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Fusion Fic

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A Fusion Fic is a variety of crossover fic where two or more works are merged together into one (hopefully) cohesive setting. The most common types are:

  • Transplanted Character Fic: The main characters of work A are placed in the setting of work B; they may re-enact work B's plot with some changes, or go about an entirely new plot.
  • Film Fic: The characters of work A are actors playing out the plot of work B.
  • Setting Merge: Two different settings are brought together in some way. This can be something as simple a secret connection popping up, all the way up to creating a completely new setting using elements of the two.
  • Complete Merge: As above, but the two casts are also melded into Composite Characters.

Sometimes overlaps with Meta Fic and Elsewhere Fic. Compare the more typical Intercontinuity Crossover.

See also Role Swap AU, where the characters within a single work switch roles with each other.


  • A rare commercial variant of this would be the "Amalgam Universe" jointly created by Marvel and DC, in which their two universes and their inhabitants were merged in a literal fusion, where "Character X + Character Y = Character Z, who partakes of both". For example, Doctor Doom and Doomsday combine to form "Doctor Doomsday", Batman and Wolverine turn into "Dark Claw", Captain America and Superman become "Super-Soldier", etc.
  • The Avengers fic The Snow Queen is the Hans Christian Andersen story The Snow Queen told with Captain America as Gerda, Iron Man as Kay, and various Avengers, Avengers villains, and other superheroes as all the supporting characters, several of whom don't appear in the original story, but fit perfectly into the original story's various settings. It's written in a very authentic, fairy-tale-ish style similar to Andersen's, and Avengers fans will take great delight in recognizing which Marvel characters the usually vaguely described and nameless or ambiguously-named supporting characters are supposed to be.
  • A Different Kind of Truth has Johnny Joestar from Part 7 of JoJo's Bizarre Adventure replace the Silent Protagonist of Persona 4, disability and bitterness included. It also makes Personas closer to Stands.
  • Digimon Fusion Kai intertwines the Digimon and Dragon Ball Z into a long-running fusion series. It has been previously and been simply called Digimon Fusion (not to be confused with the English language version of Xros Wars) or D-Fusion in the past. As of 2010, it has been revived and rebranded with the Kai label.
  • Dinner For One Mouse is an otherwise unaltered Dinner for One featuring the main original characters from the Chip 'n Dale: Rescue Rangers fanfic Closer Than a Brother playing that old Vaudeville sketch. The actress Sophia Marskov stars as Miss Sophie, and her butler Jules Crissen plays James. It was even written, greenlit by the author of Closer Than a Brother, and published on New Year's Eve 2006.
  • Obscure doujinshi series Mythic Quest has a whole non-canonical edition crossing over with .hack, which involves Anaya as Emma Weilant and John as Harald Hoerwick, along with other omakes of Balmung as their son and .hacks Aura as their daughter.
  • "It's Five By Five" is a crossover of Dragon Age II with Angel. It features Anders/Vengeance as Angel/Angelus, Sebastian as Holtz, Female Hawke as Buffy, Alistair as the Mayor of Sunnydale, and Carver as a vampire, among others.
  • The Endless Pantheon fanfic series combines The Dresden Files and Stargate SG-1. The Goa'uld are a race of godlings who fell from grace millennia ago after a disastrous war with the faerie Courts, alien technology is actually highly-advanced Magitek, and Goa'uld once prized wizards, or hok'taur, as the perfect host. After a trip into the Nevernever dumps him on a Goa'uld world, Harry Dresden ends up accidentally usurping a System Lord's mantle and starts contributing to the galactic chaos SG-1 kicked off.
  • The First Saniwa, a Touken Ranbu/Onmyoji crossover that merges aspects of both games' canons and uses one game's canon to explain the other's. For example, Yorimitsu is the ancestor of the present day saniwa, the canonical fact that Onigiri isn't actually the personification of the sword he represents allows him and Higekiri to exist in the same universe, and Kuro Seimei is actually the work of Historical Revisionists.
  • A Goddess Comes to Call is a fusion between Bubblegum Crisis and Ah! My Goddess, where Linna is the one who accidentally summons Belldandy and wishes that she would stay by her side forever - Keichii instead wishes for the girl who would be perfect for him, and ends up with Chihiro Fujimi.
  • Inside Falls is a fanfic that combines characters from many works into the story of Gravity Falls, but most of the main cast is composed by characters from Undertale and Steven Universe. Giving a example with the fifth main characters, Chara replaces Dipper, Frisk replaces Mabel, Pearl replaces Stan, Asriel replaces Soos and Lapis replaces Wendy.
  • A Man of Iron is a crossover that puts various characters from the Marvel Comics into the world of A Song of Ice and Fire/Game of Thrones and adapts them to the Medieval European Fantasy setting; in particular, Tony Stark is Ned Stark's cousin, and he's the mysterious knight known as "Iron Man".
  • The Fan Fic Martian Manhunter is an interesting case. No characters are replaced; rather, Veronica Mars, along with her backstory and supporting cast, are shoehorned into the background of Buffy the Vampire Slayer's Sunnydale... The twist is she still has all her Neptune memories, including who killed Lily, and the entire series of Buffy the Vampire Slayer, which to her was, until a certain point, entirely fictional.
  • Mercedes Lackey wrote the short story "Moving Targets", which is a fusion of Heralds of Valdemar Valdemar and Scooby-Doo. It has four Herald trainees and a kyree in a green flower-painted wagon solving a "Scooby-Doo" Hoax. It even includes the line "And I would have gotten away with it, too, if it hadn't been for you meddling Heralds".
  • Tears of Revelry is the story of Mobile Suit Gundam Wing told in the world of Avatar: The Last Airbender as a sequel of sorts instead of The Legend of Korra. The main events start 195 years after A:TLA concludes, and while the plot changes course eventually, the overall story remains. Supplemental material can be found in Tales From Gundam Island.
  • My Hero School Adventure Is All Wrong As Expected is a story that integrates the Ore Gairu cast as native inhabitants of the My Hero Academia world. To wit, Hachiman, Yukino, Yui, Hayato, Yumiko, and Tobe are Class 1-A students, Orimoto, Ebina, and Iroha are in Class 1-B, Saika and the rest of Hayama's posse enter General Studies, and Saki Kawasaki is in Support. For others, Yukino's sister is a successful Pro Hero and U.A. High alumna, and Hiratsuka-sensei works as an Investigative Hero.
  • Miraculous: The Phoenix Rises is an interesting case. It's basically if Persona 5 were set in the Miraculous universe, with a falsely accused teen forming a team of supernatural vigilantes to fight social disruption. Of course, another layer is added when it becomes quickly apparent that the cast is largely comprised of expies of the cast of SuperMarioLogan of all things (i.e. Morgan being jeffy, Max being Bowser Jr., etc.).
  • In My Huntsman Academia, the heroes and heroes-in-training of My Hero Academia are retooled into Huntsmen and Huntresses-in-training. In addition, the concept of being "Quirkless" is introduced as being "Broken" or a "Moon Child", meaning that one's soul is so weak that they'll never produce an Aura or a Semblance.
  • Supah Nario Bros is Naruto if all the characters were mixed with Super Mario Bros. characters (Naruto becomes Nario, Sasuke becomes Princess Toadsuke, Lee becomes Leegi and so on).
  • In Necessary to Win, various Saki characters attend the Girls und Panzer schools. For example, the main characters at Oarai Academy have two additional teams- one consisting of the Saki characters from Kiyosumi, and the other consisting of those from Tsuruga. Various characters from each series contrast with each other, such as Maho and Teru's relationships with their respective younger sisters.
  • In Neither a Bird nor a Plane, it's Deku!, Izuku Midoriya is a Superman-in-the-making, but the history of My Hero Academia is meshed with the history of DC Comics, resulting in numerous other changes (i.e. Batman and Wonder Woman being active decades before Izuku arrived on Earth, Firestorm is Japanese, ect.) to the established history of both series.
  • Paradoxus: The Setting Merge flavor, to be specific. Azeroth and Magix now happen to exist in the same multi-dimensional universe. It's just they are too far apart that, normally, they would've never interacted at all. Here we have Galadwen and Eudora's constant interdimensional traveling and meddling and Daphne's time travel shenanigans, so things are definitely not normal (more like deranged). Now, there are already some canon points that keep this idea within the realm of possibility: there are elves in both franchises, interdimensional traveling is confirmed and used in both of them, and both of them have entities capable of creating entire dimensions (the First Ones for World of Warcraft and the Great Dragon for Winx Club). Though it's worth noting the Great Dragon is not equal to the First Ones, but to the Titans (like Sargeras), which helps to even out the power scales and avoid a Power Creep, Power Seep scenario and allows for the teaming-up plot this crossover roots from.
  • Star Mares is a fusion of My Little Pony: Friendship Is Magic and Star Wars, positing a potential future of Equestria in which it has become a galaxy-spanning empire recently fallen into tyranny after the fall of the alicorn princesses (who serve the same role as the Jedi in this rendition). Instead of following the canon storyline of the Star Wars films, it relates the misadventures of a motley assortment of background ponies.
  • In the Swedish gaming mag Sinkadus, RPG writer Anders Blixt wrote a short story fusing Star Wars and The Lord of the Rings, entitled (in English translation) "Lord of the Rings part IV: A New Hope". It featured Obi-Wan Gandalf and Aragorn Solo leading a bunch of Jawas down into Mordor, eventually encountering "Darth Angmar, the right hand of Emperor Sauron himself!" Who is the daddy of one of the Jawas.
  • This And That has the City actually be apart of the setting of Runterra, with the Outskirts acting as a buffer zone that separates the continent from the rest of the world.


Video Example(s):


How it differs from an xover

ColeyDoesThings explains Fallout Equestria, how it's a Fusion Fic, and how it differs from being a mere crossover.

How well does it match the trope?

3.71 (7 votes)

Example of:

Main / FusionFic

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