Disputed Pokémon

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There is no solid evidence for or against some parts of this article.
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Reason: Add info on creatures from Pocket Monsters manga here and here, add images

Over the course of the Pokémon series, a number of creatures with traits of Pokémon have appeared that are not the same as any known Pokémon. Their status as Pokémon is often disputed. There are also some Pokémon, such as the original Legendary beasts prior to their reincarnation by Ho-Oh, which have not been identified. For unknown Pokémon exclusive to pre-release material, see List of unused Pokémon and character designs; for creatures primarily considered to be animals, see Animals in the Pokémon world.

List of disputed Pokémon

In the games

 
Egg and Chick
In Pokémon Red and Green, there is unused text for extra Badges, "Egg", "Chick", "Bronze" "Silver", "Gold", and what appears to be the names of unused Trainer classes. These strings are defined in the ROM directly after floor names, which follow on from item names, meaning that the unused text can be forced as glitch items. The text remains untranslated in the localised Pokémon Red and Blue, and Egg and Chick are kept with the names "たまご" and "ひよこ" respectively. This results in illegible text in the English versions, because the character table for the localised Generation I games is incompatible with that of Pokémon Red and Green. It is unknown what "Egg" and "Chick" would have referred to, or whether the concept has any relation to Pokémon Eggs; notably, early Capsule Monsters artwork features an unknown creature fleeing from an egg. The concept may also be reminiscent of the Fresh egg and Chick items in EarthBound, in which the player would keep the Egg until it hatched into a Chick, and then raise the Chicken and eventually sell it. EarthBound was a game that Ape Inc. developed, the company that eventually became Creatures, Inc.
Debut Pokémon Red and Green beta
 
Substitute Doll
While the Substitute doll originally looked similar to Rhydon, the design evolved over time to a more neutral design. In Super Smash Bros. for Nintendo 3DS/Wii U, its trophy description points out that, while it looks and gets attacked like a Pokémon, it is not actually one. The doll has gone on to receive several pieces of merchandise, including its own plush doll and clothes.
Debut Pokémon Red and Green Versions
 
Baby Kangaskhan
Main article: Kangaskhan (Pokémon)

Kangaskhan carries around a small blue baby Kangaskhan in its pouch. The baby Kangaskhan lacks the ridges and patches on its mother's body, and its small fangs are not visible outside of its mouth. All Kangaskhan born from Eggs have a baby already in the pouch. As part of Kangaskhan's Mega Evolution, the baby leaves its pouch and is capable of fighting alongside its mother, thanks to Mega Kangaskhan's Parental Bond Ability.

Debut Pokémon Red and Green Versions
 
Original Legendary beasts
Main article: Legendary beasts

It is said that the Legendary beasts Raikou, Entei, and Suicune were reincarnated by Ho-Oh after they died in the fire that burned down the Brass Tower. They were said to represent the lightning that struck the tower (Raikou), the fire that burned the tower down (Entei), and the rain that put it out (Suicune). While it is unknown in the games if these three were already a Raikou, Entei, and Suicune before they were revived, the Pokémon Generations short The Reawakening shows them as three nameless Pokémon.

Debut The Reawakening
 

 
Bones worn by Vullaby and Mandibuzz
:Main articles: Vullaby (Pokémon) and Mandibuzz (Pokémon)

According to interviews with Ken Sugimori in Nintendo Dream, the bones that Vullaby and Mandibuzz wear are those of other Pokémon. However, it is not stated which Pokémon they are from, but they bear a notable resemblance to a human skull.

Pokédex entries say that most of the bones Mandibuzz uses to decorate its nest come from Cubone. These bones could also take part in Vullaby and Mandibuzz's design.

Debut Pokémon Black and White Versions
 
Original dragon
Main article: Tao trio

According to legend, Reshiram and Zekrom were once a single powerful dragon Pokémon used by twin heroes in order to create the Unova region. However, the brothers each sought something different in life—truth for the older brother and ideals for the younger—and they began to argue, then fight, over whose side was right. The single dragon, in response, split into two Pokémon: Reshiram, who sided with the older twin, and Zekrom, who sided with the younger twin. It is revealed in Pokémon Black 2 and White 2 that when the original dragon split into Reshiram and Zekrom, a third dragon, Kyurem, was "created" from the leftovers. The Pokédex entry for Kyurem also states that it is waiting for a hero to fill in the missing parts of its body with "truth or ideals". Kyurem can be fused with Reshiram or Zekrom to form White Kyurem or Black Kyurem, respectively, using the DNA Splicers, but the appearance of the original dragon Pokémon's complete form is unknown. In The Lesson Ends Here, the Original Dragon is briefly seen as a winged silhouette alongside the two heroes.

Debut The Lesson Ends Here
 
Original Genesect
Main article: Genesect (Pokémon)

Despite Genesect being a cyborg Pokémon, it was not one originally; rather, it was a prehistoric Pokémon that lived 300 million years ago and was feared as a powerful hunter. The modern Genesect was created by Team Plasma by reviving it from a Fossil and cybernetically enhancing it, including by installing the cannon on its back. Although the full appearance of Genesect's original form has not been seen, fossilized parts of it that bear a great similarity to the bodily structure of the modern Genesect appear in Genesect and the Legend Awakened and its manga adaptation.

Debut Pokémon Black and White Versions
 
Original Generation VIII Fossil Pokémon
Main articles: Dracozolt (Pokémon), Arctozolt (Pokémon), Dracovish (Pokémon), and Arctovish (Pokémon)

In Pokémon Sword and Shield, there are four types of Fossils, all of which appear to be incomplete, as they consist only of either a top half or a bottom half. Cara Liss can combine two Fossils that are opposite halves into one Pokémon, allowing half of the original prehistoric Pokémon to be seen.

  • The Fossilized Drake, which forms the bottom halves of Dracozolt and Dracovish, appears to be from a heavy, spiked, dinosaur-like Dragon-type Pokémon.
  • The Fossilized Dino, which forms the bottom halves of Arctozolt and Arctovish, appears to be from an Ice-type marine Pokémon.
  • The Fossilized Bird, which forms the top halves of Dracozolt and Arctozolt, appears to be from a light, bird-like Electric-type Pokémon.
  • The Fossilized Fish, which forms the top halves of Dracovish and Arctovish, appears to be from a marine, placoderm-like Water-type Pokémon.

However, the Pokédex entries for all four of the Generation VIII Fossil Pokémon suggest that they lived in prehistoric times, as does Cara Liss upon reviving one of them, though this information is somewhat implied to be inaccurate.

Debut Pokémon Sword and Shield
 
Original form of Dreepy
Main article: Dreepy (Pokémon)
Dreepy's Pokédex entry in Pokémon Sword states that it originally lived in prehistoric seas and has been reborn as a ghost Pokémon. Its ancient form has never been seen, so it is unknown how similar it is to its current form, but it is implied to not be a Ghost Type.
Debut Pokémon Sword and Shield
 
Arceus's true form

Main article: Arceus (Pokémon)
Arceus's conversation with the player after it is defeated in Legends: Arceus, heavily implies that the physical, goat-like form first seen in Pokémon Diamond and Pearl is not the actual Arceus, but only a piece of its whole being. In Legends: Arceus's opening scene, Arceus speaks to the player in its home dimension: there, it appears as a large amount of bright golden energy shaped like its main form. This unknown form may be Arceus's true appearance.
Debut Pokémon Legends: Arceus
 
Scarlet Book imagined Pokémon

In the Scarlet Book in Pokémon Scarlet, a sketch of an imaginary Pokémon inspired by the Paradox Pokémon found in Area Zero is seen, drawn by a member of the Area Zero Expedition team. This Pokémon resembles the Legendary beasts: Raikou, Entei, and Suicune and their ancient counterparts: Walking Wake, Gouging Fire and Raging Bolt.

It's implied that this sketch was drawn by a member of the Area Zero Expedition team that managed to catch a glimpse of each of the Paradox Pokémon, Walking Wake, Gouging Fire and Raging Bolt during their exploration in Area Zero.

Debut Pokémon Scarlet
 
Violet Book imagined Pokémon

In the Violet Book in Pokémon Violet, a sketch of an imaginary Pokémon inspired by the Paradox Pokémon found in Area Zero is seen, drawn by a member of the Area Zero Expedition team. This Pokémon resembles the Swords of Justice: Cobalion, Terrakion, and Virizion and their futuristic counterparts: Iron Leaves, Iron Boulder and Iron Crown.

It's implied that this sketch was drawn by a member of the Area Zero Expedition team that managed to catch a glimpse of each of the Paradox Pokémon, Iron Leaves, Iron Boulder and Iron Crown during their exploration in Area Zero.

Debut Pokémon Violet
 
Original Loyal Three
Main article: Loyal Three

In Kitakami myths, it is said that the Pokémon that formed the Loyal Three were once below-average Pokémon: Okidogi was small and weak, Munkidori was clumsy and dim-witted, and Fezandipiti had short, dull feathers. The Toxic Chains wrapped around their bodies granted them the strength, cleverness, and beauty that they respectively wished for. It's later revealed that Pecharunt was the one that transformed the trio with its Toxic Chains, while also using its Binding Mochi to tame them, so they could help it complete its journey to steal a brilliant set of masks desired by its caretakers.

The trio's original appearance is currently unknown and their Typings are implied to be completely different from the ones they now possess. What appear to be their original forms are depicted alongside a human child on Kitakami's signboards.

Debut The Hidden Treasure of Area Zero Part 1: The Teal Mask
 
Unnamed TCG creature
A silhouette possibly of a Pokémon was discovered in the coding of the Pokémon Trading Card Game Online. This silhouette was discovered in the navigation bar on the game's tutorial page, combined with images of the Unova starter Pokémon. No additional information on the silhouette was contained in the source code of the tutorial's Flash file. According to Serena Robar, a community manager for The Pokémon Company International, it is not an actual Pokémon and is a placeholder image that wasn't removed after the code was decompiled.
Debut Pokémon Trading Card Game Online

In the anime

 
Venustoise
In The Ghost of Maiden's Peak, a Gastly with the ability to create illusions solid enough to attack people created a crossbreed of a Blastoise and a Venusaur, calling it a "Venustoise" (Japanese: フシギックス Fushigix).
Debut The Ghost of Maiden's Peak
 
Unnamed bear
The only known information about this creature is from its brief appearance in The Ancient Puzzle of Pokémopolis. It seems to be a bear with decorative markings covering its body. Since markings like this are also present on the other Pokémopolis Pokémon featured in the episode like Gengar and Alakazam, it is unlikely to have been a normal feature.
Debut The Puzzle of Pokémopolis
 
Unnamed arachnid
This creature made its sole appearance in The Superhero Secret. It seems to be a giant yellow spider, with four red compound eyes, two antennae on its head, and a mouth with four large fangs. Its thorax has eight long, brown legs. Its abdomen is much larger relative to the rest of it body, with two thin, black stripes. Its cry is a screech, not unlike Victreebel's. The nature of its appearance (in a Gligarman movie) would appear to indicate it may be a fictional monster or Pokémon, and whether it is supposed to be portrayed by a real Pokémon, a mecha, or simply special effects is unclear, though its movements and cry give it an extremely organic appearance. Due to its rather early appearance in the Johto series of the anime, it is unlikely to have been intended to be in the games, and can be considered to be an anime-exclusive creature.
Debut The Superhero Secret
 
Unnamed fish

This is the only representation in the anime, albeit in statue form, of the aquatic life that Kabutops is said to have feasted on in most Pokédex entries since Pokémon Red and Blue.

Kabutops and the fish first appeared in art from the Pocket Monsters Encyclopedia, and bears some similarities to the silhouette on the Neo Genesis card Super Rod.

Debut Fossil Fools
 
Recurring fossil/artifact
This clay artifact that looks like a Pokémon appeared in Fossil Fools and then again over nine-and-a-half years later in Bucking the Treasure Trend!. Professor Oak descibes it as an "ancient Pokémon fossil [or] artifact".

It is similar to the Clay Doll Pokémon Baltoy and Claydol and thus may have been based on shakōki-dogū, clay figurines from the Jōmon period of Japanese history.

Debut Fossil Fools
 
Legendary water Pokémon
In a sequence where the main characters see their dreams for the future, Misty sees herself chasing an unknown "legendary water Pokémon". The only part of the Pokémon the viewer sees is a giant fin, which is reminiscent to that of the then-unreleased Mega Gyarados.
Debut Enlighten Up!
 
Unidentified Unown
Main article: Unown (Pokémon)

Unreleased Unown seen on Professor Oak's computer. Due to the introduction of two additional Unown forms in Generation III, some fans have speculated that these may have been very early prototypes for new forms of Unown. Some of the Unown resemble various Greek and Cyrillic letters, namely Я, Ω, Σ, б, Д, ω, Π, and σ.

Debut Spell of the Unown: Entei
 
Unnamed fairy

An unnamed fairy was seen in Molly Hale's book of Legendary Pokémon in Spell of the Unown: Entei. It has some similarities to Beautifly.

Debut Spell of the Unown: Entei
 
Unnamed sun

An unnamed sun was seen in Molly Hale's book of Legendary Pokémon in Spell of the Unown: Entei. The only known Legendary Pokémon related to the sun is Solgaleo.

Debut Spell of the Unown: Entei
 
Unnamed monster attacking Alto Mare
An evil monster that attacked the city of Alto Mare was seen in the Japanese version of Pokémon Heroes: Latios & Latias. The storybook-style segment of the movie, which told the story of the origin of the Soul Dew and Alto Mare's ancient history, was completely cut from the dub.
Debut Pokémon Heroes: Latios & Latias
 
Mismagius-Rayquaza fusion

In Malice In Wonderland!, a wild Mismagius created an illusory Rayquaza belonging to the fake Cynthia. When Ash and his friends discovered that it was all just an illusion, it combined itself with its Rayquaza illusion.

Debut Malice In Wonderland!
 
Unknown cat creature
In Pokémon Origins, an unknown cat-like creature with draconic wings appears briefly in Brock's Gym during the first episode.
Debut File 1: Red
 
Baby Celesteela
Main article: Celesteela (Pokémon)

In this episode, Sophocles retells his favorite legend which includes a "Princess Kaguya" who is represented by what looks like a "baby" version of Celesteela. It resembles a bamboo shoot and a swaddled infant.

Debut Rise and Shine, Starship!

In the manga

The Electric Tale of Pikachu

 
Unknown Water type Pokémon.
There are a number of unidentified Water-type Pokémon at the Cerulean Gym. One of the most notable is a baleen whale-like Pokémon seen in the aquarium. It has three sets of flippers, coincidentally making it appear very similar to the much-later introduced Wailord. Others include an octopus Pokémon that somewhat resembles Tentacool, the fish located just underneath the octopus Pokémon, and others swimming around the glass.
Debut Play Misty For Me

Magical Pokémon Journey

 
Marin
Marin (Japanese: マリン Marin) is a Pokémon appearing in the Magical Pokémon Journey manga. It appears only on the title page of The Best Gift Ever. According to commentary by Yumi Tsukirino, Marin was designed by a fan in a "draw Pikachu's friend" contest in Japan held by Ciao magazine (Japanese: ちゃお) and first published in the December 1998 issue of the same magazine in which the cover page is presented in color, and Marin's body is shown to be entirely blue.
Debut The Best Gift Ever

Pokémon Adventures

 
Thu-Fi-Zer
Main article: Thu-Fi-Zer

Thu-Fi-Zer (サ・ファイ・ザー Thu-Fi-Zer) was the result of a Team Rocket experiment created by fusing the three legendary birdsArticuno, Zapdos, and Moltres—in the Pokémon Adventures manga.

Debut The Winged Legends
 

 
Dialga/Palkia statue

In the Pokémon Adventures manga, the statue in Eterna City is neither Dialga or Palkia but a combination of the two statues. This is a reflection of the statue's appearance in Pokémon Diamond and Pearl and Pokémon Platinum being ambiguously shaped, in order to represent a different member of the duo in each game with a different tile palette. In Pokémon Brilliant Diamond and Shining Pearl, the statue was redesigned to be an explicit fusion between the two, similarly to how it appears in the manga.

After seeing the two Pokémon for the first time in Spear Pillar, Pearl theorized that the statue could represent how ancient people saw the two Pokémon fighting inside a distortion of space and time which led them to believe it was one Pokémon.

Debut Ring Around the Roserade I

Pokémon Pocket Monsters

 
Unnamed butterflies

On the cover of the first chapter Red is shown surrounded by three stylized and mostly identical butterfly-like creatures with different patterns on their wings. Their overall shape and coloration gimmick quite noticeably resemble that of Vivillon.

Debut Introducing the Pokémon Clefairy!!
 
Oak's Pokémon collection
Ten unidentified Pokémon are shown on page 21 where Clefairy accidentally destroys Professor Oak's lab. One of them resembles Slowbro with Gligar's head, other either have too little similarities with any known Pokémon or resemble lots of them at once.
Debut Introducing the Pokémon Clefairy!!
 
Red's unnamed Pokémon
This unknown Pokémon was captured by Red in The Big Battle In The Viridian Forest!!. It was his second Pokémon, after Clefairy. It is never named and the only other thing known about this Pokémon is that it is supposedly very weak. It escaped from its Poké Ball in the same chapter. Although it is commonly seen as a Bug-type by the fandom, it is most likely a really off-model Diglett as later representations of Diglett by Anakubo seem to confirm.
Debut The Big Battle In The Viridian Forest!!
 
Three-eyed Persian
Main article: Persian (Pokémon)

A Persian with a third eye in the place where its gem would normally be appeared in The Big Battle In The Viridian Forest!!.

Debut The Big Battle In The Viridian Forest!!
 
Brock's Pokémon collection
Brock is shown with a large Pokémon collection at the Pewter Gym. Many of them are not identifiable as currently known Pokémon. One of them on the top left shelf resembles the unnamed bug-like Pokémon encountered by Red earlier in the manga.
Debut Bring Down the Powerful Opponent Onix!!

Other

 
Baby Nidoran
Main articles: Nidoran♀ (Pokémon) and Nidoran♂ (Pokémon)

The Pocket Monsters Encyclopedia makes reference to Baby Nidoran, which were later seen on a 1997 ad for Pokémon Battoen.

Debut Pokémon Batoen
 
MechaMew2
Main article: MechaMew2

MechaMew2 is a Robotic Pokémon seen only in Pokémon Live!. It is considered by its creator Giovanni to be the most powerful Pokémon in existence. Giovanni promised Trainers the very rare Diamond Badge to anyone who could defeat it. MechaMew2 is based on Mewtwo, another Pokémon whose creation was ordered by Giovanni. It destroys itself at the end of the show after learning an attack of love, caring, and friendship.
Debut Pokémon Live!

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