[[quoteright:350:[[Webcomic/ElGoonishShive http://static.tvtropes.org/pmwiki/pub/images/20100810_Exa2_5870.png]]]]

->'''Martha:''' I thought you were going to say he was your secret brother or something.[[note]]Martha's suggesting [[BigBad the Master]] is the Doctor's sibling. The idea was toyed with back in the 1970's as an unproduced story called "The Final Game", but a freak accident claimed the life of his first actor and the plot line where the Master was meant to die after confessing his identity as the Doctor's brother was scuttled. The idea was later brought up again in connection with the 1996 TV Movie, but nothing came of it there either.[[/note]]\\
'''The Doctor:''' ... You've been watching too much TV.
-->-- ''Series/DoctorWho'', "The Sound of Drums"

A fan gets Jossed when the elaborate EpilepticTrees or {{Fanfic}} that they've lovingly built upon canonical elements is abruptly disproved by further canon or WordOfGod. Named after Creator/JossWhedon; ''Series/BuffyTheVampireSlayer'' was notorious for this. Fans would come up with detailed and elaborate theories or plots during summer hiatuses, most of which got completely thrown out within three episodes of the new season.

May lead to FanonDiscontinuity when disgruntled fans prefer their own {{fanon}} over the canon. In [[TheyWastedAPerfectlyGoodPlot extreme]] [[FanDumb cases]], critics and fans may invoke DeathOfTheAuthor to preserve their interpretation of events.

Note that in some circles, the term "Jossed" refers to a [[AnyoneCanDie gutwrenching main character death]], which Whedon is also famous for. This definition entered the populace when during a Q&A session at an Australian university, a young Aussie girl noted his tendency to do horrible things to on-screen couples, and to much laughter, said "We call it getting 'Jossed'". Other sources also use this term as "shocking plot twist." This trope deals only with the "classic" definition.

This has two opposites: IKnewIt, where the fan theory is proven to be true by a twist that was planned all along, and AscendedFanon, where the author decides to promote some fanon elements to canon status. The inverse of this is ShrugOfGod, where the author refuses to say that one answer is more "correct" than another.



[[folder:Anime & Manga]]
* ''Manga/BlackJack'': Creator/OsamuTezuka did a second story about Kei/Megumi apparently solely to Joss speculation that she'd spontaneously turned into a man after her hysterectomy and loss of ovaries.
* ''Manga/{{Bleach}}'':
** There used to be a theory that Ichigo wasn't special until Rukia transferred her power to him. This was despite him having the power to see spirits since birth. However, the theory was jossed when the Shattered Shaft training stating categorically that Ichigo had possessed shinigami power since birth that had been locked away until Rukia's power nudged it awake.
** Kubo Tite finally jossed a theory that was very popular with parts of the fandom who believed Ichigo looked like Kaien because he was Kaien's reincarnation. Parts of the fandom believed the theory was jossed when it was learned that Metastacia was consumed by Aaroniero and with it, Kaien's soul. However, Aaroniero actually consumed Kaien's spiritual body, not his soul. [[spoiler:The theory was actually jossed when it was revealed Ichigo is Kaien's cousin via his father who is Kaien's uncle, leading to an IKnewIt from other parts of the fandom that had never believed the reincarnation theory but had believed Ichigo was related to the Shiba family by blood. The fate of Kaien's actual soul is currently unknown.]]
** The theory that Isshin used to be a member of the Royal Guard has finally been jossed. [[spoiler:In another jossed and IKnewIt situation, the theory was that Isshin had been, at different times, both the former tenth division captain and an ex-member of the Royal Guard. He wasn't Royal Guard, but he was the former tenth division captain, and it turns out his family is responsible for the Royal Guard's ability to travel between the Royal Realm and Soul Society... so he wasn't a member, but his family was connected.]]
** An argument has existed within the fandom for years over whether Urahara placed the Hougyoku inside Rukia's body after Chapter 1 when he gave her the special gigai or Urahara placed the Hougyoku inside her years before the start of the story. [[spoiler:One of the databooks eventually reveals that Urahara placed it inside her after Chapter 1 when she's given the special gigai. This is another example of a reveal that is both a jossed and an IKnewIt example at the same time.]]
** During Turn Back the Pendulum's flashback arc, there was a theory in part of the fandom that Aizen was ultimately an AntiHero who teamed up with Urahara and the Vizards, especially after the existence of Maggot's Nest was introduced. Unsurprisingly, this theory was jossed when it was confirmed that Aizen was indeed the BigBad he'd always been.
* In ''Anime/CodeGeass'', the popular fan theory that [[spoiler:Lelouch faked his death at the end of the series]] has been Jossed in a few official materials released after the ending, as well as in interviews with the staff and cast members that seem to suggest he's [[spoiler:he's [[KilledOffForReal dead for real]]]]. The Official Guide Book mentions this 5 times, and the special edition DVD replaces the entire last scene (''which sparked the fan theory in the first place'') with a monologue by C.C that clearly indicates that [[spoiler: Lelouch is dead]]. However, some arguments are still ongoing as to how any or all of these elements should be interpreted, whether they are actually authoritative or just part of the [[spoiler:in-universe "official history" that might not match the possibly hidden truth of a plan already based on lies and deceit.]] Another example would be how a select few in the fandom continued to insist that Britannian Prince Clovis should rise from the dead. Or at least wind up alive after all as a Geass-possessing BigBad of some sort. Theories of Nunnally having either dark intentions or a split personality were also fairly popular in fan circles during the broadcast. But neither of these speculations came to pass.
* Depending on how much you value Word of God, ''Franchise/DragonBall Minus'' does this to a variety of fan theories and knowledge held for the better part of 20 years, plus completely changing the Bardock story as we know it (though it was [[AdaptationExpansion anime-only]] anyway).
* A great deal of ''Manga/FairyTail'' fanficcers liked (and still like) to claim that Natsu and the rest of the guild would begin to ignore Lucy for some reason when Lisanna was revealed to still be alive. 60+ chapters later, Natsu and Lucy's bond is stronger than ever, and he and Lisanna have said perhaps four or five sentences to each other. And Lisanna isn't jealous at all for this. In fact, the anime plays her up as a ShipperOnDeck for Natsu and Lucy. In another case, over half the theories as to what Natsu's relation to Zeref might be or what happened with the dragons all revolve around the idea that Natsu and possibly Gajeel are several hundred years old. The idea is based around the fact that neither of them could pass through a barrier that was supposed to only block those who were stone statues or over 80, so it looks like a pretty sound support. Except that the author came out and stated that the two of them ''aren't'' over 80. Unfortunately, since the majority of fans don't actually buy the official volumes, most don't read it, and still make guesses based around an already jossed theory.[[spoiler: They were born 400 years ago and sent to the future.]]
* Though many ''Manga/FullmetalAlchemist'' fans interpret Roy Mustang and Riza Hawkeye's relationship as romantic, in the post-show cast party omake, she directly thanks the show's creators for not making them a couple.
* It is frequently assumed by reviewers such as WebVideo/BennettTheSage that ''Anime/GraveOfTheFireflies'' is either a) an anti-war film, or b) a [[{{Glurge}} guilt trip]] aimed at the rebellious Japanese youth of the 1980s. According to director Isao Takahata, however, ''neither'' interpretation is correct. The actual message of the film is that we must be able to empathize with everyone even in the most trying times, and that failure to do so only results in tragedy. As a side note, it is worth mentioning that Takahata is not only a firebombing survivor himself but is also an outspoken critic of Japanese society's tendency towards rigid conformity, which makes the guilt trip interpretation especially ridiculous.
* ''Franchise/{{Gundam}}''
** When word came out about a [[Anime/MobileSuitZetaGundam Prototype Psycho Gundam]] MSV by mecha designer Kunio Okawara piloted by a boy named [[spoiler:Gil Ratockie, the younger brother of Miharu Ratokie from the original series, who had been turned into an Artificial Newtype and renamed Three Murasame]], it was generally assumed that the enigmatic Four Murasame was actually [[spoiler:their younger sister, Millie.]] Then the tie-in novel ''Four's Story: And to a Soldier...'' was published, thoroughly demolishing the theory as it reveals that [[spoiler:Four, whose real name is conspicuously absent, is a North-American girl who was orphaned in the ColonyDrop at the end of ''[[Anime/MobileSuitGundam0083StardustMemory Gundam 0083]]'' (which took place in the Mid-West of the USA) rather than during the One Year War like the Ratokie siblings.]] Furthermore, [[spoiler:while Millie ''was'' one of the test subjects in the early projects to convert normal humans in Artificial Newtypes]], it's also mentioned that [[spoiler:the poor girl didn't survive the process in itself.]] What's more, [[spoiler:Gil/Three, who is a major character in the novel, is presented as something of a love interest for Four.]]
** In ''Anime/GundamBuildFightersTry'', the protagonist Sekai uses a ''[[Anime/MobileFighterGGundam G Gundam]]''-style Gunpla called the Build Burning Gundam. When news first came out, many Western fans assumed it was a reference to the English dub, which had to {{Bowdlerize}} God Gundam's name to Burning Gundam to avoid offending Christian sensibilities. In an interview, the show's director explained that the naming was actually a coincidence; Burning was chosen because it fit the naming theme established in ''G'' and that he wasn't even aware of the English name change until after they started making ''Try''.
* ''Manga/{{Hellsing}}''. The true species of the Major ([[spoiler:he's a cyborg]]) was only introduced in the last chapters, and before that he was considered either a vampire or some weird magical human. And then of course in the aforementioned last chapters, [[spoiler:almost everybody died]].
* ''Manga/HunterXHunter'' has [[UnsettlingGenderReveal dropped a Bridget]] on many fans of both genders in the form of the Databook. First there was Kurapika, then Karuto, and then there was the whole business of Pitou's gender.
* When ''VideoGame/InazumaEleven'' was still running its original series, there was a rather well believed fan theory that the super-dimensional aspects to the soccer were actually just symbolic representations of what the moves seemed like, and that in actuality, there was no super dimensional aspect at all. Such as Fire Tornado not actually involving jumping into the air and forming a vortex of fire, and Majin the Hand not actually involving summoning a majin to stop the ball, but that this is just used to represent how powerful the moves appear to the characters. There was nothing that directly contradicted this theory in most of the original series, and there were a few things that seemed to support it. But then it gets completely killed with GO which introduces the aspect of keshin summoning, something that's obviously and blatantly super dimensional. Then Chrono Stone smashes it even further by having mixi-max; where you transport auras between people, as a very real thing. Not only that, but in the GO trilogy, there's a number of moments where hissatsus are used for things outside of just soccer, where it wouldn't make any sense if someone really was just using normal soccer moves.
* ''Manga/KatekyoHitmanReborn'':
** Goes to an extent too because there was Ryohei/Kyoko, Ryohei/Colonello, Ryohei/whoever the hell people liked pairing with him but Amano Jossed everyone by canoning [[spoiler:Ryohei/Hana]] but saying that'll probably end with a Ship War. Not that many people gave a crap about Ryohei anyway. Amano likes Jossing people a lot seeing as most of her plot points descend from random possibly LSD caused ideas.
** Tsuna's box animal was also up for debate for a long time until it was canon'd going against everyone's ideas.
** The 6 real funeral wreaths [[spoiler:did anyone honestly guess that Kikyo is the CLOUD guardian?]]
* The final ending of the NonSerialMovie version of ''Anime/MacrossFrontier'' left most of the fanbase believing (and a warning for fans of the show, this spoiler text is the ''Mother Of All Spoilers'' as far as you're concerned) [[spoiler:Alto was dead, Sheryl stayed in a coma, and they were basically TogetherInDeath. An interview with Kawamori Jossed this: Alto survived, Sheryl woke up, HappyEnding]].
* ''Manga/MermaidMelodyPichiPichiPitch'':
** Caren, Noel and Coco, upon their return in the middle of season two, will get their own plot arc and be important again.[[note]]Jossed by the first episode in which they reappear, in which it is blatantly pointed out that they can't defeat a member of the new QuirkyMinibossSquad to themselves, and have to go be comic relief. They do, however, get a brief shining moment in the manga.[[/note]]
** Lucia and Kaito will get a duet.[[note]]Became more and more likely when an extra song called "Birth of Love" was announced on the album. Then it was used in the show... as a new Seira song.[[/note]]
** The Great One is Michal.[[note]]Jossed by the episode with Rihito's concert.[[/note]]
* A popular theory in the ''Manga/NabariNoOu'' fandom was that the kitten Yukimi found and named Yoite was [[spoiler: Yoite's reincarnation]]. It was completely jossed in the final chapter when [[spoiler: Yoite shows up again]] and Yukimi goes out of his way to rename the cat "Yoi".
* ''Manga/{{Naruto}}'':
** The series Jossed a bunch of theories involving Akatsuki members [[BloodbathVillainOrigin Itachi]], [[BigBad Pain]], and [[TheFaceless Tobi]] when it turned out that [[spoiler:Itachi was a good guy, Pain's true identity is Nagato, and Tobi is both Obito Uchiha and Akatsuki's ''true'' leader]]. Chapter 474 finally Jossed the theory of [[spoiler:Danzo being Tobi]] by merit of [[spoiler:them facing off against each other]].
** A lot of theories about the bijuu were Jossed with the revelation that they were split from the Ten Tails by the Sage of the Six Paths, and again with the reveal that a bijuu will "die," but reform later if its host is killed. And [[spoiler:Naruto's mother Kushina being the previous Kyuubi jinchuuriki.]]
** A lot of fanfic writers assumed that Naruto's HealingFactor allowed him to regrow lost limbs. Chapter 699 shows that no, [[AnArmAndALeg that's not the case]].
** The "[[AllJustADream Genjutsu]] [[EpilepticTrees Theory]]", espoused mostly by [[DieForOurShip upset shipping fans]], which claims that the events of the final chapters and ''Anime/TheLastNarutoTheMovie'' are in reality [[SchrodingersButterfly taking place in the]] [[LotusEaterMachine Infinite Tsukiyomi]] dream world, of Hinata, to be more precise (since ''The Last'' is very Hinata-centric). Suffice to say, the fact that Hinata's dream featured a still-alive Neji, even though he ''died'' to save Naruto and Hinata in Chapter 614, and then everyone, including Hinata, woke up from their dream and attended Neji's funeral in Chapter 699, plus the subsequent releases of ''LightNovel/NarutoHiden'', ''Manga/{{Naruto Gaiden}}'', ''Anime/BorutoNarutoTheMovie'' and the sequel manga ''[[Manga/{{Boruto}} Boruto: Naruto Next Generations]]'', not to mention [[WordOfGod Kishimoto's own statements in several post-series interviews]]--statements that are heavily supported by the fact that ''The Last'' was confirmed '''with''' Kishimoto's approval and direct involvement ''two years'' before the manga ended--have disproved this theory to hell and back.
** Post-main series finale, there was the pervasive fan theory that [[spoiler: Sasuke's child, Sarada, was in reality Karin's daughter instead of Sakura's]]. ''Naruto Gaiden'' not only disproved this, but also gave it a rather [[TakeThatAudience large middle finger]].
* ''Anime/NeonGenesisEvangelion'', though the director Creator/HideakiAnno prefers a ShrugOfGod stance towards fan theories and outright asks the audience to find their own answers, the creative team behind the series has been known to occasionally speak out against a few of them.
** Most notably, Anno himself punctured the fan theory that claimed [[spoiler:Misato assassinated Kaji in episode 21]], clarifying that [[spoiler:the deed was done by a random {{Mook}} on behalf of either NERV or SEELE]]. The scene in the involved episode was even re-edited to remove the accidental implication.
** There was rampant speculation over which episodes of the series the third ''Anime/RebuildOfEvangelion'' film would adapt and what changes would be made. The movie then rendered most fan theories moot when it was revealed that [[spoiler:it took place after a 14 year TimeSkip and told a completely original story]].
** A theory that is common among ''Evangelion'' fans is that Shinji is intended as [[TakeThatAudience a mocking satire]] of [[ThisLoserIsYou the series' audience]]. According to character designer Yoshiyuki Sadamoto, Shinji is actually an AuthorAvatar for director Hideaki Anno, who at the time of Shinji's creation was suffering from many of the same issues as Shinji does.
** Elaborate theories of deliberate, complex Christian symbolism in Eva kind of fell apart after Assistant Director Kazuya Tsurumaki commented: ''"There are a lot of giant robot shows in Japan, and we did want our story to have a religious theme to help distinguish us. Because Christianity is an uncommon religion in Japan we thought it would be mysterious. None of the staff who worked on Eva are Christians. There is no actual Christian meaning to the show, we just thought the visual symbols of Christianity look cool. If we had known the show would get distributed in the US and Europe we might have rethought that choice."''
** When the manga adaptation did a bonus chapter, which included a cameo from the ''Rebuild'' character, Mari Makinami, several {{Epileptic Tree}}s immediately sprouted, but the manga's writer and artist, Yoshiyuki Sadamoto, would later clarify in [[https://wavemotioncannon.com/2017/02/21/the-current-status-of-gainax-interview-hiroyuki-yamaga-yoshiyuki-sadamoto-september-2016/ an interview]] that the bonus chapter was just something he did for fun and that it was not in any way canon to either the manga or the ''Rebuild'' series.
* ''Manga/OnePiece'': Boa Hancock being Luffy's mom was a pretty popular theory for a while, even though its only basis was that they sorta looked alike. It got Jossed when she fell in love with him, and it was later revealed that she's only 12 years older than him. This example is probably going to go down in history because of how ''obsessed'' the fandom was with this theory at one point. [[OldShame Pretty embarrassing for a lot of people in retrospect.]] Word of God has also soundly Jossed many theories surrounding [[IdenticalStranger Tashigi]], including her being blood related to Kuina or her being Kuina brought back to life. Their being twins was an especially popular fandom theory for years, which is why it hasn't quite died yet despite said WordOfGod and a side story that explicitly showed that Kuina was an only child.
* ''Anime/{{Pokemon}}'':
** The series has been particularly vulnerable to Jossing in the DP seasons: "Ash will get Buizel" (Dawn does, but [[LateArrivalSpoiler Ash does trade for it later]]), "Ash will get Hippopotas" (nobody does), "Ash will get Shieldon" (same), "Paul is a starting trainer" (he's been a trainer as long as Ash has).
** Probably one of the biggest Josses for the fandom was the episode that finally revealed once and for all that Pikachu is male, shooting down a lot of fans who assumed the opposite. Besides, Pikachu's tail never had an indentation, so it can be assumed it was male from the beginning.[[note]]Then again, Pikachu's gender differences was only introduced years later in ''VideoGame/PokemonDiamondAndPearl''.[[/note]]
** A ''BW'' episode officially confirmed that Pokémon in the anime can only learn 4 moves total (despite the fact that they are frequently shown to use more than four moves in a single battle).
* ''Franchise/PrettyCure''
** ''Anime/FutariWaPrettyCureSplashStar'': Some fans believed that [[Anime/FutariWaPrettyCure Nagisa and Honoka]] would mentor [[{{Expy}} Saki and Mai]], until the two series were cemented as strict alternate continuities. A much crackier theory posited that the girls would eventually fight '''EVIL BREAD''', due to the Hyuuga family's bakery job. Bread was one of the few inanimate objects [[MonsterOfTheAesop of any significance]] that were never turned into a monster during the series.
** ''Anime/YesPrettyCure5'': [[SchoolNewspaperNewshound Masuko Mika]] was thought to be a potential SixthRanger by the fanbase for a time, but never made it past comic relief, for the most part. The aforementioned slot ended up going to Milk come next series.
** ''Anime/FreshPrettyCure'': A good number of fans suspected Kaoru-chan, the girls' mysteriously savvy donut vendor friend of being the Kingdom of Sweet's Elder Tiramisu in human form, a theory that more or less went up in smoke around episode 29. Before that, parts of the fanbase insisted that [[DarkMagicalGirl Setsuna]], thought to be the unrevealed [[SixthRanger Cure Passion]] was either too obvious a candidate for the position, too [[EvilIsSexy awesome as a villain]], or both; hence, the Akarun was going to be granted to some new girl we'd never met around mid-season, tradition be damned. [[LateArrivalSpoiler It went to Setsuna.]]
** ''Anime/HeartcatchPrettyCure'': Tsukikage Yuri/Cure Moonlight was thought to be either dead, captured, or free but smacked with LaserGuidedAmnesia until episode 8, when she was shown to be alive and in full possession of her memories. The [[EvilCounterpart Dark Pretty Cure]] was also thought to be [[FaceHeelTurn Moonlight's former partner]], Cure Sunshine, until Moonlight was cemented as working alone and Sunshine turned up as a brand new Cure.
** ''Anime/SuitePrettyCure'': [[DarkMagicalGirl Siren]] was suspected to be [[MysteriousProtector Cure Muse]] by a good portion of the fandom. The fact that Siren defected from the villains' side and started showing some suspicious behavior right before Muse debuted appeared to clinch this... until both characters appeared in the same scene in episode 13.
** ''Anime/SmilePrettyCure'': Because there were seven gems on the [[TransformationTrinket Smile Compact]] and five Cures, fans guessed that two more heroines would be added during the series. However, no characters were even set up to become new Cures, and the team remains a fixed FiveManBand.
** ''Anime/DokiDokiPrettyCure'': There are five Royal Crystals, one for each Cure's color and an additional red one, leading to theories of a red SixthRanger Precure and that it's either Ai-chan (a baby fairy), Regina (one of the villains), or, somehow, Marie-Ange (who's missing AND comatose). The show itself hints very heavily at [[spoiler:Regina]], until the red Precure is revealed and it turns out it's [[spoiler:none of the aforementioned characters, but a new one called Aguri.]]
* ''LightNovel/{{Slayers}}'':
** In the end of the first NonSerialMovie, the ancestor of one of the heroes is able to get together with the elf girl he's in love with because of the TimeTravel plot Lina creates. However, the creator of the LightNovel series (and the entire franchise) spoke in an interview that the elf and the human ancestor, in the end, ''didn't'' wind up together because of the implications of a disturbing MayflyDecemberRomance... as in, because elves in this franchise age at half the speed that humans do, then the girl would still be considered a child while the human grows into manhood.
** Initially, [[JerkWithAHeartOfGold Zelgadiss]] speculates whether the priest Rezo is his grandfather ''or'' great-grandfather (as he's old to the point that Zelgadiss cannot clearly pinpoint how they're related) and Kanzaka confirmed that he's three generations removed in another interview. However, when the anime was first translated, a mishap caused the fandom to believe that Rezo was ''both'', leaving rumors of [[IncestIsRelative incest running amok in Zelgadiss' family.]] One wouldn't gain the contrary evidence unless they either found a translation of the interviews or read the first translated novel (which used the correct implication).
* The new {{OVA}}[[AlternateContinuity -verse]] ''Anime/TenchiMuyo'' installments Jossed many of the assumptions the fanbase had come to hold dear. For instance, that Tenchi's BumblingDad Nobuyuki was a {{Muggle|s}}, instead of being [[spoiler: in on the {{Masquerade}} with Katsuhito/Yosho]]. Fans tend to [[FanonDisContinuity ignore the new installment]], but usually ''not'' because of the Jossing.
* In ''Manga/TsubasaReservoirChronicle'', almost all the fans were ''certain'' that Syaoran was the same Syaoran as in ''Manga/CardcaptorSakura'', coming off as slightly reluctant to woo his obvious crush because he was already committed to her AlternateUniverse-equivalent. Turns out, [[spoiler:he isn't CCS Syaoran, but the son of an alternate universe version of CCS Syaoran, using his dad's name and abilities. [[Theatre/OedipusRex He's been romancing an alternate universe clone of his mom]], and was always ''known'' about it.]] Cue the AbandonShipping of a ''canon pairing'' by a decent chunk of the fanbase. This has actually been even further Jossed, in that [[spoiler:the theories spawned by finding out who his parents basically are were all wrong. The second Syaoran is actually the son of the clones reincarnated as opposed to the CCS couple, which has quite broken a lot of brains.]]
* In the ''Anime/YuGiOh5Ds'' fandom it was a popular theory that Z-ONE's true identity was [[spoiler:Yusei from the ruined future. Episode 148 even went on a big tease with showing Z-ONE having the same face as Yusei. But instead he turned out to be a random scientist in the future who had genetically modified his body to have Yusei's exact appearance, sans part of the head.]] Fans were not happy about this.

[[folder:Board Games]]
* Apparently there was some fanfic of the then-fictional board game "Escape from Zyzzlvaria" invented for a [[http://web.mit.edu/puzzle/www/02/round2/04/Puzzle.html 2002 MIT Mystery Hunt puzzle]], written when it was announced the board game would be [[{{Defictionalization}} defictionalized]] for the [[http://web.mit.edu/puzzle/www/09/ 2009 Hunt]]. When game character "Captain Blastoid" first appeared in the flesh, played by Jennifer Braun, the fic about a male Blastoid was suddenly a GenderFlip.
* Due to a certain [[HouseRules house rule]] becoming so prevalent that many people don't actually realize that it isn't an official rule, the instructions for most modern ''TabletopGame/{{Monopoly}}'' sets specify that nothing at all happens when you land on Free Parking.

[[folder:Comic Books]]
* There was some speculation that Creator/GrantMorrison's second volume of ''[[ComicBook/GrantMorrisonsBatman Batman, Incorporated]]'' would be ignoring the [[Comicbook/{{New 52}} DC reboot]], and that it would be the last book taking place in the "classic" DC Universe. This led to even wilder rumors that Morrison had threatened to walk away from DC if they forced him to "submit" to the new continuity. This was revealed to be complete nonsense when Morrison killed off [[ComicBook/{{Robin}} Damian Wayne]], an event that had massive repercussions throughout the reboot Batman titles (even acting like a bit of a BatFamilyCrossover).
* ''ComicBook/MyLittlePonyFiendshipIsMagic'':
** Issue #3 does away with the widely held belief that the Dazzlings [[ReallySevenHundredYearsOld had been living in the human world for the roughly 1000 years]] implied to have taken place between their banishment and the events of ''[[WesternAnimation/MyLittlePonyEquestriaGirlsRainbowRocks Rainbow Rocks]]''. It's shown they arrived around the present day (identical setting, they're in the clothes they were wearing at the start of the movie). While this issue has become CanonDiscontinuity, it's replacement neither confirms nor denies if this is still the case.
** A lot of fans, [[CrackFic some less serious than others]], speculated that Changelings are a fallen race of [[MythologyGag Flutter Ponies]]. Issue #5 shuts the book on this idea.
* A meta example: One of the early fan theories about ''ComicBook/TheNightGwenStacyDied'' was that its main purpose was to kill off the Green Goblin for good because the situation where he knew the secret of Spider-Man's identity was too dangerous to be allowed to continue. This, according to the theory, would have required a [[MoralEventHorizon crime so heinous]] that readers would accept Norman Osborn's death as permanent and would not clamour for his return. Then Harry Osborn became the new Green Goblin and it turned out he too had found out that Peter Parker was Spider-Man. And he was allowed to survive without being made to forget...
* When ''ComicBook/TheNewUniverse'' was introduced in 1986, many fans wrote in to speculate that this universe was the one created at the end of ''ComicBook/SecretWarsII''. [[WordOfGod Word of God]] insisted that this was not the case. Then fans began to speculate that the New Universe's "White Event" was a result of the burst of energy released at that time. Word of God denied this, and within a few issues the White Event was explained in continuity.

[[folder:Comic Strips]]
* A week of ''Brevity'' (starting [[http://www.gocomics.com/brevity/2010/09/27 here]]) focused on the life cycle of a couple. Readers following the sequence theorized that this is from the point of view of the tree in the background. However, [[http://www.gocomics.com/brevity/2010/10/03 the final strip revealed that the POV was actually from the benches the couple were sitting on throughout the sequence]].

[[folder:Films -- Live-Action]]
* ''Franchise/StarWars'':
** Prior to the release of the prequels, it was widely accepted by fans that the Clone Wars were fought by the Republic ''against'' an army or armies of clones (after all, wars are usually named according to who the victor fought ''against'', rather than by the nature of the victor's army), and that the Clone Wars happened well before the Empire formed. When the Essential Guides (compendiums of movie and EU knowledge) were revised and republished starting after the release of ''Episode II'', a lot of time was spent {{retcon}}ning the previous versions of the Guides, often with the excuse that in the wake of the Empire's rise, much information was lost or destroyed, and there were some rogue clones.
** Much of Boba Fett's EU history was tossed out in the Prequels as well. There is no mention of Mandalorians, and Fett winds up being a clone of his "father". Later EU sources show that Boba's father Jango was in fact a Mandalorian, and also that some of the erroneous information about Boba's past was actually from Jango's life. Other parts come from Boba using Jango's late mentor's name as an alias during his early life, and from a rogue Clone Trooper (who would of course look exactly like Boba under the helmet) being mistaken for him.
** Jedi family life. And then the movie implies celibacy, but Lucas Josses that again with a statement in [[AllThereInTheManual an interview]] that the Jedi have casual sex and only casual sex. There are also some Jedi that, due to the nature of their species, are allowed to have offspring, so long as they avoid personal attachment (such as Ki-Adi-Mundi).
** Even back in the days of the original trilogy, there was much fan speculation going around, which was then Jossed by the second and third movies. A somewhat infamous example of this happening to official media is the novel ''Literature/SplinterOfTheMindsEye'', which was published only a year after the first movie when the possibility of any film sequels was still uncertain. As a result, it has a number of things which may not directly contradict later movies, but at least they are pretty weird when you consider later plot developments. [[spoiler: Namely, the hints of a Luke/Leia romance when ''Return of the Jedi'' revealed they're siblings.]]
** In ''Franchise/StarWars'', the term "Star Destroyer" led to some fan speculation that because they are called Star Destroyers, that meant they were destroyer-class vessels, even though they have also been referred to as cruisers, battleships, and dreadnoughts as well, and Darth Vader referred to the Executor as his Star Destroyer in ESB. Eventually, in Starships of the Galaxy Saga Edition, there was a note in the Super Star Destroyer section establishing that Star Destroyer is not really a class of ship in the traditional sense so much as a design philosophy (lots of guns and a dagger shape to be able to point all those guns forward), and that Star Destroyer is meant to be capitalized as to distinguish it from star cruisers, star dreadnoughts, and actual destroyer-class vessels that happen to be starships.
** After ''Film/RevengeOfTheSith'' came out, a common theory (usually in refutation to the claim that it was a "plot hole" that the Jedi prophecy that Anakin would bring balance to the Force kind of went south on them) was that Anakin did "bring balance to the Force" by killing so many Jedi until there were only two left (Yoda and Obi-Wan) to match the only two Sith. In other words, the Jedi failed to notice that the Light Side was actually stronger than the Dark Side, so "bringing balance to the Force" would be a bad thing from their point of view. Lucas later clarified that, no, "bringing balance to the Force" really did mean killing all the Sith (because they were causing the imbalance in the Force), which Anakin did at the end of ''Film/ReturnOfTheJedi''.
** Back in the 'Zine days, Yoda's enigmatic "There is another" during ''Film/TheEmpireStrikesBack'' was widely interpreted as referencing Lando: this was partly due to the way the film was cut. His "superhuman" interpersonal abilities and cape also factored into the theories. The actual character was brought up a few times, but almost universally shot down. And of course, the popular Luke/Leia ship also got rather emphatically sunk in '83.
** In ''Film/TheForceAwakens'' Rey is shown to have been abandoned by her parents on the desert world of Jakku as a child. Since then she's been counting down the days since they left, and she spends much of the film hoping that she'll eventually reunite with them. In the lead up to ''Film/TheLastJedi'' fan theories exploded about who her parents could be. Almost ''everyone'' in Star Wars canon was considered at some point, from Luke or Han to secondary characters like [[WesternAnimation/StarWarsRebels Sabine Wren]] or [[VideoGame/StarWarsBattlefrontII2017 Del Meeko]]. In ''The Last Jedi'' it was revealed [[spoiler:in an epic MetaTwist that Rey's parents were nobody important, just random junk dealers who traded her for money.]] Needless to say 95% of fan theories out there were instantly debunked, although some desperate fans have defended sticking to their fanon by making up elaborate reasons why Kylo could have lied. [[note]] Fueling this is that Creator/RianJohnson has said that Disney doesn't have to stick to that explanation if they don't want to. [[/note]]
** Yet another notorious fan theory was that Snoke was actually Darth Plagieus. This theory remained popular for months after the film's release until story group member Pablo Hidalgo finally confirmed [[http://i.imgur.com/DgIx5Jq.png via Twitter]] that they are two separate characters, and that Darth Plagieus is dead. Like ''really'' dead.
** Before the prequels came out, it was almost universally accepted that Jedi Masters did not use lightsabers. Creator/RogerEbert even mentioned this on the episode of Ebert&Roeper where they reviewed ''Film/AttackOfTheClones''. Why did Obi-Wan carry one, then? Because he never claimed to be a Jedi Master in the original trilogy, only a Jedi Knight; this was another bit of fanon that was jossed.
* The promotional campaign leading up to the release of ''Film/{{Cloverfield}}'' was more or less ''intended'' to produce EpilepticTrees of all varieties, which it did. Fan speculation identified the monster, unseen in trailers, to be any number of previously established beings—[[Franchise/CthulhuMythos Cthulhu]], Franchise/{{Godzilla}}, Anime/{{Voltron}}, [[NinjaPirateZombieRobot Donkey Kong Jesus Riding on a Puff of Smoke]]—instead of what it actually was, [[spoiler: an immature sea creature that was awakened from dormancy from a falling satellite and became huge after exposure to a soft drink additive. This is not spelled out in the movie, but it's AllThereInTheManual.]] ''Prob''ably...
* It is likely that Creator/DavidLynch's [[ShrugOfGod reluctance to confirm or deny anything]] about the ambiguous aspects of his work is to avoid offending his fans in this way. He has also admitted that sometimes he simply films things that pop into his mind and seem interesting, and doesn't worry so much about explaining them.
* It was taken as gospel that the Audi 8 Decepticon in the ''Film/TransformersFilmSeries'' was a reformatted Barricade. However, he was later revealed as Sideways.
* ''Franchise/JamesBond'':
** For many years (and explicitly stated in the original, parody version of ''Film/CasinoRoyale1967'') there were fan theories that the name James Bond was a pseudonym used by the agent in question, and passed down to his successor upon the previous 007's death or retirement. This was conclusively disproven in ''Film/{{Skyfall}}'' when Bond [[spoiler: visits the graves of his parents, Andrew Bond and Monique Delacroix Bond, and is referred to by the family gamekeeper (who has known him all his life but doesn't know what he does for a living) as "James"]].
** A fan theory (not Jossed) hypothesizes that Robert Brown's M (the second M, after Bernard Lee and before Creator/JudiDench) is in fact a background admiral Brown had played in ''Film/TheSpyWhoLovedMe''. This doesn't explain the film series' tendency to [[YouLookFamiliar reuse other actors, however]]...
** Miss Moneypenny's first name was not stated in any of the novels or films, and a lot of fans took to "Jane" after the publication of Samantha Weinberg's ''The Moneypenny Diaries'', if for no other reason that it was the only option presented. ''{{Film/Skyfall}}'', however, establishes "Eve" as the first name of at least that film's Moneypenny.
* A popular [[Franchise/MarvelCinematicUniverse MCU]] theory was that the redheaded ComicBook/{{SHIELD}} agent Amanda Righetti portrayed in ''Film/{{Captain America|TheFirstAvenger}}'' was [[ComicBook/{{Agent 13}} Sharon Carter]]. This was shot down when it was announced that Emily [=VanCamp=] would be playing Carter in [[Film/CaptainAmericaTheWinterSoldier the sequel]].
* A common theory many fans had regarding ''Film/CaptainAmericaTheWinterSoldier'' was that [[spoiler: Alexander Pierce]] was actually the ComicBook/RedSkull in disguise with TheNthDoctor effect applied to explain Hugo Weaving's absence, as Weaving stated he wouldn't be return for any sequels. It also made sense as the Skull had pulled this type of trick more than once in the comics to cheat death, which also caused him to change appearances. However, while [[spoiler: Pierce]] did turn out to be EvilAllAlong, he was acting entirely on his own.
* ''Film/{{The Avengers|2012}}'':
** For a while, it was popular fanon that the "cellist" girlfriend Agent Coulson mentioned in the movie was [[ComicBook/ScarletWitch Wanda Maximoff]], apparently based on the misconception that Wanda was a cellist in the comics. This was revealed to be untrue when the ''actual'' cellist showed up in an episode of ''Series/AgentsOfSHIELD'', portrayed by Creator/AmyAcker.
** A number of people also thought that Loki's Scepter was created from or powered by the Tesseract, explaining their similarities. [[spoiler: In ''Film/AvengersAgeOfUltron'', the Scepter turns out to be the Mind Stone, while the Tesseract is revealed to be the Space Stone]].
* ''Film/AvengersAgeOfUltron'':
** When it was announced that there would be a "Big death" in the movie, a lot of people speculated that it would be Comicbook/WarMachine, since some see him as redundant when Iron Man is around. [[spoiler: It was actually ComicBook/{{Quicksilver}} who wound up dying]].
** The trailers showed a brief scene of a scantily clad woman dancing near Thor while he was being electrocuted. Her outfit, coupled with some unverified rumors, caused some to believe the woman was Mantis, another Avenger from the comics. In the actual film, the dancing woman is just a nameless extra who briefly appears as part of a hallucination. Mantis later wound up debuting in ''Film/GuardiansOfTheGalaxyVol2''.
** There was a dark-skinned bald woman seen in the trailers, and the fandom went wild guessing who she might be. Theories ranged from anyone to Hela, Black Panther's little sister Shuri, Death and even the above-mentioned Mantis. [[LadyNotAppearingInThisGame The mysterious woman was cut from the finished movie]], but it's been confirmed she was tied to the Norns from Norse mythology.
** Some speculated that Creator/AndySerkis' mystery role was going to be Professor Phineas Horton, the scientist who invented ComicBook/TheVision. He actually played Klaw, while Professor Horton was AdaptedOut of the Vision's origin entirely.
** When Claudia Kim was cast, theories abounded about who she was playing, with common guesses being Jocasta, ComicBook/TheWasp, Su Yin and Madame Hydra. She actually played Helen Cho, [[AscendedExtra an extremely minor character]] in the comics.
* Thanks [[AllThereInTheManual the novelization]], it was believed by many that the new element Tony created in ''Film/IronMan2'' was Vibranium, a fictional metal that is very prominent in the ''ComicBook/BlackPanther'' books. Then ''Film/CaptainAmericaTheFirstAvenger'' came out the following year and established that Vibranium was already a preexisting material, and that Tony's father was already working with it back during UsefulNotes/WorldWarII.
* ''Film/{{Thor}}'':
** A ''very'' popular fan theory was that Loki had been {{Brainwashed}} by ComicBook/{{Thanos}} between the events of ''Thor'' and ''Film/{{The Avengers|2012}}'', explaining the alleged VillainDecay some felt he suffered from in the latter film. ''Film/ThorTheDarkWorld'' however [[spoiler: makes no mention of any sort of brainwashing, and Loki never once tries to justify his actions by claiming to have been a victim]].
** ''Film/ThorTheDarkWorld'' also Josses the popular fan assumption that [[Franchise/MarvelCinematicUniverse MCU]] Loki is a physical {{shapeshifter}}. In the movie, his shapeshifting is achieved with illusion. No, ''this'' Loki did not give birth to a horse.
** It was also a popular theory that the Aether from ''The Dark World'' was supposed to be the Power Stone, since it's red and strengthens whoever wields it. The actual Power Stone was later introduced in ''Film/GuardiansOfTheGalaxy'', where it was revealed to be ''purple'' in this continuity. It turns out the Aether is actually the Reality Stone instead.
* When ''Film/GuardiansOfTheGalaxyVol2'' was in the early pre-production stages, Creator/JamesGunn mentioned that he'd be introducing one of his favorite superheroes as a new member of the team. This caused a bunch of speculation that the new Guardian in question would be someone like Moondragon, Adam Warlock, [[ComicBook/MsMarvel Captain Marvel]], or even one of UsefulNotes/{{the Silver Age|of Comic Books}} Guardians like Starhawk or Vance Astro. In the end, it turned out to be Mantis, a character a lot of fans had overlooked. However, Starhawk is also in the movie, played by Creator/SylvesterStallone.
* When it was announced that Creator/WilliamHurt was reprising his role as General Ross for ''Film/CaptainAmericaCivilWar'', the rumor mill went into overtime with speculation that Ross would become the Comicbook/RedHulk in the movie. He didn't.
* Several fans have constantly repeated that most of the action in ''Film/AvengersInfinityWar'' would take place in space, and that Thanos would not have a fully-assembled Infinity Gauntlet in the movie. The latest trailers shows Thanos menacing both New York and Wakanda, and him with a fully-assembled Gauntlet.
* When the marketing for ''Film/JurassicWorld'' revealed the film's main villain to be a genetically engineered hybrid dinosaur called the Indominus rex, shown to be far smarter and more aggressive than the other, comparatively "purer" dinosaurs, fans began speculating that the creature's intelligence and violent behavior was due to having human DNA thrown into the mix. In reality, the intelligence comes from Velociraptor genes and the aggression comes from the fact that it was raised in isolation and thus has no idea what its place in the food chain is, causing it to needlessly kill everything it sees.
* The promotional materials for ''Film/{{Godzilla 2014}}'' drove fans ''nuts'' with an endless of stream of clues suggesting things that ended up not being true. Among the most prominent were the idea that the centipede/lizard thing in the initial teaser trailer was going to be one of Godzilla's enemies in the film (it was actually designed just for the teaser) or that Rodan was going to appear in the film (the flying monster in the later trailers is actually the male MUTO). A somewhat stranger theory was that Godzilla's iconic atomic breath was going to be left out of this version, due to it not being featured in any of the trailers (it turns out the filmmakers simply saved it for a dramatic reveal late in the film, so showing it in the ads would have been a huge spoiler of how the climax goes).
* ''Film/BatmanVSupermanDawnOfJustice'' has quite a bit of speculation before its release that would get debunked by the film.
** Rumors of Wonder Woman being of Kryptonian descent started with a fansite blog post merely speculating about her portrayal, which snowballed into something Zack Snyder and co. were allegedly actually doing. This was denied by all in the know and eventually debunked when word of her Amazon/demigod origin got out.
** There was rumor alongside what appeared to be a studio conference picture circulating around the internet saying that the film will be split into two, with the first part subtitled "Enter the Knight" and the second being "Dawn of Justice." But Creator/HenryCavill [[http://comicbook.com/2015/01/11/batman-v-superman-dawn-of-justice-will-not-be-split-into-two-mov/ reassures that ''Dawn of Justice'' is still one movie,]] which confirms that the picture is fake.
** A common rumor going into the release of the film would be that Scoot [=McNairy=] would be playing Jimmy Olsen. However, the release of the film has established that [=McNairy=] was playing a CanonForeigner named Wallace Keefe while Michael Cassidy plays Olsen in a minor role.
** It was commonly believed that Ray Fisher's cameo as Cyborg would just show him as regular Victor Stone. The film shows him becoming a cyborg.
** For a time, Creator/CallanMulvey's role was widely speculated to be Metallo. Instead, he's the [=KGBeast=].
** Because of the elements from ''ComicBook/BatmanTheDarkKnightReturns'', everyone assumed Bruce would become Batman again after retiring at some point in the past. In the film, there's no hint of him having ever retired.
** An early report speculated that Commissioner Gordon had already died in the DC Extended Universe before ''[=BvS=]''. Creator/JKSimmons being cast in the role for ''Film/JusticeLeague2017'' debunked this.
* ''Film/JusticeLeague2017'', in addition to confirming that the DCEU version of Commissioner Gordon is still alive...
** In June 2016, rumors of ''Justice League'' being subtitled either ''United'', ''Angels and Demons'', ''[[VideoGame/InjusticeGodsAmongUs Gods among Us]]'', or ''Gods among Men'' swiftly spread on various websites. Just hours later, Creator/GeoffJohns [[https://twitter.com/geoffjohns/status/738924011195793413 declared]] on Twitter that the title is just ''Justice League''.
** There was some confusion about ''Justice League Part Two'' being cancelled after this dropped the ''Part One'' subtitle, but later reports clarified that it isn't - both movies are going to be standalone stories instead of [[MovieMultipack one story in two parts]], as was widely assumed and reported. Producer Deborah Snyder (Zack's wife) later said the latter option was never actually planned in the first place, suggesting that the "Part 2" label was only there as a formality.
** It was consistently believed Darkseid would be the BigBad of the film, but it turns out he will instead be the GreaterScopeVillain to [[TheHeavy Steppenwolf]].
* Some watchers of Film/GetOut2017 believe that [[spoiler: Rose, and to a lesser extent, her brother]] were in fact UnwittingPawns of their parents, perhaps due to [[spoiler: her mom's hypnotic abilities.]] In an interview with Seth Myers on his talk show, Allison Williams said otherwise, saying that [[spoiler: Rose]] was not [[BrainwashedAndCrazy under any type of mind control or hypnosis or anything]] and [[EvilAllAlong was a willing participant]] in [[spoiler: her]] family's schemes.

* Many theories about ''Literature/HarryPotter'' have been repeatedly Jossed with the release of each successive book, with ''[[Literature/HarryPotterAndTheDeathlyHallows The Deathly Hallows]]'' Jossing the most.
** Numerous {{Fan Fic}}s featuring a female Blaise Zabini got [[GenderFlip Jossed]] when ''[[Literature/HarryPotterAndTheHalfBloodPrince The Half-Blood Prince]]'' was released.
** Likewise, Literature/HarryPotterAndTheDeathlyHallows reveals that Ginny's real full name is Ginevra, rather than Virginia.
** In the lead-up to ''Literature/HarryPotterAndTheDeathlyHallows'', a majority of the fans believed that Neville Longbottom would be the one to kill Voldemort's PsychoSupporter Bellatrix Lestrange after the fifth book revealed that she was the leader of the group of Death Eaters who had tortured Neville's parents into insanity. Instead, Bellatrix is killed by Molly Weasley after killing her son Fred during the FinalBattle while Neville gets to kill Voldemort's pet snake (and final [[SoulJar Horcrux]]) Nagini.
** ''After'' the release of ''[[Literature/HarryPotterAndTheDeathlyHallows Deathly Hallows]]'', a rapid succession of ship-related Jossings ensued when WordOfGod informed the eager fans that three of their beloved characters ended up with love interests who were not even introduced in the series. This earned a fan nickname of its own: "Getting Rolfed," named after Luna's husband who was introduced in this way.
** Also after ''[[Literature/HarryPotterAndTheDeathlyHallows Deathly Hallows]]'', Rowling even managed to Joss the fanfiction writers who speculated about Dumbledore, particularly his romantic feelings. Given the many bizarre ideas written about him, [[WordOfGay stunning the fan base with the news]] he was: 1) gay all along; and 2) smart enough to keep it in his pants and out of the ''Quibbler'' was actually the nicest way in the world to snap back at the ficcers. The large section of the fanbase who were convinced that Dumbledore wasn't really dead got Jossed, with Jo stating outright that the one thing magic absolutely 'cannot' do is bring people back from the dead.
** A persistent one was ''Literature/HarryPotter and the Green Flame Torch'', a [[MemeticMutation meme]] originating in a {{continuation}} {{fanfic}} on the Harry Potter Connection which spread across the internet. [[Quotes/{{Jossed}} J.K. Rowling herself memorably sporked the speculation]] but even today "Green Flame Torch" turns up 86 hits on Website/FanFictionDotNet.
** One of the most popular theories was Sirius being gay, due to his HoYay friendship with Lupin (and, according to the YaoiFangirl[=s=], the rest of Marauders). When he was proven as straight by ''Deathly Hallows''[[note]]The Trio found his room with Gryffindor banners and female Muggle pin-ups, and Sirius probably wouldn't have hid the fact that he liked men. Heck, he probably would've hid the girly pics and posted nothing but the men, just to screw with his conservative (by Wizarding standards) family.[[/note]], the fans immediately started claiming he might have been bisexual, despite their [[HypocriticalHumor previous insistence]] that he only liked men, just men, no [[NoBisexuals girls in the picture, really]].
** During the Three-Year Summer, one of the few facts known for sure about ''Literature/HarryPotterAndTheOrderOfThePhoenix'' was that Arabella Figg, Harry's apparently Muggle babysitter from the first book, would turn out to be more than she appeared. Naturally, fanfiction assumed that she would play a big part in the story, portraying her usually as a badass CoolOldLady who becomes the new Defense Against the Dark Arts teacher. Some fanfics even {{Hand Wave}}d her old age, making her a hot ActionGirl in a magical disguise. When ''Phoenix'' actually came out, it was revealed in the first two chapters that she was a MuggleBornOfMages whom Dumbledore had assigned to keep an eye on Harry. She had a very minor role in the book and was very different in personality from what fans had expected, being a {{Cloudcuckoolander}} MaidenAunt type. In any case, the fanon version of Arabella died a quick death after that.
* ''Literature/TheWheelOfTime'':
** The most popular theory was that the Forsaken Demandred was in disguise as Mazrim Taim, the false Dragon who knew how to test to see if a man could channel. There were also other hints that compared the two, but the whole thing was Jossed when Robert Jordan blankly stated that Mazrim Taim was not Demandred. Jordan was notorious for refusing to give straight answers, reputedly because he was amused by the rabid fan discussions on some of the more hotly debated topics. Even this WordOfGod came only after fairly extensive evidence against the Taimandred theory was published in Book 9 - it wasn't enough to convince some. The final book put the last nails in the coffin by having Demandred and Taim appear side-by-side in the same scene. Even so, every now and then a new reader will connect the dots and come up with the Taimandred theory on their own, prompting agonized groans from every WoT forum on the web.
** Once Sanderson took the reins after Jordan's AuthorExistenceFailure, he deliberately put an end to a number of various theories and mysteries that had been left hanging (see also, "who killed Asmodean", one of the things Jordan found too amusing to provide an answer for).
* In the ''Literature/{{Dragaera}}'' series, a popular fan theory was that Kragar was actually legendary assassin Mario Greymist, even though the author Steven Brust insisted something like "no one is anyone else" [[spoiler: which isn't actually true since Sethra Lavode and Kiera the Thief are one and the same]]. This was jossed in ''Dzur'' where Mario makes an appearance.
** In a more trivial example, a popular belief that pigs either didn't exist on Dragaera, or were [[CallARabbitASmeerp referred to as "kethna"]], got shot down in ''Athyra''.
* In the latter sense of the word, George R. R. Martin is particularly infamous in his "Literature/ASongOfIceAndFire" series for destroying any happy relationships and suddenly and without warning killing off random good/light-grey characters. There's a reason it's a poster child for the "AnyoneCanDie" trope. In the ''first'' sense of the term, he has explicitly shot down a theory regarding a minor character who appears in Bran's storyline ([[spoiler:Coldhands, who was believed to be some sort of zombified version of Benjen Stark]]). Notably, the [[Series/GameOfThrones TV show]] ignored this and made the theory canon, underlining the fact that, by the showrunners' own admission, they are writing their own GeckoEnding.
** In an example of inter-medium Jossing: fans were a little upset with the Red Wedding, and built a lot of theories around the fact that Robb's wife, Jeyne Westerling, who did not attend the festivities, could possibly be pregnant and/or a mole. GRRM is on record that, even if those things are true, "The Adventures Of Baby Stark" are not going to be a part of the song of ice and fire. The TV series enforced this by explicitly getting his wife [[CanonForeigner Talisa Maegyr]] pregnant and then having her be the first to die at the Red Wedding.
* OlderThanSteam: Between publication of Book I and Book II of ''Literature/DonQuixote'', several novels written by another author featuring the title character were published. In Book II, Cervantes specifically referred to the non-canonical books as being false, going so far as to have the characters in the novel read these alternate stories and deride them as ludicrous inaccuracies.
* After the early books in the ''Literature/{{Twilight}}'' series, many fans were asking about the idea of vampire babies, and Stephenie Meyer apparently Jossed this by saying that vampires couldn't get pregnant. Cue outraged claims of outright lies when ''Breaking Dawn'' came out and Edward gets Bella pregnant...at which point Meyer calmly points out that her ExactWords were that vampires couldn't ''get'' pregnant, and that she had never outright addressed the concept of a male vampire impregnating a human female, instead relying on the fans' own assumptions to keep that plot detail a secret until she was ready to reveal it -- turning this into an IKnewIt.
* Fans of ''Franchise/TheHitchhikersGuideToTheGalaxy'' tried to find hidden meaning in the fact that the Ultimate Answer to Life, The Universe and Everything was "42" while the Ultimate Question was "What do you get when you multiply six by nine?". Some observed that, in Base 13, 6 x 9 '''is''' 42. Adams famously responded "I don't write jokes in Base 13". In the same vein, attempts to assign deeper meaning to the number 42 in the first place were Jossed when he said he picked the number at random, decided it sounded good, and went with it. Stephen Fry stated, possibly jokingly, "Douglas told me in the strictest confidence exactly why 42. The answer is fascinating, extraordinary and, when you think hard about it, completely obvious. Nonetheless amazing for that. Remarkable really. But sadly I cannot share it with anyone and the secret must go with me to the grave. Pity, because it explains so much beyond the books. It really does explain the secret of life, the universe, and everything."
* According to a famous anecdote, Hungarian poet János Arany once came across the notes a teacher had written about his poems. After reading the phrase "The poet is trying to say..." for the umpteenth time, Arany succinctly wrote on the margin: "The hell I was." According to Creator/IsaacAsimov, when he was in school taking a course on modern literature, a man stood up at the back of the class and to the instructor loudly proclaimed: "That's not at all what was written!" When the teacher asked who the man was, he got the reply: "I'm the author," to which the instructor succinctly answered: [[DeathOfTheAuthor "Then your opinion is really irrelevant here."]] Asimov accepted this in good grace, though (inevitably for Asimov) he would use the incident in his short story "The Immortal Bard".
* During a radio discussion of the popular young children's book ''The Tiger Who Came To Tea'' the participants suggested their theories of what the tiger represented - the intrusion of danger into the comfortable world of childhood, that sort of thing. When [[WordOfGod the author]] came on she said no, it was just a silly story about a tiger.
* Many EU ''Franchise/StarTrek'' novels were Jossed by new movies and the ''[[Series/StarTrekEnterprise Enterprise]]'' series. One memorable example is ''Literature/StarTrekFederation'' by Judith and Garfield Reeves-Stevens, which was written mostly from the viewpoint of Zefram Cochrane, as well as Kirk and Picard. For one thing, he's much less of a jerk in this book than in ''[[Film/StarTrekFirstContact First Contact]]''. The book even included the origin of the Starfleet symbol (a sketch of a warp field by Cochrane). In the book, Cochrane's flight happens ''before'' WorldWarIII, which he waits out on Alpha Centauri, while Colonel Greene and his Nazi-like troops attempt to exterminate all non-Optimals. A well-written, emotional novel, casually brushed off in favor of something with the Borg. That origin for the Starfleet symbol was Jossed in the original series. At that time, each ship had its own symbol. That symbol of the Enterprise became applied to all of Starfleet because the Enterprise became by far the most eminent ship in the fleet.
* Creator/WilliamShatner's own novels dealing with the MirrorUniverse had the origin of the split Jossed by the "In the Mirror, Darkly" episode. This one actually followed the ''First Contact'' movie with Cochrane flipping a coin to decide on whether to tell the Vulcans about the Borg. In the Trek 'verse, he doesn't. In the Mirror Universe, he does. They believe him and form a more militaristic union to prepare. It goes downhill from there.
* This happens frequently in ''Literature/TheDresdenFiles'' fandom, either due to new books or WordOfGod, and is referred to as "[[Creator/JimButcher being Butchered]]."
* Creator/RayBradbury has said of ''Fahrenheit 451'' that, despite the interpretation of nearly everyone, ever, the novel is not about censorship, but the role of television in destroying interest in literature. He walked out of a class at UCLA where [[DeathOfTheAuthor the students insisted that the popular interpretation was correct]].
* Among the ''Literature/WarriorCats'' fandom, there was a popular theory that Pinestar was the father of [[TheHero Firestar]]. However, it was jossed on the author's Facebook. Although it doesn't stop people from coming up with the theory...
* In the final book of ''Literature/PercyJacksonAndTheOlympians'', a major plot point involves the titular character [[spoiler:obtaining the [[MadeOfIron Curse of Achilles]] which includes one vulnerable spot that [[DoesThisRemindYouOfAnything feels like a thousand volts of electricity arcing through his body when touched]]]]. Don't think for a second that shippers [[PowerPerversionPotential didn't pick up on]] and [[{{Rule34}} make good use of this]], all of which got thrown out the window in the sequel series, ''Literature/TheHeroesOfOlympus'', when Percy [[spoiler:promptly loses the Curse]] in the second chapter of the first book that he actually appears in.
* In 1893 Sir Arthur Conan Doyle killed off SherlockHolmes in ''The Final Problem'', and John Kendrick Bangs took this opportunity to write ''In Pursuit of the House-boat'' (1897), a fantasy novel in which which the detective goes to the afterlife and meets a bunch of famous historical figures. But this fanciful tale of Holmes' post-mortem adventures was rudely jossed when Conan Doyle revealed, in 1903, that the detective had never really gone over the waterfall after all.
* A fictional, OlderThanFeudalism example: In Lucian's ''Literature/TrueHistory'', the narrator gets to the Isles of the Blest, and meets, among others, Creator/{{Homer}}. Homer tells him that everyone's wrong about where he's from (he's actually Babylonian) and that all the lines bracketed as not really Homeric by scholars are, in fact, his. Then the narrator asks why he began the ''Literature/{{Iliad}}'' with the word ''menis'' [wrath]: "and he said it came to him that way, without his intending anything." All this was pretty clearly meant to make fun of the various theories held by scholars at the time.
* In the ''Literature/AlexRider'' series, many readers believed Alex to [[spoiler: have died]] at the end of ''Scorpia'', but there are four books following that. Also, author Creator/AnthonyHorowitz stated that [[TonightSomeoneDies a major character who had appeared in all the books so far would die]] in the final book ''Scorpia Rising''. Readers are led to believe that it's [[spoiler: Smithers]], when really it's [[spoiler: Alex's housekeeper Jack Starbright]] who dies.
* The last book of ''Literature/OrigamiYoda'' Jossed the fan theory that [[spoiler: Harvey likes Amy.]]
* Creator/DianeDuane began writing the ''Literature/{{Rihannsu}}'' novels during the ''Series/StarTrekTheOriginalSeries'' movie period, and a not inconsiderable amount of what she came up with for the Romulans was Jossed by the '90s and 2000s TV series.
** The ''Rihannsu'' version of the Earth-Romulan War has the Federation discovering the Romulans when the latter had only sublight vessels, albeit an extensive capability to that end. Based on prior bad experience with the AbusivePrecursors of the Orions that sparked the Sundering, the Romulans misinterpreted things and built a warfleet to attack the next Federation ship to visit the Romulan system. They captured it, gained warp drive and sundry other tech from it, and things went downhill from there until the Romulans were destroying entire fleets, at which point the Federation decided to cut its losses and negotiated a peace treaty by subspace radio, designating a swathe of space surrounding the Romulan sun Eisn as the "Romulan Star Empire".\\
The ''Enterprise'' episode "[[Recap/StarTrekEnterpriseS02E03Minefield Minefield]]" shows the Romulans as already possessing warp drive and cloaking devices at FirstContact with United Earth in the 2150s. While some of the ''Literature/StarTrekEnterpriseRelaunch'' novels (effectively ENT seasons 5 through 7, written partially using the notes of Manny Coto et al.) borrowed parts of Creator/DianeDuane's worldbuilding, the Earth-Romulan War instead took place before the Federation, and in fact was [[FireForgedFriends a catalyst for its creation]] out of an alliance of Alpha and Beta Quadrant races (chiefly humanity, the Andorians, the Vulcans, and the Tellarites) that joined forces to beat the Romulans.
** The Vulcans are stated in ''The Romulan Way'' to have joined the Federation during the Earth-Romulan War, and identified the Romulans as their long-lost brethren, whereas in ''Enterprise'' the Vulcans are a founding member of the Federation.
** The Remans, referred to as Havrannssu ("the Travelers") in ''The Romulan Way'', are said to be a frequently dissident faction or ethnicity of Romulans who were forced onto the Sundering's colony ships involuntarily, and Remus is a Class M garden world. In ''Film/StarTrekNemesis'', Remus is a barren planet {{tidally locked|Planet}} to Eisn, and the Remans are a different species entirely.
** The structure of the Romulan government is given as a series of aristocratic councils referred to as the Tricameron, with among other things twelve praetors ("''fvillham''") serving in a separate chamber from the Senate ("''deihuit''"). The TV series beginning with ''Series/StarTrekTheNextGeneration'' showed the Senate as a unicameral legislature, with a single praetor apparently equivalent to a prime minister.
* The ending of ''Literature/TheGiver'' led many school study groups to believe that [[spoiler:the story's final pages depict a DyingDream, since they have Jonas departing the world he grew up in and reaching "Elsewhere" after he and the reader find out exactly what being ReleasedToElsewhere means]]. This theory was finally disproved when the sequel was written.

[[folder:Live-Action TV]]
* ''Series/HowIMetYourMother''. In the episode "Legendaddy", it's revealed that Barney has a step-sister in college. Combined with the knowledge that The Mother was in college (at the end of season 4) and would meet Ted at Barney's wedding, it quickly became a popular and very plausible theory that The Mother was her. However, in ''Ring Up'', Ted actually does date her, but they break up since she was too young (only 20). This, in turn, led to an EpilepticTrees theory that she actually was The Mother, since at the time of the wedding she'd be 21. Which actually would give a rationale for why it took 9 years for Ted to meet her: at the start of season 1, ''she was only 12''.
* ''Series/DoctorWho'':
** Any idea that the modern series was a reboot (or that the film was considered discontinuity, making Creator/ChristopherEccleston the real ''Eighth'' Doctor, Creator/DavidTennant the ''Ninth'' and so on) was immediately thrown out once Sarah Jane Smith and K-9 appeared and Tennant's Doctor mentions regenerating "half a dozen times" in the same episode. In several episodes, starting with 2007's "Human Nature", Creator/PaulMcGann's Doctor's face explicitly appears on screen.
** ''Who'' fans eventually got to be used to being Jossed; the modern series in particular takes a perverse pleasure in contradicting {{Fanon}} without violating any actual {{Canon}}. The Doctor's references to his family in "The Empty Child", "The Doctor's Daughter", "Fear Her" and "Smith and Jones" have evoked particular Jossing. Even though his granddaughter Susan is introduced in ''the very first episode of the entire show'', many fans maintained that the Doctor was asexual in some way. In one of the AudioPlay/BigFinishDoctorWho audios, the Doctor clearly and unequivocally says that he has never been a father, but (a) that's not part of the TV show, (b) the Doctor lies pretty often and (c) the MST3KMantra is recommended with the sheer amount of writers the show has.
** The Doctor's "you've been watching too much TV" reaction in "The Sound of Drums" to Martha's suggestion that the Master could be his brother is a particularly self-aware example, because the fandom had been throwing that idea around for years (although if the TV movie had been picked up for a series, that WAS their plan).
%%** Also the plan for the original Ainley!Master before the actor died.
** Before ''The End of Time'', many fanfics were written to undo the FateWorseThanDeath forced upon Donna Noble. At the end of Part I it appeared as if she ''was'' beginning to remember her time with the Doctor, but this is resolved by the Doctor putting some sort of 'release-valve' in her mind to protect her, and she spends most of Part II unconscious. She never does remember ([[ShootTheShaggyDog and apparently there is absolutely nothing that can be done by anyone ever to help her]]), and now never will since it has been confirmed that her story is over and will never appear in the series again. In effect, everything she was is DeaderThanDead. Number of fanfics [=Jossed=]: Too many to number, and they are ''still being written''.
** The appearance of [[spoiler: Creator/JohnHurt as the Doctor's regeneration during the Time War]] led to many fans thinking that he was [[spoiler: an [[TimeshiftedActor older version]] of [=McGann's=] Eighth Doctor.]] This fan theory was thrown out the window in the short "Night of the Doctor [[spoiler: which brought back [=McGann=] as the Eighth Doctor and showed how he regenerated into the Doctor from the Time-War.]]
** There's also the theory that the Daleks can't climb stairs.
*** Jossed for the first time in "[[Recap/DoctorWhoS25E1RemembranceOfTheDaleks Remembrance of the Daleks]]", when we first see a Dalek flying up a flight of stairs.
*** Jossed ''again'' in "Dalek," when a guy climbs a flight of stairs and taunts his Dalek pursuer under the assumption that the Dalek can't get him. Then the Dalek says, "ELEVATE," and floats off the ground...
*** And originally Jossed back in 1965 in "[[Recap/DoctorWhoS2E8TheChase The Chase]]". We don't see Daleks in the act of climbing stairs, but we do see some upstairs from the spot where their time machine landed.
*** Creator/VerityLambert said the only reason Daleks weren't seen elevating in the very early days was because it was too expensive/difficult to do a convincing job on screen. After that it was more habit than anything (the levitating Dalek in "Remembrance of the Daleks" had to stay close to the wall because it was supported by three men on the other side lifting it on poles).
** The revelation that Ian and Barbara were still alive and apparently TheAgeless, in "Death of the Doctor" from ''Series/TheSarahJaneAdventures'', Jossed the very common grim darkfic fanon that gave Barbara the early death from breast cancer that claimed her actress Jacqueline Hill in real life, and ascribed it to her irradiation on Skaro in "[[Recap/DoctorWhoS1E2TheDaleks The Daleks]]".
** A longstanding opinion held by many fans is that the Doctor is asexual and incapable of romantic inclinations (in part based upon a line of dialogue in the 1979 story "[[Recap/DoctorWhoS17E2CityOfDeath City of Death]]" in which the Doctor refers to a woman as "probably" being beautiful, and the show itself (due to ExecutiveMeddling) eliminating all but the slightest hint of romance. Thoroughly shot down in the modern era as very Doctor to date has had a romantic connection with somebody (sometimes multiple somebodies), with the Doctor depicted as being in love with Rose Tyler, Clara Oswald and River Song - and marrying the latter.
* The creators of ''Series/{{Lost}}'' have specifically shot down the fan theory that the survivors of Oceanic Flight 815 are actually [[EveryoneIsJesusInPurgatory all dead and in a kind of purgatory]], despite the belief that this was the only explanation that actually made Season One make any kind of sense. Lingering hopes of this being true have been ''thoroughly'' Jossed as [[spoiler:the fourth and sixth seasons actually does allow several of the main characters to escape the island and return to the real world. Although in either a TakeThat or a ShoutOut, one of those returnees "now" holds the theory that he and the other "Oceanic 6" are in fact dead.]]
** Richard [[LampshadeHanging hangs a Lampshade]] on this in "Ab Aeterno", declaring that he, at least, considers the island to be Hell.
** As a lampshade hanging, in season 6, the ghost of [[spoiler: Michael]] reveals to Hurley that the island actually does serve as an instance of purgatory for people who have committed atrocious acts while on the island. The series finale reveals that [[spoiler: the AlternateTimeline Los Angeles where the plane didn't crash is really some kind of purgatory.]]
** After years of some of the most elaborate fan theories to grace modern television, The Island is... [[spoiler:just an island. For the most part, anyway.]]
* ''Series/StarTrekEnterprise''. Nearly every episode went against some bit of fanon, but careful examination reveals the writers never went against canon, with near Magnificent Bastard precision (with the exception of cloaking devices appearing much earlier than previously established). For example:
** Several well-known alien species encountered in ''[[Series/StarTrekEnterprise Enterprise]]'' had originally received first contact later in the chronology. The dialogue carefully avoided mentioning the species by name to keep canon intact.
** When T'Pol becomes an officer in Starfleet towards the end of the series, many fans cried foul claiming the original Star Trek series established that Spock was the first Vulcan to serve in Starfleet... Until some enterprising (heh) fans took time to watch the entire run of the original series on DVD only to confirm no such reference was ever made on screen, and since [[WordofGod Paramount and Gene Roddenberry]] proclaimed EU sources non-canon, any references to Spock being the first in the novels and other media don't count.
** The portrayal of Vulcans in general was perhaps the single biggest source of outrage: some fans took it extremely poorly that Vulcans were portrayed as arrogant, duplicitous, and generally not all that noble, despite the fact that the Vulcans previously seen in the original series, except for Spock and Sarek, showed these same traits. And even Spock and Sarek demonstrated an irrational years-long grudge. In particular, the fans who objected to the portrayal of Vulcans in this series apparently never watched, or had forgotten about, the TOS episode "Amok Time", in which T'Pau (one of the most eminent Vulcans, though her exact position is never stated; she's said to have been the only person ever to decline a seat on the Federation Council) makes statements about Terrans that could very easily be construed to be racist, and T'Pring hatches a plot with her lover Stonn to get Spock killed by challenging the marriage. Not very nice people by any reasonable standard. Spock himself states on several occasions that one reason Vulcans place so much of a premium on logic and strict emotional control is that their emotions and passions are far stronger and harsher than humans, and it's canon that Vulcan civilization was very nearly destroyed centuries ago in wars that were worse than anything Earth ever experienced, even World War III itself. And the objectors are ignoring the example of the Romulans, who are basically the descendants of Vulcans who refused to accept Sarek's philosophies and struck out to greener pastures offworld instead in order to preserve their original civilization, both the good and the bad.
** One particular example works off both definitions: [[spoiler:Trip's death in "These are the Voyages..."]] By that time there was already a novel written with Trip as an old man, meeting a young James Kirk, and mentoring the designer of the Constitution class starship. The event in question was also equally reviled by the fanbase, Trip being one of the most beloved characters in the series. While considered Non-Canon by all TPTB, the later ENT novels (''The Good that Men Do'' through ''The Romulan War: To Brave the Storm'') brought Trip back, turning his death into a {{Heroic Sacrifice}}, to work behind the scenes to sabotage the Romulan efforts to create a Warp 7 stardrive.
* ''Series/StarTrekTheNextGeneration'' did this as well:
** Between the end of the Original Series in 1969 and the airing of TNG in 1987, the only 'official' stories that came out were the four Star Trek movies. Because demand for Trek remained high, a good number of novels and [[http://en.wikipedia.org/wiki/Star_Trek_role-playing_game_%28FASA%29 RPG material]] were published, and assumed to be canon (or at least close to it,) by the fans. Apparently, Gene Roddenberry was frustrated that creative control had effectively been taken away from him (both in most of the films and the fiction,) and when he re-asserted creative control at the beginning of TNG, he deliberately ignored the corpus of work that had been done and took things in a different direction with TNG. The strange thing is that Roddenberry added The Animated Series to his non-canon list, even though he was involved in its production, it had all of the original cast except Chekov, shared story editors, screenwriters, and directors with the live-action series, and even has the same guest stars.
** Some fans had a theory that the episode ''Yesterday's Enterprise'' actually took place in the Mirror Universe, where Goatee!Spock had received knowledge of the Federation from Prime universe Kirk, and had reformed the Terran Empire into the Federation, complete with Federation ideals and history, and that the resulting war with the Klingons was due to the softening of the former Empire, which they would eventually lose, leading to the events in the Mirror Universe on Deep Space Nine.
* In ''Series/{{Heroes}}'', it was something of a no brainer ([[{{Pun}} so to speak]]) that Sylar [[BrainFood ate the brains of his victims]]. He makes frequent use of EvilTastesGood dialogue, and WordOfGod itself stated that he was originally supposed to eat the brains, but they couldn't figure out a way to show it on-screen without being silly. And yet brain-eating is explicitly Jossed in a very funny scene in the first episode of Season 3.
-->[[spoiler:'''Claire:''' Are you going to eat it?\\
'''Sylar:''' Eat your brain? Claire, that's disgusting!]]
* This occasionally happens in ''Franchise/PowerRangers''. The problem is that much of the info comes from casting scripts or pre-season profiles; this info has been repeatedly wrong and/or changed when the show begins airing since 2002, but the fans keep using it as source material for fic. Such is the case of the majority of the older fanbase (those aware of the Sentai source shows) assuming that ''Series/TensouSentaiGoseiger'' would be skipped over to adapt ''Series/KaizokuSentaiGokaiger'', only to be surprised with the announcement of ''Series/PowerRangersMegaforce'', which is a ''Goseiger'' adaptation. And then they really got hit in the face with the reveal that the second half of ''Megaforce'' would be a ''joint'' ''Goseiger'' and ''Gokaiger'' adaptation.
* ''Series/PowerRangersLightspeedRescue'' has an interesting on. Fans theorized that Commander Mitchell was, in fact, a grown up Billy, who used his knowledge of Ranger Tech to create his own team. The fact that his name is William Mitchell and the actor had a passing resemblance to David Yost also played into this. The theory was Jossed by producers and then firmly killed when Billy's official last name was revealed to be Cranston.
* ''{{Series/Smallville}}'':
** The theory that Chloe might change her name to become "Lois Lane" later in life was pretty thoroughly Jossed when the ''actual'' Lois Lane showed up in season 4 (and several times afterwards by WordOfGod).
** When Jor-El's voice began telling Clark that it was his destiny to rule the people of Earth with strength, fans believed either General Zod was Clark's biological father, or that Zod had somehow intercepted the ship and placed a message inside. This was jossed by the powers that be who assured fans that Jor-El was still Clark's father.
* In the 2003 remake of ''Series/{{Battlestar Galactica|2003}}'', one episode revealed that there was originally a number 7 Cylon named Daniel, but Cavil destroyed them all. The fanbase went wild with EpilepticTrees over this, saying that Daniel was Starbuck's father, Starbuck herself, any or all of the imaginary friends, the thirteenth lord of Kobol, etc. Then WordOfGod said that no, Daniel is not Starbuck's father, will not play any part in the finale, and was only created to explain why there was no number 7, while adding to Cavil's evil backstory to boot. Another one is what is going on with the apparently non-sensical numbering scheme for the models? There are supposed to be twelve all together, the unique five (who became known as the Final Five, despite existing before the seven) who came from the wreck of Earth and the seven they helped the machine Cylons create. Despite this, the models created with the machine Cylons are known to include Model One AND Model Nine.
* ''Series/BuffyTheVampireSlayer'':
** Directed by Creator/JossWhedon, this is the fandom reaction to the season 5 revelation that Drusilla sired Spike. Until this point, it was assumed that Angelus siring Spike was canon (what with Spike outright referring to Angel as his sire at least twice); suddenly almost all existing Fanged Four and Angel/Spike fics were 'Jossed'. The explanation is that "sire" can refer to any vampiric ancestor, not just the direct one. Angel sired Drusilla, so is Spike's sire - and did indeed have a mentor relationship with him, which isn't always the case.
** In season seven it looks like Faith slept with Spike. When Harmony introduces herself in the Season 9 comics however Faith offers these words:
--> "I love that '''I'm''' supposed to be the slutty one when everyone '''but''' me has nailed Spike."
* A popular fan theory about ''{{Series/Firefly}}'''s Shepherd Book was that he had spent time as an Operative. This has been Jossed by the Shepherd's Tale comic, which reveals that [[spoiler: he was at one point high-ranking Alliance commander, but was working as a spy for the Browncoats the whole time. Before that he was a streetkid named Henry Evans, who joined the Independent movement to get off his homeworld, stealing his identity from the ''real'' Book, whom he killed and impersonated to infiltrate the Alliance.]]
* The ''Series/{{Skins}}'' fan theory that Effy was going to be the character who died at the end of Series 4, her mental illness [[DrivenToSuicide Driving Her To Suicide]]. Instead, [[spoiler: it was Freddie]], in a plot twist so ridiculous it could have come straight out of the Whedon playbook.
* This occasionally happens with ''Series/{{NCIS}}''.
** In early seasons, it was a widely accepted theory that Tony's father was an abusive alcoholic, based on Tony saying that his father "was too drunk to hurt anyone" while undercover in a Season 2 episode. This was jossed by the appearance of Tony Sr. in Season 7, in which he was shown to be neglectful but very clearly not abusive or in any way violent.
** Quite a few fanfictions were jossed by the Season 10 episode "You Better Watch Out" when it was explicitly stated that Ziva had never been to Tony's apartment, nor any other woman for that matter. It is possible that this was intended to show the significance of her staying at his apartment two episodes later as a precaution after her father was assassinated.
** The theory of [=McGee=] having a dead mother was well on its way to becoming accepted fanon in seasons nine and ten, mostly because that seemed to be the trend on the show - Tony, Ziva, Gibbs, and Abby have all lost their mothers. The idea was jossed in the latter half of Season 10 when it is mentioned in an episode that this character's mother is very much alive and well.
* ''Series/{{Supernatural}}''. Throughout the entirety of Season 3, fans were convinced Sam and Dean would find a way to free Dean from his deal. They didn't.
** There are several examples of this in Supernatural, most often accompanied by a fan cry of 'I can't believe they actually went there!'. See Sam sleeping with Ruby and drinking her blood (both heavily debated, but many fans were convinced he Would Never) Sam breaking the final seal and defeating Lucifer, Dean not saying 'yes' to Michael, Sam saying 'yes' to Lucifer, and the list goes on.... Especially notable as Supernatural frequently managed to create some spectacular [[InternetBackdraft fandom explosions]] whenever they Jossed the fans.
** Throughout much of S5 many fans believed pagan gods might ally themselves with - or in some way offer assistance to - the Winchesters. This was Jossed not once, but ''twice'', first with Paris Hilton's self-obsessed forest god, and then with the council of pagan gods who determined the best way to avert the apocalypse would be to kill the Winchesters. On the other hand, fans were vindicated in believing the Trickster/Gabriel would become an ally, they just never quite guessed how it would work out.
* ''Series/LifeOnMars'': A very popular theory regarding the last episode, which was even embraced by John Simm himself, was that Sam never actually woke up from his coma, and his return to the "real world" was a hallucination, which is why he didn't feel anything there. This is however jossed by the first episode of ''Series/AshesToAshes'' which reveals that he did indeed wake up and committed suicide a few days later. Strangely enough, ''Series/AshesToAshes'' actually did this with Alex in the beginning of the third season, where her imagined awakening in the real world later turned out to actually be her dying.
* ''Series/MadMen'': Based on the title sequence, which shows Don Draper falling off a building, many fans thought that he would commit suicide at the end of the series. [[spoiler: He doesn't, and is in fact very happy at the end.]]
* ''Franchise/KamenRider'' shows will occasionally go out of their way to shoot down fan theories about secondary characters (usually female ones) becoming Riders, either by taking up the title character's belt or gaining their own powers. A specific instance comes in ''Series/KamenRiderDrive'', where the direct-to-DVD mini-episode ''Type Tokujou'' shows that [[ActionGirl Kiriko]] attempted to transform into Drive, only for the transformation to fail because she lacks some unspecified factor which [[TheHero Shinnosuke]] possesses.
* ''Series/TheWalkingDead'' had a moment in season 7 where Daryl blinks a lot while looking at Rick. Earlier in the episode a poster with the morse alphabet was shown, so fans theorised that Daryl was blinking in morse code, even translating the long and short blinks to "I, E, A, S, T.". That would then probably mean that Daryl tried to communicate that he was being held captive somewhere to the east. However, ''Main/WordOfGod'' Scott M. Gimple stated he wished the writers had been that clever and that the fans gave them too much credit.

* Music/JohnLennon repeatedly denied that [[Music/SgtPeppersLonelyHeartsClubBand "Lucy in the Sky with Diamonds"]] had anything to do with LSD, despite him having LSD experiences and writing [[Music/{{Revolver}} "She Said She Said"]] beforehand about a bad trip. According to Lennon, he was not aware of the LSD abbreviation at the time, had only heard the substance referred to as "acid," and was inspired by a painting that his son Julian made in school of his classmate Lucy O'Donnell. His son and Lucy also confirmed this answer. However, [[FanDislikedExplanation the explanation didn't deter his fans]], and Music/PaulMcCartney has refuted John's statements.
* Another drug related one: Peter Yarrow denied that his song "Puff the Magic Dragon" was about smoking marijuana, and that it "never had any meaning other than the obvious one": the "loss of innocence in children."
* Continuing on with the drug theme, many people believe Music/PinkFloyd's [[Music/TheWall "Comfortably Numb"]] is about heroin use. In reality, its about Roger Waters experiencing different illnesses and the feelings that come along with them. The second verse in particular is about when he had become sick with stomach cramps prior to performing (it later turned out to be hepatitis); a doctor gave him a shot of something, which made him numb. When asked about the line "That'll keep you going through the show" in particular, he said "That comes from a specific show at the Spectrum in UsefulNotes/{{Philadelphia}} (June 29, 1977). I had stomach cramps so bad that I thought I wasn't able to go on. A doctor backstage gave me a shot of something that I swear to God would have killed a fucking elephant. I did the whole show hardly able to raise my hand above my knee. He said it was a muscular relaxant. But it rendered me almost insensible. It was so bad that at the end of the show, the audience was baying for more. I couldn't do it. They did the encore about me."

* Creator/GeorgeBernardShaw was so sick of all the people who felt Eliza Doolittle and Professor Henry Higgins from ''Theatre/{{Pygmalion}}'' should've ended up together, that he wrote an entire essay on why Eliza and Henry could never be together; and in the original play she marries Freddy Eynsford-Hill. Nevertheless, in its film adaptation, and in the musical ''Theatre/MyFairLady'', (both the stage version and the film), ended with [[MaybeEverAfter Eliza and Henry possibly together]].

[[folder:Video Games]]
* The first ''Franchise/KingdomHearts'' game probably inspired many theories about Ansem that were invalidated by ''Kingdom Hearts II''. Theories about "Unknown" from ''Final Mix'' and the knights from the second game's secret ending were also invalidated.
** There was also quite a bit of speculation about Roxas, known only as the "Blond-Haired Kid", or BHK, after a few previews of ''Kingdom Hearts II'' were released. Many theories were in the correct vein, but as Roxas is linked to a group of people who were never mentioned at all in the first game, it was virtually impossible for anyone to guess his true identity. It got easier to pin "BHK" post-''Chain of Memories''. But then there was [=DiZ=]. The common theory was that he was the "Superior" of the Organization and Ansem's Nobody - because ''Chain of Memories'' heavily implied that Ansem's Nobody led the Organization and [=DiZ=] himself was Ansem (as King Mickey recognized him). The actual truth of the matter was something no-one could have predicted - [[spoiler: [[{{Retcon}} that the Ansem you fought in the first game wasn't the real Ansem King Mickey met.]]]]
** The fourth installment in the series, ''358/2 Days'', tossed a mysterious new Kairi lookalike into the events concurrent to ''Chain of Memories'' and preceding ''Kingdom Hearts II''. There were many theories that attempted to explain who she was and why she was never mentioned before, a fairly common one being she was Kairi's Unversed (Before the fandom really knew what an Unversed was) It turned out [[spoiler:that she was in fact a Replica infused with Sora's memories.]]
** A fairly minor one, it was the general fandom consensus that all Nobodies looked different, such as having a different hair color, and had a different voice than their "Other", like Roxas, Namine and Xemnas did. Then ''Birth by Sleep'' rolled around and we see the "Others" of Xigbar, Xaldin, Vexen, Lexeaus, Zexion, Saix, and Axel, and, while the latter three were kids at the time, they all looked and sounded exactly like their Nobodies. [[spoiler:It should be pointed out that Roxas, Namine and Xemnas aren't "typical" Nobodies.]]
* ''VideoGame/DevilMayCry'':
** ''4'' inspired a lot of fan-thought that Nero was Sparda or Vergil reincarnate, or that his Devil Bringer arm held either spirit, and would be possessed by them. [[spoiler:Unfortunately, neither showed up in the game.]] Also, Dante's seemingly uncharacteristic assassination of Order leader Sanctus at the game's start inspired much speculation about his motives and whether he had pulled a FaceHeelTurn. It was eventually revealed that [[spoiler:he was pulling a ShootTheDog and trying to kill the game's BigBad.]]
** As a point of interest: while not [[IKnewIt confirmed]], Nero's link to Vergil is still hinted at quite a lot in the game. He wields the Yamato katana -- Vergil's weapon in ''Devil May Cry 3'' -- and in [[SuperMode Devil Trigger form]], he is overshadowed by a demonic spirit that resembles Vergil's own Devil Trigger and his Nelo Angelo form from the first game. DemonicPossession[=/=]SoulJar isn't off the table just yet.
** The [[CrystalDragonJesus Crystal Dragon Pope]] explicitly stated that [[spoiler:Nero carries the blood of Sparda.]]
** There is an interview where a member of the staff said that Nero is actually the son of Vergil.
** Morihashi Bingo, the scenario designer for ''Devil May Cry 3'' and ''4'', wrote a novelization of ''Devil May Cry 4'' that states that the connection between Nero and Vergil is that [[spoiler:Nero is the son of Vergil and a human prostitute.]] Bingo added a number of scenes into the novel that clarified the relationship, claiming that the scenes were intended to be in the game but were cut from the final version for various reasons. The problem? Well, before Bingo wrote the novel he actually left Capcom to be a freelance writer. This means that despite the book being the originally intended story for the game, it hasn't been in any published material written by Capcom. Since it hasn't been confirmed or denied, Capcom could easily [[SchrodingersGun change their mind and have the plot go in a different direction.]]
* Prior to ''VideoGame/{{Halo 3}}'', ''Franchise/{{Halo}}'' fans began concocting elaborate theories regarding the Forerunners' relationship to humanity and the Flood, Cortana's "ulterior motives" and what the Prophet of Truth's motivations were for wiping out the Elites. [[spoiler:Turns out, the Forerunner simply encountered and fought the Flood, humans were merely the most favored out of countless species the Forerunner preserved in the Ark, Cortana was always on the good guys' side, and Truth, though he's revealed in the novels be at least somewhat aware that the Covenant's religion is a lie, was simply a self-aggrandizing zealot who felt the Elites were too unreliable to be kept alive.]]
** Then Literature/TheForerunnerSaga and ''VideoGame/{{Halo 4}}'' revealed all that to be only part of the story, with humanity, the Prophets, the Flood, and the Forerunners having a history going back hundreds of thousands of years. [[spoiler:A race literally called the Precursors created both humans and Forerunners; after they decided to favor the former and wipe out the latter, the Forerunners drove the Precursors out of the galaxy instead. In a plot for revenge against all of their creations, the surviving Precursors turned themselves into ''the Flood'', laying dormant until they were discovered by a joint Human-Prophet alliance. However, during the war between the two sides, humanity also wiped out several Forerunner worlds to sterilize any Flood they found there, then took the planets for their own to replace the worlds they lost. The Forerunners struck back by wiping out almost every human and Prophet, stranding the survivors on their homeworlds, and forcibly devolving humanity back to the Stone Age. Only then did the Flood, which had pretended to retreat from the Human-Prophet alliance, come back to nearly destroy all life in the galaxy. Additionally, it's revealed it was only the influential Forerunner Librarian and her followers who favored humanity, with the rest of her species viewing us as little better than animals. This all sounds like an AssPull, but it isn't. All the way back before the first ''Halo'' came out, supplementary materials on halo.xbox.com said that humanity found human populations on worlds that humanity had never, ever, ever been to. Though that tidbit seems to have been retconned away, the later ''Anime/HaloLegends'' and ''Literature/HaloEvolutions'' also foreshadowed later developments by mentioning that mysterious human-style ''architecture'' had been found on uninhabited worlds.]]
* After countless ''VideoGame/ChronoTrigger'' fanfics about the mystery behind [[UrbanLegendOfZelda Schala]], ''VideoGame/ChronoCross'' comes along with a conclusive answer, making many of them obsolete. Then the DS remake of ''Trigger'' Jossed even more fan theories with its added exclusive ending.
* After years of speculation surrounding the ''VideoGame/MegaMan'' series (namely, that [[VideoGame/MegaManX Zero]] went berserk and killed the original cast), Keiji Inafune casually dismissed the theory in a question and answer session, offhandedly stating that "it was not in Zero's character." Jossed. [[note]]Granted, Inafune's words made sense. True, Zero [[spoiler:was originally an AxCrazy destroyer of unparalleled magnitude]], but if he indeed killed the cast of the Classic series (''including'' his creator Dr. Wily), then comes the FridgeLogic of who would've been around to seal him away in the first place.[[/note]]
* A popular fan theory in the ''VideoGame/MegaManZero'' series was that the Dark Elf/Mother Elf was an incarnation of Iris, Zero's infamous [[ILetGwenStacyDie Gwen Stacy]] from ''X4'', based on Zero's comment at the end of ''Zero 2'' that he felt he might know her and the Mother Elf's mercy act of [[spoiler:transforming a dying Elpizo into a Cyber Elf]], suggesting she may have formerly been a Reploid. This was eventually dispelled in ''[[AllThereInTheManual Rockman Zero Official Complete Works]]'', which states that [[spoiler:the Mother Elf was created from [[TheVirus Maverick Virus]] data in Zero's body as a Sigma Antibody Program]], thus explaining Zero's sense of familiarity with her.
* ''Franchise/FinalFantasy'' in general has been Jossing a lot of fan theories and fanfics since Square Enix finally started making sequels and spin-offs set in the worlds of the individual games:
** The [[GainaxEnding ambiguous ending]] to ''VideoGame/FinalFantasyVII'', set 500 years into the future, deliberately refused to answer whether or not humanity had survived the clash between Meteor, Holy, and the Lifestream. Then along came the Compilation (some say [[FanNickname Complication]]) of ''Final Fantasy VII'', which continued the story only a few years after said event.
** ''VideoGame/CrisisCore'' Jossed everyone's fanfictions. Especially Zack/Cloud ones. Since turns out Cloud was not as emo as they wanted to believe. And Zack didn't meet him by saving him from bullies either... Angeal also served as a tool for Jossing too since... well... he was never even referred to until he showed up in ''CC'' thus everyone had to assume Zack randomly got the Buster Sword which... isn't true.
** The ''FFVII Ultimania'' Guides: where fanon goes to die.
** There are also [[VideoGame/FinalFantasyX2 the]] [[VideoGame/FinalFantasyIVTheAfterYears sequels]] to ''VideoGame/FinalFantasyX'' and ''VideoGame/FinalFantasyIV''. On an [[NoExportForYou equally annoying level]], there are also the Japanese-only ''Ultimania'' information books, which often contain details, histories, and character backstories that aren't even remotely hinted at in the games, some of which would look like outrageous EpilepticTrees if they had been fan theories.
** One cannot bring up ''VideoGame/FinalFantasyVIII'' without mention of the legendary "[[MyFutureSelfAndMe Rinoa = Ultimecia]]" theory. Even after the ''Ultimania'' guide explicitly noted that Rinoa did not somehow become the game's BigBad in the BadFuture (which admittedly doesn't rule out the possibility that Ultimecia's Sorceress Power descended ''from'' Rinoa over the years), you'll find many a fan still clinging to this theory with an iron grip.
* Pre-release materials for ''VideoGame/BanjoKazooie: Nuts & Bolts'' revealed the Lord of Games (L.O.G) and his role in the story, where he settles [[BigBad Grunty]] and Banjo's conflict with a contest. Some people didn't simply see L.O.G as a facilitator, and begin to speculate that Grunty might be a DiscOneFinalBoss, with L.O.G being the TrueFinalBoss plotting an EvilPlan against Banjo. Later, Rare opened Website/{{Facebook}} accounts for some of the game's characters for fans to post some questions to their walls for a limited time, with [[http://www.facebook.com/pages/LOG-Lord-of-Games/33513137116 L.O.G himself among them]]. This gave the Banjo theorists the chance to direct their accusations to L.O.G before the game is released. His response?
-->"What's all this talk of evil? I may be occasionally fallible and self-indulgent -- or so I'm told -- but I certainly wouldn't describe myself as evil."
* Despite heavy hints to the positive, the theory of the Wrecked Ship in ''Super VideoGame/{{Metroid}}'' and the Pirate Mothership in ''Metroid: Zero Mission'' being the same was Jossed by Zero Mission's director not long after people started espousing it.
* Any update Kevan applies to ''VideoGame/UrbanDead'' tends to fly in the face of every one of the regular's beliefs about the game.
* Creator/{{Nintendo}} seems to take an almost vindictive glee in contradicting the {{Fanon}} that was established for the ''Franchise/SuperMarioBros'' series during those long years when the plots of the games were strictly SaveThePrincess affairs.
** The ''very first'' Mario game with an actual plot (''VideoGame/YoshisIsland'') creates an origin story for the Mario Bros. that places their birth in the Mushroom Kingdom -- retconning ''Donkey Kong'', ''Mario Bros.'', and ''Super Mario Bros.'', which collectively state they were born in [[BigApplesauce Brooklyn]] and got to the Mushroom Kingdom [[DownTheDrain through a warp pipe]]. It also makes them twins, even though Mario was usually held as being the older brother by years rather than by minutes.
** Creator/ShigeruMiyamoto ''himself'' said that Mario's full name is not "Mario Mario"... [[FlipFlopOfGod but he later revealed that this is the case]].
** In an interview, Miyamoto disproved the common theory that the Koopalings are Bowser's kids (the current story is that the Koopalings are not Bowser's children, and Bowser has only one child, Bowser Jr.) This is despite that originally were Bowser's children in ''VideoGame/SuperMarioBros3'' (the Japanese manual has Bowser referring to them as "Ore-sama no musuko-tachi", meaning "my children", and Larry calls Bowser "Oyaji", a word for "father"). But after this, their family relationship with Bowser didn't get mentioned in later games, [[{{Retcon}} and they got referred to as his "minions" or "underlings" instead]] (and this included the manual for ''Super Mario Advance 4'', a GBA remake of ''Super Mario Bros. 3'') - in Japan. It lived on much longer in English-speaking countries as WordOfDante though the English translations, which were more likely to refer to them as "Bowser's children."
** Despite the cartridge cover of ''VideoGame/SuperMarioBros1'' implying that Mario was about to fall into a pit due to clashing against a wall, Miyamoto Jossed that outcome in [[https://www.youtube.com/watch?v=uu2DnTd3dEo a September 2015 video]]. In an inversion, he did confirm other beliefs and theories in that video.
* Many fans of ''VideoGame/HalfLife'' believed that the G-Man was in fact Black Mesa's administrator, which was a reasonable assumption in the interim before the sequel, but was Jossed when the Administrator, now named Wallace Breen, appeared as the principle antagonist of ''VideoGame/HalfLife2.'' The G-Man turned out to have an entirely separate backstory. The first game's official audio script does call him "Administrator," though, so the fans' interpretation was likely the original plan.
* ''VideoGame/{{Portal}}'' fans accepted ''VideoGame/PortalPrelude'', a third-party mod revolving around Aperture's backstory, as canon, until Valve laughed at their faces by proposing their own entirely new canon [[spoiler:(which happened to also contradict their own previously made canon, but that is an entirely different story)]].
* ''[[VideoGame/TheKingOfFighters The King of Fighters 2000]]''. With that tragic ending where Heidern laments a city being wiped off the map. Wait a minute... Southtown has been destroyed! What an incredibly bold move by Creator/{{SNK}}! The city that all but defined this tournament, gone, just like that! Wait a minute, are you sure it was Southtown? It had to be Southtown! Yes, it was Southtown! But they'd never... could they... yes! No! It's definitely Southtown, yes, 100% sure, no other possibility! Well, you can imagine the crushing disappointment when later games make it plainly obvious that Southtown wasn't destroyed. Even worse, we never find out which city it supposedly was and the incident is never mentioned again. Of course, you could've predicted this if you remembered that the freaking EDIT TEAM ending has ''never'' been canon in any ''KOF'', ever.
* ''[[VideoGame/ResidentEvil3Nemesis Resident Evil 3: Nemesis]]'' would count. After several novels from S.D. Perry, ''Nemesis'' seemed planned to contradict what she wrote as much as possible, including elements such as the games' timeline, the fate of Raccoon City, the canon endings of each game, and the name of several offscreen personages such as the city's mayor. Indeed, her edition of the story comes with an author's note stating the continuity errors between book and game. As it is, ''Nemesis'' is rather faithful to the source material.
* Sherry Birkin's reappearance in ''VideoGame/ResidentEvil6'' Jossed quite a few fan theories and planned stories about what was likely to have happened to her, since earlier sources indicated she was at least somewhat likely to end up in Wesker's care.
%%* Any ''Franchise/MetalGear'' game after ''VideoGame/MetalGearSolid'', take your pick.
* The WildCard ending of ''[[VideoGame/FalloutNewVegas Fallout: New Vegas]]'' brought about many theories of the Yes Man A.I. turning against the player due to a mention of finding an upgrade that lets him be more "Assertive". However, when asked about this lead developer J.E. Sawyer stated that the upgrade was meant to ensure that Yes Man is capable of formulating his own decisions while also only following the Courier's orders, preventing someone else from hijacking the Courier's seat of power. The fan theories of ''New Vegas'' in general are particularly prone to being Jossed, since Sawyer keeps an active Formspring account and readily answers most questions.
* ''Franchise/TheLegendOfZelda'':
** ''Hyrule Historia'', a book released in 2011 as part of the 25th anniversary of the series, debunked all timeline theories that placed the earlier 2D games (from the original ''VideoGame/TheLegendOfZelda'' to ''[[VideoGame/TheLegendOfZeldaLinksAwakening Link's Awakening]]'', plus the ''[[VideoGame/TheLegendOfZeldaOracleGames Oracle]]'' duology) either in the Adult Timeline or the Child Timeline of the series' overall chronology, instead placing them in a ''third'' timeline that, like the other two, has its roots in the ending of ''[[VideoGame/TheLegendOfZeldaOcarinaOfTime Ocarina of Time]]''. In a [[InvertedTrope reverse case]], the book also confirmed lots of other theories, as well as previously ambiguous or unconfirmed stuff.
** In ''[[VideoGame/TheLegendOfZeldaALinkToThePast A Link to the Past]]'' the last thing Link's Uncle says before he dies is "Zelda is your...". Many fans at the time speculated that he meant to say "Zelda is your sister" and that Link was secretly part of the royal family. As the series went on however it became increasing clear that this ''[[ImpliedLoveInterest wasn't]]'' the case. In the Game Boy Advance re-release of the game Link's Uncle's last words were changed to "Zelda is your destiny" to avoid any remaining confusion.
** Tingle, a ManChild who is obsessed with fairies and maps, is a very odd character. Many fans assumed Tingle was gay due to his fairy obsession and his big interest towards Link, who has clothes that remind Tingle of faeries (and he goes nutters in ''VideoGame/TheLegendOfZeldaMajorasMask'' when he sees Link has an actual fairy by his side). Zelda producer Eiji Aonuma went on the record to debunk the theories and outright said that Tingle is "not gay, just really weird".
** A common theory regarding ''Majora's Mask'' is that it takes place inside a dream Link is having (there are also varations of the theory suggesting it's a DyingDream). But [[http://www.zeldainformer.com/news/aonuma-debunks-majoras-mask-dream-theory Eiji Aonuma]] jossed it when he was asked about why the Ballad of the Wind Fish was in the game (its first appearance is in ''Link's Awakening'', which ''does'' take place inside a dream).
* ''VideoGame/MassEffect3'':
** The original endings created a well known fandom theory that Shepard was indoctrinated by the Reapers due [[spoiler:to the Catalyst being the exact image of a boy who died at the beginning of the game.]] Once the Extended Cut DLC was released, however, it was clear that Shepard has his entire mind under control with [[spoiler:a new option to refuse all of the choices the Catalyst has offered]].
** And again with the details on the Control ending specifying that [[spoiler:the Illusive Man could never have controlled the Reapers due to being indoctrinated, yet Shepard is free and thus able to sacrifice their mortal existence to become the new, more benevolent Reaper overmind.]]
** IGN's documentary app, ''The Final Hours of Mass Effect 3'', further debunked the theory, as it contained interviews with [=BioWare=] developers, which revealed while they had considered a sequence in the endings wherein [[spoiler:Shepard was indoctrinated]], "the gameplay mechanic proved too troublesome to implement alongside dialogue choices", so the idea ended up getting completely exorcised from the final version of the script.
* ''Franchise/{{Pokemon}}'':
** From the ambiguous ending of the Celebi event in ''[[VideoGame/PokemonGoldAndSilver Pokémon HeartGold and SoulSilver]]'', it was widely believed that [[spoiler: after the player defeats Giovanni in a battle, he walks out of the cave and kills himself by jumping off the cliff it's perched on.]] His appearance at the tournament in ''VideoGame/PokemonBlack2AndWhite2'' confirmed this to not be the case.
** ''VideoGame/PokemonBlack2AndWhite2'' officially disproved the idea that a third version of the new games in a generation was inevitable. [[VideoGame/PokemonXAndY Gen VI]] would be confirmed only a few months after ''B2/W2'' was released in North America and Europe.
** ''VideoGame/PokemonBlack2AndWhite2'' also disproved the theory that the Striaton City Gym Leaders and the Shadow Triad are the same people.
** It had been widely believed that Dittos were the result of a failed attempt at cloning mew given that they appeared frequently in the Mysterious Dungeon/ Cerulean Cave, their colors (both normal and shiny) were the same, and that they were both the only Pokemon to know Transform legitimately. However, an interview with Gamefreak proved this to be false and Dittos were just transforming blobs.
** Many fans had believed for years that Machoke and Machamp were wearing some form of tights, which would fit their wrestler motif. Game Freak denounced the theory and said that the "tights" are actually a part of the Pokemon's skin (probably to avoid the implication that Pokemon are sentient enough to cover themselves up or that they would have naughty bits hidden).
* ''VideoGame/TeamFortress2'':
** Many fans wondered why the mercenaries involved would fight a pointless turf war, and assumed that the team [[ShellShockedVeteran would be both psychologically scarred and infinitely relieved when the Gravel Wars finally ended.]] The supplemental comic "A Fate Worse Than Chess" made their motivations crystal clear: The AffablyEvil PsychoForHire PrivateMilitaryContractors ''love'' [[InHarmsWay their jobs]], and [[OnlyInItForTheMoney will keep fighting as long as there's money involved.]]
** A large bulk of fans naturally assumed that the Pyro was no different from the rest of her team mates in terms of overall personality and how he socialized. This is evident in many fan stories. However, the video ''Meet the Pyro'' reveals that most of the other characters genuinely fear her (Even her closest and dearest friend Engie is unsettled when Pyro's in a killing mood) and that [[AmbiguousGender he herself]] behaves in a cold, almost inhuman fashion (at least on the surface).
* Attempts to joss things in ''VideoGame/{{Touhou}}'' tend not to work so well, not because the jossing is ignored, but because the fans are far too versatile to be encumbered by it. ''Double Spoiler'', which is the most cited attempt at unintentional jossing of a wide variety of things, caused ''an increase'' in AlternateCharacterInterpretations. Very early into the series, the {{fandom}} realized the importance of maintaining creator canon.
* It has been theorised in the ''VideoGame/FireEmblemAwakening'' fandom that Lon'qu, the swordsman who CannotTalkToWomen, would extend his awkwardness around them to [[spoiler: his own prospect daughters from the future, should he marry a first generation character who gives birth to a girl]]. The Future Past DLC josses this: [[spoiler: if he marries Tharja and then he goes rescue the alternate universe!Noire, AU!Noire bluntly brings up his aversion to women, and Lon'qu's reply is basically "WTF?! Why would I be scared ''of my own daughter''?".]]
* Before the release and fan-translation of Mother 3, many fans wrote Videogame/{{Earthbound}} fanfiction about how Ness's continuing conflict with Pokey would play out. Needless to say, Ness canonically never does see Pokey again. It's someone from another era altogether who does him in once and for all.
* For a long time, people held on to a theory that ''Creator/IdSoftware'' gave the source code for the Super Nintendo version of ''VideoGame/Wolfenstein3D'' to Christian game developer ''Wisdom Tree'' as a retaliation against Nintendo's [[{{Bowdlerise}} heavy censorship]] of the game (removing the swastikas, etc.). John Carmack, in an interview that was later quoted in the book ''Masters Of Doom'', debunked this rumor. Id gave the source code to Wisdom Tree because, well, [[MoneyDearBoy they were being paid a good sum of money for it.]]
* There have been a lot of Jossed theories regarding ''VideoGame/TheWalkingDead'', but the most notable one would come from the second season. Everyone expected there to be [[spoiler:a choice where you would have to pick between Luke and Kenny, where one of them would live and the other one would die. Then Tell Tale threw everyone a curveball by killing Luke halfway through Episode 5 and making the players pick between Kenny and ''Jane''.]]
* The ''VideoGame/DeadIsland'' series hints that the survivors are not immune to the virus, merely resistant. Six months later ''Escape Dead Island'' has Xian show up, not as calm as portrayed but otherwise normal, dispelling that idea. The first two games also suggests there is not a cure, however [[spoiler: when Cliff is succumbing to the virus Xian pushes him to take the antidote.]]
* It was rumored that Rashid's missing female friend from ''VideoGame/StreetFighterV'' was Crimson Viper, but later it turned out she was a nameless Shadaloo scientist known as "the Usher" [[spoiler: who was horribly murdered by F.A.N.G.]]. Viper herself '''is''' friends with Rashid and she appears in his story mode (as well as Bison's, Juri's and Urien's), she's just not '''the''' one he's searching for [[spoiler: and she manages to escape from Bison, Juri and Urien on her own.]]
* Subverted in ''VideoGame/FireEmblemHeroes'': the popular [[spoiler: "the 'Mysterious Man' is Zacharias aka Alfonse and Sharena's missing friend"]] theory was apparently shot down when with the revelation that [[spoiler: the 'Mysterious Man' is actually Prince Bruno of Emblia aka Veronica's older brother]]... but then, said theory was ''confirmed'' when [[spoiler: "Zacharias" was revealed to be Prince Bruno/Mysterious Man past alias when he was banished to Emblia.]] So thea speculation that was apparently disproved ''turned out to be true after all''.
* The main characters in ''Franchise/StarFox'' has them with metallic legs, which lead to a popular theory that the Star Fox team had their legs removed in order to prevent blood circulating to the feet and cause the pilots to pass out when flying in the Arwing. Aside from this not working in the same way in real life, an interview with Miyamoto revealed that [[https://youtu.be/1z6a8Oswk1s?t=7m49s the metallic legs were a stylistic choice to make the animals look more human]] and they only made up the G-Diffusor explanation later to cover it up. In short, the Star Fox team have actual legs.

[[folder:Visual Novels]]
* Any popular fan theory on ''VisualNovel/UminekoWhenTheyCry'' usually gets Jossed the very next episode, or is confirmed the next episode. The reason for this is that [=Ryukishi07=] often looked at online forums to find out the current popular theories, just to have them either confirmed, played with or flat out crushed in the next episode. The manga also confirms or denies things that were left ambiguous in the visual novels; for example, the [[spoiler:Rosatrice]] theory (a theory about [[spoiler: Rosa Ushiromiya being the true BigBad and the one behind Beatrice]]), which was growing in popularity with the English-speaking fandom, was jossed entirely by the [=EP8=] manga, which confirmed beyond a doubt that [[spoiler:Beatrice, Shannon and Kanon are all the same person, Sayo Yasuda]].
* A lot of English-speaking ''VisualNovel/HatofulBoyfriend'' fans theorised that Nageki was actually a ''human'', but his ghost had [[{{Animorphism}} taken the form of a mourning dove]] for totemic-type reasons, hence his confusion over what and who he is, and why Hiyoko is surprised to see a [[MisplacedWildlife mourning dove in Japan]]. He also talks a lot about being bullied and tells Hiyoko that if you want to kill yourself, jumping out of the library window is a good way to go, implying he committed suicide because of bullying by jumping out of the window. In the full version, it's confirmed that he really was a bird, and the way in which he died and his reason for killing himself is explored in detail and something no-one could have predicted.
* ''VisualNovel/NineHoursNinePersonsNineDoors'' ends with a shot of the characters [[spoiler:driving through the Nevada Desert]] when they notice a woman who seems to bare a resemblance to [[spoiler:"All-Ice", shortened to "Alice" by some, the apparent Egyptian mummy who according to legend has Ice-9 in instead of water in her body,]] hitch-hiking. Junpei notes that he 'recognizes' the woman, then the game abruptly ends. [[spoiler:Earlier in the game, the characters had already found a coffin where "All-Ice" was supposed to have been hidden, only to find it empty, concluding the entire thing to be a myth, so this ending just opened more questions]]. This led to loads of confused players, but also a pile of theories. Especially when the sequel, ''VisualNovel/VirtuesLastReward'', seemed to have a character called "Alice" who resembles [[spoiler:All-Ice in looks. The most consistent theory was that "All-Ice" had somehow gotten out of her coffin and unfrozen]]. Then the sequel actually came out, and the entire thing turned out to just be a coincidence: [[spoiler:A government agent called Alice, who happened to resemble All-Ice in many ways, just happened to have been tracking terrorists to somewhere in the Nevada desert, and happened upon the characters as they drove. Just to add insult to injury, the game doesn't just joss it with new facts; it straight out kills the the theory with Alice herself calling anyone who believes in the fact she actually had Ice-9 in her body and is an ancient mummy a complete idiot]].

[[folder:Web Comics]]
* In ''Webcomic/AbstractGender'', many fan theories to the big conspiracy involved William Montgomery being somehow linked to the scientists. This was completely thrown out during the seventh and final chapter "Gods" where [[spoiler: he gets transformed too, complete with a mind wipe and new personality as well]].
* In the ''Webcomic/GunnerkriggCourt'' fandom, the two most popular theories about the identity of the third girl from the photo (that she's a relative of Gamma's, and that she's a young Jones) were immediately Jossed by [[WordOfGod the author]] on the forum. Since most of the fans don't hang out on the forum, these theories remained popular, until TheRant below [[http://www.gunnerkrigg.com/archive_page.php?comicID=365 this page]] put them to rest in the bluntest way possible. Also parodied in the rant on [[http://www.gunnerkrigg.com/archive_page.php?comicID=336 this page]]. The first three theories that Tom facetiously shot down were {{Shout Out}}s to to actual EpilepticTrees from the fandom. He has taken this to a whole new level by having Renard Joss a theory that Jones was a robot ''in comic'' on this [[http://www.gunnerkrigg.com/archive_page.php?comicID=592 page]]. When the theory refused to die, Jones herself stated she was not a Robot on [[http://www.gunnerkrigg.com/archive_page.php?comicID=728 this page]]. The rant on that last one also includes a shirt design Jossing the theory yet again.
* ''Webcomic/TheOrderOfTheStick'':
** Rich Burlew, the author, tends to do this with many fan theories, such as [[http://www.giantitp.com/comics/oots0465.html Miko being zombified by Xykon]], [[http://www.giantitp.com/comics/oots0436.html the results of a misfired poison arrow]], and [[http://www.giantitp.com/comics/oots0567.html whether Belkar's prophecy had come true]]. From the FAQ:
--->''In fact, I try not to read anything where people suggest upcoming plot ideas because I hate it when people guess what is going to happen. I feel the uncontrollable urge to change what happens, just to prove them wrong. Petty? Probably.''
** The popular fan theory that the world of ''The Order of the Stick'' was an actual campaign was Jossed in strip # 606.
--->'''Shojo:''' No, the wisdom is simply this: Play the game.\\
'''Belkar:''' Uh, OK, but I thought we weren't actually representing a game campaign, we were just living in a world where the laws of...\\
'''Shojo:''' ''[while he and Belkar are playing ''Dungeons & Dragons'']'' Not ''this'' game!\\
'''Belkar:''' Oh, whew!
** A DoubleSubversion of Jossing occurred with the theory that Elan's father is Lord Tyrinar, the warlord who had Haley's father imprisoned. The first strips where Tarquin appeared had him as a general who'd lost his empire long before; but it was eventually revealed that he was the man behind the throne of an empire that had gone through several figurehead rulers and names -- including Tyrinaria -- and Ian Starshine was one of the prisoners Roy befriended in the Empire's prisons. Tyrinar turned out to be just one of the figureheads, and dead in the present time of the comic.
%%* ''Webcomic/ElGoonishShive'' author Dan Shive has done this too many times to count.
* The author of ''Webcomic/KeychainOfCreation'' has a neat way about handling this. He insists, constantly, that every single [[EpilepticTrees epileptic tree]] is completely true, as sincerely as possible -- no matter what context: IM, forum, in actual discussion... He insists they are always correct, so that in the end, everyone, including him, is proven wrong.
* Done ''spectacularly'' in ''WebComic/EightBitTheater.'' Following [[spoiler:Black Belt]]'s death in, many fans clamored for his return and pointed out that this could be accomplished by [[spoiler:de-petrifying his doppleganger which was turned to stone way back near the start of the series]]. Clevinger responded by having White Mage attempt exactly that, and botch it ''horribly.'' The page where this happens is even titled, [[http://www.nuklearpower.com/2005/11/10/episode-622-now-shut-up/ "Now Shut Up"]].
* The ''VideoGame/MetalGearSolid'' webcomic ''Webcomic/TheLastDaysOfFoxhound'' has been so thoroughly and consistently Jossed -- after each new game release since the series began -- about so many things, from the manner in which one character lost an eye to [[spoiler:his very state of existence]] -- necessitating massive, unconvincing [[RetCon retcons]] that even the ''characters'' [[LampshadeHanging find sketchy]]. The author is aware of this phenomenom. In one of his last blog posts, he says "if I'm lucky, I can be done before [=MGS4=] is released and my entire backstory is contradicted. Again". He was, and it was. Again. What's even more ironic is that the comic ended ''just under two weeks'' before [=MGS4's=] release.
* Despite attempts to reasonably, albeit comically, tie into the storyline of ''Half-Life'', the comic ''Webcomic/{{Concerned}}'' was pre-Jossed when their depiction of the elivery of the Xen Borderworld sample was already undone by ''Half-Life: Decay''.
* Randy Milholland seems to love to do this to his fans in ''Webcomic/SomethingPositive''. In fact, it could be said the only thing more enjoyable to him than not giving the fans what they want is giving them what they explicitly ''don't''. "Dont Give Him Any Ideas" is uttered regularly on feed commentaries. An example: [[spoiler:Pepito]] was originally going to live through the "insane catgirl massacre" storyline. Then somebody sent Milholland a letter saying he wasn't "allowed" to kill any of the characters. "Not even [[spoiler:Pepito]]." Note that the insane catgirls are the in-universe personifications of possessive, loony FanDumb. Having that dead character killed off by a fictionalized variant of the exact type of person who trying to ''save'' him is delicious, delicious {{irony}}. ([[YouKeepUsingThatWord Or something similar]].)
* ''Webcomic/MSPaintAdventures'':
** While Andrew Hussie is usually very permissive of off-the-wall speculation, he sometimes feels the need to correct egregiously wrong interpretations. For instance, he has made it very clear that, in ''Webcomic/{{Homestuck}}'', [[spoiler: Jade's Grampa]] was DeadAllAlong, Kanaya prefers the ladies, and, most of all, [[http://mspaintadventures.com/?s=6&p=002584 WV IS NOT AN IMP]].
** When the [[spoiler: Alpha Kids]] were first introduced there was a lot of speculation about what [[spoiler: then unnamed Dirk and Roxy]]'s personalities would be. The most common theory for [[spoiler: Roxy]] was that she would be a scenester-esque HardDrinkingPartyGirl. Even more popularly, [[spoiler: Dirk was theorised to be a loser anime fanboy with the FanNickname "Weeabro"]]. [[spoiler:Roxy]]'s character turned out to be pretty close, though only on a superficial level [[spoiler: as Roxy is also a passionate scientist and very kind friend]]. [[spoiler: Dirk]]'s did not, and Andrew expressed great distaste for the theory.
** ''Homestuck'''s Jossed WMG pages are ''far'' bigger than the confirmed and active theory pages; so much so there are multiple pages because all of them on one page was breaking browsers. This is because Hussie encourages a lot of speculation.
* ''Webcomic/NicoleAndDerek'': [[TheBully JJ's]] full name was thought to be some derivative of "Joy," as it was thought she was [[Webcomic/NamirDeiter Joy and Issac's]] daughter. The fandom was partially right: [[spoiler: She was revealed as Issac's daughter from a previous relationship, making Joy her stepmother. She was 10 years old (hence already "JJ") when Issac found out she existed.]] We still don't know what "JJ" actually stands for.

[[folder:Web Original]]
* Here's an actual example of Joss jossing something: less than a week after fans announced the WebVideo/DoctorHorriblesSingAlongBlog prequel [[http://horribleturn.com/ "Horrible Turn"]], Joss announced a [[http://io9.com/5398188/prequel-comic-reveals-dr-horribles-childhood-origins prequel comic book]] that appears to be covering the same topics (meeting Captain Hammer, turning evil, etc.).
* For a while, it was thought that the anthropomorphic animals in ''Roleplay/DarwinsSoldiers'' were originally [[WasOnceAMan humans]] turned into animals via advanced technology. WordOfGod [[http://z7.invisionfree.com/thegangoffive/index.php?showtopic=6970&view=findpost&p=9149810 states]] that the anthropomorphic animals were merely "there" alongside humans.

[[folder:Western Animation]]
* Common fan theories insinuate that WesternAnimation/{{Bonkers}} was created as a substitute for a [[Film/WhoFramedRogerRabbit Roger Rabbit]] cartoon that [[WhatCouldHaveBeen was never made]] due to [[ScrewedByTheLawyers legal and copyright issues]] surrounding Roger. Creator/GregWeisman, who helped develop WesternAnimation/{{Bonkers}} and other [[WesternAnimation/{{Gargoyles}} other notable]] Creator/{{Disney}} shows, says that Bonkers was certainly ''inspired'' by Roger, but Disney never had any plans to make a Roger Rabbit cartoon at any point.
* ''WesternAnimation/AvatarTheLastAirbender'':
** [[spoiler:Jet is [[HesJustHiding still alive]]]] -- Jossed by WordOfGod.
** [[spoiler: Smellerbee and Longshot]] died -- Jossed by the sequel comic ''The Promise''.
** [[spoiler:Suki is [[BusCrash dead]]]] -- Jossed by "The Boiling Rock".
** Zuko's mother [[DeathByChildbirth died in childbirth]] ("... I was lucky to be born.") -- Jossed by "Zuko Alone".
* ''WesternAnimation/TheLegendOfKorra'':
** [[spoiler:Amon is Koh the Face Stealer]] -- Jossed by season one finale: [[spoiler: Amon is a human.]]
** [[spoiler:Amon is a firebender who killed his parents]] -- Jossed by season one finale: [[spoiler: Amon is a waterbender, his abusive father died in different circumstances, and we don't know about his mother.]]
** Any theories about the identity of Lin's father ([[FanPreferredPairing Sokka]], Satoru from [[Comic/AvatarTheLastAirbenderTheRift the comics]], etc.) were Jossed in "Operation Bei Fong," when it was revealed to be an unseen character named Kanto.
* ''WesternAnimation/DungeonsAndDragons'': All widely accepted EpilepticTrees jossed with the release of the script of the unaired finale. The kids did ''not'' die in a rollercoaster crash, they are ''not'' in Hell, and Dungeon Master is ''not'' {{Satan}}.
* During the first two seasons, the ''WesternAnimation/TransformersAnimated'' fandom came up with a number of theories as to the isolated, motherless Sari's actual identity, the most popular being some variation of [[spoiler: Sari actually being a robot or cyborg created by Professor Sumdac, possibly made by reverse-engineering Megatron.]] During the second season finale, Sari [[spoiler: injured her elbow, revealing circuitry underneath her skin]], which seemed to support this idea. However, while the theory was right about Sari's true nature, it wasn't entirely correct about her origins. [[spoiler: Sari wasn't constructed by Sumdac or made from Megatron's parts, she was a technorganic protoform created by the Allspark using Sumdac's DNA.]] Also that [[spoiler: Ironhide]] was TheMole, which came up in the first case becauseof a screwup involving faction symbols.
* Literally hundreds of ''WesternAnimation/TeenTitans'' [[FanFic fanfics]] about [[spoiler: Terra's resurrection]] were written in the interim between the end of season two and the series finale "Things Change". When it was revealed that [[spoiler: Terra is alive as a schoolgirl who may or may not remember everything that happened to her in season two, and [[IJustWantToBeNormal just wants to live as a normal girl]]]], 99.9% of these fanfics were Jossed. Fans were left with two choices for future [[spoiler: Terra resurrection]] FanFic: write according to the new, official continuity, or [[FanonDiscontinuity ignore the last episode entirely]] and write FixFic about how [[spoiler: Terra ''should'' have been resurrected]].
* A lot of fanfiction for ''WesternAnimation/TheSecretSaturdays'' has now been Jossed because we now know the reason behind Zak's cryptid powers [[spoiler: he has cryptid powers because he's Kur]]. Also, most fanfictions related to the actual plot of the show have been Jossed because of the end of the latest episode [[spoiler: when we find out that Zak is Kur]], which resolved the story arc with a surprise ending.
* Due to having so much WordOfGod around, this has happened ''many times'' in regard to ''WesternAnimation/{{Gargoyles}}'' on issues such as gargoyle customs and breeding habits, Elisa and Goliath's ability to reproduce, Lexington's sexuality, Katana's physical appearance, etc. Looking at older fanfics can sometimes be a very strange experience...
* After seeing [[ComicBook/{{Shazam}} Captain Marvel]] appear in ''WesternAnimation/JusticeLeagueUnlimited'', supporting ComicBook/LexLuthor's presidential campaign, and then giving a bone chilling speech to his fellow leaguers, many fans of the show believed he would return as an unwitting tool of Luthor. This was jossed by...well, him not coming back.
* ''WesternAnimation/PhineasAndFerb'':
** Due to the creators' refusal to discuss it, there are many theories regarding the whereabouts of the original parents of the characters, including the popular one that Doofenshmirtz is Phineas' father. In the episode "What Do it Do?" it was shown that Doof did go on one date with Linda Flynn, but they never went out again (although she supposedly was what convinced him to conquer the Tri-State Area). In a ''New York Times'' P&F panel, Dan and Jeff addressed one of those points, finally stating that, no, Doof is ''not'' Phineas' father.
** Because of the show having [[WesternAnimation/PhineasAndFerbMissionMarvel an episode that depicted the show as being a universe where]] Creator/MarvelComics characters coexisted and ending the same time as ''ComicBook/SecretWars2015'' started, it was speculated on [[Fridge/PhineasAndFerb Fridge pages]] [[Fridge/SecretWars2015 for both]] that the universe of the former was destroyed by the events of the latter. ''WesternAnimation/MiloMurphysLaw'' is confirmed to set in the same universe as ''Phineas and Ferb'', showing that the universe is still around [[spoiler: or at least among those restored by the Richards and Future Foundation kids]].
** A lot of [[OfficialCouple Phineas & Isabella]] stories often treat Phineas as though he does have feelings for Isabella, but doesn't show them/is reluctant to. Then the TimeSkip episode "Act Your Age" aired, revealing that, not only doesn't he develop official romantic feelings for her until they were in high school, he remained [[ObliviousToLove completely oblivious]] to her crush for a good 10 or so years.
* ''WesternAnimation/StevenUniverse'':
** One popular theory was that Pearl used to belong to [[spoiler: White Diamond]], but it was jossed in "[[Recap/StevenUniverseS5E18ASinglePaleRose A Single Pale Rose]]". [[spoiler: The episode revealed that she actually belonged to ''Pink'' Diamond.]]
** Also jossed were the theories that Pearl or one of the Diamonds [[spoiler: shattered]] Pink. [[spoiler: No one did]].
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'':
** Early on, it was fanon among fans that Scootaloo was the sister of Rainbow Dash. It made a bit of sense: Scoot is part of a PowerTrio, and the two other members are younger sisters of members of the main cast. Since Scootaloo is a pegasus, and it had already been established that she was not Fluttershy's sister, that left Dash as the only other potential sister (and the two have similar personalities and even looks). Creator Creator/LaurenFaust, though, [[WordOfGod insisted on her blog]] that Dash and Scootaloo are not related at all, though she hinted that they will form a friendship. Indeed, later seasons have Rainbow Dash becoming a mentor to Scootaloo.
** [[http://www.equestriadaily.com/2011/03/pinkie-pies-4th-wall-antics-denied.html It was also been confirmed]] that [[GenkiGirl Pinkie Pie]] was ''not'' meant to be a FourthWallObserver, and that all the times she looked into the camera were animation mistakes where she was actually looking at someone else. The ability to break the fourth wall was never discussed by the writers, at least during meetings. However, this does not account for the times she directly communicated her excitement to the audience at the end of the second episode or physically interacting with the IrisOut (seen [[http://www.youtube.com/watch?v=dFlOZFSIsMQ&feature=related here]]) at the end of "Over a Barrel." The increasing number of these BreakingTheFourthWall instances after Lauren Faust left the show imply that remaining showrunners had chosen to [[AscendedFanon adopt this stance themselves]].
** Princess Luna's [[Recap/MyLittlePonyFriendshipIsMagicS2E4LunaEclipsed return and subsequent official characterization]] has invalidated a great deal of fan interpretation. Most fan writers and artists nailed her social awkwardness, but few guessed she'd be just as hammy as Nightmare Moon. She also demonstrated a bit of a prankster streak, something usually attributed to Celestia (or [[AlternativeCharacterInterpretation Trollestia]]) in fics involving the two - often with Luna as the ButtMonkey.[[note]]While the show itself has only shown the sisters interact in a day-to-day situation once (appropriately enough, in the episode "Slice of Life"), the comics continue the idea that Luna is the prankster sibling. Fanfics now either go back and forth between these ideas, or split the difference and make them both prone to the behavior.[[/note]]
** The first week of November, 2011 had significant amounts of {{Fanon}} Jossed. First, a new blind bag wave was released which contains mostly background ponies from the show. None of the five whose toy names had become well-known had their {{Fan Nickname}}s, which caused heated debates about which names to call them by--the old and established {{Fan Nickname}}s or the brand-new toy names whose likes have been rendered obsolete by {{Canon}} in two other blind bag ponies' cases. The good news for them is that the later waves of blind bags stated those official names as second names, [[AscendedFanon making some fan interpretations canon]]. For example, fan name "Lyra" + old official name "Heartstrings" = new official name "Lyra Heartstrings."
** Lauren Faust once revealed more of the actual backstory of Nightmare Moon, and how she was banished, on her Website/DeviantArt page. (Unfortunately, it was in the page-comments section, and has long since scrolled off.) Much of it invalidates the common fanon interpretation of [[DracoInLeatherPants Luna]] as basically the victim of [[RonTheDeathEater Celestia]] in the whole affair. Different from many other forms of Jossing in that Faust pointed out that since it was never stated in the show, it isn't really canon, and it was perfectly possible for [[GodDoesNotOwnThisWorld the current crew]] to contradict it...but, the two-part episode "Princess Twilight Sparkle" made her Jossing fully canonical.
** Fanon usually presents Luna and Celestia as the only "[[WingedUnicorn alicorns]]" in Equestria. "A Canterlot Wedding" revolves around Twilight's older brother getting married to Celestia's niece, an alicorn. She was apparently not originally designed as such when Lauren Faust worked on the story.
** The popular background pony DJ Pon-3/Vinyl Scratch's eyes have been almost universally depicted as red in fanon, but a tiny split-second shot in "A Canterlot Wedding" showed them as being magenta. Fans of her red eyes look quickly scrambled to offer justifications such as; the light making them look different (the split-second in question in which her eyes are revealed took place in shadow), to wearing contacts, to having magical eyes that can change color depending on which one she thinks looks coolest on the given day.
** Spitfire, captain of the Wonderbolts, commonly had her previously unrevealed cutie mark drawn by fans as a lightning bolt similar to the one that appears on her flight suit, but mixed with a dash of flames at the top of it (seen [[http://browse.deviantart.com/?q=spitfire+fanon+cutie+mark#/d5i3vox here]]. "Wonderbolt Academy" officially revealed it as more of a set of flames worming a wing-like image, possibly representing that of a phoenix (as can be seen [[http://spitshy.deviantart.com/art/Spitfire-s-cutiemark-343051621 here]].
** After the release of a toyline putting special focus on a particular unicorn named Sunset Shimmer, fan speculation arose that she would be taking Twilight Sparkle's place in the series [[spoiler: after Twilight became an alicorn at the end of the third season.]] Writer Megan [=McCarthy=] later stated in a tweet that Sunset Shimmer was a toyline-exclusive character and would not be appearing in the series...[[TrollingCreator which was somewhat true]]. She turned out to be the main villain (and, [[LateArrivalSpoiler after the first film]], [[TheAtoner the heroine protagonist]]) of the ''WesternAnimation/EquestriaGirls'' SpinOff series.
** The author of the Daring Do books have long been believed to be Twilight's mother, Twilight Velvet; her blind bag card and one of the mobile games says she's a writer, and her appearance in the IDW comic reveals several writing awards. However, the fourth season revealed that the books are written by the reclusive A.K. Yearling, [[spoiler:[[RealAfterAll who actually is Daring Do]], and who bases the books on her actual adventures]]
** In ''[[Recap/MyLittlePonyFriendshipIsMagicS4E23InspirationManifestation Inspiration Manifestation]]'', finally seeing him without his straw hat, the fans now know for sure that Rarity's father is a unicorn, and not an Earth pony as many had believed. (Though this was previously revealed in the Elements of Harmony guidebook.)
** It was surprising to see in ''[[Recap/MyLittlePonyFriendshipIsMagicS4E26TwilightsKingdomPart2 Twilight's Kingdom Part 2]]'', that the black patches on Luna's rump are part of her coat, not her cutie mark. Later "unjossed" when Celestia and Luna swap cutie marks in ''[[Recap/MyLittlePonyFriendshipIsMagicS7E10ARoyalProblem A Royal Problem]]'' and Celestia gets the black batch as well[[note]]Likely as it was the only way that white moon would show up on Celestia's nearly white rump[[/note]].
** A common AlternateCharacterInterpretation of Celestia was nicknamed "Trollestia," after it was revealed in-canon that Celestia plays some good-natured pranks. This extended so far as to give her RonTheDeathEater tendencies in fanworks, up to and including treating Twilight terribly and ruling as a tyrannical dictator. Much of this revolved around the idea that Celestia could have solved lots of problems in Equestria, but did nothing. An issue of the IDW comic Jossed this idea, with Celestia saying that it's true that there were a lot of problems that she could have solved without Twilight's help, but Celestia does it because it's how Twilight will best learn.
** It was common for fans to depict griffons as a ProudWarriorRace, with all sorts of lore to go along with it. The episode "[[Recap/MyLittlePonyFriendshipIsMagicS5E8TheLostTreasureOfGriffonstone The Lost Treasure of Griffonstone]]" showed that the griffons were really a greedy race that [[OnlyInItForTheMoney only do anything for money]], and who all live in squalor since a sacred treasure was stolen from them (though flashbacks showed that they ''were'' proud warriors before the treasure was stolen).
** It was common for fans to think that [[AlphaBitch Diamond Tiara]] only had her father [[UnclePennybags Filthy Rich]] to raise her. Then came [[Recap/MyLittlePonyFriendshipIsMagicS5E19CrusadersOfTheLostMark "Crusaders of the Lost Mark"]], where we were introduced to Diamond's mother [[AbusiveParents Spoiled Rich]].
** Rainbow Blaze from "Games Ponies Play" was assumed to be Rainbow Dash's father until her actual father was introduced in "Parental Glideance".
** Fanfics often depicted the fight between Princess Celestia and Nightmare Moon as a [[GreatOffscreenWar massive all-out war]], involving entire armies and spanning over the course of several battles. However, [[Recap/MyLittlePonyFriendshipIsMagicS4E2PrincessTwilightSparklePart2 the second half]] of the season four premiere revealed that the two only had one brief confrontation before Celestia banished her sister to the moon.
** Applejack's trademark hat was an interesting case. The show ''very'' heavily implying her parents are deceased led to fans almost unanimously believing her hat was a TragicKeepsake. Even after jossing this one ''twice'', first revealing she merely won it apple-bobbing at a fair and second revealing she has an entire closet of duplicates, some fans simply refused to let go of this one. [[spoiler:Said fans more or less had the last laugh when ''The Perfect Pear'' aired and not only all but bluntly stated her parents are deceased but also showed her father wearing an identical hat, allowing fans to at least claim the TragicKeepsake aspect is there in spirit.]]
* Fans swore ''WesternAnimation/FamilyGuyPresentsLaughItUpFuzzball'' used {{Rotoscoping}} for certain scenes from the ''Franchise/StarWars'' movies, but the people who made it insisted they just were really precise about recreating the scenes.
* ''WesternAnimation/KaBlam''. WordOfGod says that Henry and June are only like brother and sister and neither have feelings for each other in any direction, which breaks the fanon that's been going on since the show premiered.
* In its twenty-plus years on the air, ''WesternAnimation/SouthPark'' has founded the time to joss a surprising number of fan theories:
** After the episode "You're Getting Old" aired, which featured a lengthy exchange where Stan's Parents decried the show's formulaic structure, indicated a desire for change, and seemed to divorce, lead to rampant speculation that series creators Creator/TreyParkerAndMattStone were suffering from CreatorBreakdown are were preparing to end the show. To make things more confusing, sources differed on whether or not the show had been renewed beyond the next seven episodes of the season. Trey and Matt appeared on ''The Daily Show'' shortly later to promote ''The Book of Mormon'' and denied being unhappy with the show. Indeed, the show has continued on for several seasons since, though the episode did lead a few years later to stretching the sitcom format.
** Although given he is a fourth grader, fan theories about Cartman's sexuality have been prevalent for years, with the heavy FoeYay between him and Kyle being a key component. Despite previous indications of attraction to women, it became popular fanon that he was fully homosexual, and season 19's "Tweek x Craig" cemented some level of attraction to men, seeming to confirm the theory... during the twentieth season, however, he had a multi-episode relationship with female classmate Heidi Turner (an AscendedFanon pairing in its own right) which lead to very mixed reactions, as so many fans believed he was fully homosexual. That theory is mostly Jossed, but due to his age, some fans continue to believe his relationship with Heidi may be a cover for homosexuality.
** The season 18 episode "The Cissy" may have been this for Cartman being transgender, as he pretended to be transgender to receive his own bathroom, and when this private status was threatened, seemed to drop the act entirely by the episode's end. Again, due to his young age, it's possible he may be transgendered yet, but it seems unlikely this could come to pass during the series.
** Many theories existed during the fandom's first few years about the boys' beneath their hats, and indeed, the show wasn't sure - early scripts suggested Stan might have blonde hair, for example - but by season 5's "How To Eat With Your Butt", it was revealed that Stan had black hair, Cartman had brown hair, Kenny was a blonde, and that Kyle had a reddish brown "jewfro".
** A much more minor example, but a brief line in "Fun With Veal" referred to South Park's Chief-of-Police, with Officer Barbrady later indicating he was in charge, suggesting he was the Chief-of-Police in the town, having been the only recurring cop until the end of the fourth season. As another police character, Detective Harrison Yates, was introduced, he and Barbrady were excluded almost completely from each others' episodes, and even implied to run different departments. (Barbrady as South Park Police, Yates as Park County) When the characters finally interacted at length, Yates appeared to be Barbrady's superior, and the latter was fired. Matt and Trey indicated on the commentary that this was intentional and they had "no idea" how the characters fit together.
* A hugely popular theory among ''WesternAnimation/YoungJustice'' fans was that ComicBook/TheFlash would pull a HeroicSacrifice in the Season 2 finale, acting as a [[MythologyGag nod]] to his death in ''ComicBook/CrisisOnInfiniteEarths''. [[spoiler:''A'' Flash did indeed end up dying in this manner...except it was ''Kid'' Flash!]]
* ''WesternAnimation/{{Superjail}}'':
** There were quite the fans that readily assumed that the season 3 premiere "Stingstress" would resolve the Ultraprison takeover in either having everyone fight it out, or that it would have the Warden and the Mistress become an OfficialCouple and triumph over the Lord Stingray/Mistress pairing. The reality? The episode was mostly built on a TimeSkip from the end of season 2 showing the disastrous effects of an integrated jail with no real huge bloodbaths (aside from a brief bathroom brawl), and the Warden/Mistress expectations were sunk when the Warden had ''no clue'' how to have sex with the Mistress, leaving Alice to settle the matter instead.
** The idea of Jailbot coming to save the day in the above mentioned episode was based off TheStinger to the season 2 finale that preceded it (Jailbot repairing himself and rushing back to the jail). However, it too was debunked when it was revealed that Jailbot did arrive back to the jail... just several months too late to do anything helpful, and he instantly got threatened by Nova.
** Gary's increased prominence in season 3 led to lots of fan theories that he'd be the BigBad for the finale, and that he was clearly up to something. Not such the case, especially with the plot of "Burn Stoolie Burn" being more about Warden and Ash ruining everything, although [[spoiler: his vocal cords did wind up possessing the Peedee puppet in the episode BEFORE the finale, leading to another plot point to be resumed in season 4.]]
** Due to the minor amount of continuity and follow-through in season 3 ("Stingstress" being a resolution to "Vacation", the Rat plot in "Uh Oh It's Magic" and "Planet Radio"), the ending of "The Trouble with Triples", rather than being taken as a simple GainaxEnding, had some amount of fans believing that it was another plot point to be resolved, what with the Twins being forcibly taken back to their world. Not quite the case [[SnapBack when the Twins were back in the following episode]]. The writers even ridiculed the fans who thought it would actually be continued, pointing out that several endings were only meant as gags and never meant to be resolved. Although there is also the tease that due to said reactions, that it may be revisited in season 4 (with there already being speculation if the episode will be a TakeThat to the fans that missed the point).
** It was a bit of a meme to depict Lord Stingray as a yellow mutant creature when out of his suit, due to a roleplayer insisting on it being his real appearance. After "Stingstress" revealed him to be a human man (though without removing his mask, and [[TrollingCreator Christy Karacas asking fans if they were really "sure" if he was human]]), "Beast Ray" died down a little, but is still seen in occasional fanworks.
* ''WesternAnimation/TaleSpin''. There are several episodes which do not include Higher For Hire or Kit, and are Baloo and Louie having adventures on their own. This led to a fan theory that these episodes were from an earlier version of the show, and Kit and Higher For Fire were added as retooling. [[note]] It's possible this theory was inspired from fellow [[TheDisneyAfternoon Disney Afternoon]] series WesternAnimation/{{Bonkers}} which this did happen to.[[/note]] However once things like the series bible, and the episodes production numbers became public, this was quickly squashed. In fact the very first episode written and produced was "I Only Have Ice For You", in which Rebecca tried to get her pilot's license, revolved heavily around Higher for Hire.
* ''WesternAnimation/LooneyTunes''. For a while, it was speculated among fans that the reason for the reviled pairing of WesternAnimation/DaffyDuck and WesternAnimation/SpeedyGonzales was that, in the mid-1960's (see: UsefulNotes/FallOfTheStudioSystem), the moviegoing public was largely reduced to the American Southwest. Daffy and Speedy (along with Bugs Bunny) were the two most popular Looney Tunes characters there, so naturally Warner Brothers wanted to produce more cartoons with them. Meanwhile, due to budget constraints, it was decided that the most logical thing to do was to pair the two characters together. While the second half of this theory (that they were paired together for financial reasons) is correct, the first part was debunked by renowned animation historian Jerry Beck around 2005-ish. The reason why so many cartoons featuring the two characters were made was because ''television distributors'' were demanding more cartoons with them, not because of a segmented moviegoing audience.
* ''WesternAnimation/GravityFalls'': "Society of the Blind Eye" ended one of the most popular fan theories, with even a leaked image seemingly confirming that [[spoiler:[=McGucket=] wrote the journals. He did not write the journals, but he was involved with the true author before he quit the project, overused a mind eraser to forget the events, becoming insane]]. The leaked image in question turned out to be a [[TrollingCreator deliberate hoax]] by the creator Alex Hrisch in order to discredit an ''even more'' popular fan theory [[IKnewIt that turned out to be right]]. (On a related note, it was revealed that one aspect that was part of both theories was incorrect, as [[spoiler: Grunkle Stan was never involved with the original research team that worked on the portal.]])
** When fans of the show learned from the resume of [[Podcast/WelcomeToNightVale Cecil Baldwin]] that he'd be voicing a character called Tad Strange, described only as "kind of a square" by Alex Hirsch (in-character as Bill Cipher) in a Reddit AMA, they immediately assumed that he'd be the brother to the demonic BigBad, Bill Cipher. Cue fanart and fanfiction featuring a purple square with a bowler hat. In an interesting case of this trope, Alex Hirsch immediately tried to clarify that it was actually a gag character with no importance to the plot...but since this was after the event listed above, [[CryingWolf no one believed him]]. When the episode featuring the character finally aired, in turned out that [[IronicName Tad Strange]] was just a [[TheGenericGuy completely normal man]] who was only used for two jokes. [[https://www.youtube.com/watch?v=UPEZRAxNdEI Alex humorously recapped the entire incident a few weeks later]].
--->'''Alex Hirsch''': That's the honest truth about Tad Strange. [[CassandraTruth No one's going to believe me]]. You all probably think Tad Strange is still a secret, purple demon. Maybe he is...no, he's not. [[YouHaveGOTToBeKiddingMe Why would I]]--it has nothing to do with me, [[EpilepticTrees it came from you]]!
* In ''WesternAnimation/TheAmazingWorldOfGumball'', Penny was frequently depicted in fanart as a deer without her shell on due to her antlers. [[Recap/TheAmazingWorldOfGumballS3E20TheShell ''The Shell'']] revealed she was actually [[spoiler:a shapeshifting fairy like creature without it.]]
* ''WesternAnimation/{{Archer}}'':
** An InUniverse example occurs where various characters claim throughout the series that Krieger is probably a clone of UsefulNotes/AdolfHitler. In one Season 6 episode, he points out that he can't be a clone of Hitler because if he was, [[CaptainObvious he would look like Hitler]]. Malory seems to have never considered this.
** After the penultimate episode of ''WesternAnimation/ArcherDreamland'' ends with Trexler saying [[spoiler:that Mother killed Woodhouse]], fans thought that his reluctance meant that he was lying. [[DownplayedTrope Semi-Jossed]], since [[spoiler:while she didn't really kill Woodhouse, Trexler genuinely thought she did.]]
* ''WesternAnimation/StarWarsRebels'': After Kanan [[spoiler: was permanently blinded by Darth Maul]] in the Season 2 finale, some fans began to speculate that he was an {{Expy}} of [[spoiler: Qu Rahn from ''VideoGame/StarWarsTheForceUnleashed'']], a character who no longer exists in the post-Disney buyout canon. Pablo Hidalgo confirmed that there is no connection between the two characters, and any similarities can be chalked up to the fact that they're both partially inspired by [[spoiler: the iconic Japanese film hero Film/{{Zatoichi}}]].
* The case of Volpina from ''WesternAnimation/MiraculousLadybug'' is perhaps as bad (or amusing) as the previous ''Gravity Falls'' example. Months before her premiere in the show, the creators posted a teaser of her character design, which was cool enough to get instant fan love and a wealth of {{Fanon}}. Fans decided that she would be an older, more experienced Miraculous holder, that she'd be a playful trickster who'd serve as a CoolBigSis to Cat Noir and Ladybug, and that she'd be bisexual and a big flirt with a non-serious crush on Marinette. When the character premiered in the show proper, she turned out to be almost the exact opposite -- a selfish ConsummateLiar AttentionWhore who hates Ladybug and tries to manipulate Adrien into dating her. To add insult to injury, [[spoiler:she wasn't a Miraculous holder at all, but just another akuma victim]]. The fandom was [[BrokenBase temporarily rather shattered by this development]], although most admitted they only had their own ideas to blame. Season 2 reveal that [[spoiler: there is a Volpina miraculous, but it is unattributed for the moment and still in mr.Fu's box, along with the yellow miraculous.]]
* A popular ''[[WesternAnimation/TheSimpsons Simpsons]]'' fan theory insists that Homer never actually awoke from his coma at the end of "[[Recap/TheSimpsonsS4E18SoItsComeToThisASimpsonsClipShow So It's Come to This: A Simpsons Clip Show]]" and that all subsequent episodes were AllJustADream, thus explaining away the show's later [[ContinuitySnarl continuity problems]] and changes in [[DenserAndWackier tone]] and [[{{Flanderization}} characterization]]. This theory has been [[http://www.huffingtonpost.com/2015/02/13/simpsons-theory-shot-down_n_6681278.html thoroughly debunked]] by executive producer Al Jean.
* In ''WesternAnimation/VoltronLegendaryDefender'', one wildly popular theory said that [[spoiler: Keith was half Galra and [[HumanMomNonHumanDad Thace was his long-lost dad]]. The first part turned out to be true, but Keith's dad wasn't Thace, [[InvertedTrope or even an alien at all]].]]

[[folder:Real Life]]
* RealLife does this to you all the time. Note on this Wiki [[ScienceMarchesOn Science]], [[TechnologyMarchesOn Technology]], [[DatedHistory History]], and [[SocietyMarchesOn Society]] Marching On.
* Various end of the world theories have been thoroghouly jossed by our continued existence.
** The Y2K bug did not cause a catastrophic collapse to society by cripping our computer infrastructure.
** The Mayan calendar [[MayanDoomsday "predicted"]] the world would end in 2012, but nothing happened. [[SubvertedTrope Subverted]] in the sense that the mayans didn't even say the world would end on December 21, 2012.
** Various interpretations of UsefulNotes/{{Nostradamus}}'s writings have theorized world-end dates; so far, all jossed.
* Many, many UsefulNotes/ConspiracyTheories in general are jossed as predicted results of whatever EpilepticTree you followed down the rabbit hole refuses to materialize.
* Throughout the 20th century, the idea that space travel would become common by X date. Some predicted it as early as the 50s. As ScienceMarchesOn, and the actual logistics of it are more known, it's becoming more and more of a discredited trope. Flying cars also.
* Sports betting and stock market speculations get thoroughly jossed constantly, leading many to financial ruin.