
* ''{{Manga/Naruto}}'':
** Kabuto Yakushi actually did manage to pull off the "helpful, harmless stranger" routine pretty well. From his [[AffablyEvil personality]], to his [[MinoredInAssKicking appearance]] there's very little to tip you off to his being a threat. [[spoiler: He was trained from childhood specifically for this, having worked as a spy on behalf of the Hidden Leaf Village from within all of the other major ninja villages.]]
** Shinnō of''Anime/NarutoShippudenTheMovieBonds'' spent fifteen years posing as a kind doctor, CoolOldGuy, and even a ParentalSubstitute to Amaru when in reality he's a callous, [[LackOfEmpathy heartless]] {{Jerkass}} who was secretly using the nearby villagers' negative emotions to gather dark chakra for the [[EldritchAbomination Zero-Tails]]. Not only that, but it's revealed that he himself taught Orochimaru several of his trademark reincarnation techniques.
** [[spoiler:Sasuke Uchiha]] is revealed to have been this in Chapter 692. Promptly after [[spoiler: Kaguya]] is sealed away, with Obito and Madara also defeated, he announced his plan to [[spoiler: kill the Kages and seal away the Tailed Beasts]], revealing that his supposed HeelFaceTurn was really just an EnemyMine.
* Blackbeard from ''Manga/OnePiece'' encourages Luffy to continue to pursue his dreams after he is mocked by another pirate crew. This guy would go on to defeat Luffy's elder brother Ace and hand him over to the World Government. When his and Luffy's goals cross over in Impel Down, he gloats about this in his face, provoking a small fight.
* The anime version of ''VideoGame/BlueDragon'' has one of these in the form of [[spoiler:Zola]] near the end of the series. Though it appears at first that it's just a simple FaceHeelTurn, the characters try to fool themselves into thinking that. Evidence in the last episodes proves otherwise.
* In chapter 50 of ''Manga/MiraiNikki'', Akise claims that [[spoiler:Yuno is the actual villain, who used Yukiteru, and plans to drive him to the brink of despair and kill him in order for her to become God. It seems that Akise was right and wrong at the same time. [[{{Yandere}} Yuno wants to kill him, but only so they can be]] ''[[{{Yandere}} together forever]]'' via an endless cycle of {{Peggy Sue}}s. [[MindScrew Maybe.]]]]
* In the last minutes of the final episode of ''Anime/PantyAndStockingWithGarterbelt'' [[spoiler:we find out that Stocking is actually a demon.]]
* [[spoiler:Walter]] from ''{{Manga/Hellsing}}'' (only in the manga).
* ''{{Manga/Bleach}}''
** Aizen.
-->"The Aizen you knew...'''[[ThatManIsDead never even existed]]'''."
** [[spoiler: And Ginjou, who, with the help of his accomplice Tsukishima's ability, manages to make it seem as though he and Tsukishima are enemies (because courtesy of Tsukishima's power, [[MemoryGambit he actually believes they're arch-enemies]]), enabling him to get close to Ichigo and use him in his plan until it involves Tsukishima using his power on him again, reverting him to normal]].
* Rasati and Lillia's guardian in ''Manga/ElementalGelade''. He broadcasts it from a mile away, but Rasati doesn't seem to notice.
%%* [[spoiler: Fuuma Kotarou]] from ''Manga/NabariNoOu''.
* In ''Anime/YuGiOhZexal'' [[spoiler: There was Rei. ''Dear God'', Rei. At first, he called himself a "Barian Guardian", and though it was clear he was a native of the Barian World, he seemed to be a decent guy who opposed the evil plans of the others, befriending Yuma and offering to help him. As it turned out, this was cruel deception. His true identity was Vector, who was not only evil, but likely the most evil and sadistic member of the Barians (or any villain of the current series) to date. (To make this worse, it is very likely that he was actually subordinate to an even ''stronger'' Barian.)]]
* ''Manga/AttackOnTitan'' zigzags this all over the place, due to the GreyAndGrayMorality of the series.
** [[spoiler: Annie Leonhart, Reiner Braun, and Bertolt Hoover]] are revealed to be [[TheMole enemy spies]] sent to infiltrate the military and responsible for much of the bloodshed during the first half of the series. Then things become more complicated, with the revelation that while they are enemies....they are also complex, emotionally-damaged {{Tyke Bomb}}s who express remorse over their actions and don't seem to have any choice but to carry out their mission.
** The Military Police Brigade are infamously corrupt, but turn out to have a special Branch that operates out of the Capitol. This branch is the SecretPolice charged with protecting the GovernmentConspiracy, primarily through torturing and murdering such dangerous individuals as weapons inventors, {{Bold Explorer}}s, curious miners, teachers that question official versions of history, and powerful officials' mistresses. When the Survey Corps gets a little too close to the truth, they launch an extermination campaign against them by framing them for murdering civilians, smearing their already-poor reputation through propaganda, destroying their hideouts, arresting any of them that can be found, and sending out specialized units to kill them on sight. Their field leader is a former SerialKiller turned PsychoForHire, while another prominent member is a TortureTechnician.

[[folder:Comic Books]]
* Infamously, Terra from ''ComicBook/TheJudasContract'' arc of ComicBook/TeenTitans. She's arguably the first character who was TheMole all along, and she didn't even reform.[[note]]Unless you count the "second Terra", since right up until her death the writers flip-flopped on whether she was a clone of the original, or the original with amnesia.[[/note]] Her goal the entire time was to take down the Titans because she hated how goody-goody they were.
* Every time [[ComicBook/XMen Mystique]] seems like she is going through a HeelFaceTurn, it will [[SubvertedTrope end like this]]. In one alternate future her name becomes the equivalent of Judas. Somehow she's just that good at faking it that people who know her full history still get taken in when she pretends to be reformed.
* In ''ComicBook/AvengersVsXMen'' [[spoiler: Magik]] is revealed to be this, and a MagnificentBitch to boot.
* ''ComicBook/ArchieComicsSonicTheHedgehog'': Geoffrey St. John is revealed to have been in league with [[EvilSorcerer Ixis Naugus]] since the days of the Great War.

[[folder:Fan Works]]
* Vaticus Finch in ''FanFic/TheTaintedGrimoire'' was not revealed as evil to Clan Gully until later.
* [[spoiler:Bachiko and Meiko]] in ''Fanfic/PerfectionIsOverrated'', [[spoiler:being the [=SUEs=] responsible for infiltrating Fuuka Academy, playing "matchmaker" for various characters, and posing as Mai's friends to monitor their progress]].
* ''FanFic/FriendshipIsAura'': [[spoiler: Cerberus]] turns out to be much more intelligent than he let on, and has been scouting out Equestria for [[BigBad Lord Tartarus]] for ages.
* In the ''FanFic/PonyPOVSeries'' [[BadFuture Dark World]], this is the case with [[spoiler: [[TheVoice the Nameless Passenger]], who turns out to be the true BigBad, [[HeWhoFightsMonsters Nightmare]] [[KnightTemplar Eclipse/Paradox]].]]

[[folder:Films -- Animation]]
* In Disney's ''Disney/{{Tarzan}}'', in turns out Clayton was planning all along to capture and sell Tarzan's gorilla family.
* Obviously, Ursula was this in Disney's version of ''Disney/TheLittleMermaid'', but that one was very much expected.
* In the movie ''WesternAnimation/IceAge'', Diego is EvilAllAlong. He makes a HeelFaceTurn, however, and becomes a member of the crew in the sequels.
* In the ''WesternAnimation/KimPossible'' [[TheMovie movie]] ''[[WesternAnimation/KimPossibleMovieSoTheDrama So The Drama]]'', the boy for whom Kim falls turns out to be working for Drakken.
** And a [[RoboticReveal robot.]]
* In ''Disney/AtlantisTheLostEmpire'', [[spoiler:Rourke and the other mercenaries (everyone on the expedition ''but'' Milo) were EvilAllAlong. Fortunately a DownerEnding is averted when everyone but Rourke and Helga do a HeelFaceTurn.]]
%%* [[spoiler:Mr. Sykes, Ernie & Bernie]] from ''WesternAnimation/SharkTale''.
%%* [[spoiler:The Mayor of Dirt]] from ''{{Rango}}''.
* [[spoiler:Stinky Pete]] from ''WesternAnimation/ToyStory2'' seems nice enough at first [[spoiler:but is so obsessed with staying in mint condition for exhibition in a museum that he'll stop at nothing to keep Woody from having second thoughts, even if it means manipulation and threats, and especially harbors resentment against space toys such as Buzz Lightyear]].
** From the PilotMovie of ''WesternAnimation/BuzzLightyearOfStarCommand'', there's [[spoiler:Warp Darkmatter, Buzz's supposedly-DeadPartner who is in fact TheDragon to Zurg and had been on his payroll since the academy]].
** [[spoiler:Lotso]] from ''WesternAnimation/ToyStory3'' [[spoiler:[[FauxAffablyEvil has a warm-looking personality]], but is revealed to run the daycare center out of the other toys' fear, and later on in the garbage dump leaves Andy's toys for dead [[UngratefulBastard after his life gets spared]]]].
* [[spoiler:Ben Ravencroft]] from ''WesternAnimation/ScoobyDooAndTheWitchsGhost.'' [[spoiler:He claimed that his ancestor, Sarah Ravencroft, was wrongfully accused of being a witch and that he is trying to find a journal that belonged to her so that he can clear her name. But then it turns out that Sarah really was a witch and the journal that Ben was looking for was actually a spell book that he planned on using to bring Sarah back from the dead so that they can rule the world together... only to be shocked when he does so and Sarah reveals that she would rather destroy the world than do so.]]
* [[spoiler: Dr. Glickenstein]] from ''WesternAnimation/{{Igor}}''. After being fed-up with [[spoiler: [[TheDitz Igor]]'s failure and disapointment, he turned evil]].
* [[spoiler: [[PrinceCharmless Prince]] [[ManipulativeBastard Hans]]]] from ''Disney/{{Frozen}}'', he only pretended to [[spoiler: love Anna so he can take over the kingdom.]]

[[folder:Films -- Live-Action]]
* ''Franchise/IndianaJones''
** Used in ''Film/RaidersOfTheLostArk'', in which the guide at the beginning runs away with the treasure.
** Indy's father may have smelled the HoneyTrap, but Indy himself didn't in ''Film/IndianaJonesAndTheLastCrusade''. Was anyone else surprised?
** In ''Film/IndianaJonesAndTheKingdomOfTheCrystalSkull'', Indy's friend [[spoiler:turns out to have lied about being good near the end of the movie, though it's kind of obvious even before he admits it. He's shown having left a trail of beacons for the Soviets to follow.]]
* In ''StarWars [[Film/RevengeOfTheSith Episode III: Revenge of the Sith]]'', Chancellor Palpatine turns out to be Darth Sidious, the head of the Sith. [[TheChessmaster And he's been playing both the Republic and the Separatists, along with the Jedi, for complete schmucks.]] This was hardly a surprise to the viewers, who had already seen Palpatine as the Emperor in ''Film/ReturnOfTheJedi''.
* ''Film/{{Dragonheart}}'': Though it is initially assumed that Prince Einon being revived by a portion of Draco's heart to have turned him bad, he eventually reveals that he was evil before that, and in fact [[DeceptiveDisciple played Bowen for a fool]] to learn how to fight.
* ''Film/{{Alien}}''. Ash is revealed to be a robot, working for The Company to bring an alien back, at the expense of the other crew members if necessary.
* [[spoiler:Ferriman]] in ''Film/GhostShip'' poses as [[spoiler:a meek weather service pilot]] to lure the crew of the ''Arctic Warrior'' to the ''Graza''. He proves himself useful throughout the film and even seemingly saves Epps from an insane Murphy, but it's all an act. He's actually working for Hell and started the massacre on the ''Graza''. It's implied he's done this many times over, with the fresh bodies in the laundry room being from a previous crew he led into the trap.
* ''Film/X2XMenUnited'': [[spoiler: Magneto, who, right after saving the mutants of the world, can't resist seizing the opportunity to use Stryker's technique against humanity.]]
* ''Film/StarTrekIntoDarkness'': [[spoiler: Admiral Marcus gives off the impression that he's a ReasonableAuthorityFigure. He's actually an InsaneAdmiral who worked with and tortured former EvilOverlord Khan Noonien Singh. Marcus also wanted to sacrifice the crew of the ''Enterprise'' just so he could jump start a war with the Klingons.]]
** Not the only example either. [[spoiler: John Harrison, the terrorist that Admiral Marcus sent the Enterprise crew after who seems like he's actually an okay guy being manipulated by Marcus just like the heroes? Turns out that he ''is'' Khan Noonien Singh. And he's out for revenge [[DisproportionateRetribution on the entire Federation]] for what Marcus did to him.]]
* [[spoiler: Miranda Tate/Talia al Ghul]] in ''Film/TheDarkKnightRises''. Not ''too'' surprising if you catch a certain ChekhovsGun, but it's a blink-and-you-miss-it shot and easily overlooked.
* On a large scale, in ''Film/CaptainAmericaTheWinterSoldier'' we learn that [[spoiler: SHIELD as an organization was EvilAllAlong, having been infiltrated by the Nazi organization HYDRA ever since SHIELD's creation at the end of WWII.]]

* ''Literature/HarryPotter''
** Subverted: it appears that [[spoiler:Snape]] was evil all along after [[spoiler:he kills Dumbledore]]. But then it turns out that [[spoiler:it was all part of Dumbledore's GambitRoulette and Snape really was [[GoodIsNotNice good despite being a total jerkass]]]].
** A more straight example: Peter Pettigrew, a.k.a. Ron's pet rat Scabbers, who turns out to be the one who betrayed Harry's parents to Voldemort and concealed himself as a rat for 12 years, leaving his friend Sirus Black to receive the blame.
** There's also the matter of [[spoiler:Mad-Eye Moody]] in ''Literature/HarryPotterAndTheGobletOfFire''. Even though it's not really [[spoiler:Mad-Eye, but AxCrazy Barty Crouch Jr. impersonating him]] it's still an EvilAllAlong situation.
** [[spoiler:Professor Quirrell in the first book seemed to be just an ordinary teacher who wore a turban just because. Turns out,he's really a minion of Voldemort who wears a turban to hide the fact that Voldemort is on the back of his head.]]
* Nicolae Carpathia in the ''LeftBehind'' books, though nobody but the Tribulation Force and those who have once been in Nicolae's close circle of friends really know just how evil Nicolae is under the public persona he projected up to the midpoint of the Tribulation. After he is indwelt by Satan, Nicolae's façade slowly cracks and the public gets to see the true person underneath. Strangely, though, Jesus berated Nicolae in his TheReasonYouSuckSpeech, saying to him that YouCouldHaveUsedYourPowersForGood, which became a point of contention for some readers.
* In Creator/JackVance's ''The Gray Prince'', the eponymous Prince was a childhood friend to heroine Schaine; and for most of the book she firmly keeps in mind that, whatever his [[BigBadFriend present political views]], he once [[IOweYouMyLife saved her brother's life.]] And then it turns out he in fact hated their family to the point of deliberately allowing her brother to be horribly injured and only claimed credit for the deed later.
* Played with, though not exactly subverted, in BrandonSanderson's ''{{Warbreaker}}'', as [[spoiler:Denth the mercenary, who has been leading princess Vivenna in her quest to overthrow the government of T'Telir (under the pretense of following her orders), betrays her, murders her best friend, and tries to steal her [[LifeEnergy Breath]].]] She is surprised, but [[spoiler:since he had been warning her the entire time that [[ExactlyWhatItSaysOnTheTin he could not be trusted]], she felt kinda stupid, too.]] Best line: [[spoiler:[[RunningGag "Do you know what I hate most about being a mercenary, Princess?]] Fulfilling the stereotypes. Everyone assumes they can't trust you. The thing is, [[IWarnedYou they really can't.]]"]]
** In the same book, [[spoiler: Bluefingers, the God King's benevolent, fatherly, somewhat timid chief scribe, is the BigBad and Denth's employer. He's not terribly evil as Big Bads go- the book casts him as a WellIntentionedExtremist and WordOfGod describes him as a good man who got carried away- but he's still the ultimate mastermind behind the threats facing the protagonists, and the kingdoms of Hallandren and Idris more generally]].
** BrandonSanderson seems to like this one. In ''Literature/TheStormlightArchive'' [[spoiler: King Taravangian is presented as a kindly, if somewhat scatterbrained, authority figure who is famous for sponsoring hospitals in his city-state. He's actually TheChessmaster behind at least one of the major conspiracies active in Roshar and his hospitals are a cover to allow him to study the prophetic statements people have sometimes started making immediately before death]].
* ''Literature/TheDresdenFiles'': [[spoiler:Martin]] in ''Changes'' turns out to be a Red Court infiltrator. [[spoiler:{{Subverted}} in the end, as it turns out he performed a HeelFaceTurn long ago and his apparent betrayal of the heroes was actually part of a BatmanGambit to wipe out the ''entire freaking Red Court'' with their own curse. Only Harry knows the truth.]]
* ''Literature/ABrothersPrice'' has [[spoiler: Kij Porter, who Ren considered a close friend.]]
* [=ForceFlow=], Tash's Internet-friend in ''Literature/GalaxyOfFear''. Turns out he was the BigBad all along and giving ''lots'' of people information about the Jedi in the hopes of luring them to touch his [[LifeEnergy Essence Stealer]], hoping one of them would be Force Sensitive so he could study their essence and what made it different.
* ''{{Abarat}}'' Book 3: [[spoiler: BOA ]]. YES, HER OF ALL PEOPLE. [[Main/WhamEpisode WHAM EPISODE]] UP TO THIRTEEN.
* [[spoiler:Zalasta]] in ''[[TheElenium The Tamuli]]'' is revealed as the BigBad after he has befriended 90% of the cast, and after he saved their lives in a pitched battle.
%%* [[spoiler: Neferet]] from ''Literature/TheHouseOfNight''.
* After proven to be in good guys' side by the end of the ''Literature/JamesBond'' novel ''Literature/NobodyLivesForEver'', [[spoiler:Sukie Tempesta]] returns in ''Literature/{{COLD}}'', only to be revealed to be in cahoots with the book's BigBad (alongside with her now criminal family), to the point of planning to actually marry him. The hows and whys relating to this revelation is swept aside by having her suddenly be insane.
* ''Literature/VampireAcademy'':
** In ''Vampire Academy'', [[spoiler:it turns out Natalie was doing Victor Dashkov's dirty work the whole time]].
** In ''Blood Promise'', Avery Lazar acted as a friend to Lissa and Adrian. Was revealed to be manipulating them for her own ends. She had no problem on driving Lissa to suicide.

[[folder:Live-Action TV]]
%%* ''Series/BuffyTheVampireSlayer'': Granted, Severin only appears to be good for an issue and a half before TheReveal.
* ''Series/TheSecretCircle'' does this with John Blackwell, though this was fairly obvious to some people.
* ''Series/TrueBlood'' tends to do this a lot, especially with their BigBad of the season. As it turned out, [[spoiler:Rene Lenier]] was just hiding behind his nice exterior while being a bloodthirsty sexist murderer, and in a more extreme example, [[spoiler:Maryann Forrester]] who turned out to be a freaking homicidal Maenad. Season three followed suit with the FauxAffablyEvil [[spoiler:King Russel Edgington]] who quickly turns into a genocidal maniac, and season four arguably averts it by giving it's BigBad [[spoiler:Marnie]] a bit of a FaceHeelTurn. Or rather, it shows her StartOfDarkness.
** Played somewhat straight with Rev. Newlin (Jr.); although it was clear from the beginning on he was more than just another bigot, few viewers were expecting him to turn into a full-fledged villain who imprisons the protagonists and wants to burn another character to death. Given, no-one was expecting him to become [[spoiler:a vampire!]]
%%** What about the fairies?
* [[spoiler:Boyd Langdon]] in ''Series/{{Dollhouse}}''. Turns out he was secretly the BigBad all along and running a ridiculously complex EvilPlan with Echo and co. at the center. And he seemed like such a nice guy. Although he wasn't completely evil. He was more of a WellIntentionedExtremist in the end.
* ''Series/VeronicaMars'': Cassidy starts by raping Veronica and then lying about it (which isn't revealed until later on), but he becomes truly evil in Season 2. He kills a bus full of his classmates, a witness could turn him in, and 3 people on a plane. This wasn't revealed until the finale but yes he was evil.
* ''Series/{{Supernatural}}'':
** [[spoiler:Ruby]] was the only demon who had so far actually helped the Winchesters, [[spoiler: yet the season four finale showed us that she was working for Lucifer all along and she helped Sam specifically for him to kill Lilith, and so bring back Lucifer to the Earth.]]
** In the episode "Repo Man". Back when they were hunting Lilith, Sam and Dean exorcised a demon out of a man names Jeffrey. Now in season seven, women were dying in the same way the demon killed them back then, so the brothers return to town. It turns out [[spoiler: Jeffrey and the demon were working together and had a relationship.]]
** In the finale of season eight, [[spoiler: it turns out that the angel Metatron, who advised the brothers on the last trial to seal Hell and was guiding Castiel in another set of trials to seal off the now corrupt Heaven, was not as harmless as he appeared -- he didn't warn the Winchesters that completing their trials would kill Sam, and the trials he was helping Castiel with were actually components of a spell to banish ''all'' angels from Heaven as petty revenge for being cast out himself.]]
* ''Series/TwentyFour'' has [[spoiler: Nina Meyers in Day 1, Charles Logan in Day 5, and Tony Almeida (sort of, it kind of gets complicated) in Day 7.]]
** As well as [[spoiler: Dana Walsh during Day 8.]]
** [[spoiler: Jack (somewhat) during his RogueAgent period in Day 8 is debatable. He definitely undergoes a FaceHeelTurn during that point, though it's left unclear if he did so immediately after the double whammy of Renee's death and President Taylor's betrayal of him and his claims that he was just trying to expose the Russian conspiracy were outright lies, which if so would loosely follow this trope, or if he did genuinely mean to follow this out and only abandoned it for the notion of killing everyone involved after murdering Dana. There are some hints that lean toward the former, including a "I was perfectly fine settling with justice, but that was taken from me!," rant near the end of the series.]]
* In ''Series/LOST'' it turns out that [[spoiler: Henry Gale]] was really the backstabbing, manipulative leader of the Others...
* ''Series/{{Scandal}}'': [[spoiler: Billy Chambers and Cyrus.]]
* ''Series/{{Haven}}'' had [[spoiler:William]], who at first seemed to be a kind, mysterious stranger who helps Audrey recover her memories and get back to her friends. Then he turns out to be a cruel, remorseless man who enjoys [[SuperEmpowering giving people]] out of control powers to cause untold destruction.
* In ''Series/AgentsOfSHIELD'', [[spoiler: Agent Garrett is revealed to be [[BigBad The Clairvoyant]], and Agent Ward is TheDragon to him]].
* ''Series/SleepyHollow'': [[spoiler: Henry Parrish the Sin-Eater, the heroes' supposed ally, is revealed in the first season finale to actually be Jeremy Crane, Ichabod and Katrina's supposedly dead son, who agreed to serve [[BigBad Moloch]] as the [[HorsemenOfTheApocalypse Horseman of War]] [[DealWithTheDevil in exchange]] for escaping being BuriedAlive and the chance of revenge on his parents for abandoning him. Everything else he did up to that point in the series was to [[BatmanGambit earn the heroes' trust so he could betray them at the opportune moment]].]]

* Several times in [[Creator/CharlesDickens Dickensian]] [[TheParody parody]] ''Radio/BleakExpectations'', the person helping Pip Bin with his latest scheme, such as the engineer who Pip employed to build a sewage system under London, is [[PaperThinDisguise blatantly]] his evil nemesis Mr Gently Benevolent (in that case planning to dig out the capital, float it across the Channel with hot air balloons and sell it to the French).

[[folder:Video Games]]
* In ''[[VideoGame/DeadOrAlive Dead or Alive: Dimensions]]'' Genra is revealed to be a manipulative and power-hungry man, willing to do anything to get revenge for playing second-fiddle to the main branch of the clan, and that his loyalty and honor are just a facade to hide it. On top of it all, [=DOATEC=] didn't kidnap him and turn him into [[SuperSoldier Omega]]; he went right to them and ''let'' them do so.
* ''VideoGame/{{Tekken}}'': In the original game, Kazuya appears to be TheHero, planning to defeat Heihachi in the tournament and take over the Mishima Zaibatsu. By the time ''2'' rolls around, he's revealed his true colors and, now in charge of the Zaibatsu, proves to be far more openly brutal and evil than Heihachi ever was.
* The Big Bad in ''VideoGame/ShounenKinindenTsumuji'' is revealed to be [[spoiler: Fubuki]] who first appeared as a helpful person, however halfway through the story he orders Tsumuji and Chijimi to stop their journey, as soon they encounter him once the shadow tower appears his true self is revealed.
* As shown in the ''[[VideoGame/LegacyOfKain Legacy of Kain]]'' series, Moebius the Time-Streamer was the devious manipulator he is ''waaaay'' before being driven insane by the corruption of the Pillars.
* In the part in ''[[VideoGame/MarioAndLuigiPartnersInTime Mario and Luigi: Partners in Time]]'' where Princess Peach gets a purple mushroom on her face -- it's not Peach. It was Princess Shroob the whole time, trying to take over the future castle.
** And her big sister does EVEN BETTER - [[spoiler:most people are GenreSavvy enough not to trust a random NPC who shows up out of nowhere with no foreshadowing whatsoever - but put on a FAMILIAR COSTUME (Star Spirit) and they'll trust you just fine]].
* ''VideoGame/FireEmblem''
** In ''Fire Emblem: The Sacred Stones'', this happens to Lyon. Everyone knows he's being devoured by the demon king, but that doesn't stop the main characters from believing he's still good.
** Lyon is an [[FightingFromTheInside interesting case]] where he actually [[GenreSavvy invokes this trope]] to get [[TheHero Ephraim]] motivated to [[DeathSeeker kill him]] so that he [[CannotSelfTerminate could]] [[DyingAsYourself die]] before the [[BigBad Demon King]] brings about the end of the world. He claims that all of their time they spent together as children he was pumping the siblings for information for the invasion of their kingdom just to make Ephraim angry enough to actually kill him.
** Also, Orson appears to be evil all along too, but unlike Lyon, you can actually play him as a character. Later he appears as a boss.
* In ''VideoGame/AnotherCode'' for the DS, Ashley's father's old coworker was evil all along, having killed Ashley's mother and stuff.
* ''VideoGame/EternalDarkness'': At the start of Lindsey's chapter, a friendly patron by the name of Paul Augustine leads him to the Cambodian temple where Mantorok is entombed. Then it turns out that Augustine was actually Pious using an illusion spell.
* In the Nintendo DS version of ''VideoGame/DrawnToLife: The Next Chapter'', you get a new Raposa to join the gang, named Sock. You find him in a town where he doesn't live, and he goes with you to find his real home. Well, you're supposed to believe that. Near the end of the game Sock asks for a valuable item, gets it from Jowee, and throws it away. He then appears to be Wilfre all along. It also goes for Mari a bit, although she just thought she would help everyone by it (she worked with Wilfre).
* ''Franchise/{{Pokemon}}''
** In ''VideoGame/PokemonColosseum'', the mayor of Phenac city is actually the head of Cipher. In ''VideoGame/PokemonXDGaleOfDarkness'', the same goes for Mr. Verich.
** In ''VideoGame/PokemonRanger'' an old man you help, named Gordor, is actually the head if the Go-Rock squad. In ''Pokémon Ranger: Shadows of Almia'', a teacher in the ranger school, Mr. Kincaid, actually works for an evil organisation Team Dim Sun. Also The organisation Altru and their leader Blake Hall are evil, while you don't know that till the end of the game.
** [[spoiler:Dusknoir]] from ''PokemonMysteryDungeon 2''. In the ''Explorers of sky'' remake, you learn that he's extremely skilled at pulling this off.
** In the main series, there's Colress in ''[[VideoGame/PokemonBlackAndWhite2 Black and White 2]]'' and [[spoiler:Lysandre]] in ''[[VideoGame/PokemonXAndY X and Y]]''.
* In the first two ''Franchise/ProfessorLayton'' games, the antagonist Don Paolo disguises himself as other people. He's disguised as [[spoiler:Inspector Chelmey]] in ''The Curious Village'' and as [[spoiler:Flora]] in ''The Diabolical Box'', though the real [[spoiler:Flora]] does appear earlier in the game. Jean Descole does the same thing in the prequels.
* The mysterious wizard who occasionally helps you out in ''VideoGame/FinalFantasyAdventure'' is eventually revealed as [[BigBad Julius]], who's been using you the entire time to get his hands on the girl and her Mana Pendant. {{Retcon}}ned out in the ''VideoGame/SwordOfMana'' remake.
* In her ''VideoGame/BlazBlueCalamityTrigger'' story mode, Noel is accompanied by a mild-mannered pacifist intelligence officer named "Hazama." [[LateArrivalSpoiler If you've seen trailers for ''Continuum Shift'']], you'll recognize him as Terumi, the one [[HiddenVillain behind the events of ''Calamity Trigger'']]. What did he want from Noel? To MindRape her to take Nu-13's place as a living weapon of mass destruction.
* [[PlayingWithATrope Played with]] in ''VideoGame/KnightsOfTheOldRepublic'', when it turns out that [[spoiler:[[TomatoInTheMirror YOU, THE PLAYER are]] Darth Revan, former BigBad of the setting, bud didn't know it thanks to LaserGuidedAmnesia from the [[AWizardDidIt Jedi Council]], leading to an [[InvertedTrope Inverse]] of CriminalAmnesiac if you decide to return to TheDarkSide]].
* Maria in ''VideoGame/SilentHill2''. To add insult to injury, you spend a lot of her "good guy" time trying to keep her alive.
* In ''VideoGame/PaladinsQuest'', the student who goes with you to the forbidden tower on the academy grounds and goads you into accidentally freeing Dal Gren at the very beginning of the game is revealed at the end of it to be the BigBad EvilOverlord Zaygos in disguise.
** Though it doesn't really matter in that case, since the student isn't anyone important. A much more shocking example is [[spoiler:Gabnid, legendary hero and founder of the WizardingSchool where the game started]].
* ''VideoGame/KingdomHearts'': Ansem, the researcher who was studying TheHeartless whose reports the player has been running all across the worlds to find. Turns out, he's the BigBad and TheManBehindTheMan. [[spoiler:And both directly and indirectly responsible for everything that's been going wrong in the worlds for the past ten years or so! In a subversion, it turns out that the guy we were calling "Ansem" was actually the Heartless of the guy who stole Ansem's name. The real Ansem is more of an AntiHero.]]
* In ''{{VideoGame/Bomberman}} 64'', [[spoiler: Sirius]] presents himself as Bomberman's ally and aids him in reaching Altair's fortress and battling its guardians only so that he could steal the Omni Cube from Altair and use its power to conquer the universe. When his plan succeeds, he thanks Bomberman by putting "Destroy Planet Bomber" first on his list of things to do.
%%* We also have [[spoiler:Marx]] from ''VideoGame/KirbySuperStar'' & ''Ultra''.
%%** [[spoiler:Magolor]] from KirbysReturnToDreamLand is another example.
* [[spoiler:The Soda Poppers]] from ''VideoGame/SamAndMaxFreelancePolice'' want revenge in season 2 of the game series.
* In ''{{VideoGame/OFF}}'', [[spoiler:The Batter]] intended to destroy the world all along.
* [[spoiler:[=LeChuck=]]] in ''VideoGame/TalesOfMonkeyIsland''. [[spoiler:From the moment that Guybrush Threepwood inadvertently [[HumanityEnsues turns him into a human]] who acts like a HarmlessVillain and helps out on Guybrush and Elaine from Chapter 2 up to Chapter 4 (all the while wearing his [[{{Glamour}} charming]] [[InstantAllegianceArtifact belt buckle]]), then [[InTheBack kills Guybrush in a clever ambush]] as soon as our hero cures everyone of the [[HatePlague Pox of [=LeChuck=]]]; Elaine sees that "with or without all that voodoo, [[=LeChuck=] is] still nothing but an evil sack of scumm".]]
* In the alternate timeline of ''VideoGame/DeadRising2: Off the Record'', it's revealed that [[spoiler:Stacey]] was the BigBad all along. As soon as the reveal occurs [[spoiler:her personality jumps straight from GirlNextDoor to cruel and sadistic [[TheBaroness Baroness]]]].
* ''VideoGame/BatenKaitos''
** ''Eternal Wings and the Lost Ocean'' does a very unusual form of this. [[spoiler:You know Kalas, ''the main character?'' He's actually been working for TheManBehindTheMan this whole time.]]
** ''Origins'' does a more standard version: [[spoiler:Quaestor Verus is far worse than Lord Baelheit could ever be...]]
* The ''VideoGame/AssassinsCreedII'' "Lost Archives" DLC reveals that [[spoiler:Lucy had switched to the Templar's side before the first game's beginning. She even allowed Subject 16 to die from the bleeding effect when he discovered her betrayal. Everything she did throughout the games was a ploy she and Vidic devised to use Desmond to obtain the Apple of Eden. It would have worked too, [[SpannerInTheWorks if Juno hadn't programmed the Apple to force Desmond to kill Lucy.]] She's a particularly unusual example in that she gets killed before getting a chance to reveal her evil side.]]
** At the end of ''VideoGame/AssassinsCreedIII'', [[spoiler:Juno herself]] reveals her true nature. Even worse, Desmond has no choice but to do what she wants [[spoiler:since the alternative would be letting civilization be destroyed again and having the whole Assassin vs. Templar war repeat itself.]]
* In ''VideoGame/{{BioShock|1}}'', this is part of the main plot twist that occurs about 2/3rds of the way through the game. ([[spoiler: Turns out Atlas, your main ally and MissionControl, was criminal mastermind Frank Fontaine all along.]])
* Happens practically OncePerEpisode in the ''VideoGame/DeadSpace'' series. [[spoiler: Kendra in ''Dead Space'', Diana and Marker-Nicole in ''VideoGame/DeadSpace2'', Tyler in ''Dead Space Mobile'', and Colonel Bartlett in ''Dead Space 2: Severed'' are all revealed to be secretly evil bastards after spending a large amount of time as your primary ally[=/=]MissionControl.]]
* ''VideoGame/YsSeven'' plays around with a lot of JRPG tropes. One of the major plot twists is that the BigBad of the game is actually, of all people, [[spoiler: Tia, the flower girl who you meet early on and who seemingly takes the role of potential main love interest. Unlike, say [[VideoGame/LunarTheSilverStar Luna]] or {{Lufia}}, Tia was secretly evil from the start instead of being forced into a FaceHeelTurn midway through the game.]]
* In ''VideoGame/DeadIsland'', [[spoiler: Colonel Ryder White, the MissionControl that leads you through most of the game, turns out to be secretly evil (although this actually doesn't come as much of a surprise to most of the characters, due to their strong anti-authority attitude). He betrays your group near the end, steals the experimental cure for the zombie virus, and ends up being the final boss of the game.]] This is complicated even further in the single-player DLC where you actually play as Ryder White, and [[spoiler: it's revealed he was never the MissionControl at all, and it was really Kevin (another supposed ally) who was impersonating Ryder the whole time over the radio, and who manipulated Ryder and the original 4 heroes into fighting each other.]]
* In ''VideoGame/BookwormAdventures'', Professor Codex reveals that he was the cloaked individual that kidnapped Cassandra and that he sent you on the long quest because every enemy you defeat is placed under his control. Then you fight him.
* In the original ''VideoGame/{{Splatterhouse}}'' series, the third game revealed that the Terror Mask had ultimately planned to conquer Hell, and was using Rick to destroy those demons that were in its way. The entire series amounted to its BatmanGambit.
* [[spoiler: Jean-Francois]] from ''VideoGame/RhythmThiefAndTheEmperorsTreasure''. Made worse by him being [[spoiler: Marie's guardian in the first place, conspiring against her with Napoleon]].
* The Qbot from ''[[VideoGame/TheAdventuresOfMassmouth Massmouth 2]]''. When first encountered, he offers to be your guide on the strange planet you've crashed on. As it turns out, the oddly numerous accidents and threats that befall you on the way are not coincidental, as he was working for the BigBad the entire time and deliberately led you into danger.
* In ''VideoGame/AsurasWrath'', the true cause of most of the games events is revealed to be [[spoiler:The Golden Spider, AKA Chakravartin.]]
* [[spoiler: Captain Qwark]] is revealed to be TheDragon to Drek in the first ''[[{{VideoGame/RatchetAndClank}} Ratchet & Clank]]'' game. Of course, at the end of ''[[{{RatchetAndClankUpYourArsenal}} Up Your Arsenal]]'', he finally pulls an official HeelFaceTurn and remains that way since...ish. He's really into the whole "occasionally backstab your partner" thing to keep up his fans.
** In ''Up Your Arsenal'', there is [[{{EvilDiva}} Courtney]] [[{{TheDragon}} Gears]], who [[{{SixthRanger}} temporarily]] joins the Q-Force in their fight with [[{{BigBad}} Dr. Nefarious]]. She is revealed to be an antagonist after she [[{{FaceHeelTurn}} kidnaps Clank]] and [[{{MoralEventHorizon}} turns Skidd into a robot]].
** And in ''[[{{RatchetAndClankSizeMatters}} Size Matters]]'', who's canon status [[{{FanonDiscontinuity}} is disrupted]], there is [[spoiler: [[{{TheDragon}} Luna]]]]. It's later revealed that "she" was really [[spoiler: a puppet built to lure Ratchet into a trap]].
* ''VideoGame/{{Persona 4}}'' has two examples:
** Firstly, [[spoiler:Detective Adachi, the true culprit who murdered the first two victims, framed a [[{{JackTheRipoff}} copycat killer]] and was indirectly responsible for the rest of the incidents by manipulating [[{{UnwittingPawn}} Namatame]] into kidnapping potential victims and throwing them into the Midnight Channel.]]
** Secondly, the True Ending has [[spoiler: the gas station attendant from the very start of the game, who is actually the deity [[{{PhysicalGod}} Izanami]] and the mastermind behind the entire plot.]]
* ''VideoGame/CliveBarkersUndying'': [[spoiler:Jeremiah Covenant.]]
* In ''MurderedSoulSuspect'', Abigail is introduced as a possible friendly spirit that gives Ronan some tips on how to function in the spirit world. [[spoiler: She is actually the BigBad that is responsible for his death, and the deaths of all the teen girls in the game and throughout Salem's history. She possessed different police officers, including Ronan to carry out the murders in the game. Afterwards she killed them off. In the past, during the Salem witch trials, Abigail was one of the main people accusing others of being witches until she was caught lying and executed. Why? Because she has a personal vendetta against witches, even suspected ones. TheStinger? She's a [[BoomerangBigot witch herself]]]].
* Princess Of Lorule Hilda in ''Videogame/TheLegendofZeldaALinkBetweenWorlds'' sends Link to rescue the sevent sages of Hyrule who have been catured by their common ennemy the wizard Yuga. After Link save all of them and get the Triforce of Courage, Hilda reveals that she and Yuga have been working toghether to steal the triforce [[WellIntentionedExtremist in order to restore the fallen kingdom of Lorule to its former glory]] but doing so by dooming the kingdom of Hyrule. This is downplayed when Yuga betrays Hilda and reaveals that he never intended to save Lorule but rather remake the country in his own image bringing further destruction. After Link defeats Yuga, Ravio comes just in time to make Hilda realize her actions.
* ChildOfLight: [[spoiler:Norah]] turns out to be one of the BigBad's lackeys. This is really annoying because [[spoiler:she's]] one of your best tactical options experts, and you don't get [[spoiler:her]] back until after the final boss is defeated.
* ''VideoGame/DieReiseInsAll'' On of many characters from literature apperaing here is [[spoiler: ''Literature/SherlockHolmes'']]. While he appears as nice as usual at first, it's later reveald [[spoiler: that Holmes was always fake and only Moriatry in disguise]]. Counts also as ''AdaptationalVillainy''.

[[folder:Web Animation]]
* ''Machinima/RedVsBlue'':
** [[spoiler:Felix is revealed to be this after spending Season 11 and the first half of Season 12 pretending to be a good guy. When he betrays the others, he goes on an angry rant declaring that pretending to be a good guy and the heroes' friend was sickening, and now they will suffer and die for forcing him to go through that.]]
** [[spoiler:The Chairman, who had previously been something of a ReasonableAuthorityFigure and a good counterpart to the Director but with a ruthless streak and hints of some ulterior motive, is officially outed as this at the end of Season 12. As it turns out, he's Control, the one who wants to take over Chorus for its rich supply of lost alien technology, and hired Felix and Locus to manipulate the Civil War of Chorus until everyone is dead, so that he can reap the benefits of the planet once its clear.]]

[[folder:Web Original]]
* In ''Roleplay/TheGamersAlliance'', several seemingly heroic characters such as [[TheMole Cain]], [[LadyOfBlackMagic Desdemona]], [[TinTyrant Mordecai]] and [[FieryRedhead Vaetris]] end up having been evil all along during the Godslayer era.
* In ''Franchise/{{Noob}}'', both the webseries and novel have the Noob guild manage to hire a replacement for Arthéon after he has to start attending BoardingSchool. Too good to be true for a RagtagBunchOfMisfits that is dragging around the reputation of being the worst guild in a fictional {{MMORPG}}? [[TheMole Yes]].

[[folder:Western Animation]]
* In ''WesternAnimation/TotallySpies'', Terrance and Dean first seem like Dean was evil all along. Then Dean turned out to be good all along. The same goes for the episode in which Tim Scam was introduced. It also applies for a lot of "villains of the day".
* ''WesternAnimation/SpongebobSquarepants'':
** In ''New Leaf'', it appeared that Mr. Krabs and Plankton had finally reconciled and were friends again. Krabs trusts him so much now that he gives him the Krabby Patty formula...but then it turns out that Plankton was faking it all along, saying that he finally won. Yet Krabs revealed that he had outfoxed him first.
* In season 2 of ''WesternAnimation/WinxClub'', the new teacher appears to be an evil impostor in the end.
* ''WesternAnimation/AlphaTeensOnMachines'' has an interesting example of this trope. [[spoiler:In the first season, industrialist Mr. Lee seems to be the team's mentor. In the second season, TheReveal is that he's been a CorruptCorporateExecutive ''and'' a MadScientist all along. He uses [[LegoGenetics DNA samples]] from the Alpha Teens to create the Mu-Team, an evil, superpowered group of PsychoRangers.)]].
* In his first appearance on ''WesternAnimation/KimPossible'', Kim doesn't realize that Monkey Fist is a villain.
* In season 2 of ''WesternAnimation/{{Wakfu}}'', Qilby appears to be a friendly mentor to Yugo. He's actually an insane OmnicidalManiac scheming to claim the Eliacube so he can go back to draining entire worlds of their wakfu.
%%* [[spoiler:Pumyra]] from ''WesternAnimation/ThunderCats2011''.
%%* [[spoiler: General Pong Krell]] in ''WesternAnimation/StarWarsTheCloneWars''.
* Every villain from any episode of any ''Franchise/ScoobyDoo'' show, because there's always a mystery for our heroes to solve.
* ''WesternAnimation/SamuraiJack'' has this pulled with a mysterious female swordsman who teams up with Jack in an early episode. [[spoiler:Turns out she's Aku in disguise the whole time.]] The twist actually marks a rare TheBadGuyWins ending for the episode.
* Several of the characters encountered by the kids in ''WesternAnimation/DungeonsAndDragons'' turned out to be this, usually because they were Venger [[{{Glamour}} in disguise]]. (The very first episode had him posing as [[KingArthur Merlin]].)
* In ''[[WesternAnimation/UltimateSpiderman Ultimate Spider-Man]]'' [[spoiler: [[DeadPool Deadpool]]]] turns out to be this. (Or very least, Amoral All Along.) First introduced as a freelance hero who used to work for S.H.I.E.L.D.; he's later revealed to be a amoral mercenary who will work for the highest bidder.
%%* Penny from WesternAnimation/TheMightyB''
%%* The angry cop in ''WesternAnimation/TheGoodeFamily'' episode Gerold's Way or The Highway.
%%* Principal Pixiefrog and Neardy Crocodile from ''WesternAnimation/MyGymPartnersAMonkey''.
* ''WesternAnimation/TheLegendOfKorra'': [[spoiler:In season two, Varrick's true nature is revealed to be that of a CorruptCorporateExecutive, staging thefts of shipments in order to drive Future Industries into bankruptcy so he can buy a controlling interest and taking advantage of the Water Tribe Civil War to expand his business. Seasons three and four show he's basically an opportunist; while he hasn't gone quite so far as to instigate a war (as far as we know) he is doing ''something'' sinister that combines spirit vines with advanced Zaofu tech to the benefit of a conquering general]]
** It's also later revealed [[spoiler: that Korra's uncle was a member of the anti-authoritarian Red Lotus group who wanted to kidnap her as a child to brainwash her into their anarchist ways (kind of odd for a guy went out of his way to frame Korra's father out of his right to rule the Northern Water Tribe), but even they didn't plan on him fusing with the spirit of Chaos.]]
* Many episodes of ''WesternAnimation/{{Archer}}'' use this as a last minute reveal. In "Honey Pot," there wasn't even a strategic advantage to the villains pretending to be good guys; [[AffablyEvil they just genuinely liked Woodhouse and wanted to have some fun with him]].
-->'''Charles:''' Oh, we're a hit squad. Forgot to tell you.
* In the ''WesternAnimation/TheSimpsons'' episode "Brick Like Me", Homer retreats into a Lego-themed HappyPlace to escape his fear of Lisa leaving him behind. The Lego! Comic Book Guy seems like a HelpfulHallucination...until Homer decides it's time to face reality.
-->'''CBG:''' All you need to do is open the box back to your so-called reality. But I. Can't. Let. That. Happen. (''rotates his Lego head to a menacing expression'')\\
'''Homer:''' Huh? You're the ''bad'' guy? I thought you were the [[MrExposition rule-explainer-guy]]!