Massive Multiplayer Crossover / Fan Works

That is a lot of characters for one comic!

Fanfics:

A — L

• 101 Ways to Kill Jar Jar Binks has fictional characters from various horror franchises killing Jar-Jar Binks from the Star Wars prequel trilogy.
• A Is A uses Stargate Command as the vehicle to launch into the multiverse, including wizards, benders commandos, and teenagers.
• Abigail and the Rats of NIMH combines several 80's and 90's Mouse World cartoons (Once Upon a Forest, The Secret of NIMH, Chip 'n Dale: Rescue Rangers, and The Rescuers), which could at least in theory take place in a shared universe, with a little imagination. The adventure starts when scientists from NIMH, in search of the intelligent rats that escaped from their labs years ago, raid Dapplewood forest (the setting of Once Upon a Forest), and the story develops into a Crisis Crossover as the scientists become more aware of the mouse civilization that's been right under their noses.
• Adopted Displaced is about various My Little Pony: Friendship Is Magic characters getting sent different universes and being adpoted by characters from those worlds. Universes include Team Fortress 2, Ratchet & Clank, Sam & Max, God of War, Devil May Cry, DC Animated Universe, Iron Man, Metroid, Deadpool, Wreck-It Ralph, Mega Man (Classic) and Mega Man X, Avatar: The Last Airbender, Jak and Daxter, Jackie Chan Adventures, Sly Cooper, The Elder Scrolls, Portal, Mother, Star Fox, Red vs. Blue, and Despicable Me. Universes that are set to appear include Star Trek: The Next Generation, Final Fantasy IV, Dirty Pair Flash, Dragon Ball Z Abridged, Kid Icarus, and possibly, Gravity Falls, Darkstalkers, and Sword Art Online Abridged.
• The Adventure You'd Kill For was a roleplaying forum thread game, in which fictional murderers (and a handful of legitimate soldiers) are imprisoned together by supernatural jailers and forced to work together in order to escape. Characters included are the Corinthian, Sylar, the Fear, Naked Snake / Big Boss, Altair, and Beatrix Kiddo / The Bride. Belkar Bitterleaf, Dwight McCarthy, Johnny C., The Joker, Freddy Krueger, Sweeney Todd, Saruman the White, Hannibal Lecter, Bellatrix Lestrange, Geralt of Rivia, Leatherface, and many more. However a lapse in activity for several years led to it becoming an Orphaned Series.
• Advent Crossover Crisis, found here, combines over 30 pieces of fiction, although it kinda depends on how you slice it.
• Age of Heroes is a roleplaying campaign which starts with Marvel and DC which then crams in anything that can be fit in. Castlevania, Soul Calibur, Yu Yu Hakusho, and more. Now it might seem that such a campaign would collapse under its own weight, but it seems to be doing quite well.
• The Akane no Mai franchise consisted of Persona 5, Code Vein, Nioh and Kakegurui. However, it downplayed this trope as it mainly focuses on Persona 5 and Code Vein.
• All Worlds Alliance written by someonestupED is a series of fanfics stories which features an ensemble cast of characters that attends a place called the AWA Academy and at the same time, they go on adventures by traveling across the multiverse while fighting the forces of chaos.
• All Star Warzone is a massively compilation of fighting game movesets done for characters from...anything and everything. From games to literature, TV shows and webcomics...even notorious memes and people like Belle Delphine get sets of their own.
• The title team of ''THE AMASING SOOPR TEEM! includes Spider-Man, Splinter, Bumblebee, Godzilla, Dorothy Gale, the Minions, and a flying "super puppy". And in one chapter they go to Ninjago. If you think this sounds like something two little kids would make up... well, it is.
• The Anime X Marvel series revolves around various anime series having numerous elements from the Marvel Universe like the Marvel Cinematic Universe Spider-Man entering the Re:Zero Universe, Izuku Midoriya becoming Iron Man, Naruto Uzumaki becoming the apprentice of Doctor Strange or Tanjiro Kamado becoming the host to Venom.
• The fanfic Another World is a story about a boy (Or rather, the Author Avatar) that stranded on a world that is a big mashup of Terraria, My Little Pony: Friendship Is Magic, Pokémon, Bobobo-bo Bo-bobo, Sonic the Hedgehog, Super Mario Bros., Doctor Who, and Homestuck.
• Given the popularity of chat fics on Archive of Our Own, it seems inevitable that they'd mix with this trope sooner or later. Examples include Welcome to the Party Line!^note crossing over Ben 10, Danny Phantom, Star vs. the Forces of Evil, Steven Universe, Penn Zero: Part-Time Hero, Grossology, My Little Pony: Equestria Girls, and Miraculous Ladybug and Send Read Receipts^note  which crosses over the first four on the previous list, plus The Life and Times of Juniper Lee, Gravity Falls, Kim Possible, Generator Rex, American Dragon: Jake Long, The Secret Saturdays, and El Tigre: The Adventures of Manny Rivera.
• Arisugawa's Locket has a cast of "regulars" that includes characters from Revolutionary Girl Utena, Sailor Moon, Tenchi Muyo!, Excel♡Saga, Hand Maid May, The Vision of Escaflowne, and Ranma ½, and that list gets longer as the story goes on. The "guest stars" can come from, well, pretty much anywhere in the anime world, and on rare occasions, a live action show like Buffy the Vampire Slayer. The rampant crossing over is explained by the fact that Washu equipped the titular bar with a version of her Time and Space device, allowing it to exist over multiple dimensions.
• The Battle Fantasia Project, where the nationally televised attempted suicide of a magical girl reveals the existence of magic to the world, and the existence of magical girls to eachother. Includes Sailor Moon, Lyrical Nanoha (post-A's), Cardcaptor Sakura, Kämpfer, Puella Magi Madoka Magica all the Precures and others.
• Bearquarter2008 has made a couple of them.
  • Bearquarter's Toy Story trilogy stars Sherman Peabody as Sheriff Woody, Jimmy Neutron as Buzz Lightyear, Cindy Vortex as Jessie the Yodeling Cowgirl, Trent from Total Drama as Andy, Gumball Watterson as Mr. Potato Head, Toothless as Rex, Spongebob as Slinky, Mabel Pines as Bo Peep, Duncan as Sid, Vicki Kauaguchi as Bonnie, and has multiple characters in it as well.
  • Bearquarter 2008 is currently planting the seeds for his Crossover Event, "The Ultimate Infinity War", inspired by the Infinity Saga of the Marvel Cinematic Universe. His first fic, A Hero to Look Up To is the Stage setter for the saga.
• Be Wherever You Are is, first and foremost, a Steven Universe Human AU fanfic that also combines the likes of Fullmetal Alchemist, Arthur, and Spongebob Squarepants.
• Blood and Revolution is, originally and nominally, a Rurouni Kenshin story. It blossoms until it includes 15 other series, most notably Yu-Gi-Oh!, Inuyasha, and Cardcaptor Sakura.
• Both Syllables combines Invader Zim, Lilo & Stitch, and Buzz Lightyear of Star Command.
• The Bridge mixes together not just the titular Godzilla and My Little Pony: Friendship Is Magic series, but the world the kaiju characters come from is one huge amalgam timeline that includes Pacific Rim, Gamera, War of the Gargantuas, Cloverfield; and nearly a dozen lesser known kaiju properties such as Yonggary and Raiga. Equestria also has pony versions of characters from Sailor Moon.
• Bridges Burned uses this to offer Marinette a form of payback against her classmates after they all turn their backs on her. She starts by bringing Lois Lane by for a visit, exciting her former friend Alya, who idolizes her... only to introduce her to her friend Aurore instead. J. J. Abrams is the next to visit, and starts trying to recall Nino's name before she corrects him to Claude. One by one, she arranges for friends who didn't betray her to meet people her former friends idolize, both fictional and real-life figures, rewarding them with various life-changing opportunities, while those who betrayed her are forced to watch others live out their dreams.
• The massive Chicago Convergence includes characters from Another Fine Myth, Bolo, Buffy the Vampire Slayer, Charmed, Catch-22, Dark Angel, Diagnosis: Murder, Doctor Who, Due South, Early Edition, Forever Knight, Friday the 13th: The Series, Hammer's Slammers, Highlander, Indiana Jones, Knight Rider, Kung Fu: The Legend Continues, The Lord of the Rings, She-Wolf of London, MacGyver, Martial Law, MechWarrior, Men in Black, Murder, She Wrote, Nash Bridges, Kolchak: The Night Stalker, Quantum Leap, Quincy, M.E., Relic Hunter, Seven Days, Sliders, Space: Above and Beyond, Special Unit 2, Stargate SG-1, Star Wars, The Terminator, The Black Company, The Incredible Hulk, The Pretender, The Sentinel, The Wizard of Oz, Time Bandits, The Time Tunnel, The Transformers, Viper, Walker, Texas Ranger, and The X-Files all coming to Chicago. It manages to stay both coherent and hilarious.
• Cards of Remnant is an odd example. It's only a crossover between Yu-Gi-Oh! and RWBY, but the story includes elements from seemingly every Yu-Gi-Oh! series, even ones that were never directly connected in canon. Some Arc Welding is done to make them all fit together and fit within Remnant.
  • From Duel Monsters: The Three Legendary Dragons exist on Remnant, with Ozpin possessing Timaeus, and Amber having possessed Hermos before Cinder stole it. Various creation myths likewise revolve around the Egyptian Gods.
  • From GX: The Academies use the same student ranking system as Duel Academia, and the Signer Dragons are heavily implied to be related to the Light of Destruction.
  • From 5D's: The Signers and their associated Dragons exist here, with several members of Team STRQ being Signers, and Ruby herself possessing Aki's mark and Black Rose Dragon. Turbo Duels likewise exist, with both Yang and Pyrrha having D-Wheels, Yang's of course being Bumblebee. Nora's mother meanwhile possessed a Rune-Eye, with Nora now in possession of Thor, Lord of the Aesir.
  • From ZEXAL: The Number cards exist in Remnant, with Pyrrha possessing Number 86 and forging Number 101. Jaune meanwhile is a fan of the "Onomatopoeia Gang", based on Yuma's monsters, and takes on Yuma's role by partnering with Astral.
  • From ARC-V: Pendulum monsters are highly favored by Faunus duelists, the White Fang even possessing a member known as the "Odd-Eyes Bandit" due to their usage of a Performapal deck said duelist being Blake. The Four Dimensional Dragons also choose the members of Team RWBY to forge their cards, with Salem all but said to be desiring to revive Z-ARC.
  • From VRAINS: Atlas has pioneered Link Summoning, with Penny using Yusaku's deck, including Decode Talker and Cyberse Clock Dragon as her aces.
• Christian Humber Reloaded includes quite a few franchises, including Dragon Ball Z, BIONICLE, Final Fantasy, Kingdom Hearts, Inuyasha, StarCraft and more, typically by Vashblade visiting one of their worlds or acquiring a power featured in that series.
• Child of the Storm and its associated stories has Harry Potter and the Marvel Cinematic Universe for a basis, but swiftly mixes in elements of various versions of the Marvel Universe and DC Universe including Ultimate Marvel, The Sandman, X-Men: Evolution, X-Men Film Series, Smallville, The Dresden Files, Stargate SG-1, Merlin, and elements of The Lord of the Rings and Old Kingdom (the latter two described In-Universe as fiction based on reality).
  • And during the finale of Book I, reality is crumbling, leading to a few cameos from characters that are explicitly fictional In-Universe, including the 4th Doctor. Darcy promptly swipes his jelly-babies.
  • On top of all of this, it is Reference Overdosed, with shout outs galore to Doctor Who, Torchwood, Buffy the Vampire Slayer, Pacific Rim, The Princess Bride and many others abounding.
• Children of Time is, first and foremost, a Wholock series, but, as befits the Who side of things, it incorporates more than just those two 'verses. Sherlock Holmes in the 22nd Century eventually comes into play, providing us with the second season, Robin Hood makes guest appearances, and other 'verses are hinted at existing or are being saved up for future use.
• Citadel of the Heart did not start off as one of these, but eventually evolved into it over time. Originally starting off as a re-imagining of Pokémon Black and White with some elements of the anime, the first fic of the installments of Citadel Of The Heart is called Truth and Ideals. Due to how everything got started off, Citadel Of The Heart is currently the name of both the entire Crossover Fic and a planned Crisis Crossover planned later down the road. So far the currently uploaded stories are based on Digimon Adventure, Digimon Tamers, the aforementioned Pokémon Black and White, Dino Squad, Sword Art Online, and Code Lyoko, as well as having the author's original works being recycled and re-purposed for this giant continuity in the making, and so far also including small roles or cameos from future installments such as Custom Robo^note (Ray 01 cameoing in Truth and Ideals), RWBY^note (Grimm inspired Ultra Beasts appearing in the final arc of Truth and Ideals), Rampage^note (the three original monsters from the games appearing similar to their movie incarnations as special case mutations in DinoSquad RX), and Kingdom Hearts^note (What the author, as well as some of his friends, have drawn comparisons between Citadel Of The Heart in regards to other Massive Multiplayer Crossover media as a whole). A work in progress list of further installments can be found under the fic's timeline page.
• Collection Quest is gradually trucking toward this stage. Not only is Danny summoning characters from a number of worlds, but some very powerful beings from the various worlds are starting to notice when Vees pokes around their reality...
• Comes a Crossover is a mega parody of this trope. Various characters from all over culture, from anime, video games, comic books, and cartoons are all gathered together in the EQUESTRIA GIRLS world due to the walls of reality being broken down by a magical artifact. Characters are introduced in each chapter due to the ridiculous situation and their interactions help drive the plot forward as they try to figure out a way to fix reality and put everyone back where they belong.
• Due to The Multiverse being so intertwined into the lore and story of Communication, there are WAY TOO MANY franchises that are featured here to account for.
• Concept Road is an adventure spanning through many video game and anime universes with Shout Outs galore.
  • The strong point of the story seems to be the fact that the plot is written like an RPG complete with tutorial fights, side-quests, mob and boss battles, NPCs and appropriate BGM if you’re willing to go through the (actually simple) effort of opening them. (The AO3 version of the story has working hyperlinks).
  • A more detailed description can be found here.
• Convergence is another one, set on Babylon 5, from the late 90s. Politics and squabbling between the many authors eventually drove everyone away.
• The Conversion Bureau: The Other Side of the Spectrum takes My Little Pony: Friendship Is Magic, mixes it with the My Little Pony TV Specials, as well as having Mycroft Holmes, the Doctor, and the crew of GTAV on the heroes' faction. Moreover, Prime!Discord is also shown to be a Dimensional Traveler and uses the skills, weapons and likeness of the warriors he's met to help out the protagonists.
  • Its reboot, SPECTRUM, considerably dials down on the crossover aspect, preferring instead to intertwine the canon show and its supplemental materials along with the My Little Pony TV Specials.
• Coreline (a fanfiction and RPG setting). A computer virus has devastated the Earth. Earth is a multiversal battlefield. Real vs Fiction, canon vs. non-canon, various shows clashing against each other.
• CRISIS is notable for mainly being a Massive Multiplayer Crossover of Crossovers, with some unaltered franchises thrown into the fray. Franchises include Animorphs, Attack on Titan, Batman, Gamera, Godzilla, Foot Fall, Known Space, Superman, Warhammer 40,000, and Worm, to name some examples.
• Crossover Universe is a series on Archive of Our Own that has characters from Arthur, SpongeBob SquarePants, Scooby-Doo, Gravity Falls, Classic Disney Shorts, Kim Possible, Rick and Morty, Kingdom Hearts, and more, with Aku as the Big Bad.
• CrossWorld: Episode 1, by Hejin 57, a.k.a. Kareem Elamrani. Usually, a Massive Multiplayer Crossover will contain either anime or Western Animation, but this is one of the few exceptions. Crossworlds is an unfinished work containing, so far, characters from Dexter's Laboratory, Codename: Kids Next Door, Sonic the Hedgehog, The Nightmare Before Christmas, The Powerpuff Girls, Samurai Jack, and, of all things, Haruhi Suzumiya. It's about as cracky of an idea as one would expect.
  • The same author has also written Cross Chronicles, a more conventional Massive Multiplayer Crossover of Haruhi Suzumiya, Kenichi: The Mightiest Disciple, Tengen Toppa Gurren Lagann, Midori Days, and Fate/stay night. What's more, the fanfic itself is set in the universe of Valkyria Chronicles. Interestingly enough, even though the two fics are completely different, the same Plot Device is used to get all the different fandoms together in both of Hejin's Massive Multiplayer Crossovers.
• Crowns of the Kingdom is this for many, many Disney characters and all of the areas of Disneyland.
• Dairantou Saint Zearth is really shaping up to be one, Justified by a Rule of the Author's which states that any work of Fiction caught with a Trope Page is fair game to be added. Not including main components heirlooms and Bokurano there are also pilots from Kingdom Hearts, El Goonish Shive, and even Toy Story of all things! But it just doesn't end there, Negima!, Chobits, Bonus Stage, Inspector Gadget, and the City of Adventure most of this fanfic takes place in happens to be San Fransokyo, complete with a freakin' MgRonalds!
• Dance of Shiva, by John Biles, blends five classic anime — along with Crossover Cameos from and Shout Outs to at least a dozen other sources — to create a story that is by turns action-packed, comedic, and unabashedly mystical.
• Danny Phantom Rebirth is yet another Danny Phantom Massive Multiplayer Crossover webcomic.
• Dark Hearts is ostensibly an Alternate Universe Fic that's a crossover of Kingdom Hearts and Final Fantasy VII except for the fact that one of the main characters is also Dracula and we also have appearances from Sebastian Michaelis and Lionel Hutz, with more crossovers implied in future chapters.
• Dave Stdider Pokemon Traner takes any character from anything you've ever loved, throws their canon personalities out of the highest window of the Empire State Building, and puts them into the Pokémon world without any explanation whatsoever.
• Despite The Darkness I: A Tale After Tradgity [sic]: "A story on how the Darkness of ones imagination can be evil. It starts off as sounding like a sequel, but it is not. It is the first of it's series of books to come." Works involved in this crossover are EarthBound, Michael Jackson, Ed, Edd n Eddy, Mother 3, The Runaway Guys and Super Mario Bros. (Super Paper Mario, Super Mario World and Super Luigi Galaxy).
• Detsniy Off Skiword has fanfics that end up turning into this, either through characters, or just elements of the other series. Just for starters, his Kid Icarus fanfic ends up also being a fanfic of Left 4 Dead, Panty & Stocking with Garterbelt, Final Fantasy VII, Death Note, My Little Pony 'n Friends, My Little Pony (G3), Sailor Moon, Kingdom Hearts and Code Geass.
• DDM: Digimon and Duel Monsters blends elements and characters from Digimon, Yu-Gi-Oh!, Cardcaptor Sakura, and Pokémon into a single setting.
• The Dimensional Heroes features five groups, each made up of characters both from anime and video game series and created by the five authors collaborating, placing them into the events of video games and anime.
• One of the earliest well-known examples is 1981's "The Doctor and the Enterprise" by Jean Airey, which crosses Doctor Who and Star Trek: The Original Series when the Fourth Doctor's TARDIS materializes in the transporter room of the USS Enterprise on her way home at the end of her Five Year Mission, and they end up traveling to a barely-veiled Expy of Darkover.
• Doctor Who: The Manga starts with the Eleventh Doctor asking Trisha Elric to take in a little girl who is on the run from Providence who are working on recreating The Technology of the titular characters of Livewires to create an Army of Keyblade weilders, and that's just the first three pages...
• "Dragon Ball Xceed" is a massive multiplayer crossover fic with the potential to be the biggest because the author intends to EVENTUALLY cross it over with everything. At least everything he can get his hands on. All in one big as hell universe. But for starters it already crossed over Dragon Ball Z, Batman, Superman, The Mighty Thor, Puella Magi Madoka Magica, Yu-Gi-Oh! GX, Strike Witches, and Family Guy. Keep in mind that this fic is not written like normal fanfiction and is also about... 90% for comedy. In other words, this fic was mostly made for shits and giggles.
• Drawing the Line stars just about every animated character Stephen Colbert has ever played. Let's see—Stephen hires Stephen to sue Jon, who hires Stephen to defend him...
• Dreamwidth is host to an ever-increasing number of what are called multifandom roleplaying games. Some rewrite characters to fit new settings, but most are true Mega Crossovers, bringing characters together from their home canons. Drama Drama Duck, for instance, uses the premise that people from different universes are somehow able to communicate with each other over the Internet (including people who can travel between worlds, allowing characters to meet face to face). Individual games can have very different setups, genres, possible restrictions on acceptable characters or canons, and guidelines like the involvement of Original Characters or canon OCs.
• Dreamworld Paradox: A story where Ed, Double-D, Eddy, and Rolf as well as three Original Characters attend a massive high school and go on insane adventures. It is unknown what limit there will be to the characters but if there is a series, chances are a character from it will be appearing in some way.
• Ducktales: Twenty Years Later: A Continuation Fic for DuckTales (1987), but it also draws heavily on elements from The Disney Afternoon including TaleSpin, Darkwing Duck, The Three Caballeros and references to various comics, animated shorts. More importantly, it uses the timeline from The Life and Times of Scrooge McDuck to pinpoint where and when this takes place as a continuation.
• Earth's Alien History is a timeline on AlternateHistory.com dedicated to mixing together as many sci-fi franchises as possible into a coherent story. The count stand at one hundred and three involved at this point as of this writing.
• Eddward Wright: Ace Attorney is a crossover between Ed, Edd n Eddy, Ace Attorney... and Portal, that last one being explained by the author's previous crossover, Port-Ed 2. Adding to that, there's also the Recursive Fanfiction between the second and third stories with Turnabout Storm, which is itself an Intercontinuity Crossover between Ace Attorney and My Little Pony: Friendship Is Magic; thus making that four works being crossed over.
• The Elements of Harmony and the Savior of Worlds is a subtle example. In addition to Canon Welding the G1 My Little Pony show and Friendship is Magic, it's also established that the Earth of MLP is the same Earth as in Jem, Dungeons & Dragons (1983), and the original Transformers and G.I. Joe: A Real American Hero (Word of God refers to it as "Hasbro Earth"). As of the latest chapters, it's more direct, as official First Contact between Earth and Equestria has occurred. It's also shown in one of the side stories that the story incorporates the fan theory that Doctor Whooves is the Doctor, which brings that series in as well.
• The Emiya Clan is a forum community-created series of omakes/snippets based from Gabriel Blessing's In Flight, featuring a theoretical GOOD END to the story that involves the next generation of children resulting from the inevitable harem. There's easily over a dozen regular "authors" and even more regular forum goers who swap ideas and characterization analysis with each other. It involves a large cast^note the Clan has been crossed with (as of this writing): Devil May Cry, Digimon, Disgaea, Full Metal Panic!, Harry Potter, Hellsing, Negima! Magister Negi Magi, Lyrical Nanoha, Ouran Highschool Host Club, Persona, Pokémon, Ranma ½, Rosario + Vampire, Sailor Moon, Haruhi Suzumiya, A Certain Magical Index, Bunny Drop, Valkyria Chronicles and a few others... not including the Nasuverse and Sekirei elements already present in the fanfic it's based on, most of them Original Characters on which, of course, YMMV.
  • The forum itself has actually imposed upon itself a strict code of discipline and mutual convergence to root out wanderings, Fan Wank, or other forms of trope misuse. Because of the nature of the community, new authors are added regularly, but work quality and content is kept in line by a democratic system for new crossovers and ideas that will be accepted as {Canon}.
  • Currently the Clan features Shirou Emiya, 24 wives, and 28 children (Further additions have been capped at this number). This is not counting various relatives, family friends, and clientele that show up in the stories on a regular basis. Usually, each child gets their own crossover(s), while the entire family (or a part of it) may participate in a story sometimes.
  • A few of the authors have compiled their works here (many more stories have been added past this point).
• Emma Iveli is very fond of multi-crossovers. Such fics that invoke this trope are the The New Lives Saga (men from various anime being reincarnations of the Sailor Senshi), Harry Potter and the 7 Reincarnated Spirits (seven women from various anime are reincarnated in the Potterverse), and My Heroes Reborn (UA students as the reincarnations of characters from various franchises). As you can see, they almost always involve reincarnation.
• Empathy is a three-way crossover between Inside Out, Big Hero 6, and Home (2015), though in addition to those there are subtle references that suggest that other films (such as Despicable Me and The Incredibles) exist in the same universe as well.
• Eternal Flowers, is a very strange example. It is loosely set in the Chobits universe, connected to ×××HOLiC because of CLAMP. It also involves Negima! and Puella Magi Madoka Magica somehow...
  • It's actually a series. The accompanying stories are Bakamonogatari, Puella Magi Yuuko Magica, and the "crossroads" story that combines them all is called Parallel Souls.
• Eureka, A fanfic that contains Ranma 1/2 and Eureka at its core, works the idea that there's another division of "Eureka". Namely, there's the American Normal Science Branch, and the Japanese MAD Science Branch. In the end, it includes Ranma 1/2, Eureka, The Road To Cydonia, Dragon Ball Z, Chobits, Project A-ko, Tenchi, Neon Genesis Evangelion, Cooking Master Boy, Yu Yu Hakusho, Bleach, Kim Possible, Venture Brothers, Knight Sabers, Robotech, Naruto (Naruto is actually only acknowledged as a manga, but still helps the cast), All Purpose Cultural Catgirl Nuku Nuku, Pokemon, Dexter's Lab, Jimmy Newtron, Invader Zim, X-Com, Men in Black, Pinky and the Brain, Full Metal Panic, Power Puff Girls, My Life As A Teenage Robot, Marvel Comics, Stargate SG-1, Power Rangers, Sailor Moon, Dark Titans (a fanfic), Raiders of the Lost Ark, and Gundam as, usually, vague little references that you will miss unless you know that series/movie/setting. However, some of them also play larger roles, or more obvious appearances.
• EVA Sessions: Someplace Vast and Dry:
  • Ex-Navy SEAL and CIA operative-turned-mercenary William "Bill" Strannix gets hired by Kihl to kidnap Rei and her "Mermaid" sisters from the NERV Evangelion Center, and later, make an attempt on Shinji's life at the latter's safehouse in Detroit.
  • David Sarif is one of NERV's chief backers through his company Sarif Industries, and later dispatches Adam Jensen to help rescue Shinji and his bodyguard Hunter from a safehouse in Detriot under siege by SEELE-backed mercenaries
  • Daisuke Aramaki of the Public Security Bureau becomes the government agency version of Friend on the Force for Gendo, providing him with intelligence regarding SEELE activities and sending Motoko Kusanagi's team to help defuse a hostage situation at the NERV Evangelion Center
  • Arnold Rimmer cameos as a NERV technician who assists Naoko Akagi in starting up Unit-00 for the first time with Rei as its pilot.
  • Peter Bishop visits NERV as a representative of Massive Dynamic, another potential backer that Yui and Naoko are attempting to sway to their side over SEELE.
• Event Horizon: Storm of Magic is a crossover between A Song of Ice and Fire, The Lord of the Rings, Warhammer, and later on, The Legend of Korra, all of which are planets in a single star system located in an original sci-fi universe set 20 Minutes into the Future (and it's heavily implied that The Company™ is the megacorp from Avatar.)
• The Fandom Wars is a standard example of a Mega Crossover, though it concentrates almost entirely on the two factions of the My Little Pony: Friendship Is Magic world, whom are being internally manipulated into participating in the War that they didn't want to join in the first place, and the Anime Faction, one of the 'Big Three' major military powers and most likely (at least at first) to win. The series can be found in four parts. Be warned that it is very middle-tier.
• Fantastic Foxes of Zootopia does something similar to Take a Stand, taking numerous animal-based intellectual properties and mixing them into the world of Zootopia. A major difference is that unlike Take a Stand, Fantastic Foxes doesn't limit itself to Disney franchises; other than Zootopia, the characters that get the most focus hail from Fantastic Mr. Fox and Aggretsuko.
• Fate/stay night and its various spin-offs have practically become a breeding ground for MassiveMultiplayerCrossovers, usually in the form of which non-canonical Servant can kick another non-canonical Servant's ass. Fate/Zero Sense, Fate: Zero Sanity, their sequels and countless other ones have put nearly every possible match-up imaginable together.
• Fictionalization IV, a Game Mod for Civilization IV, does this for pretty much all of fiction. Dracula's armies of toy soldiers Vs. Dr. Doom's flying saucer? HELL YEAH!
• The Fictional ISOT Map Game series on Alternate History.com. Each game features many nations from different fictional sources.
  • The 1st Game had Code Geass, Harry Potter, Transformers, Star Wars, Timeline-191, Fallout, Rome: Total War, Age of Empires III, A Colder War, Monty Python's Life of Brian, Warhammer, The Draka, Worldwar, World War Z, District 9, Avatar, and Game of Thrones.
  • Game 2 had Futurama, Indiana Jones, Leviathan, Halo, Doctor Who, Warhammer and Warhammer 40,000, Timeline-191, Worldwar, Fatherland, The Lord of the Rings, Ruled Britannia, Boneshaker, DC and Marvel comics, Star Wars, Dinotopia, Anno Dracula, Rocky and Bullwinkle, Avatar: The Last Airbender, Team Fortress 2, and Joe Steele.
  • The third game had World War Z, Red Dawn (1984), Romance of the Three Kingdoms, Warhammer 40,000, Harry Potter, Dragon Ball, Marvel comics, Fallout, Avatar: The Last Airbender, Timeline-191, Battlestar Galactica (1978), Transformers, Stargate SG-1 and Stargate Atlantis, Ravnica Cycle, Command & Conquer: Tiberian Series, Samurai Jack, Gulliver's Travels, Crimson Skies, The Elder Scrolls, The Lord of the Rings, Leviathan, Darkness Series, The Draka, A Colder War, The Handmaid's Tale, The Chronicles of Narnia, RuneScape, Pokémon, Island in the Sea of Time, Mortal Kombat, The Wizard of Oz, Star Trek: The Next Generation, Godzilla1998, The Tempest, The Lost World: Jurassic Park, and 20,000 Leagues Under the Sea.
  • The fourth (and current) game has Doctor Who, The Guns of the South, The Legend of Korra, Code Geass, The Nightmare Before Christmas, The Draka, Star Wars, Worldwar, Mass Effect 2, Hamlet, The Boys from Brazil, Pokémon, Power Rangers, The Order of the Stick, Timeline-191, Naruto, Arabian Nights, The Rising, The Invention of Lying, Command & Conquer: Red Alert Series, New 52, The Peshawar Lancers, Fatherland, Battlestar Galactica (1978), Warhammer, SCP Foundation, the Cthulhu Mythos, Captain Planet and the Planeteers, Discworld, Dinotopia, The Wizard of Oz, The Hobbit, and Death Race 2000.
• The Fifteen Mokona on a Dead Man's Chest series has thus far managed to include characters from at least 22 different series created or worked on by CLAMP.
• The Finale of the Ultimate Meta Mega Crossover. Featuring A Fire Upon the Deep x The Melancholy of Haruhi Suzumiya x Ah! My Goddess x The Incomplete Enchanter x The Chronicles of Amber x Callahan's Crosstime Saloon x Buffy the Vampire Slayer x Star Wars x Robert A. Heinlein x Shinji And Warhammer 40 K x Thousand Shinji x Once More With Feeling x RE-TAKE x Discworld x South Park x The Matrix. In the first 1400 words.
  • Oh, and it also has Mr. Rogers from Ultimate Showdown of Ultimate Destiny.
  • This reaches almost Lovecraftian proportions when it goes on to include all possible characters whose universes can be simulated by a Turing machine. Of course, most of them are off-screen.
• The Five Earths Project: The five Earths are based on the main pre-Crisis DC Universe Earths, but some fics feature counterparts of characters from elsewhere. In PaladinLgt's Earth-2 fics, the LA Special Crimes Unit includes Karrin Murphy, Richard Benson III, Lena Inverse, Anthony Stark and Minsc and Boo, as well as a couple of actual DC characters (Johnny Jones Jr, the son of Genius Jones, and an Earth-2 version of Snapper Carr).
• Fractured (SovereignGFC) pulls in three universes—Mass Effect/Star Wars/Borderlands. Then its sequel ups the ante by pulling in Halo, from which the Flood becomes the Big Bad due to some serious Negative Space Wedgies caused by all those fancy faster-than-light drives that were helping stomp the Reapers.
• A Game of Gods involves a group of mysterious beings kidnapping a host of beings from across the multiverse and throwing them into strange and perilous situations. The main cast of characters are diverse, and many of the worlds that the characters visit are drawn from other works of fiction.
• Game of Mass Destruction features The Joker as president and Harley Quinn as the First Lady and presenter of a reality TV show called Game of Mass Destruction where contestants are forced to destroy robots, have sex and kill each other for a share of $2 billion dollars. The contestants come from multiple fandoms including Naruto, Digimon, Pokemon, Sailor Moon, Ace Attorney, Doki Doki Literature Club, Corpse Party, Gravitation, Yu-Gi-Oh, Black Clover, Citrus, Death Note, The Cat Lady and The Letter.
• Goggles and the Tears starts where System Shock 2 ends, with the reveal that SHODAN's far from destroyed. Gordon Freeman, Booker DeWitt, and Mjolnir Recon 54 are all drawn to the UNN Von Braun through Tears leaking into their universes, crossing paths with the Soldier, "Goggles". SHODAN now sees Elizabeth as her key to godhood, and will go to any lengths to get it, even if it means traveling back in time to Columbia and using a physical body.
  • SOMA makes an appearance near the end when Goggles willingly gives himself up to SHODAN in exchange for her sparing his teammates, being sent to Pathos-II to be toyed with by a WAU-infested cyborg clone of SHODAN.
  • It should be noted that the caricature of Gordon Freeman used here is based on Freeman's Mind, primarily because the author considered it his headcanon.
  • And a bunch of other cameos appear in the Sea of Doors, masked as parallel universes.
• Grand Tour Started as a Ranma ½ and Star Trek (both Star Trek: Deep Space Nine and Star Trek: Voyager) crossover, it quickly spiraled into more series, including Lyrical Nanoha with many series acting as a one-chapter one-shot or a cameo mentioning at most.
  • The last chapter tops practically everything when it comes to fight scenes.
    • And now it's complete. What a ride.
    • Update! Now with a sequel! Awesome.
• Great Multiverse A Fanon wiki made up of alternate universe collide with one another and an open community. Usually with multiverse wars, alternate version, powerful eldritch entities, and a lot of fandom you can think of. Most of the wars were started by the The Combine invading many universes for conquest of the infinite multiverse as they can.
• Guilty Crown: The Lost Kingdoms is a Guilty Crown retelling with Puella Magi Madoka Magica as guests and takes place in an AU setting of YuYuGiDigiMoon. Later on, Sword Art Online exist that the events take place after GHQ's downfall.
• The Halloween Unspectacular anthology series tends to rely on this, especially in the entries related to its Myth Arcs. It's usually just various Nicktoons, but later editions also bring in Gravity Falls, Steven Universe, and Marvel Comics (both the Marvel Cinematic Universe and the mainstream comics) as well as others.
• The Hater Good crosses over cartoons that a ton of people in Real Life hate. Their universes were banished to a void and they live together in harmony. The ones showcased so far are Pig Goat Banana Cricket, Pickle and Peanut, Rocket Monkeys, Breadwinners, Fanboy and Chum Chum, Sanjay and Craig, and Space Chickens In Space''.
• Here Be Monsters combines a lot of different video-game, movie, and cartoon universes in a Multiverse-like fashion with various monsters and figures from mythologies around the world.
• "Heroes" Series is a crossover between various properties- Marvel Cinematic Universe, Arrowverse, Tolkien's Legendarium, Buffyverse, Smallville, X-Men Film Series, Charmed (1998), Merlin (2008), The Vampire Diaries Universe, DC Extended Universe, Firefly and Doctor Who to name a few.
• Horseshoes and Hand Grenades and its other stories, is a crossover with many previous Kamen Rider shows. The main show is Kamen Rider Fourze, but it also has Kamen Riders like: Amazon, Riderman, Den-O, Double, OOO and Wizard. It also has a cameo by Kit and Maya. Many of the stories take place through Simultaneous Arcs as there are different adventures that are being told throughout the story's universe.
• Hottie 3: The Best Fan Fic in the World and its sequel Hottie 4: Even Better Sequel.
• Hybrid Theory by Blade and Epsilon viciously satirizes the Massive Multiplayer Crossover by presenting such a world — but then having some of its inhabitants realize that it couldn't possibly have existed before a certain point because of the conflicting backstories of its component parts.
  • For readers who are a little slow, at one point the story focuses on, in quick succession, the Yamato-no-Orochi, the Yamato-no-Orochi and the Yamato-no-Orochi.
• iFight Crime With Victorious takes Drake and Josh, iCarly, and Victorious, the latter which share their own universe, and puts them together for a superhero story.
• Infinity Crisis began as a team-up between a group of superheroes from the Arrowverse and the Avengers of the Marvel Cinematic Universe to stop Thanos after his Snap ended up affecting much of the multiverse instead of just the Avengers' Earth. In the first story, the Justice League of the DC Extended Universe also got involved. From there, it has exploded into a group of over one hundred spin-off and side stories by various authors that have added the X-Men Film Series, Power Rangers, The Orville, He-Man and the Masters of the Universe, Thundercats 1985, G.I. Joe: A Real American Hero, The Transformers, Once Upon a Time, Descendants, Maleficent, Wicked, Teenage Mutant Ninja Turtles and many more.
• The Infinite Loops: The multiverse is on the fritz, so every world is put in a time loop while the admins patch things up. Occasionally a universe will reset as being merged with another universe. Or characters from one reality will be shuffled into another. Or loopers will use abilities native to a different loop that would make no sense in their current setting. Or the Admins will all dump them together in one loop for a big brawl they can watch.
• Infinity Legion: Heroes Unite is a Crisis Crossover with a threat spanning multiple (animated) universes, so this is a given. So far, we have characters from Danny Phantom, My Life as a Teenage Robot, El Tigre: The Adventures of Manny Rivera, Sym-Bionic Titan^note The story is set primarily in Sherman, Ben 10, Generator Rex, The Secret Saturdays, Miraculous Ladybug, Max Steel, Randy Cunningham: 9th Grade Ninja, Kim Possible, Star vs. the Forces of Evil, Samurai Jack^note  Featuring the surprise return of Ashi!, and Penn Zero: Part-Time Hero in the mix.
• The Insane Quest of Unfathomable Randomness, a Play-by-Post Game, is an odd example. While it does take place in a universe that crosses over with Super Mario Bros., The Legend of Zelda, Pirates of the Caribbean, Naruto, Pokémon, One Piece, No More Heroes, and PandoraHearts (among others), none of the characters from these series are the main characters. Instead, the story focuses on a cast of original characters and settings created (mostly) from scratch by the Game Master and the participants of the game, with the characters from the above series only appearing as supporting roles, cameos, and occasionally antagonists. But other than that, the concept is pretty much the same.
• The Institute Saga started off with Superman and X-Men: Evolution before adding the rest of the Marvel Universe as well as more DCU characters, Gargoyles, Harry Potter and even some mentions to other fanfics.
• Instruments of Time is a massive crossover fanfiction with more than fifty characters from many different works of fiction (including Dilbert, G.I. Joe and Tintin) and shows various teams of heroes attempting to save the universe from destruction, while various teams of villains conspire to take it for themselves.
• In The Jaded Eyes Series Harry Potter has Alucard, Lestat, and the Avalon Clan of gargoyles among his many allies.
• The Jean Grey School New York is a fanfiction that seems to utilize Marvel's mutants as a kind of backdrop linking various fictional characters together. Notably it features Ed, Phineas and Ferb, Goo, and Joseph Gribble, as mutants attending a version of the Jean Grey Academy for Higher Learning in Manhattan.
• JoJo New Universe is primarily an adaptation of JoJo's Bizarre Adventure with the human versions of characters from My Little Pony: Friendship Is Magic joining in. However, some parts are mainly adaptations of Fate/Zero, Danganronpa, Neon Genesis Evangelion, and Persona 5, with characters from other media like Lupin III joining in as well.
• Journey Through the Multiverse takes the multiverse-hopping premise from Kamen Rider Decade and Kingdom Hearts and plays it with a huge multiversal war for power, with multiple factions taking part in the war.
• Justice Society of Japan: A Super Fic set in The DCU, staring characters from Code Geass, Tengen Toppa Gurren Lagann, Fate/stay night, Xenoblade Chronicles 1, Final Fantasy XIII, Puella Magi Madoka Magica and Paranoia Agent, with occasional references to Kingdom Hearts and Tiger & Bunny.
• Kaiju Revolution features many different monsters from all manner of works from across different media, though the main focus is on the Godzilla franchise.
• Kouja No Senshi: A Sailor Moon Mega Crossover series featuring Powerpuff Girls, Courage, and more.
• Kingdom Crossovers fuses a lot of things, with Zim being the keybearer and going from everything, from Garfield to Warhammer 40,000.
  • Due to the Massive Multiplayer Crossover nature of Kingdom Hearts, many fanfics based on that canon will also use it as a catch-all explanation for blending together pretty much anything and everything. Just explain it as a new planet and there you go.
  • Tsubasa -RESERVoir CHRoNiCLE- is subject to this too for the same reason. There was actually a very short-lived (thank the heavens for it) fic with Tsubasa and Kingdom Hearts crossing over.
• Many League of Extraordinary Gentlemen fics, since that's the original premise.
  • The Black Dossier, Volume II details many non-British incarnations of the League, from a Western League comprising Joaquin Mason, Ethan Edwards, the Man With No Name, Maverick, and Lulu Colt to a sixties-Spy incarnation with Nape Solo, Derryk Flint, Agent 86, James Phelps, and Kel Robinson.
  • The League of Extraordinary Gentlebeasts is set in a Mouse World where Tanya Mousekowitz, the Sea Rat, Rikki-Tikki-Tavvi, the March Hare, and the Mouse from The Midnight Folk are recruited by a precursor to the Danger Angency to deal with a threat in Deptford.
• The League of Extraordinary Women by Diane Castle. After the defeat of Voldemort, the Wizarding World is under attack by a new threat, and a prophecy sends Hermione Granger across universes to put together a team of heroines to combat it. She recruits Samantha Carter, Buffy and Willow, Jaime Sommers, Alex Mack, and Selina Kyle. There are three sequel stories:
  • Cross Purposes: A collection of stories about what happens after all the heroines go back to their home universes, and look up the local counterparts to their former teammates, with mixed results.
  • The Secret Return of Alex Mack: Alex returns to her universe, and applies what she's learned to becoming a real superhero and putting together her own team. This has most of the above crossovers in it, adds in several more from which Alex recruits new members for her team. (And then someone recruits her.) It then adds in just about every B movie monster and bad guy, ever, for them to fight. In addition, other authors have begun contributing to this world as well.
  • Hermione Granger and the Boy Who Lived is a slightly more restrained Prequel to Secret Return, which so far is, to start with, a Harry Potter/James Bond crossover. Given the author, it will no doubt cross over with a lot more.
• Life After Death Trilogy by SilverGryphon8 and GamineMadcap Spider-Man 2/A Midsummer Night's Dream crossover starring Doctor Octopus and Robin Goodfellow. It is confirmed by the authors that the list of crossovers and cameos will include: Daredevil and most of the Marvel Universe, Bones, the Cal Leandros books, The Dresden Files, The Sorcerer's Apprentice, Doctor Who, and more.
• Locked In Digital has Izuku forced to go through nine different games (Sword Art Online, Slender, Five Nights at Freddy's, Outlast, Bioshock, Dark Souls, Resident Evil and Dead Space) after he was kidnapped by a Mad Scientist before attending U.A.
• Lost Tales of Fantasia is a Dark Fic that incorporates anything Disney has ever released into an epic saga set in World War II. The main protagonists are Mickey Mouse, Peter Pan, Shego, Prince Naveen, and a young Reginald Flynn. The main villains are Maleficent, Doctor XXX, Alice, the Headless Horseman, and Adolf Hitler. And those are just the major characters.
• The Loud House: Revamped is the current titleholder of the longest fanfiction in Fanfiction.net. It's a story wherein a self-insert teams up with the characters from the Loud House and partakes on many adventures into various worlds along with a massive amount of people.
• Lynching ITP is a cross between this, an Eragon / The Twilight Saga Hate Fic, and a set of Play-by-Post Games.

M — Z

• Magical Girls Unite Retransformed sets it's sights to be the biggest Magical Girl crossover in fanfic history, featuring franchises both well known and obscure in a celebration of the genre.
• Main Character Syndrome (With Exceptions) written by The_Ravenclaw_Werewolf show 40 characters ^note Spike Spiegel, Zuko, Korra, Fujioka Haruhi, L, Ciel Phantomhive, North Italy, Edward Elric, Okumura Rin, Killua Zoldyck, Kuroko Tetsuya, Levi Ackerman, Naegi Makoto, Nanase Haruka, Mankanshoku Mako, Shouyou Hinata, Shiota Nagisa, Yukihira Souma, Saitama, Fujinuma Satoru, Midoriya Izuku, Kageyama "Mob" Shigeo, Katsuki Yuuri, Serinuma Kae, Saiki Kusuo, Kobayashi, Heine Wittgenstein, Suzui Ryōta, White Blood Cell U-1146, Emma, Fujiwara Chika, Honda Tohru, Kamado Tanjirou, Ishigami Senku, Satō Mafuyu, Legoshi, Suzuki Iruma, Hanako, Gojō Satoru, and Hasegawa Ranga. from different series being kidnapped by an unnamed god-like entity and is currently stuck in an unknown dimension. For the time being, the 40 characters spend their time trying to navigate and learn about their new surroundings, each other and their home worlds, the culture and values they go by, and watching each other's journeys at the start of their own series.
• The Many Worlds Interpretation manages to incorporate just about every significant character from The Big Bang Theory. As rhere aren't too many core characters here, this is understandable. However, the other half of the crossover is the Discworld, Lots of Discworld characters pop in to augment the cast, both canonical and A.A. Pessimal's OC's.
• Mario's Day Job: A webcomic starring Mario and Luigi of Super Mario Bros. fame as (apparently) the only plumbers in Video Game Land. Linked universes include The Legend of Zelda: Ocarina of Time, Pokémon, Harvest Moon (which could count for this trope on it's own) and Animal Crossing.
• The Masked Toon Singer pulls characters from all over the multiverse to compete on The Masked Singer, which is hosted by Pinkie Pie and judged by SpongeBob SquarePants, Shrek, Starfire and Shantae.
• Mega Man Battle Network: A NetNavi and a Mew Mew is a novelization of the seven Mega Man Battle Network games with a crossover twist.
• Mega Ultra Super Heroes Unite by mon-ra brings together heroes from Danny Phantom, El Tigre: The Adventures of Manny Rivera, Randy Cunningham: 9th Grade Ninja, American Dragon: Jake Long and SheZow for an epic superhero crossover. Later installments would up the roster even more with shows like Steven Universe, Supernoobs and The Life and Times of Juniper Lee, among others.
• Mirrors Multiplied is one of the earlier and more well-known Ranma ½ mega crossovers on the net.
• The MRA Trilogy, full stop. The first installment is listed as just a Frozen fanfic, but includes also Mulan, Tiana, Dipper and many other characters, either as "protagonists" or femnazis. The others are remarkably more self contained: "MRA Effect", as the name implies, is mostly about Mass Effect characters with token mentions of the previous fic's exploits and a backstage war with Moana, and the final chapter is mostly about The Land Before Time characters, with only the token mention of what happened before.
• The MUSHU-Verse, a Team-Up Series featuring various animated protagonists who band together against the forces of evil. Each subsequent story in the series adds on several shows to its continuity, though some might only get as much as a cameo:
  • Mega Ultra Super Heroes Unite: Focuses on Danny Phantom, El Tigre, Randy Cunningham: 9th Grade Ninja, American Dragon: Jake Long, and SheZow.
  • Ultimate Rocking Rivals Unite: Adds on Atomic Betty, Kim Possible, Buzz Lightyear of Star Command, Star Wars: The Clone Wars (somehow), My Life as a Teenage Robot, WordGirl, Kid vs. Kat, Max Steel (2013), Phineas and Ferb, Dexter's Laboratory, The Powerpuff Girls, The Aquabats! Super Show!, The Incredibles, The Fairly OddParents!, and The Awesomes.
  • Vacationing Hero Families Unite: Throws Lilo & Stitch: The Series, Freakazoid!, and Making Fiends into the mix.
  • Super Eggheaded Geniuses Unite: Brings in Invader Zim, The Adventures of Jimmy Neutron, Boy Genius, Johnny Test, Big Guy and Rusty the Boy Robot, Total Drama, The Life and Times of Juniper Lee, TRON: Uprising, Teenage Mutant Ninja Turtles (2003), and Robotboy.
  • Secret Files of OWCA: Centers in on Scooby-Doo! Mystery Incorporated, Chip 'n Dale: Rescue Rangers, The Penguins of Madagascar, Inspector Gadget, Tintin, Speed Racer, Codename: Kids Next Door, ¡Mucha Lucha!, and Courage the Cowardly Dog.
  • Amazing Mystical Warriors Unite: Includes Monster Allergy, Steven Universe, Jackie Chan Adventures, and W.I.T.C.H..
  • Agents of WADDLES: Adds ParaNorman, Coraline, The Wild Thornberrys, Growing Up Creepie, Fillmore!, Sally Bollywood, The Replacements, Edgar & Ellen, Star vs. the Forces of Evil, Kick Buttowski: Suburban Daredevil, The DaVincibles, Get Ace, Detentionaire, and Xiaolin Showdown.
• My Hero Playthrough is set in a variant of the My Hero Academia universe, where Izuku has the power of The Gamer. Hints in story and Word of God imply there is more of The Gamer to the story than just Izuku's powers (if Shin Sun-Il being name dropped as a Korean Hero can be called a hint). In addition, four members of class 1-A and one member of class 1-B are replaced by characters from five other series, namely Mizuno Ami, Misaka Mikoto, Cassandra Cain, Mordred Pendragon (here having her name adapted as Penryu Modura), and Shimooka Hikari. Also, Tokiwadai from the Railgun series is referenced as a special Heroine training middle school.
• My Life as a Teenaged Von Neumann Device primarily focuses on My Life as a Teenage Robot, but is absolutely loaded with subtle and not-so-subtle references to other Nickelodeon and Cartoon Network cartoons. Among other things, the Cluster has been having trouble with the Irkens and the Yugopotamians, and Dr. Wakeman's old college roommate was Dr. Ghastly.
• Nack and Psycho: A Mega Crossover that is also a Sonic Continuity Reboot starring Nack the Weasel and Psycho as the main characters.
• "The Never-Ending Battle" by Rob Morris. Take M*A*S*H as the core fandom. Add in that several of the characters just happen to be Highlander-style Immortals and that before becoming Mulder's nemesis the Cancer Man was running experiments in Korea in the early 50's. Oh, and Sherman Potter is descended from a BtVS-style Slayer and came home from WWI with one Nick Knight in tow. Then there's Hawkeye and Hot Lips' roles in the Eugenic Wars from Star Trek, not to mention the way that most of the human crew-members of Deep Space Nine can trace their family bloodlines back to someone who served at the 4077th. And let's not forget about BJ's wife Peggy... and her half-sister Samantha Stevens. By the time Godzilla shows up you don't even bat an eye. Of course Godzilla and M*A*S*H can co-exist in the same universe — giant lizard monsters aren't really that strange.
• Neverending Struggle: Multiverse at War is a forum RPG based entirely on this trope. Basically, in a world where all fictional characters live, a war breaks out. Each separate faction (Individual Armies) is trying to take over the world. It has an incredible amount of 3 players, probably because of lack of advertisement.
  • Also, from the same person who manages that, comes Ookami no Monogatari and Wolfeye City. Ookami no Monogatari is about a group of characters from different dimensions (fictional works)—at the moment, One Piece and Mega Man X—being lead by a teenage girl to various missions. Wolfeye City also uses the Author Avatar trope, since it's about Alter-Egos, the comic representations of the author and some of her friends, fighting demons who are trying to destroy the city, who is filled with anime and video game characters. All three are Better than it Sounds. Though, Erase Alpha, the author, must love this trope.
  • All three are dead. And now Neverending Struggle V2 and IMAGINE, both Massive Multiplayer Crossover RPGs (not very active at the moment though).
• Never Too Young by Koolkame. Ben 10, W.I.T.C.H., Danny Phantom, The Life and Times of Juniper Lee, American Dragon: Jake Long, with cameos from Negima! Magister Negi Magi, Back to the Future: The Animated Series, X-Men: Evolution, Justice League Unlimited, Fantastic Four and Jonny Quest.
• New Game, New life, written by Adudefromthesea is a self insert Massive Multiplayer Crossover Fusion Fic. Set in the 90s at the start of Ranma ½, a young man finds himself in the body of a teenager named Ōe Hiroshi and seeing floating boxes reporting his status. Pretty much every manga, anime, and/or video game made or set during The '90s is present in this setting. Plus a few more that can be reasonably adapted.
• The Nicholas Andersen Trilogy takes elements from Inside Out, 4th Moon Of Xyth, The House Of The Dead, Star Wars, SCP Foundation, Percy Jackson And The Olympians, El Eternauta, and Miraculous Ladybug. Altough the focus is primarily on Inside Out for the first part and Miraculous Ladybug for the third, the rest of the works provide either tools for the characters, or antagonists to defeat.
• Nicktoons Tales is a fancomic that sews all Nicktoons settings into one planet, as well as original characters living on that planet.
• The Nintendo Show has, to name a few, Mortal Kombat, Angry Birds, Pokemon, Bomberman, Metal Gear Solid, and many, many others fighting the villians.
  • Also, in the same series, there is a planet with all anime settings sown into it.
• Nuclear Fusion on the Anime Adventure. Noteworthy because it manages to mix up elements of over one hundred completely unrelated series and manages to combine them into a single massive Fallout inspired Post-Nuclear world, and not only make sense, but tell an interesting and unique story.
• Obscurité Musicale is an active RPG that crosses over, mostly,The Phantom of the Opera, Sweeney Todd: The Demon Barber of Fleet Street, and Les Misérables— as well as Jekyll & Hyde, Billy Budd, and Spring Awakening. As well as one or two actual historical figures, and a less-vampiric Herbert von Krolock. You guessed it— it's very, very AU, but serious in tone. The in-character chatbox can't have the same said for it, being the ungodly place that spawned the pairing of Edward and the Corinthian. They're both on crack, of course. Just different kinds of crack. It's... weird. Some parts hang together fairly well. Some are a bit weird.
• A recent remake of Disney's Once Upon a Studio aptly named Once Upon a Studio: Version 2.0 takes this even further than the existing short, and shows Moana's father returning (voiced once again by Temuera Morrison), cameos by the Spring Sprite and Yo-Yo Flamingo from Fantasia 2000, and even Mufasa in ghost form.
• Overkill starts out as a Naruto/Nanoha crossover, and then becomes the author asking, "How many fictional characters can I conceivably put in this?"
• Ozy And Millie Adventures is this. Ozy and Millie have, so far, encountered The Cat in the Hat and the Mr. Men in this fanfic.
• Paper Mario X is a series of novelizations of the Paper Mario games... with characters from The Legend of Zelda, Sonic the Hedgehog, Kirby and Metroid added to the story.
• The Perfect Hero is a story in which a Gary Stu goes through inumerous series, continuities and even Real Life creating instantly happy endings for everyone. In the end, it's a deconstruction of the Gary Stu trope because even if he has the power to create happy endings, he has no power to create a happy ending for himself.
• Personality Conflicts by Ellen Brand melds Power Rangers with a spade of unrelated properties, including Danny Phantom and Case Closed, but her masterpiece is probably the Trial Arc, where the Rangers are forced to defend Zordon in galactic court for his actions over the course of the series, while a resurrected villain forces the VR Troopers, Beetleborgs, Masked Rider, and previous crossover allies the Ghostbusters to defend Earth. Also notable as the storyline provides a "proper" finale for each of PR's sister shows.
• P*R*I*M*A*R*C*H*S not only pulls this off, but justifies it from the 2nd arc onwards by the inclusion of an entity called the Plot Hole.
• Process of Elimination starts off primarily as a Ranma ½ and Tenchi Muyo! story, but has many additional anime added to its story.
• Prodigy is a crossover between: Harry Potter, CSI, House, Grey's Anatomy, NUMB3RS, Psych, Law & Order: Special Victims Unit, Series/NCIS, and possibly even more.
• Prophecies? We Don' Need No Stinkin' Prophecies by Greywizard (also on Twisting The Hellmouth) shows a Buffyverse where Harry Potter was raised by a married Xander and Buffy, and the forces of the Watcher's Council include characters from, according to the author: Tears of the Sun; Blackhawk Down; White Sands; ER; Witchblade; Supernatural; Raven; PSI Factor; City of Angels; Under Siege; Chicago Hope; Stargate SG-1; The X-Files; NYPD Blue; The Craft; Rogue Warrior; the Tom Clancy novels; X-Men; Rainbow Six; Law & Order; the Lethal Weapon movies; the Amber books; Alien vs. Predator; Practical Magic; Phoenix Force; and Sabrina the Teenage Witch (plus another Buffy fanfic, plus Buffy and Harry Potter themselves, for a total of 29 sources).
• The Quest for the Holey Grail is a Rouge Angles of Satin tale of King Arthur and Lancelot's quest for the titular grail, which is joined by Harry Potter, Hagrid, "indian Jones", "the lord of the rings people", Doctor Who, "professor snake" (a character who can only be Professor Snape), and inexplicably, Scooby-Doo and the Mystery Machine. They eventually have a massive epic battle with the "drak ones", who include the "lick king from Wrodl fo Warcraf", "Voldermor", Sauron, and the "russian woman from indian Jones and the crystal skull".
• The Reactsverse crosses over RWBY with Fire Emblem: Awakening and Puella Magi Madoka Magica, in addition to other series lacking a Reactsverse fic, like Persona and Toradora! as well as the Nasuverse.
• The Review Team is shaping up to be this quite a lot. The title itself is a self-admitted artifact title, as it now focuses on the adventure of a team of 10 heroes and villains from across the multiverse (mostly cartoons) to help an eccentric knight hold off a number of baddies, such as a mysterious Great Evil, Necrosan, evil generals, monsters of all shapes and sizes, and...well, let's just say it doesn't take itself seriously at the right times. Currently, the series is still in development and the Tropes page is going through a major change while the artist redraws everything from Seasons 1-3.
  • Thus far, the main franchises are Godzilla, My Little Pony: Friendship Is Magic, Adventure Time, Transformers, Batman & Robin, The Amazing World of Gumball, and so on! And that's not even counting the Original Characters, whom thankfully know their place, yet still have prominent roles.
• Roommates and its Buildingverse Spin-Offs. Girls Next Door, Down the Street, Superintendent and Meanwhile Upstairs are all Fan Webcomics on DeviantArt, that bring various fictional characters together in an out of canon world. The main characters are from Labyrinth, Les Misérables, The Phantom of the Opera and Pirates of the Caribbean (DTS adds Dracula and Frankenstein, MU Nightside and Criminal Minds) with countless cameos Shout-Out s etc..
• Scrambleverse: A Fic for All and None
• The Secret Life of Dolls, A Dollfic by Cleolinda Jones, writer of Movies in Fifteen Minutes.
• Shattered Skies: The Morning Lights, which brings together all five of the most famous Magical Girl series: Sailor Moon, Cardcaptor Sakura, Pretty Cure, Lyrical Nanoha, and Puella Magi Madoka Magica.
• Shinnen New Year is a massive story of being set after Guilty Crown. It is also the series finale of Kanius Production Abridged.
• Sleeping with the Girls, by Admiral Tigerclaw, is essentially a Deconstruction of the Self-Insert Fic, in which a normal guy (albeit one who's been through boot camp) is thrust into various fictional worlds by an unusual mechanism: He 'jumps' to each world the moment he falls asleep, and he wakes up in the same bed as a female character. Naturally, Hilarity Ensues. Note that the action scenes are military-focused (with good reason) and many times more epic than you may remember them being in that particular episode.
• SNAFU Comics have several webcomics that are crossovers. The most crossover-ish of them are Powerpuff Girls Doujinshi and Grim Tales from Down Below, which feature crossovers of almost every Cartoon Network and Nickelodeon cartoon (mostly, indeed, from CN).
• Sognic: Mall-tiverse of Madness: The series features a variety of characters from various parts of the Sonic the Hedgehog franchise, including both games and cartoons. It also features other Funny Animal video game characters, including Freddy, Bonnie, and Chica, Aero the Acro-Bat (referred to as Airo Arco-Bat), and Bubsy (referred to as Bubzy Bobket.) Bubzy also states that other "90's video game mascots" are canon to this world, though which ones exactly haven't been revealed yet. There are also some Original Characters.
• Songs of the Spheres features characters from more than 20 franchises regularly and more than two scores more less regularly.
• Sonic the Hedgehog: Rise of Nazo is a Mega Crossover that is based on Nazo Unleashed. Two more Mega Crossovers followed after it.
  • Another Sonic Mega Crossover Catch Me if you Can has Dr. Eggman skillfuling dupeing a pack of Magical Girls to attack Sonic. This is one of his most clever plots as Sonic is shown to have gynophobia.
  • And then there's another Mega Crossover called Multi-Dimensional Melee! which manages to include some pretty unlikely characters, and yet primarily focus on Sonic. The story follows an accidentally familiar plot which includes a Crack Pairing, several Original Characters, fourth wall breaking, a faceless plot orchestrator, and a seemingly decent amount of followers. Several continuity nods and series trademarks are also thrown here and there.
• The infamous Sonic's Ultimate Harem. A story in which Sonic (who isn't actually Sonic but rather a self-insert) tells Mario about his endeavors involving sleeping with over 360 women from 107 different franchises. These include: 1080 Snowboarding, ARMS, Ace Attorney, Akame Ga Kill!, American Dad, Anarchy Reigns, Ao No Exorcist, Battle Chasers, Battleborn, Bayonetta, Ben 10, Big Hero 6, Bioshock, Black Lagoon, BlazBlue, Bleach, Bloodrayne, Borderlands, Call of Duty, Code Geass, Crash Bandicoot, DC Comics, Danger Girl, Danny Phantom, Darksiders, Darkstalkers, Dead or Alive, Devil May Cry, Digimon, Donkey Kong Country, Dragon Ball, Dragonaut the Resonance, Fairy Tail, Final Fantasy, Fire Emblem, Freedom Planet, G.I. Joe, Ghost in the Shell, Guilty Gear, High School DXD, Highschool of the Dead, Jak and Dexter, Kid Icarus, Kill la Kill, Killer Instinct, Kim Possible, King Of Fighters, Kingdom Hearts, League of Legends, Legend of Zelda, Lollipop Chainsaw, Loonatics Unleashed, Looney Tunes, Lupin the Third, Majikoi, Marvel Comics, Mass Effect, Metroid, Mobile Suit Gundam, Mortal Kombat, My Hero Academia, My Little Pony, Naruto, Ninja Gaiden, One Piece, Overwatch, Paladins, Panty and Stocking with Garterbelt,Pokemon, Queen's Blade, RWBY, Ratchet and Clank, Rayman, Resident Evil, Rumble Roses, Sailor Moon, Shantae, Skullgirls, Sly Cooper, Soul Calibur, Soul Eater, Space Channel 5, Star Fox, Star Wars: The Clone Wars, Street Fighter, Super Mario, Swat Kats, TUFF Puppy, Teen Titans, Teenage Mutant Ninja Turtles, Tekken, Tengan Toppen Gurren Lagann, The Fairly Oddparents, The Incredibles, The Secret Saturdays, Thundercats, Tomb Raider, Total Drama, Virtua Fighter, Vocaloid, Who Framed Roger Rabbit, Witchblade, Wonder over Yonder, Wreck-it-Ralph, Xiaolin Showdown, Young Justice and Yu-Gi-Oh!.
• Suburban Senshi, which brings in all sorts of series into the Sailor Moon universe.
  • Justified (well, as justified as such a thing can be in the fanfic industry) in the Sailor Moon Expanded universe; a method of trans-dimensional travel allows characters from the Sailor Moon universe to travel to other dimensions on the conceit that every anime and manga ever produced has its own separate universe. The various Dark Kingdom Renegades seemed to run into this quite often in their early years on Earth, having traveled to the worlds for Bubblegum Crisis and Ranma ½ just for starters, and later to Urotsukidouji (aka Legend of the Overfiend), where Titanite (youma Sailor wannabe, for those just joining us) encountered said Overfiend. With her disguise device set to Sailor uniform... and broken. Thankfully, the author managed to avoid following the obvious to its conclusion in a manner most awesome. And in an unfinished story, Titanite finds herself in Neon Genesis Evangelion, and unfamiliar with the series, tries to understand it in terms of the classic Humongous Mecha shows she's seen in the past.
  • To make things doubly interesting, the laws of these various dimensions seem to apply themselves to trans-dimensional visitors over time. Thus, in the Ranmaverse, Calcite takes on the mannerisms of a wizened martial arts master, and felinoid Margrave becomes even more catgirlish than usual. The DKR use this to their advantage; as long as they remain in the Sailor Moon universe and work on behalf of the forces of good, they are nigh indestructible.
• Spongebob 2019 brings almost all of the Nickelodeon characters together to defeat a now out-of-character and power hungry Spongebob Squarepants, with appearances from other shows that aren't originally from the main Nick lineup like Beavis And Butthead (MTV), Blue's Clues (Nick Jr.), Degrassi, H₂O: Just Add Water (TeenNick) and Power Rangers Samurai (This airs on Nick in the US, but not really a Nick original).
• The Story to End All Stories is one gigantic crossover. It includes characters from Doctor Who, The Hunger Games, Star Wars, Indiana Jones, The Princess Bride and Mystery Science Theater 3000, among many others. It also features an appearance by the king of crossovers, John Munch.
• The Strings We Pull sees OneShot, Deltarune, OFF, Purrfect Apawcalypse, Night in the Woods, The Hex, Inscryption and The Magnus Archives crossing over.
• Sunset's Isekai: Where do we even start? Nearly every chapter crosses over with some work or other- fanfics (some of which are themselves crossovers), TV shows, video games, manga… Many chapters even cross over with more than one work at a time.
• Super Magica Wars (found here) is a Magical Girl and-then-some themed Super Robot Wars type fic, with its primary roots in Magical Girl Lyrical Nanoha A's, but including a batch of series that fit the theme without explicitly being Magical Girl series, like Buso Renkin and GARO. Taking on the SRW theme, it also includes one or more original characters, and as a surprise guest, it includes Puella Magi Madoka Magica... but as Magica Madoka Veneficus Puella rather than the canon version.
• Super Milestone Wars
  • Super Milestone Wars 2
    • Kamen Rider x Super Sentai x Super Milestone Wars: Crossover Taisen is a crossover of Super Milestone Wars 2, Kamen Rider and Super Sentai.
• Super RWBY Sisters takes the world of RWBY and throws it into the world of Nintendo. In addition, there are several "guest" universes such as Sonic the Hedgehog, Danganronpa, Shovel Knight, Shantae, Devil May Cry, Akame ga Kill!, DOOM, Persona 5 and much more.
• Super Sentai vs. Power Rangers: The Liveblog serves as one to several Power Rangers and Super Sentai series similar to the work covered, Super Sentai vs. Power Rangers. It also adds several Sentai and Ranger actors into the mix.
• Super Smash Bros: The Animated Series: It was inevitable, given the games it's based on, but the series also throws in characters from Batman: The Animated Series, Attack on Titan, Coco, Dragon Ball Z...and Super Wings, weirdly enough.
• In The (sur)Real World a Japanese TV network does its own version of The Real World, and thus sticks together in one house Nuku-Nuku (All Purpose Cultural Catgirl Nuku Nuku), Washu (Tenchi Muyo!), Urd (Ah! My Goddess), Mamoru Chiba (Sailor Moon), Kyosuke Kasuga (Kimagure Orange Road), Ataru Moroboshi (Urusei Yatsura), and Ranma Saotome (Ranma ½).
• Survivability tells its own plot in the Bleach universe through K-Pop characters (from at least 4 different fandoms).
• Sweet Dreams has Labyrinth, A Nightmare on Elm Street, Inception and The Sandman (1989).
• Tails Gets Trolled starts off with Sonic the Hedgehog and Super Mario Bros., two semi-related franchises, but then goes batshit by having characters from both series team up (or become enemies) with characters from Looney Tunes, The Incredible Hulk, and League of Legends. And even more characters from other franchises are almost constantly introduced, to the point where it's hard to name all of them.
• Takamachi Nanoha of 2814 fuses together Lyrical Nanoha, the DCAU, Fate/kaleid liner PRISMA☆ILLYA, Negima! Magister Negi Magi, Sailor Moon, and Cardcaptor Sakura in a hilariously awesome story. It begins with, shortly before becoming a Magical Girl... Nanoha ends up becoming a Green Lantern. And then the rest of the franchises get added in until it can become easy to lose track of who's doing what (especially since the Negima and Cardcaptor Sakura characters are convinced that to be proper magical girls they're required to use Code Names). The story has just finished going through the first two seasons of Nanoha (the second of which ends up being combined with the Holy Grail War), and has begun on the first season of Justice League with more and more craziness added in thanks to the crossovers.
  • Anything by Shadow Crystal Mage will invariably become this once it has enough chapters. Special mention also goes to Raikiri Triken.
• Take a Stand inserts characters from virtually every animal-based Disney franchise into Zootopia. Of particular note, Robin Hood and Maid Marian are Nick's parents. The third installment takes it a step further by opening a portal to the Marvel Comics Universe.
• Tales From The Barman... and Tales From The Barman... Part II implement a Massive Multiplayer Crossover through the device of a bar run by Xander of Buffy the Vampire Slayer, in Cleveland after the end of the series. Each chapter is its own small crossover fic, ranging from vignettes to full stories, with characters from dozens of settings ranging from Michael Moorcock's Eternal Champion to Cheers making an appearance and telling their tales.
• Tales Of Toons: Knight of Lolicon, which was shilled on this wiki, and is a crossover of Dragon Ball GT, Transformers, Inuyasha, One Piece, Naruto, Sailor Moon, Cardcaptor Sakura, Powerpuff Girls Z, Futari wa Pretty Cure, Mermaid Melody Pichi Pichi Pitch, Ah! My Goddess, Love Hina, Petite Princess Yucie, Haruhi Suzumiya, Negima! Magister Negi Magi, Pokémon, Digimon Tamers, Yu-Gi-Oh!, Zatch Bell!, Rozen Maiden, The Legend of Zelda, Star Ocean, Xenogears, the Tales Series, Final Fantasy, and Lolita. Yes, Lolita.
• The story The Terran Jedi over on Twisting The Hellmouth throws in many random cameos into a story where Xander is a Jedi Master, including but not limited to Stargate-verse, Discworld, Torchwood, Harry Potter, and Frasier (of all things).
  • The Stargate parts have become so frequent and so large that they have long since gone beyond cameos, and at this point it reads like a straight crossover. The spin-off stories also make NCIS, Haven, and Castle part of this universe.
• The There Was Once an Avenger From Krypton series takes the Marvel Cinematic Universe and adds other shows and movies into. To date, this includes The Owl House, Gravity Falls, Supergirl (2015), Ben 10, Tales of Arcadia, Miraculous Ladybug, Percy Jackson and the Olympians, Danny Phantom, Voltron: Legendary Defender, Steven Universe, She-Ra and the Princesses of Power, Dragon Ball Super, and Infinity Train. And those are just the properties that get major focus, with allusions and references to even more scattered throughout.
• The Three Kingdoms is another mega-crossover involving characters and objects from different game franchises, novels, movies and anime to suddenly start appearing in our world at December 21 2012, marking the Doomsday. After a short amount of joy, politics decided that these 'newcomers' were dangerous due to their magic capabilities, superior technology and other abilities. An event called Bad Apple Event led to Hakurei Reimu from the Touhou Project video game franchise annexing the entire US which could be read on the prolouge. The Vocaloids and Miku eventually caught wind of the event and decided to annex other countries in the name of protecting them from Reimu. Of course, eventually, the kingdom of Gensokyo and Yamaha formed with war between them. They were soon joined by Haruhi no Suzumiya after realizing her god-like powers. By then, the three kingdoms have formed and the crossover 'The Three Kingdoms' led to Haruhi planning an invasion. This mega-crossover contains a variety of different creations (from HMS Thunderchild, Alex Mercer, Familiar of Zero, Star Wars, Strike Witches, Metal Gear and even One Piece).
• Three Messengers is somewhere between this trope and a Crossorgy. Production at present is slow because of how much there is that the author isn't sure about in one of the source works.
• TKR2, a now-defunct massive fanfic series by multiple authors started off as a fairly straight Knight Rider/Team Knight Rider fanfic, then expanded to cross over with Star Wars (a lead character becomes a Jedi Master), then Star Trek (another lead character becomes a Borg queen—one episode has our heroes on a chase across dimensions, culminating in the Starship Voyager landing to help talking cars fight Darth Vader, while a young Gene Roddenberry, Glen Larson, and George Lucas, who had apparently been out necking, look on), The Invisible Man (He gets a talking car), Highlander (yet another character is an immortal—and also a Jedi), Hercules: The Legendary Journeys (In a very complex crossover, a character described as looking like Kevin Sorbo teams up with the real Kevin Sorbo, and also Hercules), Teletubbies (They're evil aliens), Barney (He's A Great Old One), James Bond (He teams up with our heroes to stop a supervillain plotting to build a giant lightsaber with which to cut the earth in half), and Survivor. Really.
• Together Again by Chris Davies crosses over several anime, including Gall Force, Sailor Moon, Neon Genesis Evangelion, and many more, along with numerous non-anime sources including Star Wars, GURPS International Super Teams and DC's Sandman.
• While Tomica Hero Rescue Pups stars characters from PAW Patrol and Tomica Hero Rescue Force, it's also very heavy on Star Wars and Bayonetta elements, complete with a Sith lord named Darth Longinus leading Neo Terror's remnant.
• The Tooniverse Emissary [1] is a homage to The Subspace Emissary (itself a Massive Multiplayer Crossover) that involves cartoons and anime series instead of video game series, as its title suggests. Series involved include SpongeBob SquarePants, Star vs. the Forces of Evil, The Amazing World of Gumball, The Simpsons, Phineas and Ferb, South Park, Family Guy, Milo Murphy's Law, Pelswick, The Powerpuff Girls... we could do this all day, you know.
• The story Toons takes place in a world where the characters of the author's favorite cartoons live. And that is a lot of shows, from the popular (eg Ben 10) to the more obscure (eg Grossology). Here's the full list.
• Toon Zone Wrestling features the titular wrestling federation, which has an exceptionally eclectic roster. Said roster includes characters from: Adventure Time, Backyard Sports, Gravity Falls, Steven Universe, Robot Wars, Undertale, and Tony Hawk's Pro Skater, among other franchises, various YouTubers, real-life athletes and celebrities, and characters from the creator's other projects.
• Top Dog, by Doghead Thirteen, is a shared universe with several different storylines happening at once; the three main stories involve very AU versions of Harry Potter, Ranma ½, and Naruto. It pulls in characters and references from everywhere under the sun, including Tenchi Muyo!, Firefly, Star Wars, Star Trek, Girl Genius, Sluggy Freelance, and more.
• Torchic and Pals has LOTS OF Characters such as Pokemon, Happy Tree Friends, Skylanders, Moshi Monsters and many, many other Characters!
• The Total Drama crossover fic Total Drama Cruise features characters from multiple series competing together.
  • The first season has Sammy, Lindsay, Dawn, Eva, Scott, DJ, Eddy, Rolf, Ash Ketchum, Clemont, Fumikage Tokoyami, Aqua, Wendy Corduroy, Stocking, Ryuko Matoi, Mako Mankanshoku, Peter Perfect, Armin Arlert, Brendan, Priestess, Murderface, Satoshi, Yuka, Mighty Ray, Terry Bates, Michaelangelo and Beast-Man. Starscream also joins the season a few chapters in, with Amy, Lightning, Sanji and Alastor also joining much later on.
  • The roster for The extreme, EXTREME and insane Ridonculous Race! features Kazuma and Darkness, C-3PO and R2-D2, Aran Ryan and Don Flamenco, Buddy Thunderstruck and Darnell Fetzervalve, Mataro Mankanshoku and Julian, Scott Pilgrim and Ramona Flowers, the Summerween Trickster and No-Face, Ed and Edd, Angel Dust and Cherri Bomb, the Joker and Harley Quinn, Nami and Nico Robin, Jotaro Kujo and Joseph Joestar, Bebop and Rocksteady, Wilykit and Wilykat, Kim Possible and Ron Stoppable, Toko Fukawa and Komaru Naegi, Chirio Fujisaki and Miu Iruma, Emma and Kitty, Lara Croft and Nathan Drake, Scooby-Doo and Shaggy Rogers, Ben and Gwen Tennyson, Mariah and Lee, Tails and Zooey, Azula and Ty Lee, SpongeBob and Patrick, Jay and Silent Bob, Gajeel Redfox and Levy McGarden, Johnny Sfondi and May, Rocky and Bullwinkle, Deadpool and Cable, Sam & Max, Yzma and Kronk, Caboose and Tucker, and Unikitty! and Felicity.
  • The Spectacular Blaineley show! features Johnny Cage, Sari Sumdac, Launch/Lunch, Carl Brutananadilewski, Jenny Wakeman, Crash Bandicoot, Rock Howard, Makoto Naegi, Chuck the Evil Sandwich-Making Guy, Sid the Sloth, Captain Hook, Catwoman, Killua Zoldyck, Astrid Hofferson, Mei Hatsume, Mae Borowski, Ashley, Trevor Philips and Robyn Goodfellowe.
• Another Total Drama example is Total Drama Everything. Season one includes Dante, Rarity, Mega Man, Grunkle Stan, Zelda, Deadpool, Superman, Nom Nom, Julie Yamamoto, Solid Snake, Yusei, Double D, Mandy, Fred, Connie, Toph, Lammy, Shrek, Goku, Princess Bubblegum, Maya Fey, Ash and Pikachu, Coco, and Sam.
  • Season two bring back several from the past season, while adding Ruby Rose, Leo, Cynder, Po, Moka, Jak and Daxter, Poison Ivy, Sonic the Hedgehog, Gaz, and Harry Potter.
  • Season three adds Bayonetta, Carmen Sandiego (Netflix version), Michaelangelo, Nagito, Noodle, Rukia, Sebastian Michaelis, Sly Cooper, Snake Eyes, Vicky, and Webby.
• Total Drama Infinite is a Total Drama fanfic that features contestants from all kinds of fictional universes as the contestants:
  • The first season features Android 18, Charlie Magne, Charlotte Katakuri, Cinder Fall, Deadpool, DIO, Dororo, Edward Elric, Elena, Geralt of Rivia, Glass Joe, King Harkinian, Mercy, Miles Edgeworth, Nicole Watterson, The Nomad, Popo and Nana, Rick Sanchez, Russel Hobbs, Sora, Spinel, Susie, Tari, Tatsumaki and Wendy Marvell.
  • The second season, on top of bringing back several of the above, introduces Aqua, Dr. Coyle, Harley Quinn, Isabelle, JFK, Kazuma Kiryu, Mae Borowski, Max, Meggy Spletzer, Miu Iruma, Reg, Starscream, Tenya Iida, Terry Bogard and Waluigi. Toko Fukawa and Giovanni Potage also join the season later on.
• Another Total Drama fanfiction (still ongoing) example is Total Drama Multiverse includes Byakuya Togami, Jim Chapman, Nana, Bridgette, Isabelle, Zenitsu, Bendy, Joseph Joestar, Chie Satonaka, Mikasa, Kokoro, Yakko Warner, Abiru Kobushi, Dib, Squidward, Xehanort, Yuyuko, Princess Bubblegum, Bakugo, Cuphead, and Fluttershy.
• The Total Drama crossover fanfic Total Drama Ultimate Crossover features a cast consisting of Crow, Cassie Cage, Natsu and Happy, Heavy Weapons Guy, Tracer, Lord Voldemort, Hawkeye, Bowser, Princess Azula, Sticks the Jungle Badger, Peridot, Sunset Shimmer, Roman Torchwick, Itachi Uchiha, Marinette and Tikki, Sans, Usopp, Homer Simpson, Beast Boy, Vegeta, Saitama, Arcee, Aqua, Athena Cykes and Ryuga.
• The Traitor Game is like CLUE. Except with various fictional characters dropped into a setting and violently murdering people amidst a usually epic background. So far, we've had Trigon getting beat up by Asuka, Rei, Cyborg Superman, Doctor Doom 2099, and a slew of others by the usage of Yellow Lantern rings... actually, just go read the summaries there.
• The Travelsverse is a collection of both Nintendo and other game series that are connected via Super Smash Brothers, by Bulbagarden Member Instrutilus. Though a majority of the action seem takes place on Sinumonas, the name of the Pokémon World here, the person in charge, Instrutilus, has expressed interest in looking at other series to help connect the universe, rather then just having Link and Samus live on the planet and several references to the Super Smash Brothers Core, a collection of the universes greatest fighters that was named after an old tournament they once participated in.
• TRES is a lesser-known webcomic which stars several characters from different anime and has a Tsubasa -RESERVoir CHRoNiCLE- influence.
• Ultimate Crossover Wrestling combines not just wrestling organizations (WWE, TNA, etc), but anime, games, tv and movies.
• Ultimate Smash Adventure involves the Super Smash Bros. fighters both the original game and Melee (plus only a few of the Newcomers that appear in Brawl, as the fic itself was written and completed while Brawl was still under development) working as a Justice League-esique team dedicated to protecting the multiverse. They travel several to worlds and fight villains from various video game and anime worlds (such as Talesof Symphonia, or One Piece), as well as even the Ultimate Marvel universe.
• Undocumented Features, created by Eyrie Productions Unlimited. This story is more or less continually written since the early 1990s by a dedicated creative team, running into many many megabytes of stories. UF blends together so many sources that no one has a definitive count of them, and has successfully combined them all into a single galaxy-spanning space opera epic with an internal history of thousands of years. The earlier works are admittedly crude — the first installment was intended as a joking "we could do something like this" example meant to be discarded when the "real" writing began — but UF (and other EPU) stories since the middle to late 1990s have all been of exceptional quality and workmanship.
  • Also by the fine folks at EPU, Neon Exodus Evangelion starts off looking like just an ambitious Alternate Universe Fic for Neon Genesis Evangelion, but before long it becomes clear that this is a Massive Multiplayer Crossover world involving at least a dozen sources besides NGE, and that it only tangentially resembles Canon Evangelion. Interesting to note that, much as Evangelion was a deconstruction, Neon Exodus Evangelion is a deconstruction of what the authors felt was the meaningless nihilism of the original, and the fic can be somewhat hard to warm to.
• Unexpected Encounters (Massive Multiplayer Crossover with Aggretsuko and Sonic X, with some cameos from characters from other sagas such as Beastars, Star Fox, Kaiketsu Zorori, Happy Tree Friends, and Ratchet & Clank). The characters from Zootopia, Aggretsuko, Kaiketsu Zorori, Star Fox and Ratchet & Clank belong to the same universe, while the characters from Sonic X, Beastars and Happy Tree Friends come from three different dimensions.
• Unity is for the most part simply a crossover between Star Wars and Star Trek, albeit an exceptionally large and epic one. Then suddenly its last few chapters involve Seven of Nine and Mara Jade crossing into all kinds of other franchises: Halo, Hellraiser, Wing Commander (where they note the resemblance a character played by Mark Hamill has to Luke), Night of the Living Dead (1968), The War of the Worlds, the Marvel Universe, Transformers, The Lord of the Rings, The Hitchhiker's Guide to the Galaxy, Alien, and Battlestar Galactica. After that last one, Number Six even tags along and plays a key role in the final battle.
• Unity Force by meetoureyes features a ragtag of characters in all forms of media that includes animes, TV series, video games, etc. They are sent to the multiverse to either protect the worlds from getting destroyed or to lend a helping hand to someone's problems. The heroes all situate in a place known as the Unity Force Academy in Unity Force Earth.
• Vathara's Urban Legends universe, which includes or alludes to easily twenty or more series.
• The Virus, by Chris Jones. This short story—which was a originally a simple crossover between Ranma ½ and Tenchi Muyo! with a few cameos from other series—expanded unexpectedly into a shared-world megacrossover where characters from dozens of fandoms had to deal with the after effects of a Juraian virus which had incorporated Ranma's gender-bending curse into itself, and then transmitted it permanently to every living human.
• Vigil is a combination of this and a Fusion Fic that rolls together the settings of Mass Effect, XCOM: Enemy Unknown, F.E.A.R., Eclipse Phase, and Destiny, with elements of Sid Meier's Alpha Centauri and Terminator for good measure.
• When Legends meet is a crossover between various properties- Tolkien's Legendarium, Marvel Cinematic Universe, Star Wars, Buffyverse, Smallville, Supernatural, Arrowverse, Kingdom Hearts, Compilation of Final Fantasy VII and Dragon Ball to name a few.
• Where on Earth, Spies is a Web Serial Novel that began as a crossover between Where's Waldo and Carmen Sandiego in which they are the best agents at two competing secret agencies. Foe Yay Shipping Ensues. After the first chapters, the author expanded into other properties, incorporating (among others) the GEICO Gecko, Erin Esurance, and Allstate's Mayhem. It can be found here.
• Whotrek The Ultimate Adventure 1 starts out as just a crossover between Star Trek and Doctor Who, but it quickly turns into one of these.
• In an example from the 1990s, "The Witness" by Michele Martin combines Highlander, Forever Knight, Quantum Leap, The X-Files, and Starman, in an admirably coherent plot with accurate characterization. Several other series make brief cameos.
• With A Snap takes place after the events of Avengers: Infinity War. Thanos’ snap not only affected the MCU, but every universe and reality. Other heroes from other universe join the Avengers as they search for Thanos, and a way to undo the snap. This is a massive crossover between the MCU and various series including, but not limited to: Ben 10, Miraculous Ladybug, Danny Phantom, My Life as a Teenage Robot, Sym-Bionic Titan, Kim Possible, The Secret Saturdays, El Tigre: The Adventures of Manny Rivera, OK K.O.! Let's Be Heroes, She-Ra and the Princesses of Power, Transformers: Animated, Power Rangers, Doctor Who, Stargate SG-1, A Certain Magical Index, and One-Punch Man.
• The series With Pearl and Ruby Glowing is about characters from several different movies and shows attending a sexual assault support group. Initially, it started out with just media from Disney Animated Canon, but it eventually expanded to other types of children's animated media, with even live-action shows, movies, and musicals getting thrown into the mix. There are plans to include adult-animated shows in a future spin-off.
• With This Ring is primarily a Young Justice fanfic, but it includes occasional snippets of alternate versions of the main character in other universes, from Warhammer Fantasy, to Gate, to Death Note, to Captain Planet, and many more. On occasion, they even interact with the main storyline; the ThunderCats (2011) protagonist was a key part of defeating Krona, and the Renegade protagonist dates Luna.
• The World of the Creatures: Takes place inside a fan's head, so various characters from different franchises get to meet - Most notably Batman, Buffy Summers, and The Doctor
• Years ago there was a combination fanfic/webcomic called The Wrath of Invincar. The main characters of Slayers and The Vision of Escaflowne, who had been placed in a Gilligan's Island-esque setting, set out on a quest to defeat...a green Smurf, with hilarity ensuing along the way. Such antics included Gaav settling an argument with Phibrizzo by pinning him beneath the Mystery Machine; much mockery by the French knights; and a showdown between Lina Inverse and Quick Draw McGraw. Sadly, the story has since been taken off the Internet for space reasons.
• You Got HaruhiRolled! usually isn't a crossover, but the court case arc has the conceit that all characters from all fiction exist in the same City of Adventure, so the author included cameos from every fictional universe he could think of.
• YuYuGiDigiMoon is an ambitious crossover between YuYu Hakusho, Yu-Gi-Oh!, Digimon Tamers, Digimon Frontier and Sailor Moon. Later stories include Digimon Adventure, Digimon Adventure 02, Yu-Gi-Oh! GX and Yu-Gi-Oh! 5Ds.
• Curtis Wildcat's Zero Context: Taking Out the Trash is set in a Science Fantasy world called Muffinville, home to all sorts of both scientific and magical odds and ends. The protagonists include the Goddess of Nature and her chief lieutenant, Kaoru Matsubara, a sentient doll of Lina Inverse and a trio of Pokémon; another protagonist uses a Pyro-GX starship to get from place to place, a meeting early in the story is held in an Eclipse-class Star Dreadnaught repurposed as a restaurant, and the main antagonist uses a "dark-toned Hulkbuster rip-off" to help him fight... and that's just for starters.

Other fan works:

Fan Games

• Abobo's Big Adventure has characters and elements from several dozen NES games mashed together.
• Brutal Mario has Mario crossover with Final Fantasy Tactics, Kirby, Mega Man Classic, World of Mana, SaGa (RPG) and much more.
• Card Sagas Wars (see here) is another ambitious fangame, combining many characters from several different games. It's the sort of thing that can only exist due to dedicated fans or else the legalities of it would make everyone's heads spin.
• CMC+ is a Super Smash Bros. Crusade modification that includes many different franchises and characters (over 200 playable) in the Platform Fighter setting. Including veteran fighters from the vanilla game, plus some extra newcomers from their respective company/franchises; other IP's from games and non-games previously unassociated with Crusade; and truly oddball additions that can only happen in a Crack Fic setting (Barack Obama, Colonel Sanders, and Ronald McDonald).
• Gokou Sama (aka Somarinoa or Thor Steinbach) is currently working on the following Massive Multiplayer Crossover Video Games: Ultimate Showdown (top down action game about characters from everything engages massive duel of death) and Amalgam Online(Alien-themed Massive Multiplayer Crossover Strategy game)
• Gwange Dash, an indie shmup featuring ships, enemies and bosses from a lot of different shooters, including DoDonPachi, Guwange, Ketsui, Ikaruga, Twin Cobra, Gradius, Battle Garegga, Radiant Silvergun and countless more.
• Happy Tree Friends Adventures, a series of platformer games starring the titular Happy Tree Friends and Bowser (and his usual minions from his home franchise). However, it also features other characters, music, and elements from other franchises. Those franchises include Contra, TwinBee, Mega Man, Gradius, among others. It also helps that currently the series has a large cast.
• Interdimensional Academy starts off with various characters from Deltarune, My Little Pony: Friendship Is Magic, VOCALOID and Miss Kobayashi's Dragon Maid attending a magical school together, and adds characters from Danganronpa and OMORI in the most recent chapters, as well as a few characters that weren't mentioned earlier.
• Mari0 takes the original Super Mario Bros. and gives Mario a Portal gun. It also includes a Minecraft mode.
• Mushroom Kingdom Fusion, a fangame-in-progress, sends Mario and Luigi (later a host of others) across a few of the most famous gaming franchises in order to bring down Legion before he can successfully fuse all worlds and drain the energy from the reaction... or something. The creators are keeping the plot a secret—will they finish before it becomes the gaming equivalent of a Dead Fic? Given the ambition of the project, it unfortunately did not... but hey, Solid Snake is mentoring them! If that doesn't make it awesome, what does?
  • Its sister project Super Mario Fusion Revival, though more Mario-centric (as in, only Mario and Peach thus far are playable characters), still features levels and areas from many other franchises once outside the first world. A smaller and less ambitious project then MKF, but built with a stronger engine and with great care put into each stage. Take a look for yourselves.
• Rakenzarn Tales is shooting for this. Its world, Rakenzarn, claims to be home to all fictional characters and incorporates a huge number of characters, either playable or as NPCs. While popular ones like Mario, Sonic, Naruto and Deadpool aren't too surprising, there are lesser-known and unlikely ones like Kanata Saionji, Nina Sakura, Himawari, and Tomba!.
• Super Mario RPG: Armaggeddon is a crossover ROM hack of Super Mario RPG that allows Mario's team to fight various characters from the Final Fantasy and Pokémon franchises, as well as engage in battle with Magus. In this game, defeating Tonberries gives you armor that absorbs certain elements.
• Terrordrome the Game: Rise of the Boogeymen is a fighting game featuring characters from thirteen^note (The Texas Chainsaw Massacre, A Nightmare on Elm Street, Evil Dead, Halloween, Child's Play, Friday the 13th, Scream, Phantasm, Maniac Cop, Candyman, Re-Animator, Hellraiser and Pumpkinhead) different horror movie franchises.
• Xeno Fighters R, a Bullet Hell Shmup featuring ships and characters from Gradius, Raiden, Legendary Wings, Twinbee, Galaga, and more.

Fan Vids

• Crossover World. Saying anything else would ruin it.
• The granddaddy of all Fan Vids is the Daicon IV Opening, made for a Japanese anime convention in 1983 by a group who would go on to become Studio Gainax. It's impossible to list (although somebody tried) all the sci-fi, fantasy, movie, comic book and game references found in these five incredibly animated minutes.
• Dead Fantasy unites (mostly) female characters from Final Fantasy, Kingdom Hearts, and Ninja Gaiden as they end up having to fight each other in very brutal ways.
• Hat-LovingGamer's video, I thought this was Sonic 2 begins with the Final Boss fight of Sonic the Hedgehog 2, and every time the Death Egg Robot is hit, the entire franchise changes, replacing Sonic and the robot with another hero and villain, all rendered and animated in the style of Sonic: Mario and Birdo, Link and Ganondorf, Kirby and King Dedede, Crash Bandicoot and Dr. Cortex, etc. It eventually cycles back to Sonic 2 but with Eggman as the hero and Sonic as the robot, before being defeated. Each subsequent video starts with a different Sonic protagonist (Tails, Knuckles, Amy, etc) but follows a similar formula with more franchises being added.
• In episode 6 of K-On! The Abridged Series when Yui loses her voice, Ritsu asks several other abridged characters if they know where Yui's voice is, characters such as Abridged Taiga, Abridged Tristan, Abridged Nagisa, Abridged Potato, Abridged Rin, and even Abridged ABRIDGED Ritsu.
• Niconico video list Muv-Luv Crossovers, blends the Unlimited storyline of Muv-Luv, and splices it with the Gunparade March universe, in addition to having characters from Zegapain. Running parallel to the story is the Planet Faery setting of Sentou Yousei Yukikaze, in which Ryu Sohma becomes the copilot to Rei Fukai after his transformation from Takuto Kaneshiro. And both worlds are fighting what seemed to be a combination of JAM, BETA, and/or Festum, and it seems that Sumika is the AI core of Yukikaze, linking the two worlds. The story is told in Visual Novel-style dialogues interspersed with footages from anime/games related to the media, as well as careful splicing to ensure that everything is consistent. The "opening" animation of the series proper is in the second episode, but while it starts with Muv-Luv setting and the beginning of Argento Soma, Yukikaze's arc proper starts at episode 6. As of 12 February 2011, the series has 10 episodes ranging from 20 to 30 minutes. Unfortunately, since the series is very heavy on dialogues, non-Japanese speaking viewers would have quite a problem in following it.
• Many M.U.G.E.N video series on YouTube, when they're not just series of fights, will be a Massive Multiplayer Crossover, such as:
  • The 7th Moon MUGEN series by angeldagdag
  • The HvH MUGEN series by solkenneth003
  • DRB Origins, ODC Wisdom and ECE Mystery by TheOfficialFallen
• Phoenix Wright Anime Attorney is an AMV that's edited in a way that makes it seem as though Phoenix Wright is interacting with characters from various other anime series.
• A mixed-negative example: the infamous cringe-worthy Pooh's Adventures series would count as this, albeit VERY poorly executed. It's done this to the point where it's downright unhealthy.
• The Pursuit of Happiness is a crossover between abridged series, featuring Nullmetal Alchemist, Code Ment, Soul Whatever, None Piece, and Danganronpa Abridged Thing.
• The Disney/NonDisney editor community on YouTube does this often in their videos but seem to be having their own crossover event with a project called The Sixth Sense. It involves an amalgam of plots reminiscent of X-Men, witch hunts, government conspiracies, giving various animated characters powers and having them interact. Already, people have mini-storylines and connections to other characters which will probably continue into the official project.
  • It has also inspired a fanfiction which can be read here, though it is sadly no longer up.
• Supermarioglitchy4's Super Mario 64 Bloopers started out as simple videos with the Super Mario Bros. cast, but as time went on characters from Pokémon, Minecraft, Teletubbies, Sonic the Hedgehog, The Legend of Zelda, Splatoon, and even some original characters joined in.
• The Ultimate Ed Chronicles is this to an absurd degree. The first film featured the Eds teaming up with Kingdom Hearts characters and the Autobots to take down the combined forces of Maleficent and the Decepticons, and that's only the beginning.
• The Ultimate Showdown of Ultimate Destiny.
• There exists a small community of YouTubers, some taking on the identities of fictional characters, who specialize in editing together massive crossover videos. Despite how their videos appear, they try not to use the Pooh's Adventures formula, instead trying to craft original stories or making movie parodies (taking the dialogue of various films/trailers and dubbing them over clips of their favorite fictional characters, who play the parts of the characters in the original work). Members of this community include Ren the God of Humor, Aaron the Viking Meerkat, Princess Rapunzel, The Misfitz, Princess Twilight Sparkle, Jessica Espinoza, and various others.
• The Greatest Fan Film fo All Time.

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