History AdaptationSpeciesChange / FanWorks

* In The Geeky Zoologist's [[Fanfic/JurassicWorld2020 reimagining of Jurassic World]], Owen Grady's raptors are achillobators while they are velociraptors in the film.

* In the ''WesternAnimation/{{Gargoyles}}'' fic "[[https://www.fanfiction.net/s/9672481/1/Guardian-of-the-People Guardian of the People]]", Elisa is a gargoyle from the beginning; the first chapter explores how she was taken in by her 'grandfather' as an egg after most of her gargoyle clan were killed or died of old age, and was essentially raised by the Mazas as a sibling to Derek and Beth after Peter moved to New York due to her slow growth rate.

* ''WebAnimation/{{RWBY}}

* A bunch in the ''WebAnimation/{{RWBY}}''/''Literature/TheHobbit'' FusionFic ''[[https://www.fanfiction.net/s/11852303/1/Rise-of-a-Star-Knight Rise of a Star Knight]]'' and its sequel (and the ''Literature/TheLordOfTheRings'' to its ''Literature/TheHobbit'') ''[[https://www.fanfiction.net/s/12404778/1/Knights-of-Remnant-The-Ring-of-Darkness Knights of Remnant: The Ring of Shadows]]'':
** First, goblins are actually faunus, or rather, [[WasOnceAMan were faunus]], who hide in the mountains and stayed separated from the rest of their species for so long they evolved into something else.
** Thorin and his party are replaced by Jaune and his party of humans and faunus, with the dwarven civilization as a whole replaced by [[TheClan the Valkyrie clan]](as in, Nora Valkyrie's massive extended family, who are master miners, stoneworkers, and resident [[DugTooDeep people who delve to greedily and too deep]])
** Elves are replaced by humans and faunus, depending on the group.
** Uruk-hai, trolls, [[spoiler:Smaug]], and other such things are Grimm, though [[spoiler: Smaug WasOnceAMan, the Mad King of Vale [[TheCorrupter Felix]](yes, ''that'' [[WebAnimation/RedVsBlue Felix]])]].
* Used so much in the ''WebAnimation/{{RWBY}}''/''World of Ere'' story ''[[https://archiveofourown.org/works/9448874/chapters/21376838 Not Your Saint George]]'' that it would be easier to list the ''[=RWBY=]'' characters who have appeared so far that ''haven't'' had their species changed [[note]]Jaune, Jaune's family, Cardin[[/note]]
** Pyrrha is Pyrrhanykos, a young[[note]]Well, young for a dragon. She notes that, for dragons, saying you've been somewhere for thirty years is equivalent to saying you've been there for twenty minutes[[/note]] red dragon.

** [[spoiler: Nora is a goblin, while Ren is a hob (a catchall term for people who are part-orcs)]]
** [[spoiler: Winter and Weiss are [[WingedHumanoid hailene]]]].
** [[spoiler: Blake is a cat hengeyokai]].
* The ''WebAnimation/{{RWBY}}'' fanfiction story ''Fanfic/ValesUnderground'' takes place in a real-world setting. So various [[LittleBitBeastly Faunus]] characters in canon who appear in the story can be assumed to be just plain humans.

* ''Fanfic/ANewProblem'':
** Roba is a pure robot instead of a human/robot.
** Alfe is simply an anthropomorphic dog/anteater, no longer part human.

----

* In the ''WebAnimation/{{RWBY}}''/''Franchise/MarvelCinematicUniverse'' FusionFic ''[[https://www.fanfiction.net/s/11722542/1/In-Shades-of-Red-and-Gold In Shades of Red and Gold]]'', several characters from ''WebAnimation/{{RWBY}}'' are changed from humans or faunus to being [[ComicBook/XMen mutants]] (even though mutants don't exist in the ''Franchise/MarvelCinematicUniverse''), including Ozpin, Velvet, and Blake, and implied with Goodwitch and Coco (possibly also Weiss and team JNPR). As well, Beacon Academy becomes Beacon Institute, the West Coast equivalent of the Xavier Institute, even being cofounded by Ozpin and Xavier. WordOfGod states that Ruby and Yang aren't mutants. Also, Zwei is a RobotDog.
* A bunch in the ''WebAnimation/{{RWBY}}''/''Literature/TheHobbit'' FusionFic ''[[https://www.fanfiction.net/s/11852303/1/Rise-of-a-Star-Knight Rise of a Star Knight]]'' and its sequel (and the ''Literature/TheLordOfTheRings'' to its ''Literature/TheHobbit'') ''[[https://www.fanfiction.net/s/12404778/1/Knights-of-Remnant-The-Ring-of-Darkness Knights of Remnant: The Ring of Shadows]]'':
** First, goblins are actually faunus, or rather, [[WasOnceAMan were faunus]], who hide in the mountains and stayed separated from the rest of their species for so long they evolved into something else.
** Thorin and his party are replaced by Jaune and his party of humans and faunus, with the dwarven civilization as a whole replaced by [[TheClan the Valkyrie clan]](as in, Nora Valkyrie's massive extended family, who are master miners, stoneworkers, and resident [[DugTooDeep people who delve to greedily and too deep]])
** Elves are replaced by humans and faunus, depending on the group.
** Uruk-hai, trolls, [[spoiler:Smaug]], and other such things are Grimm, though [[spoiler: Smaug WasOnceAMan, the Mad King of Vale [[TheCorrupter Felix]](yes, ''that'' [[WebAnimation/RedVsBlue Felix]])]].
* Used so much in the ''WebAnimation/{{RWBY}}''/''World of Ere'' story ''[[https://archiveofourown.org/works/9448874/chapters/21376838 Not Your Saint George]]'' that it would be easier to list the ''[=RWBY=]'' characters who have appeared so far that ''haven't'' had their species changed [[note]]Jaune, Jaune's family, Cardin[[/note]]
** Pyrrha is Pyrrhanykos, a young[[note]]Well, young for a dragon. She notes that, for dragons, saying you've been somewhere for thirty years is equivalent to saying you've been there for twenty minutes[[/note]] red dragon.
** [[spoiler: Ruby, Yang, and their family are werewolves, with Summer, Raven, and Qrow also being [[OurOrcsAreDifferent orcs]]]].
** [[spoiler: Nora is a goblin, while Ren is a hob (a catchall term for people who are part-orcs)]]
** [[spoiler: Winter and Weiss are [[WingedHumanoid hailene]]]].
** [[spoiler: Blake is a cat hengeyokai]].
* The ''WebAnimation/{{RWBY}}'' fanfiction story ''Fanfic/ValesUnderground'' takes place in a real-world setting. So various [[LittleBitBeastly Faunus]] characters in canon who appear in the story can be assumed to be just plain humans.
* In ''Webcomic/{{REMNANTS}}'', Faunus are a HumanSubspecies that mutated generations ago, rather than a separate humanoid species.

** From ''Anime/SpyXFamily'': Anya is an owl Faunus.

* In ''[[https://www.fanfiction.net/s/10304728/1/Boston-Bound-Fae Boston Bound Fae]]'', a crossover with ''Series/LostGirl'' and ''Series/RizzoliAndIsles'', characters like Jane Rizzoli, Barry Frost and Charles Hoyt are all 'reinvented' as Fae; Jane is a wolf-shifter, Frost is a siren, and Hoyt is a Torak (a Fae who feeds on fear the blood of their victims).

** From ''

* ''Fanfic/DarkDarkOceanDark'' is a mundane equivalent of Malachite being forced underneath the ocean by Lapis. In the fic, all the Gems are human, and Lapis instead keeps a kidnapped Jasper locked in her basement.

** Most of the humans in DBZ ''Manga/DragonBallZ'' re-contextualized as [[Franchise/MarvelUniverse Xandarians]]. Yamcha is implied to be partially Loboan, while Launch is a Monoclonal.

** The premise of ''Fanfic/HeartOfTheForest'' is that almost every major character is a different species. Applejack is a deer, Fluttershy is a draconequus, Pinkie Pie and Rainbow Dash are griffons, Rarity is a river serpent (all instead of ponies), and Discord is a hinny (instead of a draconequus).

** * ''[[https://www.fanfiction.net/s/7921003/1/The-HFiles The H-Files]]'' is a {{Crossover}} with ''Series/TheXFiles'' where Mulder and Scully are ponies.

* ''[[https://www.fanfiction.net/s/7921003/1/The-HFiles The H-Files]]'' is a {{Crossover}} between ''Series/TheXFiles'' and ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' where Mulder and Scully are ponies.

* In ''Fanfic/{{Delusions}}'', Celestia and Luna were born as mules before ascending to alicornhood. In [[WesternAnimation/MyLittlePonyFriendshipIsMagic canon]], there's nothing to suggest that they weren't always full-blooded ponies.

* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'':
** ''Fanfic/ADiplomaticVisit'': [[spoiler:In canon, Queen Novo was a hippogriff who changed into a seapony. In this universe, she was always a seapony. The same holds true for her daughter Princess Skystar, her sister Ocean Flow, and her niece and nephew Silverstream and Terramar. Subverted with the siblings' father Sky Beak, whom Spike initially assumes was also a seapony originally, before he corrects him and explains he was born a hippogriff and changed into a seapony with the Pearl of Transformation.]]
** The premise of ''Fanfic/HeartOfTheForest'' is that almost every major character is a different species. Applejack is a deer, Fluttershy is a draconequus, Pinkie Pie and Rainbow Dash are griffons, Rarity is a river serpent (all instead of ponies), and Discord is a hinny (instead of a draconequus).

* ''[[https://www.fimfiction.net/story/494299/the-long-game The Long Game]]'': Hydia, who was originally a human(ish) witch in ''WesternAnimation/MyLittlePonyTheMovie1986'' and ''WesternAnimation/MyLittlePonyAndFriends'', is recast as a lamia.

* In the ''WesternAnimation/MyLittlePonyEquestriaGirls'' films, Spike is a dog in the human world and is the human Twilight's loyal pet. In ''Fanfic/YugiohEQG'' Spike is human like the rest of the characters and is Twilight's adopted little brother.

* ''Fanfic/ADiplomaticVisit'': [[spoiler:In canon, Queen Novo was a hippogriff who changed into a seapony. In this universe, she was always a seapony. The same holds true for her daughter Princess Skystar, her sister Ocean Flow, and her niece and nephew Silverstream and Terramar. Subverted with the siblings' father Sky Beak, whom Spike initially assumes was also a seapony originally, before he corrects him and explains he was born a hippogriff and changed into a seapony with the Pearl of Transformation.]]

** Uruk-hai, trolls, [[spoiler:Smaug]], and other such things are Grimm, though [[spoiler: Smaug WasOnceAMan, the Mad King of Vale [[TheCorrupter Felix]](yes, ''that'' [[Machinima/RedVsBlue Felix]])]].

* ''Fanfic/AllAssortedAnimorphsAUs'': Ax is a werewolf in "What if they all went to [[Franchise/HarryPotter Hogwarts]]?" and a human in "What if they were imprisoned?" and "What if they were pirates?" instead of an [[OurCentaursAreDifferent Andalite]]. All the aliens are humans in "What if they were in the Hunger Games?" and "What if they were in Emelan?" as well.

* In ''Fanfic/{{Daemorphing}}'', Euclid is Nora's [[BondCreatures daemon]] instead of a regular dog. [[spoiler:Also, Tom becomes a Hork-Bajir [[ShapeshifterModeLock nothlit]], a morph he never even acquired in canon.]]

* In the ''Literature/{{Animorphs}}'' fanfic ''Fanfic/APrincessATreehuggerAndASpaceCadetWalkIntoALibrary'', Ax is a human instead of an Andalite.

* ''Fanfic/TheTwilightMan'': A major reveal is that [[spoiler:Mary Joestar]] is a [[HalfHumanHybrid half-human, half Nightman (Pillar Man)]] rather than human like in canon. [[spoiler:This makes her son Johnathan Joestar and his descendents UnevenHybrids with Nightman heritage rather than pure humans]].

* ''Fanfic/TheInfiniteLoops'': Variant loops often have loopers change species, even if there normally aren't multiple species in their loop. In particular, loopers going to the Equestria Loop and vice versa almost always change species ([[FishOutOfWater and it's weirder when they don't]]). Speaking of Equestria, in ''Fanfic/TheMLPLoops'' Silver Spoon ends up going through a lot more of these than normal, to the point that it's surprising when she's an ordinary earth-pony. Twilight assumes Silver's species tag got knocked off in the Crash, but it's too low-priority to be fixed quickly.

* ''Fanfic/{{Daemorphing}}'': Euclid is a daemon instead of a regular dog.

** Aurore Beauréal is a succubus.

* MassiveMultiplayerCrossover ''Fanfic/WithPearlAndRubyGlowing'' takes place in a modern setting, so several non-humans become humans, fantastical pets become real animals (such as [[WesternAnimation/LiloAndStitch Stitch]], an alien that pretends to be a dog, becoming an actual dog), and some animals that aren't convenient for a city are changed to smaller animals ([[WesternAnimation/GravityFalls Waddles]] the pig becoming a guinea pig).

* ''Fanfic/WingsOfTheFallen'': In this fic Tintin and Rastapopoulos go from being normal humans to an angel and a demon respectively.