History Main / BigBadFriend

* In the second ''WesternAnimation/{{Bionicle}}'' movie, Turaga Dume starts out as a trusted friend and city leader to both [[SacrificialLion Toa Lhikan]] and [[DudeWheresMyRespect Toa Vakama]], even if he DOES act a little strangely. Turns out he's the one who ordered the rest of Lhikan's team to be killed off years ago and for ex-Toa [[WhyDidItHaveToBeSnakes Nidhiki]] and [[DumbMuscle Krekka]] to capture him as well, even managing to capture and imprison half of Vakama's team in the Coliseum and generally causing mass chaos and destruction all around. And then it turns out that Dume is not Dume at all, but rather [[BigBad Makuta]] ''disguised'' as Dume, who has been in stasis for years. Even better, before this, Makuta was a trusted guardian of their home island, meaning there are ''two'' examples of this trope in one movie.
-->'''Nidhiki:''' This time, your farewell will be forever, brother.
-->'''Lhikan:''' You lost the right to call me brother long ago!

* ''Series/GameOfThrones'': Locke pretends to be a friend to Jon Snow starting from "Oathkeeper". He leads Jon to believe that he's just another recruit for the Night's Watch who bravely offered to accompany his party to track down and deal with the mutineers who killed Lord Commander Mormant and are tormenting the women at Craster's Keep. In reality, Locke is there to find and kill Bran and Rickon Stark, Jon's half-brothers, who immediately threaten the Boltons' claim on the North. He betrays Jon by preventing Jon from saving Bran and Rickon and may have planned to harm Jon himself -- but Bran manages to kill Locke before he can -- and Jon remains unaware of Locke's true intentions since Locke was killed before anything was revealed to him.

* In ''Series/BreakingBad'', Hank Schreider has been going after the elusive meth cook, Heisenberg, who's behind the manufacture of high-quality meth, arson, murder, and other atrocities. He does ''not'' take it well upon making the connection that the infamous Heisenberg is none other than [[spoiler:his own brother-in-law.]]

* ''Series/TheLordOfTheRingsTheRingsOfPower'': [[spoiler:Sauron stood in front of Galadriel]] the whole time as she confided in him about Finrod, and why she was hunting for him. In his defense, he asks Galadriel several times to stop and just let him be, and warned her that he is not the hero she sees in him. Galadriel even goes into denial and lists all the supposed good things she witnessed he did after learning that [[spoiler:the man she thought was her friend or even more than a friend, is Sauron himself.]]

* Qilby from "WesternAnimation/Wakfu" was seemingly close to his siblings especially his twin sister Shinonomé but his ability to memorize his past deaths and rebirths made life miserable for him to the point where he was desperate to leave his planet and explore the Krosmoz so much to the point where he started a war and stole the heart of a prince of another race, in his debut, he hid his treachery from his reincarnated brothers.

Qilby from “WesternAnimation/Wakfu” was seemingly close to his siblings especially his twin sister Shinonomé but his ability to memorize his past deaths and rebirths made life miserable for him to the point where he was desperate to leave his planet and explore the Krosmoz so much to the point where he started a war and stole the heart of a prince of another race, in his debut, he hid his treachery from his reincarnated brothers.

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* Qilby from “WesternAnimation/Wakfu” was seemingly close to his siblings especially his twin sister Shinonomé but his ability to memorize his past deaths and rebirths made life miserable for him to the point where he was desperate to leave his planet and explore the Krosmoz so much to the point where he started a war and stole the heart of a prince of another race, in his debut, he hid his treachery from his reincarnated brothers.

* ''Manga/{{Berserk}}'':
** As he made clear from early on, Griffith's strongest trait was his devotion to his dream. Guts grew to feel a bond with him and think of him as a friend only to realise too late that everything and everyone was a means to that, when Griffith eventually sacrificed his men to a horde of demons in order to turn himself into a demon-god.

* ''Manga/FairyTail'' has the [[TheDreaded Black Wizard Zeref]] as this to [[BigGood Mavis Vermillion]]. It was already confirmed in Chapter 340 of the manga that they knew each other (as fans had already suspected), but it wasn't until ''[[OriginStory Fairy Tail Zero]]'' began that we find out ''how'' they knew each other; Mavis recognized his [[InstantDeathRadius Ankhseram Black Magic]] and called it by name, and showed Zeref the first bit of [[ThrowTheDogABone genuine kindness]] he'd experienced in centuries, if not ''ever'', to the point where Zeref [[spoiler:agreed to teach Fairy Tail's founding members the magic they needed to defeat [[StarterVillain Blue Skull]], making him indirectly responsible for Fairy Tail's very existence as a magic guild]]. Zeref later called this his 'most precious memory.' Even in the present, Mavis still clearly feels bad for the guy, but acknowledges him as the [[OmnicidalManiac grave threat]] that he is. [[spoiler:Even more tragically, they fell in love with one another after they realized they were both immortal, but Zeref's Curse killed her [[KissOfDeath after their first and only kiss]]]], and it's ''heavily implied'' Zeref's current desire [[spoiler:to obtain Lumen Histoire, Mavis's body trapped in crystal, is motivated partially out of this love]].

** Played with, with TheMaster. In some of their incarnations, they see the Doctor as a close friend, and much of their machinations are to either prove to the Doctor that the Doctor's obsession with the comparatively primitive humans is silly, or to convince the Doctor to join them. In others, they are [[SubvertedTrope genuinely trying kill the Doctor]]. Exemplified by this little exchange:

* This describes Lex Luthor for the first four seasons or so of ''Series/{{Smallville}}'', and intermittently afterward. Notable in that this isn't presented as a twist, but as a continuing theme throughout the series -- he legitimately likes the protagonists, he just sees their demands that he stop digging up their secrets as a requirement to tell them he's stopped in the interest of courtesy (rather than a moral need to actually stop).

** ''VideoGame/{{Persona 5}}'': [[spoiler:Goro Akechi, one of the characters the Protagonist befriends over the course of the game, turns out to be TheHeavy for the bad guys, and the one ultimately responsible for the formation of TheConspiracy.]]