Cross Over: Western Animation

  • Back in 1972, The ABC Saturday Superstar Movie anthology series featured Looney Tunes characters in a Filmation production, Daffy Duck and Porky Pig Meet the Groovie Goolies — an atypical crossover of characters from different animation studios. (Consider that veteran WB animators, such as Ted Bonnicksen, Virgil Ross, and Norm McCabe, were all working at Filmation at the time.)
  • Ace Ventura and The Mask crossed over on two episodes: the final episode of The Mask ("The Aceman Cometh") and the last episode of Ace Ventura's second season ("Have Mask, Will Travel").
  • Finn and Jake appeared on an episode of Futurama.
  • Alvin and the Chipmunks once had a crossover with... Alvin and the Chipmunks. Or rather, the 1980s cartoon chipmunks got to meet their 1960s counterparts in a manner involving time travel, similar to Turtles Forever.
  • The Batman: The Animated Series vs Pokémon promos on Kids' WB!. Part One and Two.
    • Several other promos running on Kids WB featured similar interactive crossovers among the block's various shows.
  • A Ben 10 and Generator Rex crossover titled Ben 10/Generator Rex: Heroes United aired on Cartoon Network during Thanksgiving 2011, as a "special, extended" episode of Generator Rex. A clip was shown at Comic-Con 2011, in which Ben is seen entering Rex's world through a portal, and is at first mistaken for an EVO.
    • The Ben 10: Omniverse epsiode "T.G.I.S." sees the title characters of The Secret Saturdays appear, teaming up with Ben and Rook. Unlike the crossover with Generator Rex, the team-up is presented as (as per Word of God by Jay Stephens, the creator of TSS) as them existing in the same universe.
  • The all-too-trippy anti-drug PSA Cartoon All-Stars to the Rescue?
  • Cartoon Network has done many promo spots for itself using odd and unusual crossovers such as Shaggy from Scooby-Doo and Droopy Dog discussing what they call The Pound Puppies in France while driving a (live-action) convertible in (live-action) L.A., ŕ la Pulp Fiction.
  • It seems that one of the animators that exist in The Cleveland Show created an animated version of a Na'vi from Avatar.
  • The Simpsons is confirmed to have had crossovers with Family Guy and Futurama.
    • The Family Guy episode The Simpson Guy has the Griffins go on a road trip and end up in Springfield, where they meet and befriend the Simpsons. Then Homer and Peter start a fight (a la Giant Chicken) over which beer is better and nearly destroy Springfield.
  • A crossover of Darkwing Duck with Chip 'n Dale Rescue Rangers was planned but was never produced beyond a few voices. A quick clip of these voices can be heard in the Darkwing episode "Twitching Channels".
    • Darkwing Duck did have DuckTales' Gizmoduck as a recurring character. though.
      • And in one episode, the entire recurring villain cast from DuckTales showed up in one scene.
    • Also in the same vein, Hercules crossed over with Aladdin: The Series.
    • Pepper Ann is the only animated Disney television show to ever be covered in House of Mouse.
  • Dexter's Laboratory, Justice Friends and Monkey with each other, but also one episode with Dynomutt Dog Wonder.
    • To the best of my knowledge The Powerpuff Girls have never crossed over with Dexter's Laboratory, but they apparently exist in the same universe (since Major Glory and several of the Justice Friends have appeared in both).
  • Eek The Cat, it would seem, shares a universe with The X-Files; the episode "Eek Space 9" features cameos by Mulder and Scully (several years before The Simpsons) - an alien ship crashes into Scully's office and she screams that he was right all along (an accurate prediction of how her character turned out on the live-action show)! And yes, they are voiced by Mr. Duchovny and Miss Anderson, which makes it even funnier.
  • The Fairly OddParents and The Adventures of Jimmy Neutron crossed over three times in the Jimmy Timmy Power Hour Trilogy. This was an interesting exercise because one show is Thick-Line Animation while the other is computer-generated, requiring the characters to be re-animated in the appropriate style while in the "other" show's universe.
  • Seth Mac Farlane's Family Guy, American Dad!, and The Cleveland Show have had characters make occasional appearances, but the first true crossover among them is Night of the Hurricane, in which Hurricane Flozell affects all three shows and the actual "crossing over" occurs after the hurricane when Cleveland Brown, Stan Smith and Peter Griffin get involved in a stand-off.
  • Freakazoid!, Animaniacs, and Pinky and the Brain did a crossover in this clip.
    • Animaniacs sometimes did crossovers with other cartoons on its show, including one incident where Batman rescued them from an angry fairy (as Yakko's Shakespeare recital had foretold). Coincidentally, Batman: The Animated Series aired right afterward.
      • One Animaniacs episode featured internal crossovers, with Dot and Slappy Squirrel trading places, as well as shorts featuring Mindy and the Brain, Pinky and the Cat (Rita), and Pesto and Runt.
      • And sometimes characters from Tiny Toon Adventures would show up for a cameo or guest appearance.
  • It was a bit more subtle than most of these examples, but G.I. Joe crossed over with The Transformers in the episode "Only Human". A masked character named "Old Snake" (voiced by Chris Latta) helps the Big Bad of the week with a machine to put Transformers' minds into synthetic human bodies. After the plan inevitably fails, Old Snake escapes and idly muses that "they just don't make terrorists like they used to", then raises his arms and yells "COBRAAAAAA!", ending in a coughing fit.
    • At the time the episode aired, it initially had a hard time fitting in with the events of G.I. Joe: The Movie, where Cobra Commander was transformed into an humanoid yellow cobra-man and then finally doomed to a fate as an actual non-anthropomorphic cobra. However in "Only Human", Cobra Commander is obviously humanoid and visible from his torn-up gloves are hands covered in yellow scales; presumably in reference to when he was transformed into a yellow-scaled snake man in the movie. Through what was likely coincidence, this seemingly erroneous depiction of a future Cobra Commander was later made to make sense: In 1989 (three years after "Only Human" originally aired), DiC produced a continuation of the G.I. Joe animated series, beginning with the five-part mini-series "Operation: Dragonfire". In this mini-series, Cobra Commander is still just a snake, but he's eventually returned into a humanoid form (specifically the snake-man form) by the Baroness.
    • And from the same season, recurring character Marissa Faireborne was obviously the daughter of Flint (Dashiell R. Faireborne) and Lady Jaye. The DVD commentary for Transformers: The Movie finally admitted this officially.
      • One "cameo" was made when a hologram version of an aged Flint was used in order to trick Marissa in one episode.
    • In a more meta case, all of Marvel/Sunbow's cartoons of The Eighties (Transformers, G.I. Joe, Inhumanoids, Jem etc.) were tied into each other via Hector Ramirez, an Expy of television reporter Geraldo Rivera. Hector would show up just about any time a story needed a television reporter, suggesting the shows all resided in a shared universe.
  • "The Grim Adventures of the KND" was really more of a Kids Next Door episode with Billy and Mandy characters, but many plot points rely on the main characters of the latter (such as the Applied Phlebotinum). There were also many a Shout-Out to other Cartoon Network original properties, including a brief Art Shift to the world of Ed, Edd n Eddy.
    • Fred Flintstone made a guest appearance in an episode of The Grim Adventures of Billy & Mandy strangely enough, though no one ever referred to him by name.
    • He was referred to as "Jake Steele!" and spoke only in "Yabba dabbas". That is, until the end of the episode.
    • In the same light, Yogi Bear, Boo Boo, and Scooby-Doo showed up in GABM as well.
  • Hanna-Barbera did this a lot. Scooby-Doo was usually the host show. Other Hanna-Barbera examples are Laff-A-Lympics and Yogi's Gang.
    • The Jetsons Meet the Flintstones was one of the few movies they did of this.
    • Perhaps the most notorious use of this was Scooby-Doo in Arabian Nights.
    • There was a multi-episode arc of Space Ghost where the title character went up against the Council of Doom, each of whom managed to defeat Space Ghost and banish him to some other realm/time/planet, just so the other Hanna-Barbera heroes of that setting could help save him. This allowed Space Ghost to team up with the Herculoids, Mightor, Shazzan, and Super Moby Dick.
    • The 1981/82 Hanna-Barbera show Space Stars was also built around this trope. Each hourlong episode would have a short eight- to 10-minute segment starring one of the show's hero teams: Space Ghost, The Herculoids, the Teen Force, and Astro from The Jetsons. The last five to 10 minutes of the show would then be a "Space Stars Finale" team-up between two or more of the groups against a common foe.
    • Johnny Bravo, "Bravo-Dooby-Doo": Johnny hitches a ride with the cast of Scooby-Doo, Where Are You! to his great-aunt's mansion. There they solve a mystery, all while poking some fun at the odder quirks of Scooby-Doo. At the end, Speed Buggy shows up.
      • A later episode has a past incarnation of Johnny meeting Fred Flintstone.
      • The later seasons had a lot of episodes revolving around Johnny meeting other cartoon characters. Blue Falcon, Huckleberry Hound, "Weird Al" Yankovic...
    • Yogi Bear and Boo Boo once turned up in a Flintstones episode. Apparently, those bears are really, really old. Or able to time-travel. Or both.
    • A rare live-action to animation crossover took place on The Flintstones when Samantha and Darrin moved in next door (both series aired on ABC, and Bewitched was made by The Flintstones's (then) distributor Screen Gems). How old is Samantha, anyway?
      • And, as a bonus, Hanna-Barbera animated the opening titles for Bewitched and reused the characters designs for their stone-age counterparts.
    • Ironically averted with several of the later Flintstone shows, such as Fred and Barney Meet the Thing. They never actually met, it was just some Flintstone shorts mixed with shorts that featured a teenage version of the Thing.
  • Harvey Birdman, Attorney at Law is nearly built around this trope. Most episodes involved Harvey's law firm taking the case of some 1960s or 1970s Hanna-Barbera cartoon character.
  • He-Man and She-Ra did this more than once, as special episodes. Made sense, since they were siblings, but every time it happened it was a big deal. The two would do their transformation sequences simultaneously, making for a doubly psych-up scene. Strangelynote  though, despite being in the same place at the time, they would then each appear in front of their respective castles, which were located in different countries.
  • The show House of Mouse was all about Disney animated characters going to the house to watch various acts.
  • Inspector Gadget once paid a visit to the live-action half of The The Super Mario Bros. Super Show, played by a svelte young Maurice LaMarche.
  • Lilo & Stitch: The Series had four episodes crossing over with another Disney series each - one for Kim Possible, Recess, American Dragon Jake Long, and The Proud Family.
  • Additionally, the Looney Tunes characters made several guest cameos on Animaniacs and Histeria.
    • Buddy, the failed successor to Bosko, appeared in The Warners 65th Anniversary Special.
    • Bosko himself and his girlfriend, Honey were the subject of the Tiny Toon Adventures episode "Field of Honey" and let's not forget the lesser known characters of Foxy, Roxy, and Goopy being the focus of another
    • Which is wasn't unusual for Tiny Toons since the whole plot of the show is the main characters are the proteges of famous "Looney Tunes" characters.
  • Rankin/Bass Productions did it with Rudolph and Frosty's Christmas in July, combining Rudolph with Frosty the Snowman, Frosty's Winter Wonderland, Rudolph's Shiny New Year, and it appears that Santa Claus Is Comin' to Town and The Year Without a Santa Claus may figure in, but mostly in dialogue references rather than character appearances. Strangely, there were never any crossovers with characters from the original Rudolph the Red-Nosed Reindeer special — they only appeared again in Rudolph and the Island of Misfit Toys.
  • Rugrats and The Wild Thornberrys had a feature-film crossover.
  • Building on the Scooby example above, the 14th episode of Scooby-Doo! Mystery Incorporated had Scooby team up with Captain Caveman, Jabberjaw, The Funky Phantom, and Speed Buggy in an Affectionate Parody of old Hanna-Barbera cartoons.
    • Blue Falcon, Dynomutt, Benton Quest, Race Bannon, and the cast of the 1967 Moby Dick cartoon also appeared.
  • Matt Groening's shows The Simpsons and Futurama tend to cross over for brief instances, including in the futuristic Simpsons episode "Future Drama".
    [Homer and Bart accidentally pick up Bender of Futurama while driving through a portal tunnel]
    Bender: Oh boy! You guys are gonna be my best friends, right?
    Homer: You wish, loser!
    [Throws Bender out the car.]
    • Then there was the time The Simpsons crossed over with The Critic, which Matt Groening was against since The Critic has a completely different style and therefore did not have Groening's involvement. Because of this, Groening's name is not shown in the credits for "A Star is Burns" (making it the only instance that this has happened). However, Jay Sherman made cameos in two other episodes that did have Groening's name in the credits.
    • And one of the show's couch gags featured the Simpsons meeting their Tracey Ullman Show counterparts sitting on the sofa.
      • The most recent Treehouse of Horror did this directly, with the Tracey Ullman Show counterparts appearing as ghosts. Furthermore, at the end of the segment, various versions of the Simpsons appear, including anime counterparts which parody One Piece, Bleach, Naruto, Attack on Titan, Pokémon, and Spirited Away. Other ones include Lego characters and Minions from Despicable Me.
    • Another couch gag had the Simpsons arrive on the couch via tubes right out of Futurama; Fry briefly appeared from a sixth tube before being sucked back in.
  • South Park did a Cartoon Crossover where Mr. Garrison sought therapy from Dr. Katz.
    • Interestingly, MAD did the very same crossover earlier.
    • Also the "Imaginationland" trilogy could also be considered something of a massive crossover as well.
    • Bart Simpson of The Simpsons appears in the two-part "Cartoon Wars". There are even references to his series, including mentioning that he stole the head off a statue once (a reference to the episode "The Telltale Head" and him saying "Cowabunga!" (in The Simpsons episode "Behind the Laughter", Bart, after a sketch written by Homer in which Bart has the line "Cowabunga!", remarks with irritation that he's never said "Cowabunga" in his life).
  • The Disney Junior preschool shows Special Agent Oso and Handy Manny had a crossover called "The Manny with the Golden Bear," in which Oso called in Handy Manny when he had to help a kid who had a broken bike.
  • Spider-Man: The Animated Series had a crossover with the 90's X-Men animated series. It was considered a big deal because it was a completely different animation studio involving the then current roster from X-Men in a show that was not their own. Even more impressive was the effort put in to keeping all the same cast (save for one, Gambit, presumably for contractual or scheduling reasons) for the sake of continuity. Even more fun, the crossover remains in continuity for Spider-Man, as Storm returns during the series' adaptation of the Secret Wars crossover event.
    • Robert Hays also reprised his role from Iron Man in several episodes.
      • The Marvel cartoons from around this era were frequently cameo-ing in each other's series, as well (though it's hard to know whether they were the same characters as the other cartoons; they all take place in a Marvel Universe, where a Spider-Man, Human Torch, etc. would likely exist somewhere.) You never know who'll be briefly shown watching from a rooftop, or looking up at the Pillar of Light in the distance when something really big goes down. Also, Iron Man, Fantastic Four, Incredible Hulk, etc. guest starred in each other's shows often enough to make the 90s Marvel cartoons a Diniverse of sorts - you can connect the dots through all of them.
  • An arc of Street Sharks dealt with them teaming up with the Extreme Dinosaurs.
  • Superman had three crossovers with Batman: The Animated Series, confirming the existence of the DCAU.
    • The season two three-part episode "World's Finest," which featured characters from Batman traveling to Metropolis.
    • The season three episode "Knight Time," in which Superman teams up with Robin (Tim Drake) to hunt down a missing Batman.
    • The season four episode "The Demon Reborn" in which Batman and Superman team-up to fight Ra's Al Ghul.
  • The 1987, 2003, and original comic book versions of the Teenage Mutant Ninja Turtles, in Turtles Forever.
  • Tiny Toon Adventures was also in this same mold (considering both shows were from the same producer, Steven Spielberg). In fact, some Animaniacs characters made quick cameos in the two prime-time Tiny Toons specials in 1994.
    • In the Tiny Toons direct-to-video movie How I Spent My Summer Vacation, Buster and Babs are saved from a fall by Superman. The Bunnies promptly told the Man of Steel to get his own video.
    • The episode "Fields of Honey" featured the forgotten Looney Tunes duo Bosko and Honey.
  • The Venture Bros. started off as a parody of Jonny Quest. Eventually, characters from Jonny Quest started showing up on the show... or at least demented versions of them.
  • Victor & Hugo - Bunglers in Crime - Many times, either in reference or in guest stars. Count Duckula, Igor, Nanny, Hawkeye Soames and Dr. Potson (from Count Duckula), Danger Mouse, Colonel K, Baron Greenback, Nero and Stiletto (from Danger Mouse) and even a nod to Badger from 'Wind in the Willows. It seems fitting, since Victor & Hugo were a spin-off from Count Duckula, who in turn spun off from Danger Mouse.
  • An episode of The Zeta Project crossed over with Batman Beyond, justified in this case as the former was a spinoff of the latter. (Due to Bob Kane's contractual billing being what it is, this is also the only episode where the opening titles omit the "Created by Robert Goodman" credit - the end credits specify Kane's being behind Batman, with Goodman being behind the characters for the spinoff.)