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->''"Now, I don't want to give anything away here, but '''one''' of these guys is going to be the villain. Can you guess who?"''
-->-- '''WebVideo/TheNostalgiaCritic''', ''WesternAnimation/QuestForCamelot'' review

A FaceHeelTurn or someone EvilAllAlong that was obviously coming.

This character is one of the good guys, but he has a certain air about him. You just know that he'll eventually betray the group in some way or another, even though the writer has shown no evidence that he plans to actually ''do'' evil (rather than just ''look'' evil). So why suspect him? He expresses traits that seem ObviouslyEvil; perhaps he speaks in a CreepyMonotone and wears an OminousOperaCape, or his name is "[[NamesToRunAwayFromReallyFast Mordred McTraitor]]", or he just looks like DastardlyWhiplash. When he finally turns evil, you say, "IKnewIt!"

This trope is an {{Audience Reaction|s}}, because the other protagonists suspect nothing. This trope can also happen in universe if a character predicts a betrayal, but doesn't warn the good guys. This trope can become TheUntwist, if the audience thinks (by mistake) that the character can't turn evil, because it would be too obvious. It can overlap with NarrowedItDownToTheGuyIRecognize, if one protagonist's actor usually plays evil characters.

''Do not add an example until the work reveals that the character turns evil.'' The audience might see an Obvious Judas where the author did not intend one. It would be stupid to list someone as an Obvious Judas, only to reach the end of the story and find that the character never became a Judas. Examples for characters, who aren't evil yet, belong in WildMassGuessing.

Also beware of hindsight: anyone can predict a FaceHeelTurn after it already happened. This trope only counts if the character seemed evil back when he or she was outwardly good. [[BiblicalBadGuy Judas Iscariot]] doesn't fit this trope in Literature/TheBible (though he did betray Jesus), but Judas might fit this trope in newer works that retell biblical events, and other characters might fit this trope if the audience sees an allusion to Judas.

Subtrope of CaptainObviousReveal. Related to DevilInPlainSight, though this requires that a character is deliberately portrayed as obviously untrustworthy and that another character picks up on this.

'''THERE ARE SPOILERS AHEAD...''' but considering what the trope is about, [[CaptainObviousReveal they're pretty obvious ones]].


[[folder: Anime and Manga ]]

* ''Manga/{{Bleach}}'': Many readers were suspicious of Aizen long before he was revealed as the BigBad due to the fact he was playing the stereotypical role of the too-nice character that's deeply concerned about a potential conspiracy, who confronts the apparent villain and gets killed off shortly afterwards. Aizen's reveal was therefore fully expected rather than surprising.
* Vegeta in the Majin Buu arc of ''Anime/DragonBallZ''. DoubleSubversion. Due to everyone knowing he's a giant {{Jerkass}}, and still pretty evil, and making more than his normal "evil" behavior during this specific time, he was expected to do this. The subversion is that it appears he was FORCED into his FaceHeelTurn, then the other comes from that he used a rather elaborate BatmanGambit to get Babadi to target him, thus making him a Judas in the sense of the trope.
* {{Defied}}: Hiei from ''Manga/YuYuHakusho''. Everyone except Yusuke believed that he would betray the group during the Saint Beasts arc, however this proved not to be the case once the demon tells the Saint Beasts to go to hell.
** Yusuke's trust had a ''weird'' effect on Hiei. Later, in the Chapter Black arc everyone is ''startled'' when Hiei goes 'stop the tunnel to Demon World? Screw that, I want to go home,' and ditches the rest of the team. He comes back and saves Yusuke's life less than a week later, though. And then he and Hiei beat the snot out of each other for a while, and then they're friends again. Even after the team splits up.
* Kai from ''Anime/{{Beyblade}}''. He barely tolerated his teammates, and gave off the impression that they were beneath him and his talent. The only thing that makes his teammates' shock at his betrayal remotely believable is that such a low, petty thing as stabbing them in the back in exchange for being ''given'' power seems strange coming from someone as openly confrontational, arrogant and self-reliant as Kai.
* Dennis Macfield of ''Anime/YugiohArcV.'' He pretty much pops out of nowhere and latches on to Yuya, seemingly fits into Yuya's group perfectly despite just meeting them, gives off a creepy vibe to Yuzu, and hides his ability to use Fusion for seemingly no reason. (Fusion used by the main antagonist group, Academia, though anybody on either side can use it if they learn how.) Surprise surprise, he actually works for Academia and was sent to capture Yuzu and/or infiltrate the good guys' team.
** This is also parodied when he and Gongenzaka have a duel in front of an audience. Dennis plays the Face and forces Gongenzaka to be the Heel. The audience believes Dennis despite his attitude, until Gongenzaka pointing out that Dennis's behavior is clearly indicative of the villain; afterwards, Dennis plays the Heel of the duel.
* Ren Gyokuen from ''Manga/MagiLabyrinthOfMagic''. Back in [[{{Utopia}} Alma Torran]], how could King Solomon have ''ever'' possibly foreseen [[http://mangafox.me/manga/magi_labyrinth_of_magic/v20/c193/17.html his betrayal]] [[http://mangafox.me/manga/magi_labyrinth_of_magic/vTBD/c215/17.html at her hands?]] [[spoiler:That's because the shady figure and the Magi with the creepy EmptyEyes we see in early flashbacks is not the traitor Gyokuen, but Solomon's wife Sheba. Gyokuen is actually Arba, the Magi with the winged staff, who always showed herself as Solomon's faithful follower and mother figure and didn't show her true colors until Solomon decided to become the new god of Alma Torran. Gyokuen has the same staff as Sheba because Arba stole it after killing Sheba.]]
* Sigurd from ''LightNovel/SwordArtOnline''. He pushes Leafa around, even outside the terms of their original agreement, and when Kirito intercedes on her behalf, [[DisproportionateRetribution Sigurd threatens to kill him]] while Kirito is unable to fight back due to being in an enemy city (in ALO, death doesn't kill the player, but since it has an apparently steep EXP penalty, this is quite a KickTheDog moment), [[PragmaticVillainy only stopping when his underlings point out that there are people watching]]. It's thus fairly obvious that he's the traitor to the Sylphs, although the twist is more about the existence of one, rather than the traitor's identity.


[[folder: Art ]]

* Paintings of the Last Supper depict Christ and all the Apostles with big shiny halos . . . except for one guy at the table.


[[folder: Comic Books ]]

* In his very first appearance ''ComicBook/XMen'' villain Fabian Cortez betrays all his allies, including Magneto and his ''own sister'', making him this in every appearance thereafter.
* No matter if a good guy or a bad guy, any comic that tries to treat [[ChronicBackstabbingDisorder Loki]]'s inevitable betrayal as a twist (for example ''Comicbook/AForce'') will inevitably fall into this category.
* In ''ComicBook/WhiteSand'', Drile's EstablishingCharacterMoment comes when he's trying to sell his skills for money and is subsequently demoted from top rank to the middle. When it turns out he's survived the massacre of the Sand Masters, it doesn't take a genius to figure out who was Kerztians' inside man.


[[folder: Fan Fiction ]]

* Trixie, in Fanfic/RainboomsAndRoyalty. She's a huge jerk to just about everyone except Dash, so it's little surprise when she starts actively trying to mess with the Ponyville ponies.
* The version of Judas Iscariot in the ''Fanfic/EmpathTheLuckiestSmurf'' story "Smurfed Behind: The Passion Of The Smurfs" is a little too obvious if he happens to be related somehow to the Smurfs' main enemy Gargamel.


[[folder: Films -- Animated ]]

* In the 1954 adaptation of ''WesternAnimation/AnimalFarm'', the design of Napoleon makes it far too evident that he is or will become the bad guy, especially if you compare him with the other pigs.
* Coverton from ''WesternAnimation/MonstersVsAliens'', being snobbish, scheming and working for Coverlord. [[{{Pun}} Hell, his own name shows that he is a villain!]]


[[folder: Films -- Live-Action ]]

* Harry Osborne from the ''Film/SpiderManTrilogy''. He was pretty much set up solely for the purpose of being Peter's Judas (starting with hitting on Mary Jane and starting to date her, the implication being that he wanted Peter to be jealous of him like he was jealous of his dad's affection for Peter).
* Magneto in ''Film/XMenFirstClass''. Conflicting views with Charles and his traumatic experiences at the hands of the Nazis makes it obvious even to those who don't know the entire X-Men story that he has a ''major'' chip on his shoulder [[HumansAreBastards towards humanity]] and will eventually betray Xavier. Although a good reason for this is that the movie is a prequel, making the split between himself and Charles a ForegoneConclusion.
* One review of ''Film/TheFellowshipOfTheRing'' mentioned "If I were Frodo, and Boromir had been this obvious about his intentions, I'd have been off on my own before the Fellowship reached Moria."
* Cypher in ''Film/TheMatrix'' has a shifty vibe from the beginning, solidified when he tells Neo, "Why oh why didn't I take the ''blue'' pill?"


[[folder: Literature ]]

* In ''Discworld/TheLastHero'' the character of "Evil" Harry Dread proudly wears this as his hat, and even reminds the party that he is evil and therefore contractually obliged to betray them at some point. The heroes accept this as part of the Heroic Code and even congratulate him on a job well done when he does betray them.
* The ''Literature/HarryPotter'' novels {{subvert|ed trope}} this trope. Severus Snape is Harry's least favorite teacher. ''Literature/HarryPotterAndTheGobletOfFire'' reveals that Snape is a former Death Eater. Other Death Eaters are returning to the evil Voldemort. The FaceHeelTurn happens in ''Literature/HarryPotterAndTheHalfBloodPrince'', when Snape murders Dumbledore. At this point, Snape is an Obvious Judas. The final reveal in ''Literature/HarryPotterAndTheDeathlyHallows'' shows that Snape was only a ReverseMole spying on Voldemort, and had given a MercyKill to Dumbledore who was SecretlyDying due to an unbreakable death curse on one of Voldemort's Horcruxes.
* ''Literature/ASongOfIceAndFire'':
** For the North [[spoiler: Roose Bolton. He's on the "good" side of the Starks, but comes from a long-time rival of House Stark that still brags about how they would flay their enemies alive, and even has the flayed man as their sigil, along with living in the [[IDontLikeTheSoundOfThatPlace Dreadfort]]. He's also constantly described as creepy, being very pale and having a quiet, whispered voice due to his frequent leechings (even holding a meeting while naked and being leeched), and has a number of weird habits]].
** The Freys have the reputation of being up-jumped, self-important and loyal only when it suits them. This reputation was galvanized when they obeyed their oath of loyalty to the Tullys during Robert's Rebellion only ''after'' it became clear that the Tullys were going to win anyway. Also, most of the Freys are described as very unattractive, many reassembling their weasel-like common ancestor, Lord Walder Frey. Also many of them are very unpleasant, from the abrupt and rude [[BastardBastard "Bastard" Walder Rivers]], the thuggish and fierce Hosteen Frey, the scheming [[EvilCripple "Lame" Lothar Frey]], and the brutal "Black" Walder Frey. The trope is confirmed when [[spoiler:Walder switches sides against the Tullys and Starks, and then has them slaughtered. Ironically, some of the nicer Freys, such as [[NiceGirl Roslin]], are described as being relatively attractive]].
** [[spoiler: Littlefinger]] plays with this by being ''so'' obviously up to no good that people write him off as either a SarcasticDevotee or a SmugSnake with a blatantly obvious (and thus easily foreseeable) case of ChronicBackstabbingDisorder, rather than a full-fledged MagnificentBastard who excels at inducing [[WrongGenreSavvy wrong genre savviness]] in those around him until precisely the right moment.


[[folder: Live Action Television ]]

* A strange sort of {{subversion}} in ''Series/{{Merlin}}''. That Mordred will one day kill Arthur is a ForegoneConclusion, one that Merlin learns about as early as the first series. By the time an adult Mordred reappears in the fifth series, Merlin is nearly beside himself with paranoia, certain that the young knight is playing some sort of long con to get in good with King Arthur before betraying him. As it turns out [[spoiler:Mordred is completely genuine in his loyalty and affection for Arthur and all his creepy behaviour and ominous looks are just incidental. His betrayal comes when Arthur has his [[ChildhoodFriendRomance Childhood Sweetheart]] executed for treason, thus leading Mordred on an arguably justified (to some degree) RoaringRampageOfRevenge]].
* PlayedForLaughs in the series finale of {{Series/Angel}}
-->'''Angel''': I know this is going to sound pretentious, but one of you is going to betray me tonight.
-->'''Spike''': [raises hand] Ooh! That's me!
-->'''Angel''': --Wesley.
-->'''Spike''': Aw. Can I at least deny you 3 times?


[[folder: Mythology & Religion ]]

* Judas Iscariot himself, as the Gospel of John mentioned that he was a thief and a hypocrite even before his betrayal (in one case, Mary the sister of Martha anointed Jesus' feet with expensive perfume, and Judas complained that they could've instead sold it and used the money to feed the poor, though since he regularly stole from the apostles' funds philanthropy probably wasn't his actual motive).


[[folder: Theatre ]]

* Music/JesusChristSuperstar: Judas, duh. The 2000 has him as the only follower that wears dark clothes or leather, and one of his first interactions with Jesus has him insult Magdalene for her...profession.
* In ''Theatre/TheBibleTheCompleteWordOfGodAbridged'', Judas himself is acted with an evil Creator/PeterLorre accent in the Last Supper sketch.


[[folder: Video Games ]]

* Kreia from ''VideoGame/KnightsOfTheOldRepublicIITheSithLords''. She comes across like a Sith Lord, [[spoiler:admits to ''having been one'']], constantly manipulates and ''mentally tortures'' your companions, and acts as arrogant and pompous as any of the Sith. Not to mention, her ([[AuthorAvatar and the writers']]) attempts at [[{{Deconstruction}} deconstructing]] the BlackAndWhiteMorality of the ''Star Wars'' universe almost always result in acting like a heartless bastard ([[BrokenAesop and Dark Side points]]).
* Kain from ''VideoGame/FinalFantasyIV''. He mentions that their orders dictate killing Rydia to LeaveNoSurvivors in the village of Mist (although when Cecil objects, Kain says he thought he'd say that, and goes along with it, which could imply he's playing Devil's Advocate), clearly shows jealousy of Cecil at some points, and he's a Dragoon (one of the DarkerAndEdgier classes within Franchise/FinalFantasy). When he actually ''does'' betray you, however, Golbez has applied MoreThanMindControl.
* Cait Sith from ''VideoGame/FinalFantasyVII''. He's a [[CatsAreMean talking cat]] with a superiority complex and an [[TheSidhe Irish accent]]. What part of that doesn't say "trouble"? [[spoiler: Then again, [[ManBehindTheMan the person controlling him]] is Shinra's TokenGoodTeammate, who eventually turns on them and joins AVALANCHE for real.]]
* Bishop and Qara from ''VideoGame/NeverwinterNights2''. One's a SocialDarwinist who practically screams "don't trust me!", and the other's a sociopath who hates being one-upped, which TheHero frequently will. Do the math yourself. Surprisingly, though, this can be somewhat subverted; while Bishop will always sell you out, he can be persuaded not to fight you if you're female, and while Qara will almost always betray you, there's a slim chance she won't.
** You can easily plan for maintaining Qara's loyalty if given the simple piece of info that [[spoiler:whoever is more loyal of Sand and Qara will stay with you and the other will betray you]]. If that's your thing.
* Orson in ''VideoGame/FireEmblemTheSacredStones'' is introduced to us after a scene where Tirado, right-hand man of SmugSnake Valter, mentions having a traitor in Prince Ephraim's force. He also spends large amounts of time away from the party and has a goatee. The numbers add up quickly against him.
* ''VideoGame/DragonAgeOrigins'' subverts this by how quickly the villains turn; so soon that their reveals doesn't get a chance to become a spoiler. If playing the Human Noble background first, Arl Howe might surprise you in the introduction, otherwise he's already obviously evil the first time he's seen. Loghain commits his betrayal and heads for coup at the end of the first Act, and the first time we see him his pale, cadaverous look screams ObviouslyEvil (although the "evil" part turns out to be a case of WellIntentionedExtremist who's overestimated his own capabilities).
** If you fail to gain enough loyalty Zevran will turn on you as soon as he's given a chance to return to his previous life with the slate wiped clean of his initial failure. This is after he's spent the game playing up how shallow, self-interested and jovially merciless he is.
* ''VideoGame/JeanneDArc'' has Gilles, a very pale, dark-eyed, and overall somewhat sinister-looking nobleman who joins Jeanne's cause. He's so polite and supportive of Jeanne that it feels like he must be up to something. And for anyone who knows their history, he's obviously Gilles de Rais, a compatriot of the real Joan of Arc who, some time after her death, was tried and convicted as a molester and serial killer of young children who had also attempted to summon a demon. By the way, the game involves a secret war against demons behind the real war between France and England... [[spoiler:Defied in the game as Gilles turns out to be perfectly heroic and loyal throughout. However, he does in the end become the [[SealedInsideAPersonShapedCan can in which the evil is sealed]] in hopes of smothering it to death under his heroic spirit, which could mean the demon got the better of him in the end]].
* ''VideoGame/BreathofFireDragonQuarter'': Bosch. He may be your best friend, but it's obvious, due to his smug, aristocratic manner and the the way his ego is tied to his D-Ratio, that he's going to betray Ryu the moment Ryu bonds with the most powerful dragon in the land, (thus proving that the all-important D-Ratio has nothing to do with the greatness of one's destiny.)
* ''Franchise/TalesSeries''
** ''VideoGame/TalesOfTheAbyss'': The first half of the game does a good job at hiding the potential mole in your party. It's during the second half, when suddenly all curtains are raised and an arrow points at Anise, including her utterly [[LargeHam exaggerated]] reactions to things or mysterious disappearances, along with the fact that her parents are in debt to the Order of Lorelei, so Mohs has leverage against her. According to some players, Anise being the mole felt like an AssPull.
** ''VideoGame/TalesOfXillia'': In the series in general, everyone expects one traitor per game, but Alvin [[spoiler: vin Svent]] takes this UpToEleven. Not only is he a very suspicious mercenary who very conveniently bails Jude and Milla out of getting arrested, he betrays the party ''constantly'' (not kidding, it was at least eight times). The party justifies keeping him around by saying he'd follow them anyways and at least this way they can keep an eye on him, but it's a surprise no one just kills him with all the trouble and grief he causes.
** ''VideoGame/TalesOfSymphonia'': After Kratos, who was a mercenary with suspiciously varied knowledge in all sorts of aspects of the world of Sylvarant (See where Alvin got it from?), betrays you, the player can easily tell the next one coming. It's no surprise when it turns out that [[ChivalrousPervert Zelos]] is the next traitor in the group. He disappears at times, has convenient excuses or explanations for things. His ObfuscatingStupidity didn't fool any player for every long, either.
** One of the factors to how obviously the Traitor character in any given Tales game will be portrayed comes down to Idealistic vs. Pragmatic spread among the party members; and ''VideoGame/TalesOfVesperia'' is no exception. Raven betrays the party once or twice before he even formally introduces himself to them. When he does join, he shamelessly does so by exploiting their need for information he has after they make it clear they don't trust him. While the revelation [[spoiler: of his true identity as Captain Schwann]] seems to catch everyone by surprise, only Karel and Rita seem genuinely surprised by his betrayal, whereas the more experienced Yuri and Judith seem to have anticipated his inevitable betrayal.
* Nuzleaf of ''VideoGame/PokemonSuperMysteryDungeon'' has gotten this reaction from quite an amount of players. He acts pleasant enough with the heroes, but the series has a tradition of making [[BitchInSheepsClothing the overtly nice ones]] EvilAllAlong. He also seems a little too interested in the player character's amnesia and Serenity Villages's high security area...
* Lysandre from ''VideoGame/PokemonXAndY'' has so many tip offs and ObviouslyEvil tropes stapled onto him. Between his intimidating character design, [[RedAndBlackAndEvilAllOver red (specifically Team Flare red) and black color scheme]], ominous {{Leitmotif}}, the tendency to go on {{Motive Rant}}s over the fate of the world, along with people being "filth", and ''the fact that his cafe is openly congregated by Team Flare members'', many players were surprised that Lysandre being Team Flare's leader was even a spoiler.
* The Aether Foundation, specifically Lusamine from ''VideoGame/PokemonSunAndMoon'' may be one of the straightest examples in the series to date, to the point where fans saw her being EvilAllAlong coming ''even before the games were officially released.'' In their debut trailer, the Aether Foundation appeared to be a group of [[MotherlyScientist Motherly Scientists]] dressed in [[GoldAndWhiteAreDivine gold and white]] who run a conservation group for Pokemon that were hurt by Team Skull. But of course, people quickly got LightIsNotGood and PureIsNotGood vibes from them when they saw that their "branch chiefs" and "employees" were basically grunts and admins in disguise (with one of them having a CheshireCatGrin and a SlouchOfVillainy, and the other being one letter away from being called "wicked"). Not to mention that the group as a whole is involved in "Pokemon research" (read: [[EvilutionaryBiologist unethical experimentation]]), and interested in the [[EldritchAbomination Eldritch Abominations]] known as Ultra Beasts, even going as far as to create a grotesque looking chimera Pokemon, Type:Null to combat them. Needless to say, [[IKnewIt nobody was shocked]] when Lusamine showed her true colours. Ironically the one whose name is a d short of wicked was actually legitimately nice and their villainy was at least partially the fault of the ultra beasts.
** This was also due to Team Skull, the ones advertised as the supposed actual villain team of the story, were a bunch of LargeHam goofballs mostly involved in petty crime who nobody took seriously. After the PlotLeveling of having the villainous teams becoming more and more dangerous to the point that the entire world was usually at stake by the end of the game, nobody thought that Team Skull were capable of pulling that kind of thing off and they correctly pegged them as decoys meant to hide the real villains.
* In ''VideoGame/WorldOfWarcraft'', during one Alliance quest in Spires of Arak, the traitor who was selling plans to the Horde turns out to be a drunk with a history of disciplinary problems, meaning he clearly wasn't even pretending to be a model soldier.
* In ''VideoGame/{{Persona 5}}'', you learn at the beginning that someone betrayed your character, but don't know who. It's fairly obvious that it's [[spoiler:Goro Akechi]], for a few reasons. The character, unlike the other party members, does not appear in the opening or have a character trailer. This person starts out on the opposing side of the heroes, and unlike Makoto, does not come around to their way of thinking. The character joins the group not long before the aforementioned betrayal, and also acts suspiciously at various points. If you make the right decisions, the other characters even say that they were suspicious of the traitor from the very beginning.


[[folder: Webcomics ]]

* [[http://chuckleaduck.com/comic/under-cover/ This]] Chuckle-A-Duck features Judas Iscariot himself as a DastardlyWhiplash.
* Eridan Ampora from ''{{Webcomic/Homestuck}}'' who was near-immediately established as a genocidal orphaner with a love of gunplay. Almost all of his darker traits were quickly overshadowed by his pathetic love life, though anyone who remembered his original introduction probably expected his turn to evil the instant his various romances were sunk.
* Subverted in ''Webcomic/DarthsAndDroids''. Jim, who is playing Qui-Gon Jinn, is convinced Sio Bibble is this since he has a goatee and is an advisor to the queen which means he must be an EvilChancellor. He wasn't.
* ''Webcomic/MegaManDissonance'': Readers have suspected that Dr. Hook might actually know more than she lets on and be behind everything. Come chapter 11, and lo and behold, she's involved with Requiem's plan.


[[folder: Web Original ]]

* When the term "pre-made psycho" or similar is used among ''Roleplay/SurvivalOfTheFittest'' handlers, it's generally a reference to this. It's used when a character is clearly going to play the game the second they get on the island just from a read-through of their profile. It often includes any mixture of [[TheSociopath sociopathy]], DarkAndTroubledPast, prior firearm or martial arts knowledge, mental instability, or [[ManipulativeBastard excellent manipulation skills]]. While more common in earlier versions, the staff nowadays tries to avert this by requesting profiles that have clear pre-made traits to be rewritten if not outright denied.
* Parodied in this [[https://twitter.com/prozdkp/status/811647093647482880 short animation]].


[[folder: Western Animation ]]

* ''WesternAnimation/SouthPark'':
** Cartman is the TokenEvilTeammate. Even in a reference to the last supper, Kyle believes someone will betray him. Cartman (who has already betrayed him) makes an outbursts that anyone that would betray Kyle is a loser. Through the rest of Kyle's speech, he is giving Cartman a DeathGlare.
** Also parodied in the Wal-Mart episode, where the boys are reluctant to bring Cartman with them on their trip to Wal-Mart because they know he's going to betray them. Cartman is even offended when they say they saw his betrayal coming, and claims that they're just lying. Kyle even says he saw him impeding their progress but Stan and Kenny don't care since Cartman is inept at betrayal so they don't have time to make sure he won't join them.
* Sinedd from ''WesternAnimation/GalactikFootball'', he was arrogant and very distant from the Snow Kids.
* Subverted in ''WesternAnimation/TheLegendOfKorra''. Asami is incredibly obviously secretly evil; her beauty, having paler, sharper features than the heroine and being more [[MakeupIsEvil traditionally feminine]], [[RichBitch wealth]], [[RedAndBlackAndEvilAllOver red and black clothing]], [[CleaningUpRomanticLooseEnds striking up a relationship with the guy Korra's interested in]], and being the [[MadScientistsBeautifulDaughter daughter]] of their enemy's EvilGenius accomplice all mark her as the person who turns out to be evil to the shock of the characters but not the audience. In fact she's nothing of the sort, and remains one of the most noble characters in the show. Apparently in the early stages the writers planned for her to be an Equalist spy, and when they changed their minds saw no reason to change her character design. [[spoiler: Even ''more'' subverted in the last season, where she becomes Korra's LoveInterest.]]
* Bismuth of ''WesternAnimation/StevenUniverse'' is introduced as an old war comrade and friend of Garnet and Pearl, but savvy fans suspected something amiss given that Bismuth had been bubbled and left in Lion's mane inaccessible to the rest of the team for an unknown reason, and she fits a little too perfectly with the crew [[StatusQuoIsGod in a show that prefers to focus on the original team]] (the reformed Homeworld Gems Peridot and Lapis Lazuli live separate from the Crystal Gems). [[spoiler: Ultimately downplayed in that she's revealed to be a WellIntentionedExtremist who's disagreements with Rose Quartz and eventually Steven over Bismuth's weapon that functionally results in the mass-murder of their enemies ended up becoming physical. With Steven leaving a better impression on Bismuth than Rose Quartz before her defeat, the door is open to Bismuth softening up and redeeming herself.]]
* A special mention goes to [[spoiler:Dr. Viktor]] from ''WesternAnimation/Ben10Omniverse'' for being a rare HeelFaceTurn example of the trope. In summary, [[spoiler:Viktor makes it no secret that he will eventually be the Judas in the midst of Zs'Skayr's henchmen. In ''The Vampire Strikes Back'', Zs'Skayr resurrects Lord Transyl, a member of a [[OurVampiresAreDifferent long-extinct species]] that once enslaved Viktor's people with the intention of ruling the universe together. Viktor voices '''obvious''' disapproval for the scheme, even going so far as to call it "madness," and yet at the very end where Zs'Skayr orders Viktor to hold onto Ben so that Transyl can take control over him, Zs'Skayr is ''still'' [[WhatAnIdiot legitimately shocked]] when Viktor drops Ben at the last second, proclaiming that the Vladats must never rule again.]]