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A CrossOver which, for some reason or other, clearly doesn't count even remotely within the visiting characters' continuity. The characters might look and act the same, but you know these events are never going to be referenced in their own show. This may be due to copyright or because one continuity clashes too much with the other.

See also: MassiveMultiplayerCrossover and UsefulNotes/ComicRelief.

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!!Examples:

* One of the sweeter crossover yet not-a-crossover moments occurred on ''Series/ILoveLucy''. George Reeves appeared, wearing his {{Superman}} costume, and was referred to exclusively as "Superman" by the rest of the cast. The dialogue was designed to avoid spoiling for the children in the audience the illusion that this was the genuine Superman -- while making it clear to the adults watching the program that Ricky and Lucy were interacting with the actor George Reeves and calling him Superman merely as a playful but respectful reference to his famous character.
** There's a meta-joke where Reeves moves a piece of heavy furniture -- causally -- with one hand -- and the adults looked momentarily stunned. [[RealAfterAll Maybe it WAS a crossover?]]
* ''WesternAnimation/TheSimpsons'' has done this innumerable times, such as:
** Harry Morgan appeared as [[Franchise/{{Dragnet}} Bill Gannon]].
** David Duchovny and Gillian Anderson appeared as [[Series/TheXFiles Mulder and Scully]].
** Patrick [=McGoohan=] appeared as Number 6 from ''Series/ThePrisoner''.
* A more blatant example would be when DrKatzProfessionalTherapist appeared on ''WesternAnimation/SouthPark'' and was incinerated by lava.
** In "Super Best Friends", the cast of ''ThatsMyBush'' is shown in the White House. While both shows were created by Trey Parker and Matt Stone, it still counts as fake since ''ThatsMyBush'' is a ''live action show''.
* ''Series/{{Monk}}'' and several of the USANetwork shows including ''Series/TheFortyFourHundred'' and ''Series/{{Psych}}'' were crossed over in a series of their commercials. Since ''Monk'' takes place in San Francisco CA, ''The 4400'' in Seattle WA, and ''Psych'' in Santa Barbara, CA -- it's unlikely the crossover would ever happen canonically to any of the aforementioned shows.
** Particularly since ''The 4400'' has been cancelled. Sigh.
** USA loves doing this:
*** The campaign leading up to the premiere of ''InPlainSight'' had Mary being visited by characters from USA's other shows, who would give her "housewarming" gifts and welcome her to "the neighborhood". Perhaps the funniest involved Wrestling/{{WWE}} wrestler The Big Show bringing Mary a gift wrapped folding chair, then being denied access to her bathroom.
*** Similarly, in one ad for ''RoyalPains'', [[BurnNotice Michael Westen]] sends Hank Lawson a care package containing sunglasses, sunscreen, and a brick of C4 "because you never know when you'll need a stable plastic explosive."
*** The characters from ''WhiteCollar'' have started appearing in these as well - they have done crossover commercials with ''Psych'', WWERaw (the Big Show again) and ''BurnNotice''.
*** Also, in celebration of ''Monk'''s final season, USA released a new round of ads where the characters from all of its currently airing original shows (''Series/BurnNotice'', ''Series/{{Psych}}'', ''InPlainSight'', ''RoyalPains'', ''WWERaw'', ''Series/LawAndOrderCriminalIntent'') give their opinions and recount their experiences with the titular detective.
** The commercials for the second ''Film/{{Hellboy}}'' movie did the same thing, with [[FanNickname Big Red]] meeting up with James Lipton, ''{{Chuck}}'', appearing on GhostHunters and AmericanGladiators and doing a "The More You Know" PSA.
** In 2009, ABC started a new ad campaign called the "ABC House" in which characters from various ABC shows live together under one roof.
*** One such ad seemed designed to toy with ''{{Lost}}'' fans: Dominic Monaghan, who played Charlie [[spoiler:until he died]], appears in one of the ads, even though he wasn't on an ABC show at the time. His [[spoiler:death]] is even mentioned in the ad. Fans went wild wondering if the ad confirmed he was coming back to ''Lost''. A few weeks later, he was revealed to be joining the cast of ''Flash Forward'', a new ABC show...[[spoiler:although he did appear throughout the final season]].
* Pictured is the charity special "[[Recap/DoctorWho30thASDimensionsInTime Dimensions In Time]]", a ''Series/DoctorWho''/''EastEnders'' crossover. Since the shows have since been shown as MutuallyFictional, it's probably fair to say it never happened. (And before the new ''Doctor Who'' series established it as such, the Literature/DoctorWhoNewAdventures novel ''First Frontier'' wrote it off as AllJustADream).
* One episode of ''{{Roseanne}}'' had Luke and Laura, of ''GeneralHospital'', talking with Dan and Roseanne about the wacky adventures each couple had experienced throughout their respective marriages.
* ''VideoGame/SuperSmashBros''. in general, ''The Subspace Emissary'' (aka ''Super Smash Bros. Brawl''[='=]s adventure mode) in particular, as all of the characters are living trophies that look like the actual characters.
** Which leads to the very strange occurrence of Link and ''Yoshi'' fighting against ''Mario'' and Pit.
* On ''WesternAnimation/TheVentureBrothers'', Race Bannon from ''WesternAnimation/JonnyQuest'' makes an appearance in "Ice Station-- Impossible!", but dies onscreen. In the season 2 episode "Twenty Years to Midnight", the group has an encounter with a deranged, drug-addled, middle-aged Jonny Quest.
** In the third season you see Hadji working a desk job for Dr. Venture, Race in a flash-back torturing a [[GIJoe SPHINX]] operative, Jonny working at a day camp hosted on the Venture compound, and Dr. Zin visits him.
*** The "fakeness" of these crossovers is debatable. Cartoon Network Studios -- originally HannaBarbera -- has the official rights to the Jonny Quest characters, and they were referred to by name, until...
*** From season three onward, the creators have walked this back a bit, referring to Johnny only by his first name and Dr. Zin only as "Doctor Z". This is due to an planned LiveActionAdaptation of ''Jonny Quest'' currently in DevelopmentHell, which forced the writers to be more subtle about who the characters really are by turning them into [[CaptainErsatz pastiches]] of the Quest cast.
* The scene in the ''FamilyGuy'' episode "Movin' Out (Brian's Song)" involving Quagmire and ''TheSimpsons''...
** As well as the ''WesternAnimation/AmericanDad'' characters in "Lois Kills Stewie", which was [[AllJustADream all just a simulation]].
** Don't forget Roger's cameo at the end of the time-traveling season 5 finale.
** The season 8 episode "The Splendid Source" has Peter and his friends trying to track down the origin of a dirty joke with Bender from ''Futurama'' being one in a chain of many others that have heard the joke.
* The crossover between ''WebVideo/TheAngryVideoGameNerd'' and ''CaptainS'' in which Cap and the Nerd team up to save [[SavingChristmas rescue Santa Claus]] was explicitly non-canon within Cap's continuity. Just as well, as the Nerd was totally neutered - he was only allowed to swear once (which was bleeped).
** This seems to be canon in [[WebVideo/TheAngryVideoGameNerd Nerd]] videos. [[NegativeContinuity What canon there is, anyway...]]
* Most crossovers between [[MarvelUniverse Marvel]] and [[TheDCU DC Comics]] never get referenced in their own lines. The exception is ''{{JLA-Avengers}}'', which had lasting influences on DC's universe, though the other company's characters can't be mentioned or depicted in flashbacks.
** Amusing lampshade: A villain that first appeared in a Franchise/{{Batman}}''/''[[ThePunisher Punisher]] crossover turned up in ''Nightwing''. Nightwing had a rare memory lapse about the name of the other guy he met him with. ("Out-of-town psycho vigilante... want to say 'The Puncturer'? Something like that...")
*** {{Azrael}} references longtime Punisher foe Jigsaw by ''name'' during the Knightsend story arc, indicating that the crossover between Punisher and the Azrael-Batman was either canon for the sake of DC's side of things, or that someone messed up in writing the script for the issue in which it is mentioned.
*** What makes it awesome is that the Batman/Punisher crossover was the second part of a two-part story. The first one? ''ComicBook/ArchieMeetsThePunisher'', which also {{Sequel Hook}}ed it.
** It used to be a roughly-annual tradition, back in the 70's, for both the JusticeLeague and Comicbook/TheAvengers to have a story taking place at the Rutland, Vermont Halloween parade. At least once, events in them influenced each other. It even spread to three other comic companies (Whitman, Charlton, and Warp). More info here: http://www.marvunapp.com/Appendix4/rutlandvt.htm
** One story that started in Comicbook/{{Aquaman}} #56 was concluded in {{Sub-Mariner}} #72, written by the same author. (Mind you, there was a three year gap between the two issues).
** Are we also assuming that ''GuidingLight'' did ''not'' in fact take place in the Marvel Universe? ...good.
** Another amusing lampshade: After the ''DC vs. Marvel/Marvel vs. DC'' crossover, an issue of ''[[JusticeLeagueOfAmerica Extreme Justice]]'' showed BlueBeetle stopping a villain using a sticky web substance. He proudly mentioned picking it up from [[SpiderMan a guy who recently visited from another universe]]. This earns extra in-joke points because they're both bug-influenced heroes co-created by SteveDitko.
** Parallax remembered that Cyborg (the evil Superman clone, not the one from the Teen Titans) once escaped to another universe, and that he had to pursue him. Just that. He does not mention Cyborg's fight with the Silver Surfer or his own fight with Thanos, at the Green Lantern-Silver Surfer crossover.
* The Christmas episode of ''Series/FatherTed'' featured the cast of the contemporary Irish comedy ''Series/{{Ballykissangel}}''. However, it was a dream sequence.
* Not quite even a fake crossover, but a [[LawyerFriendlyCameo thinly veiled]] version of ''Series/ArrestedDevelopment'' character GOB appeared on ''Series/SesameStreet''.
* In the intermission of an episode of ''Podcast/BlackJackJustice'', [[RedPandaAdventures the Red Panda]] and the Flying Squirrel show up to deliver a contractually-obligated anniversary wish... and Jack and Trixie get annoyed at them "horning in on our racket". This results in a CatFight between the Squirrel and Trixie, and the men getting very distracted by it. At the end:
-->'''The Red Panda:''' So, does this count as a crossover?
-->'''Jack Justice:''' Don't push it.
* Do you really think ''SoulEdge'' or ''SoulCalibur'' will ever show up in the ''Franchise/StarWars'', ''Franchise/TheLegendOfZelda'', ''VideoGame/GodOfWar'' or {{Image}}[[note]]through {{Spawn}}'s involvement[[/note]] universes?
** Oh really? [[http://www.penny-arcade.com/comic/2008/01/11/ It could work...maybe...]]
** While the ''Soul'' series ''does'' share continuity with ''VideoGame/{{Tekken}}'' (Soul's Yoshimitsu is the ancestor of Tekken's Yoshimitsu), Heihachi's appearance in SoulCalibur II was '''not''' canon.
** Actually, there is a ''SoulCalibur'' crossover under the ''Star Wars'' label: ''Visions of the Blade'' and both titular weapons made appearances. However, it was published under the Infinities label and is non-canon. Like the IndianaJones crossover where the ''Millenium Falcon'' crash-lands on Indie's homeworld and he finds a [[ActorAllusion very familiar-looking fellow]] inside, dead.
* ''Disney/{{Hercules}}: [[RecycledTheSeries The Animated Series]]'' [[http://www.youtube.com/watch?v=8Vbj-YIp6Lk crossed]] [[http://www.youtube.com/watch?v=utjsCsly8zs over]] with ''Disney/{{Aladdin}}''. OK, all were spinoffs of the DisneyAnimatedCanon. But Ancient Greece and Medieval Arabia are ''millennia'' apart...
** [[AnachronismStew Which never stopped]] the villain Mechanikles.
* The ''GIJoe'' comics had two in-continuity crossovers with ''Comicbook/TheTransformers'' comics during the Marvel run (with one of them occurring within the regular ''G.I. Joe'' series). When the comic was later revived by Devil's Due, the events of both crossovers were retconned and major events in the crossovers that affected the ongoing continuity (such as [[spoiler:Dr. Mindbender's revival]]) had to be explained differently.
** G.I. Joe actually did this a few times. In Amazing Spider Man #268 (1985), Duke makes an unnamed appearance as head of a military unit assigned to carry out the wreckage of the Heroes for Hire building (which the Beyonder had turned into gold). It's the first item at the top of the page here: [[http://www.myuselessknowledge.com/joe/comics/gijxovers.html]] There was also a short story in Action Force (which G.I. Joe was known as in the UK) in which Quick Kick narrates the story of Shang Chi, Master of Kung Fu, and explains that Shang Chi was his master. Quick Kick describes Shang Chi as the greatest artist he's ever known and places him above Iron Fist, Batroc, and Elektra. This was done to introduce readers to the Master of Kung Fu reprints that would become a back-up feature in the Action Force comics. The story can be enjoyed here [[http://www.bloodforthebaron.com/comics/maf/005/index.html]]
** Similarly, an early issue of ''Comicbook/TheTransformers'' comics had the Autobots briefly teaming up with {{Spider-Man}}, before later issues indicated that the Transformers were in a separate universe from most other Marvel comics.
*** A few issues after Spider-Man teamed up with them, Ratchet traveled to the Savage Land (Marvel's jungle hidden in the antarctic where dinosaurs, cavemen, etc, still exist) to track down the Dinobots. And of course there was Circuit Breaker, whom Marvel snuck into a Secret Wars II appearance BEFORE her Transformers debut, just to cement her ownership as being wholly Marvel's.
** Ironically in the original four issue mini, both Nick Fury and Dum Dum Duggan appear and briefly reference ''Franchise/{{Godzilla}}'s'' [[Comicbook/GodzillaKingOfTheMonsters Marvel run]] when news first starts to spread about living robots coming out of Mt. Saint Helens.
*** It should also be noted that the military vehicles used by the army in that episode were in fact G.I. Joe weapons: The MOBAT Tanks and the Wolverine Missile vehicle.
* "Beans", a three-part crossover between (arguably) the three most popular ''VideoGame/SuperSmashBros. Melée/Brawl'' machinimas on Website/YouTube.
* GregWeisman (creator of both ''WesternAnimation/{{Gargoyles}}'' and ''WesternAnimation/TheSpectacularSpiderMan'') staged a radio play for a con that was a crossover between his two shows. Naturally, it falls under this trope.
* ''Theatre/AvenueQ'' and ''FiddlerOnTheRoof'' had a hilarious one of these for the 2008 Easter Bonnet competition in which everyone was Jewish and lived on "Avenue Jew", obviously it didn't affect the plotline of either show.
* The events of "Mesal Gear Solid: Snake Escape" and "Snake vs. Monkey" will unlikely be referenced in any future ''Franchise/MetalGear'' or ''VideoGame/ApeEscape'' game.
* Basically any game in {{Capcom}}'s ''[[CapcomVsWhatever Vs series]]'' (i.e: ''VideoGame/MarvelVsCapcom'', ''VideoGame/SNKVsCapcom'', ''VideoGame/TatsunokoVsCapcom'').
** Actually, the ''Marvel vs. Capcom'' games (and [[{{VideoGame/XMenChildrenOfTheAtom}} their]] [[{{VideoGame/MarvelSuperHeroes}} predecessors]]) take place in an official Marvel [[AlternateUniverse universe]] named "[[http://marvel.wikia.com/Earth-96169 Earth-96169]]", completely separate from [[http://marvel.wikia.com/Earth-616 Earth-616]] (AKA the main Marvel universe), so they're not technically Fake Crossovers on the Marvel side.
* There were a few ''ComicBook/{{X-Men}}'' + ''Series/StarTrekTheNextGeneration'' comic crossovers, which is HilariousInHindsight thanks to Creator/PatrickStewart.
** These were followed by ''Comicbook/StarTrekTheNextGenerationDoctorWhoAssimilation2'', which was automatically made a Fake Crossover for on both sides via canon policies for both series (''Star Trek'' comics are non-canon, period, whereas as a public broadcaster, the BBC's charter forbids its fiction programs to make plot-critical references to merchandise, which much of the ''Franchise/DoctorWhoExpandedUniverse'' would qualify as).
* {{Muppet}}s are prone to this:
** ''TheCosbyShow'' had an entire episode of a dream sequence, with the second half involving characters from ''Series/TheJimHensonHour''.
** ''Scrubs'' made a guest appearance in ''ItsAVeryMerryMuppetChristmasMovie'', as Miss Piggy's very brief acting career (she plays a patient who dies during an operation).
*** In turn, Oscar the Grouch, Grover and Elmo from ''Series/SesameStreet'' as well as a generic orange Muppet appear in the ''Scrubs'' episode "My ABC's". All within J.D.'s {{Imagine Spot}}s, of course. And in turn, said generic orange Muppet would later make a cameo in a season 40 episode of ''Sesame Street''; the scene in question doesn't mention ''Scrubs'' but it does implicitly alludes to it as its subject was x-rays.
** There was of course the ''[[TheMuppetShow Muppet Show]]'' episode where [[Franchise/StarWars Luke Skywalker, Chewbacca, C-3PO and R2-D2]] guest starred[[note]]Mind you, this was decades before the two franchises would wind up under [[Creator/{{Disney}} the same umbrella]] by chance[[/note]], alongside Mark Hamill, presented in the show as Luke's "cousin." (This is apparently regarded by Lucasfilm as an "Infinities"-level canon material, however.)
** ''Film/TheMuppetMovie'' featured Big Bird in a cameo in which he is journeying to New York in order to make it in public television, something that would be out of odds with ''Series/SesameStreet''[='=]s treatment of the character.
** Beaker is supposed to be related to {{WWE}} wrestler {{Sheamus}} according to the Monday Night Raw halloween broadcast.
* [[FamilyGuy Stewie Griffin]] on ''{{Bones}}'', via a [[spoiler: brain tumour induced]] hallucination.
* Creator/WoodyAllen's play ''God'' has as one of its characters Blanche [=DuBois=], who escaped the two men who were trying to put her into a straitjacket at the end of ''AStreetcarNamedDesire'' and wants desperately to get herself into a play where God exists.
* ''Film/KamenRiderG'' has a scene where [[Series/KamenRiderDecade Decade]] appears and calls in the other Heisei Riders to give G a pep talk. It's also a one-off special [[AffectionateParody Affectionately Parodying]] the entire ''Franchise/KamenRider'' franchise, so odds are it's not canon to any of the shows, especially considering the BigBad of ''G'' shows up in ''Decade'' as the BigBad of the [[Series/KamenRiderKabuto World of Kabuto]] arc with nary a reaction and G himself never appears in any crossover film gathering all Riders.
** There were also a series of shorts where the cast of ''Series/KamenRiderFourze'' met the cast of the anime ''CrayonShinChan''.
* A series of promotional shorts for ''TheHub'' had [[WesternAnimation/MyLittlePonyFriendshipIsMagic Pinkie Pie]] messing with Dan from DanVs.
* Did someone say promo? How about [[http://tvtropes.org/pmwiki/pmwiki.php/Creator/Nicktoons?from=Main.Nicktoons Nicktoon's]] [[https://www.youtube.com/watch?v=Y69U-9JWDz4 Summer Beach House]] from 2002? {{WesternAnimation/Rugrats}}, {{WesternAnimation/HeyArnold}}, [[WesternAnimation/SpongebobSquarepants Spongebob]], {{WesternAnimation/Rocket Power}}, [[WesternAnimation/TheWildThornberrys Wild Thornberrys]], [[ArtShift even]] [[http://tvtropes.org/pmwiki/pmwiki.php/WesternAnimation/TheAdventuresOfJimmyNeutronBoyGenius?from=Main.TheAdventuresOfJimmyNeutron Jimmy Neutron]].
* [[http://tvtropes.org/pmwiki/pmwiki.php/Creator/CartoonNetwork?from=Main.CartoonNetwork Cartoon Network]] has a lot of promos featuring odd crossovers. Favorites include several superheroes from different cartoons [[https://www.youtube.com/watch?v=-VXRHw9O754 going to a movie theatre]] and an even larger crossover taking place [[https://www.youtube.com/watch?v=VuqItc1rZGg in a cafeteria]].
* A [[http://www.youtube.com/watch?v=9elNqC8c38k promo]] for the Japanese DVD season sets of ''Series/{{House}}'' featured the title character teaming up with fellow DrJerk Manga/BlackJack.
* A [[http://www.youtube.com/watch?v=Skf1oDUgrw8 promo]] of ''VideoGame/DanballSenki'' features the main characters arriving at the club room of [[VideoGame/InazumaEleven Raimon football club]].
* In the same vein, there are a set of ''WesternAnimation/DespicableMe'' ads for Japan set in the ''VideoGame/InazumaEleven'' 'verse as seen [[http://www.youtube.com/watch?v=8IpP41RrN58 here]].
* The ''Manga/OnePiece X Manga/{{Toriko}}'' crossover manga and TV specials, the ''Manga/OnePiece'' and ''Franchise/DragonBall'' crossover, Cross Epoch, and the crossover special featuring all three.
* An [[http://www.youtube.com/watch?v=8KOghs-hX7g advert for Sky Movies]] cuts together multiple Bond {{car chase}}s to make them appear to be racing/chasing/killing off each other. Since canonically they're all supposed to be ''the same person''...
* The fourth season premier of ''WesternAnimation/{{Archer}}'' opens with what seems to be the eponymous restaurant of ''WesternAnimation/BobsBurgers'' with the Belcher family inside, Bob (who happens to have the same voice actor as Archer) included. [[spoiler:It turns out "Bob" ''was'' Archer, who was suffering from IdentityAmnesia for a few months. Apparently there is no real Bob here and Linda's kids were from another marriage.]]
* [[WesternAnimation/TheFairlyOddParents Cosmo and Wanda]] appear in an episode of ''Series/NedsDeclassifiedSchoolSurvivalGuide''. (Specifically, one of [[MrImagination Ned's]] {{Imagine Spot}}s)
* Progressive, an insurance company with plenty of advertisement, had an advertisement cross over with ''Franchise/SonicTheHedgehog'' of all characters! Sonic can be seen speeding around in the set as Flo tells him all the ways Sonic can save on his insurance. The scene even uses the invincibility and extra life themes from ''VideoGame/SonicTheHedgehog3'', leading to many late Sonic fans who found the songs on YouTube being surprised that the songs existed prior to the commercial.
* [[TheGrimAdventuresOfBillyAndMandy The Grim Adventures Of The]] [[CodenameKidsNextDoor Kids Next Door.]] It makes no sense for this to be {{Canon}} because both shows have had different versions of SantaClaus appear, so they can't have a SharedUniverse, although that could qualify as a SeriesContinuityError.
* ''InspectorGadget'' appeared in one episode of ''StuntDawgs''. It was a cameo and Sizzle told him he was in the wrong cartoon.
* A VideoGame and DigitalPinballTable example: In addition to the [[Franchise/SonicTheHedgehog titular hedgehog]], ''VideoGame/SonicPinballParty'' also features [[VideoGames/NightsIntoDreams [=NiGHTS=]]] and VideoGame/SambaDeAmigo, but the three characters never actually interact with each other.
* It's highly doubtful that ''VideoGame/ProfessorLaytonVSAceAttorney'' is canon to at least the ''Franchise/AceAttorney'' series. Specifically, [[spoiler:Maya makes a couple of references to events that happened just before she stopped being Phoenix's assistant, with no time for there to have been an extra adventure in between.]]
* The opening crawl for ''WesternAnimation/PhineasAndFerbStarWars'' flat out states that the special isn't canon (possibly for both franchises), so the audience should just relax and enjoy it.
* An older Sally and Doowee from ''WesternAnimation/SallyBollywood'' appear in an episode of ''Baskup Tony Parker'', but in that universe they're actors and ''Sally Bollywood'' was just a TV show.
* Ickis, Krumm and Oblina from ''WesternAnimation/AaahhRealMonsters'' appeared in a ''{{WesternAnimation/Rugrats}}'' Halloween special as part of a dream sequence.
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