Fake Crossover

"Don't worry, bro, none of this is canon."

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 actually 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: Massive Multiplayer Crossover and Comic Relief.


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  • Progressive, an insurance company with plenty of advertisement, had an advertisement cross over with Sonic the Hedgehog 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 Sonic the Hedgehog 3, leading to many late Sonic fans who found the songs on YouTube being surprised that the songs existed prior to the commercial.

    Anime and Manga 
  • Plue is a summon that Lucy uses in Fairy Tail who originated from Rave Master.
    • Griff showed up on the cover of Volume 6 of Fairy Tail. He also pops up when Wendy is being welcomed into Fairy Tail and in Episode 21 (Happy is eating him while they're at Lucy's house).
    • A character from Plue's Dog Diaries is in the trash can in one of the omake.
    • Elie is amidst the crowd fleeing the train station in the Lullaby arc. She even has her weapon out.
    • In Yajima's restaurant, there's a man dressed like Ruby who has his same verbal tic: poyo!
    • The anime sees the return of the Jiggle Butt Gang (a.k.a., the Big Butt Bandits).
    • The beach omake not only has Elie and Julia in it, but Ship Tease for Belnika/Musica, which was quickly shoved aside in Rave Master in order to deal with the final battle.
    • Aside from characters from Rave Master making cameos in Fairy Tail, several names are used in both series. Etherion, Oración Seis, and the Ten Commandments just to name a few...
  • The Lupin III vs. Detective Conan special and movie can't really take place in the same universe as the two series. Not only has Lupin been mentioned as a fictional character in one of the Detective Conan films, but Sherlock Holmes was a real-life person in Lupin's series, yet is still a fictional character in Conan's.
  • The One Piece X Toriko crossover manga and TV specials, the One Piece and Dragon Ball crossover, Cross Epoch, and the crossover special featuring all three. Interestingly, in the Super Collaboration Special, Luffy and Toriko recognize each other from their past meetings but have no idea who Goku is.

    Comic Books 
  • Most crossovers between Marvel and 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 Batman/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? Archie Meets the Punisher, which also Sequel Hooked it.
    • Another lampshade happens in the first Batman/Spider-Man crossover. Spidey mentions his allies the Avengers and the Fantastic Four, then says he keeps waiting for Superman to call him, then is cut off because Batman seems to take slight offense at that.
    • It used to be a roughly-annual tradition, back in the 70's, for both the Justice League and The Avengers 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 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 Guiding Light 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 Extreme Justice showed Blue Beetle stopping a villain using a sticky web substance. He proudly mentioned picking it up from a guy who recently visited from another universe. This earns extra in-joke points because they're both bug-influenced heroes co-created by Steve Ditko.
    • 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.
  • There were a few X-Men + Star Trek: The Next Generation comic crossovers, which is Hilarious in Hindsight thanks to Patrick Stewart.
    • These were followed by Star Trek: The Next Generation/Doctor Who: Assimilation˛, 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 Doctor Who Expanded Universe would qualify as, though the mini-sode "Night of the Doctor" averts that with the Eighth Doctor on screen name-dropping his expanded universe companions)
  • There was, actually, a crossover between Donald Duck and Tintin, entitled Freedom of Art (it hasn't been printed in the U.S. yet, and might never be). However, the current owners of the copyright to Hergé's characters threatened to sue Disney, leading them to slightly tweak the characters' names (Tintin became Denden, Haddock became “Hadciuk”…) and market it as a mere tribute.
  • Topps' Jason vs. Leatherface crossover, taking place after Friday the 13th Part VI: Jason Lives, is an Alternate Continuity, as it features characters who are either deceased or have different names in their own stories.
  • NBC Saturday Morning Comics #1 has characters from several shows appearing together on the cover, but they are all self-contained stories.
  • The G.I. Joe comics had two in-continuity crossovers with The Transformers 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 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: [1] 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 [2]
    • Similarly, an early issue of The Transformers 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 Godzilla's 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.
  • "Into the Great Unknown" is a Star Wars and Indiana Jones crossover where the Millenium Falcon crash-lands on Indie's homeworld and he finds a very familiar-looking fellow inside, dead.

    Films — Animation 
  • In Wreck-It Ralph, video game characters are like electronic Living Toys local to Litwak's Family Fun Center arcade. In theory, more than one of the same arcade cabinet at the same location would produce duplicate characters.

    Films — Live-Action 
  • Martial Arts Movie titles may imply a crossover, such as Kung Fu Masters: Jackie Chan vs. Bruce Lee, Bruce Lee vs. Jackie Chan, or Jackie Chan vs. Jet Lee; these are collections of separate movies. Movies like Cinema of Vengeance, Top Fighter and The Deadliest Art may claim to be starring all of the main actors featured on the cover, but are actually documentaries full of Stock Footage interviews and movie clips.
  • An advert for Sky Movies cuts together multiple James Bond car chases to make them appear to be racing/chasing/killing off each other. Since canonically they're all supposed to be the same person...
  • In Pixels, the video game characters are not part of a crossover, as they are aliens appearing as video game characters.
  • Kamen Rider G has a scene where Decade appears and calls in the other Heisei Riders to give G a pep talk. It's also a one-off special Affectionately Parodying the entire Kamen Rider franchise, so odds are it's not canon to any of the shows, especially considering the Big Bad of G shows up in Decade as the Big Bad of the World of Kabuto arc with nary a reaction and G himself never appears in any crossover film gathering all Riders.
    • Both Kamen Rider Den-O and Kamen Rider Fourze have met the cast of Crayon Shin-chan; the former has Shinnosuke transforming into Kamen Rider Shin-O with the power of the Three-Assed Pig Imagin, while in the latter he turns into an Astro Switch that lets Fourze undergo a Toon Transformation.
    • In regards to Kamen Rider as a whole, the annual Movie Wars films tend to fit this trope when it comes to the current show (for the cast of the previous show, it tends to be a Postscript Movie or more rarely a Grand Finale). The Rider will gain some kind of movie-exclusive Super Mode or item that never turns up in the series proper, and they'll never think to ask the Riders they met before for help when things start looking bad later in their own series. In a few cases, the movie completely clashes with the series' continuity or the characters' established personalities (the biggest offender being Kamen Rider OOO's portion of Movie Wars Core). Kamen Rider Fourze is a rare exception to this as Fourze does use the Super Mode he gained in Movie Wars Megamax later on in the series.

    Live-Action TV 
  • The charity special "Dimensions in Time" was a Doctor Who/EastEnders crossover. Since the shows have since been shown as Mutually Fictional, it's probably fair to say it never happened. (And before the new Doctor Who series established it as such, the tie-in novel First Frontier wrote it off as All Just a Dream).
  • A promo for the Japanese DVD season sets of House featured the title character teaming up with fellow Dr. Jerk Black Jack.
  • One of the sweeter crossover yet not-a-crossover moments occurred on I Love Lucy. 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. Maybe it WAS a crossover?
  • Monk and several of the USA Network shows including The 4400 and 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.
    • USA loves doing this:
      • The campaign leading up to the premiere of In Plain Sight 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 WWE wrestler The Big Show bringing Mary a gift wrapped folding chair, then being denied access to her bathroom.
      • Similarly, in one ad for Royal Pains, 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 White Collar have started appearing in these as well - they have done crossover commercials with Psych, WWE Raw (the Big Show again) and Burn Notice.
      • 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 (Burn Notice, Psych, In Plain Sight, Royal Pains, WWE Raw, Law & Order: Criminal Intent) give their opinions and recount their experiences with the titular detective.
      • In the series finale of Psych, Shawn goes to San Francisco to be with Juliet and Gus follows. While the Chief is happy to see them, she mentions they already have a consultant who is implied to be Monk (said consultant is said to be "in the kitchen, alphabetizing the cereal boxes"), making this more interesting.
    • The commercials for Hellboy II: The Golden Army did the same thing, with Big Red meeting up with James Lipton, Chuck, appearing on Ghost Hunters and American Gladiators 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, appears in one of the ads, even though he wasn't on an ABC show at the time. His 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...although he did appear throughout the final season.
  • The Muppets are prone to this:
    • The Cosby Show had an entire episode of a dream sequence, with the second half involving characters from The Jim Henson Hour.
    • Scrubs made a guest appearance in It's a Very Merry Muppet Christmas Movie, 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 Sesame Street as well as a generic orange Muppet appear in the Scrubs episode "My ABC's". All within J.D.'s Imagine Spots, 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 Muppet Show episode where Luke Skywalker, Chewbacca, C-3PO and R2-D2 guest starrednote , alongside Mark Hamill, presented in the show as Luke's "cousin." (This was apparently regarded by Lucasfilm as an "Infinities"-level canon material before the massive reorganization of Star Wars continuity.)
    • The Muppet Movie 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 Sesame Street's treatment of the character.
    • Beaker is supposed to be related to WWE wrestler Sheamus according to a Monday Night Raw Halloween broadcast.
  • One episode of Roseanne had Luke and Laura, of General Hospital, talking with Dan and Roseanne about the wacky adventures each couple had experienced throughout their respective marriages.
  • The Christmas episode of Father Ted featured the cast of the contemporary Irish comedy Ballykissangel. However, it was a dream sequence.

  • Avenue Q and Fiddler on the Roof 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.
  • Woody Allen'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 A Streetcar Named Desire and wants desperately to get herself into a play where God exists.

  • Teenage Mutant Ninja Turtles crossovers, including Star Trek: The Original Series, Universal Monsters, and Troll dolls, were typically the source material characters amalgamated with the four main turtles.
  • Transformers
    • The Animorphs crossover has characters turning into animals like in the source material, but it does not actually involve Transformers.
    • The G.I. Joe and the Transformers San Diego Comic-Con exclusives feature characters from both series. The sets are mostly commemorative instead of presenting a new story to justify the crossover.
    • The crossover with Star Wars features ships that turn into giant versions of Star Wars characters, fitting into continuity with your imagination.

    Video Games 
  • As a general rule, any game that has a Character Customization feature can allow for this. Special mention goes to the Mii series of games that, thanks to the simplistic yet surprisingly flexible system, and ease of sharing Miis to others systems, has a near uncountable amount of Miis based on characters from many, many franchises.
  • In Angry Birds Transformers, the Eggspark turns the birds and pigs into the Autobirds and Deceptihogs, so the Angry Birds characters are only playing as the Transformers characters.
  • The Battle Cats crossovers usually feature characters based on the source material instead of the actual characters.
  • PlayStation Move Heroes makes no sense when it comes to the Sly Cooper timeline. The most logical conclusion is that it takes place between the second and third games, since Bentley is using his hoverchair and Sly hasn't retired from heisting, but in the opening cutscene, they are trying to break Murray, who is supposed to be on a worldwide journey of enlightenment, out of prison.
  • Professor Layton vs. Phoenix Wright: Ace Attorney's special episodes couldn't possibly exist within the Ace Attorney timeline. Besides the fact that those episodes gleefully break the fourth wall, Maya uses Luke Atmey's Borrowed Catchphrase "Zvarri!" and Phoenix still clearly has his badge, so it can be concluded that the main events of the game must take place between Case 3-2 on October 11-14, 2018 and Phoenix's disbarment on April 19, 2019. While this gives ample time for the events in Labrynthia to take place, it's explicitly mentioned that the special episodes take place a year afterwards, putting them in late 2019 or early 2020. By this point, Phoenix is disbarred and Maya is off serving as the Master of the Fey clan, so there is no logical reason for the Ace Attorney characters to be in London at all.
  • A Video Game and Digital Pinball Table example: In addition to the titular hedgehog, Sonic Pinball Party also features NiGHTS and Samba de Amigo, but the three characters never actually interact with each other.
  • Do you really think Soul Edge or Soul Calibur will ever show up in the Star Wars, The Legend of Zelda, God of War or Imagenote  universes?
    • While the Soul series does share continuity with Tekken (Soul's Yoshimitsu is the ancestor of Tekken's Yoshimitsu), Heihachi's appearance in Soul Calibur II was not canon.
    • Actually, there is a Soul Calibur 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.
  • The "realness" of Nintendo Crossovers depends on where the franchises sit on the Sliding Scale of Seriousness Versus Silliness and it's possible for a crossover to be one-sided. Kid Icarus: Uprising and Metal Gear Solid are both games with very little regard for the fourth wall but only the former references the events of Super Smash Bros.. Kirby meeting Samus in Kirby's Dream Land 3 is a mandatory part of the game which needs to be done for 100% Completion, but it's unlikely the Metroid series will ever acknowledge Samus' alleged trip to Popstar. She also never slept in Peach's bed, but Mario seeing her and Link (Who most certainly did not join Mario, Yoshi, and the Kong family for a coin collecting competition) is canon, because everything in the Mario franchise is canon.
  • Mortal Kombat does this a lot too. None of the endings in Mortal Kombat vs. DC Universe make sense when applied to their respective worlds, and it has been confirmed as non-canon by Word of God. The same can be said of the Guest Fighters who appear in the later games (Kratos, and Freddy Krueger in Mortal Kombat 9 and Jason Voorhees, Predator, Leatherface, and the Alien in Mortal Kombat X; the explanations as to why these guys are Kombatants make little sense when their own canon histories are applied.
  • The events of "Mesal Gear Solid: Snake Escape" and "Snake vs. Monkey" are unlikely to be referenced in any future Metal Gear or Ape Escape game.
  • Basically any game in Capcom's Vs series (i.e: Marvel vs. Capcom, SNK vs. Capcom, Tatsunoko vs. Capcom). Actually, the Marvel vs. Capcom games (and their predecessors) take place in an official Marvel universe named "Earth-30847", completely separate from Earth-616 (AKA the main Marvel universe), so they're not technically Fake Crossovers on the Marvel side.
  • A promo of Danball Senki features the main characters arriving at the club room of Raimon football club.
  • Normally, one would expect Namco × Capcom, which uses a shared world concept, and it's followups the Endless Frontier and Project X Zone games would fall into this easily. And for most of the series' involved they do. Until Super Robot Wars Original Generation: The Moon Dwellers brought Endless Frontier's Haken Browning to the OG series, mentioning his meeting with Sanger Zonvolt in the first Project X Zone. This makes Nx C/PXZ's shared world an explicit part of the Super Robot Wars multiverse.
    • Similarly, the previous game also treated the appearances of three of it's characters in Another Century's Episode R as an actual disappearance that gets resolved in that game.
  • While Jacket as a character in Payday 2 is canon, the differing time-frames and Kill 'em All ending of the second game makes the events of his home series incompatible with that of Payday. This is in contrast to the rest of the guest characters, whose movies are implied to have "already happened" (or will happen in the case of Jimmy).
  • In Virtua Quest, the characters of Virtua Fighter exist as data in the Nexus, a virtual world.
  • Tokyo Mirage Sessions #FE was marketed as a Crossover between Shin Megami Tensei and Fire Emblem, but the closest the game comes to having SMT character in it is by having Jack Frost as the mascot of a store and a Black Frost mask. The FE cast are all mirages who hardly look like themselves and are essentially Personas who talk more than usual. The rest of the cast (which is what most of the plot that doesn't revolve around saving the world is about) is composed of Original Generation characters. At best, it's a Persona Game that plays it's mechanics to mimic the style of Fire Emblem with Personas and Shadows that (sort of) look and act like Fire Emblem characters.

    Web Original 

    Western Animation 
  • The Simpsons has done this innumerable times, such as:
    • Harry Morgan appeared as Bill Gannon.
    • David Duchovny and Gillian Anderson appeared as Mulder and Scully.
    • Patrick McGoohan appeared as Number 6 from The Prisoner.
    • In "Mathlete's Feat", Rick and Morty crash land into the couch gag, smooshing the Simpsons family. Morty travels to the future of Futurama in an attempt to undo the damage.
  • South Park
    • A more blatant example would be when Dr. Katz, Professional Therapist appeared in "Summer Sucks" and was incinerated by lava.
    • In "Super Best Friends", the cast of That's My Bush! is shown in the White House. While both shows were created by Trey Parker and Matt Stone, it still counts as fake since That's My Bush! is a live action show.
  • On The Venture Bros., Race Bannon from Jonny Quest 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 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 Hanna-Barbera — 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 Live-Action Adaptation of Jonny Quest currently in Development Hell, which forced the writers to be more subtle about who the characters really are by turning them into pastiches of the Quest cast.
  • Family Guy
    • A Deleted Scene in the episode "Movin' Out (Brian's Song)" involves Quagmire visiting The Simpsons. This one is not an official crossover like The Simpsons Guy.
    • As well as the American Dad! characters in "Lois Kills Stewie", which was all just a simulation.
    • 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.
    • Coach McGuirk from Home Movies appears at Mos Eisley cantina in "Blue Harvest."
  • Greg Weisman (creator of Gargoyles, The Spectacular Spider-Man and Young Justice) staged several radio plays for cons that were crossovers between his three shows. Naturally, it falls under this trope.
  • Stewie Griffin on Bones, via a brain tumour induced hallucination.
  • A series of promotional shorts for The Hub had Pinkie Pie messing with Dan from Dan Vs. Other shorts included the Transformers, Strawberry Shortcake, the Pound Puppies, and even Batman.
  • Did someone say promo? How about Nicktoons' Summer Beach House from 2002? Rugrats, Hey Arnold!, SpongeBob, Rocket Power, The Wild Thornberrys, and Jimmy Neutron.
  • Cartoon Network has a lot of promos featuring odd crossovers. Favorites include several superheroes from different cartoons going to a movie theater and an even larger crossover taking place in a cafeteria.
  • In the same vein, there are a set of Despicable Me ads for Japan set in the Inazuma Eleven 'verse as seen here.
  • Cosmo and Wanda appear in an episode of Ned's Declassified School Survival Guide. (Specifically, one of Ned's Imagine Spots)
  • The fourth season premier of Archer opens with what seems to be the eponymous restaurant of Bob's Burgers with the Belcher family inside, Bob (who happens to have the same voice actor as Archer) included. It turns out "Bob" was Archer, who was suffering from Identity Amnesia for a few months. Apparently there is no real Bob here and Linda's kids were from another marriage.
  • Oddly enough, this was averted by The Grim Adventures of the Kids Next Door. It was given a place in the continuity heavy Kids Next Door by its creator Tom Warburton, who placed the events of the special sometime after Operation: ZERO. In contrast, when asked about the canon status of this and the CN Invaded special for Billy & Mandy, Maxwell Atoms pointed out his show's far more casual relationship with continuity by jokingly stating "The only parts that are truly canon are the ones where a main character dies, is banished to another dimension forever, is erased from existence, or is turned into chocolate and devours himself."
  • Inspector Gadget appeared in one episode of Stunt Dawgs. It was a cameo and Sizzle told him he was in the wrong cartoon.
  • Phineas and Ferb:
    • The opening crawl for Phineas and Ferb: Star Wars flat out states that the special isn't canon for both franchises, so the audience should just relax and enjoy it.
    • Whether their crossover with the Marvel universe is canon or not is also debatable, and it's never referenced again in later episodes (though, a zany cartoon like Phineas and Ferb has only a loose sense of continuity at best, anyway).
  • An older Sally and Doowee from Sally Bollywood 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 Aaahh!!! Real Monsters appeared in a Rugrats Halloween special as part of a dream sequence.
  • The Steven Universe episode "Say Uncle" has the show crossover with, of all series, Uncle Grandpa. The page quote is from that very episode, with Uncle Grandpa assuring both Steven and the audience that "None of this is canon."
  • Ben 10: Omniverse and The Secret Saturdays had a crossover episode called "T.G.I.S."(Thank Goodness It's Saturday)", where they joined forces to stop Dr. Amino and a resurrected V.V. Argost from raising an army of chupacabras. This episode was made years after Secret Saturdays ended and had no involvement from any of that show's production staff, making the events of this episode dubious canoncity for that series.
  • The Flintstones had an episode in which Samantha and Darrin Stephens of Bewitched fame move to Bedrock. Their relocation from a 1960s suburb to a stone age town never received another reference in either show, as Bewitched still showed the couple living in the '60s afterward.
  • Cartoon All-Stars to the Rescue: A Massive Multiplayer Crossover wherein dozens of cartoon characters from various sources were brought together to make an anti-drug PSA. Obviously, this was completely separate from the canons of any of the source characters, as the various characters were seen coming alive from merchandise owned by the main character.
  • Mulder and Scully from The X-Files appear at the end of the Eek! The Cat episode "Eek Space 9", even being voiced by David Duchovny and Gillian Anderson. After a spaceship crashes into her office, Scully drops her skepticism of the existence of aliens, something that wouldn't happen on their own show for several years.