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Anime And Manga
- In the OVA of Kujibiki Unbalance, Alex is a human character. In the TV series, he's a dog (and also the current student council secretary).
- Lola and Layla in Venus Versus Virus are ageless, artificial humans in the anime but normal girls with psychic powers in the manga.
- In the original Cutey Honey series, Cutey Honey herself was a Ridiculously Human Robot. In the Shoujo adaptation Cutey Honey Flash, she is a human.
- Most of the Human Aliens and Artificial Humans in Lyrical Nanoha were changed into normal humans in Magical Girl Lyrical Nanoha INNOCENT. Yuuno, Zafira, Arf, and Linith were changed to be ordinary pets (Linith was a Decomposite Character who appeared as both a human and a cat).
- In Chilling Adventures of Sabrina the normally human Betty and Veronica from Archie Comics are shown to be witches. Ms Grundle is a witch as well.
- In pre-Infinite Crisis DC Comics continuity both the Champions of Angor/Justifiers and the Extremists were Human Aliens from Angor: an earth-like planet that also had similar technology and pop-culture. In their re-imaginings as the heroes and villains of Earth-8 in both Countdown to Final Crisis and The Multiversity they are normal humans from that universe’s version of Earth.
- Teen Titans: Earth One:
- Ultimate X-Men
- Both John Wraith and Doug Ramsey are humans, not mutants.
- Juggernaut in 616 is often mistaken for a mutant, and his brother (Xavier) is, but his power actually comes from a magic ruby. Here he actually is a mutant.
- Instead of being interdimensionial beings, Mojo's a human and Longshot is a mutant. Sprial is also a mutant, too, instead of a mutated human.
- Lilandra Neramani is the human leader of a Church of Happyology called Shi’ar Enlightenment, rather than the alien ruler of the Shi'ar Empire.
- A sort of example with the post-Zero Hour version of the Legion Of Superheroes Princess Projectra, who goes by Sensor. She's still a member of the royal family of the planet Orando, but the Orandans have gone from humanoid aliens to giant snake aliens.
- The Ultimates:
- In Secret Wars: 1602: Witch Hunter Angela, Angela and Sera are human, not Asgardian and Hevenite. When they meet Gardiner's Men, the 1602 version of the Guardians of the Galaxy, Goodman Root (Groot) and Madame Gomorrah (Gamora) are human, and the Aroughcun (Rocket) is an actual raccoon.
- Keeping with its Demythification schtick, Age of Bronze changes all demigods (and one centaur) to humans.
- The New 52 Justice League storyline "Darkseid War" introduces a version of Ardora, Luthor's love interest from the planet Lexor. Only in this universe, she's Apokaliptian.
- Blubber Bear who was a bear in Wacky Races, in Wacky Raceland is a human man who wears the pelt of a bear that gave him brain damage before the Announcer brought him and Luke into the Race. Similarly, Sawtooth has gone from a Funny Animal beaver to an "androgynous street urchin" with Jaws-from-James Bond style Scary Teeth.
- In Hans Von Hozel's Little Red Riding Hood fic, the Wolf is replaced by a bear.
- Ultimate Spider Woman does this to Spider-Man villain the Chameleon is made from a human (who, depending on how he's written, either a Master of Disguise or a mutated human with Shapeshifting powers) into a mutant, (and the brother of X-Men villain, Mystique.)
- The Last Daughter and the rewrite The Girl Of Tomorrow turn Taylor, a human in canon, into the titular last daughter of Krypton.
- Evangelion 303 turns Rei and Kaworu into humans. In the original show they were Humanoid Abominations.
- Last Child of Krypton turns Shinji Ikari into a Kryptonian. Asuka also becomes one via bio-engineering in the story's second version.
- In the original series, Asuka is fully human. In Superwomen of Eva 2: Lone Heir of Krypton she's half-Kryptonian.
- In the original game, Princess Elise and her father are humans. In Sonic the Hedgehog: Heroes of Mobius, they're Mobian jaguars.
- Many Sonic the Hedgehog fanworks change the human Maria Robotnik into a teenage hedgehog to ship her with Shadow.
- In this rewrite of Avengers: Age of Ultron, Wanda and Pietro Maximoff, who in the film were humans who got their powers through HYDRA's experiments, were changed into mutants who got their powers enhanced by HYDRA's experiments as well as their father being implied to be X-Men villain, Magneto.
- Since this is (or was) comics-canon (see Film - Live-Action below), this may well be the inverse of the trope. Adaptation Species Correction, perhaps...
Film - Animated
- Edgar Rice Burroughs' original Tarzan stories:
- Sabor was a lioness, but in Disney's Tarzan, she was changed to a leopardess. note
- The apes Tarzan lived with weren't gorillas, but a fictional species of ape (or hominid?) called mangani. The mangani were mortal enemies of the bolgani (the mangani's blanket term for gorillas).
- In the original books, Tarzan has a monkey sidekick named Nkima, but in the classic films and live action TV show he has a chimp sidekick named Cheeta. The gorilla Terk from the Disney adaptation is loosely based on them.
- Bambi: The novel's Bambi was a roe deer in (presumably) Austria, but Disney made Bambi a white-tailed deer in Maine because the latter species was more familiar to American audiences.
- In the original Basil of Baker Street books, Professor Ratigan was implied to have been a mouse. In the Disney movie The Great Mouse Detective, his species is changed to a rat to be more in line with his last name.
- In the original Peter Pan, Nana is a Newfoundland, but in the Disney adaptation, she is a Saint Bernard.
- Justice League: Gods And Monsters and its tie-in media made Giganta into a Humongous Mecha and Brainiac into a genetically engineered little boy.
- In the original How to Train Your Dragon books, Toothless was a tiny Common Dragon. In the film, he is now a Night Fury, a rare and powerful dragon type. The books later retconned him into being a young Seadragonus Giganticus Maximus, a powerful, rare type of dragon like the Night Fury.
Film — Live-Action
- In The Film of the Book for Inkheart, Dustfinger's horned martin was changed to a ferret. Because, well, horned martins don't exist.
- In the Harry Potter books, Hagrid's dog Fang is described as a boarhound, which is an old term for a Great Dane. In the movies, Fang is played by a Neapolitan Mastiff. Downplayed as this is a change of breed rather than species.
- Also, in the first movie the species of the snake is changed from boa constrictor to Burmese Python.
- Nagini's species isn't specified in the books, but we do know she's some kind of venomous snake. In the movies, she's also a python (but she's still venomous, even though real pythons aren't).
- In Flatland: The Movie, the women of Flatland are the same shapes as the men, rather than simply lines.
- Happened in the transition from the book The Incredible Journey to the film Homeward Bound: The Incredible Journey. They're all the same breed types as the original, although the dogs have age and personality swapped: Shadow is Luath's breed type (retriever, though Shadow is a Golden and Luath a Labrador) and stone-cold determined personality with Bodger's age, Chance is Bodger's breed type (bully breeds; Chance is an American Bulldog and Bodger an English Bull Terrier) and devil-may-care personality with Luath's young age, and Tao the male Siamese is changed into Sassy the female Himalayan (a Persian/Siamese cross). In both versions, it's the young dog who has a bad run-in with a porcupine and the old dog who almost doesn't make it home at the end.
- In Murders in the Rue Morgue, the killer ape is a gorilla rather than an orangutan, like in the book.
- Due to budget and special effects limitations, Willy Wonka and the Chocolate Factory changed the nut-sorting squirrels of its source novel to geese that lay golden chocolate eggs. Veruca Salt's exit was altered accordingly — instead of being tossed down the rubbish chute by the squirrels, she carelessly stands on top of the trapdoor that "bad eggs" are sent down during her Villain Song. Subsequent adaptations have been able to return to the novel's version of events.
- Marvel Cinematic Universe
- In the Guardians of the Galaxy comics, Drax the Destroyer was originally a human named Arthur Douglas who was turned into a living weapon by Thanos's father, Mentor, after he and his family were killed by the Mad Titan. In the film, he's an alien and Drax is his real name. The sequel will also see Mantis go through the same thing, going from a human from Earth into an alien.
- Thanks to rights issues, the Scarlet Witch and Quicksilver are not depicted as mutants. In Avengers: Age of Ultron, it's shown that they were ordinary humans who received special abilities from experimentation done with Loki's cosmic scepter. This change carried over to the comics, where their powers were Retconned into being the result of experimentation from the High Evolutionary.
- In X-Men: The Last Stand, the Juggernaut is a mutant rather than a human with powers from a magic gem.
- In the comics, Silver Samurai is a mutant. In The Wolverine, Silver Samurai is a Decomposite Character, and both of the resulting characters are humans (one of whom is a martial artist, the other of whom is an old man in a suit of Powered Armor).
- In the comics, Deadpool was a normal human who gained special abilities from genetic experimentation done by Weapon X. In X-Men Origins: Wolverine, he's an outright mutant with enhanced strength and superhuman reflexes. The Deadpool movie splits the difference by making him a human with dormant mutant genes, which are activated after he's experimented on.
- In the comics, Mystique is simply a mutated human, with her only abnormal physical features being her blue skin and yellow eyes. In the movie, she has scales over most of her body and seems to lack nipples, implying that she's part-reptile—much like Wolverine and Sabretooth have lupine features, and Angel has avian features.
- Stuart Little in the book is a weird, small, mouse-looking human, however the movie changed him into actually being a mouse who is adopted by humans.
- Jurassic Park series:
- In the first film, the park's local sauropod is changed from an Apatosaurus to a Brachiosaurus. The only sauropods in the first sequel, The Lost World: Jurassic Park, are Mamenchisaurus. Brachiosaurus returns for a very brief scene in Jurassic Park III (and with a completely different color) and is finally replaced by Apatosaurus in Jurassic World.
- The iconic sick Triceratops from the first movie was a sick Stegosaurus in the novel. This switch was inverted in the sequel, when they used Stegosaurus as the first dinosaurs the main characters interact with, and reduced the Triceratops to the anecdotal appearances they had in the first book.
- In the first book, the dinosaurs that Grant, Lex and Tim watch being hunted by the Tyrannosaurus are the elephant-sized hadrosaurs Maiasaura. Probably because of FX limitations, the Maisaura was changed to horse-sized Gallimimus in the movie. However, the only hadrosaurid in the movie is Parasaurolophus, which we also see in the sequels along with Corythosaurus, but Maiasaura still has to appear yet - probably because it is rather boring looking compared to them.
- It is a matter of debate if the land piranhas in the second movie are Procomsognathus, as in the book, or Compsognathus. They are called the first by a character, but are named one or the other interchangeably in the merchandise.
- The pterosaur aviary (pterosaury?) in Jurassic Park III with the iconic Pteranodon longiceps was based on a scene from the first book involving the Seldom-Seen Species Cearadactylus. The aviary scene in the next movie has Pteranodon (which look different because they are all female this time) and Dimorphodon.
- In general, Jurassic Park III changes the Tyrannosaurus role in the franchise to Spinosaurus, even on the movie's logo. The Spinosaurus boat attack scene was based on a scene involving a Tyrannosaurus in the first book.
- The cammouflaging Big Bad dinos in the second book were Carnotaurus. In Jurassic World, this role is filled by a genetically-engineered hybrid, the Indominus rex. Though Carnotaurus is identified as one of its DNA donors as a Mythology Gag, the Indominus's cammouflage abilities come from something else.
- In Tarnsman of Gor Cabot rides a tarn, which is a giant bird; in other books of the series people also ride tharlarion and kailla, which are land animals. In the films Gor and Outlaw of Gor, people ride horses.
- King Louie from Disney's 1967 adaptation of The Jungle Book was originally an orangutan. For the 2016 live-action movie (also by Disney), he's changed to a Gigantopithecus, as orangutans aren't native to India.
- Baloo is an weird case. The book says that it has brown fur, but his diet is more like an Asian black bear, and the story is set in a place only inhabited by sloth bears. In the 1967 movie he is a grey-furred brown bear and in the 2016 movie he is a brown bear, but is called a "sloth bear" by Bagheera and says that he doesn't need to hibernate and just likes to nap a lot (which is true of sloth bears).
- In Dr. Who and the Daleks the Doctor (referred to as Doctor Who), unlike the main series, is a human scientist instead of a Human Alien Time Lord.
- Madame Dorothea is a mundane in City of Bones, but a witch in The Mortal Instruments: City of Bones.
- Used twice in the film adaptations of Annie:
- The film version of Wolfen alters the title creatures from human-like intelligent wolves into supernatural creature wolves.
- Greystoke: The Legend of Tarzan, Lord of the Apes changes the fictional mangani apes to chimpanzees.
- The unproduced (and completely over the top) script Indiana Jones and the Monkey King has Indiana Jones chasing a tank while riding a rhinoceros. In the film finally developed from that script, Indiana Jones and the Last Crusade, Indy chases the tank on a horse.
- Shin Godzilla's version of its title creature isn't a dinosaur, like past Godzillas, but rather it's a mutated colony of microorganisms.
- In "The Merchant's Tale" from The Canterbury Tales, Pluto and Proserpina, gods of Classical Mythology, are now The Fair Folk.
- Something similar happens in the 14th century poem Sir Orfeo, a Setting Update of the myth of Orpheus and Euridyce, which replaced Hades with an unnamed "king of the Otherworld".
- Variation in Animorphs the short-lived TV series rarely used the signature morphs of the protagonists. Rachel never did her bear morph, Marco never went gorilla, possibly because there wasn't the budget for a ton of CGI and they wanted to use animals they could work with decently well. Then the Transformers toys got into it, with things like a Jake-bear and Jake-stingray toy.
- Agents of S.H.I.E.L.D.:
- In the Secret Warriors comics, both Quake and Slingshot were human women who gained superpowers as a result of having superhuman fathers (Mister Hyde and Griffin, respectively). In the show, they're both Inhumans.
- Likewise, Hive was a human HYDRA agent who was subjected to an experiment involving ravenous parasites that ended up bonding with him. The series has him as an ancient and powerful Inhuman.
- In the comics, Hellfire's powers are supernatural in nature, and stem from him being the grandson of Carter Slade, the original Ghost Rider. In the show, Hellfire is yet another Inhuman.
- In Smallville, Brainiac is not a Coluan, but rather a Kryptonian AI, similar to Superman: The Animated Series.
- Madame Dorothea is a mundane in City of Bones, but "Dot" is a witch in Shadowhunters.
- In the Little House on the Prairie books Jack is an English Bulldog however his breed was changed in the tv adaptation.
- In Once Upon a Time in Wonderland, the character of Elizabeth is inspired by Bill the Lizard in Alice's Adventures in Wonderland, but in addition to being Gender Flipped, she's a human who's nicknamed "Lizard". She seems to be the only talking animal Wonderland character to get this treatment in the series. (A comic book about Once Upon a Time's Mad Hatter also introduced a human March Hare.)
Mythology and Religion
- In The Muppets' Wizard of Oz, Toto is a King Prawn instead of a Dog. Justified, since after Dorothy ends up in Oz, Toto is played by Pepe. Pre-tornado, he's seen as an actual prawn in a goldfish bowl. This trope is averted with the Cowardly Lion, though: he's still a lion, even though his "actor," Fozzie, is a bear.
- In Emmet Otters Jugband Christmas, one of Emmet's bandmates is a raccoon called Wendell Coon. In the Jim Henson adaptation, he becomes Wendell Porcupine.
- In the Scootertrix The Abridged Series, Rarity was changed from being a normal unicorn, to a changeling that defected from her species.
- Teenage Mutant Ninja Turtles
- The Shredder/Oroku Saki was changed to an Utrom, whose real name was Ch'rell, disguising himself as a human in the 2003 series. Although it was eventually revealed that Oroku Saki was once a real human being who lived during the time of ancient Japan, and became the original Tengu Shredder. Ch'rell simply based his human identity on the original Saki.
- Splinter was originally the pet rat of his human owner Hamato Yoshi prior to his mutation. In the 1987 and 2012 cartoon, he was made into a Composite Character where he formerly was Hamato Yoshi himself, before being mutated into a rat.
- Also in the 2012 cartoon, April O'Neill, previously a 100% pure-blooded human in most other TMNT works, is now made half-human, half-Kraang due to being experimented on by them when she was still in her mother's womb. Meanwhile, Irma and Agent Bishop, who were humans in the previous TMNT cartoons they appeared in, respectively get changed to a Kraang in disguise and an Utrom.
- Originally, in the Arthur books, the Tibbles and their grandmother were humans. In the animated series they are bears.
- Applies to Arthur's second grade teacher Mr. Marco. In the books, he was a moose; in the cartoon, he's an aardvark.
- There's a Looney Tunes short where Goldilocks is a mouse and the Three Bears are replaced with the Three Cats (Sylvester and his family).
- The Oddball Couple, a Saturday Morning Cartoon with a cat & dog living together a la The Odd Couple.
- In the comics, Blue Beetle's Evil Counterpart, Black Beetle, is a human who at various times has been hinted to either be a a future version of Jaime Reyes, or Jaime's former friend Hector. In Young Justice, Black Beetle is simply an alien and agent of the Reach.
- X-Men makes a few characters who weren't mutants in the comics into mutants, such as the Purple Man. An inverse example is Silver Samurai, who is a mutant in the comics, but was depicted as a human with a teleportation device in the show.
- X-Men: Evolution split the difference in relation to the Juggernaut. Instead of a full-blooded mutant (seen in X-Men: The Last Stand) or a man given powers by a magical relic (X-Men Comic Books), Juggernaut was described as having a dormant mutant gene that he "awakened with mysticism".
- Likewise, Wolverine and the X-Men makes Nitro into a mutant. In the comics, he was a normal human who was given superpowers by the Kree.
- Iron Man changed Firepower from a man in a Mini-Mecha to a robot.
- Superman: The Animated Series changed Brainiac into a Kryptonian AI, instead of the Coluan he is in the comics.
- In Hulk And The Agents Of SMASH, Sauron is an intelligent pterosaur from the Savage Land (and he's seen in the prehistoric era in "Days of Future Smash"). In the comics he was a human called Karl Lykos who was bitten by a Savage Land pterosaur, and mutated into intelligent-pterosaur form.
- The Imperium, the alien invaders from the first three episodes of Justice League, are heavily based on the White Martians from the comics. Instead of being actually from Mars, they're a species of unknown origin who invaded Mars and wiped out all but one of the natives inhabitants years ago.
- The Trash Pack Mondo TV Cartoon plays for an...interesting version of this idea. As the core chunk of Trashies are Animate Inanimate Objects anyways, Putrid Sardine, originally a can of sardines in the toyline, is instead adapted into a juice box in the cartoon. He still keeps his oozy green juice and dent-formed unibrown, however.
- One of the few things we know about the never fully released Toon Makers Sailor Moon is that Luna from Sailor Moon would have gone from being a black short-haired cat to a white longhaired one.
- My Little Pony: Friendship Is Magic: In G1, Scorpan was a human turned into a monster by Tirek, the G4 Scorpan is a natural-born Gargoyle.
- My Little Pony Tales featured the first canon appearance of Winged Unicorns in My Little Pony. The episode "Up, Up and Away" features the Glow 'n Show Ponies as having wings wings, despite the fact they were pegasus and unicorns in the toyline.
- The remake to Peace on Earth changes the squirrels into mice.
- Rome's eagle, originally a symbol of Zeus, is a golden eagle (Aquila chrysaetos), also called "royal eagle" in some languages. Its use as a symbol was continued by several European states that claimed to be successors of Rome. When the United States gained independence, they deliberatedly chose an eagle symbol as a throwback to Rome, but made it a bald eagle (Haliaaetus leucocephalus), a species only found in North America.