List of Pokémon with form differences
Some Pokémon have major variations between individuals, known as forms. These variations all have differing appearances and are recognized by the Pokédex. The process of form change allows some Pokémon to change between their different forms, such as with Castform, while other Pokémon have forms that they cannot change between, such as Unown. Other types of form differences include gender differences, regional forms, Mega Evolutions, and Gigantamax forms.
Overview

Form differences were introduced in Generation II, in which Unown was the only Pokémon to have them. All subsequent generations have introduced multiple Pokémon with form differences. Pokémon able to change between their forms were first introduced in Generation III.
At times, these differences are purely cosmetic and have no bearing on the Pokémon's attributes besides its appearance; however, several Pokémon differ in stats, type, Ability, moves they can learn, etc., depending on their form. Among these are several Legendary and Mythical Pokémon, whose alternate forms are usually named using the French word "Forme" instead.
Starting in Pokémon HeartGold and SoulSilver, every official different form has a name given by the Pokédex, though Arceus, Genesect, and Furfrou's alternate forms were not recognized separately in the Pokédex until Pokémon Omega Ruby and Alpha Sapphire. In Generations II, III, and IV, whichever form is encountered first will be the sprite displayed in the Pokédex by default; for example, if West Sea Shellos was encountered first, its sprite will appear in the Pokédex by default, whereas if East Sea Shellos was encountered first, its sprite will. In Generation II, the Pokédex has a separate Unown Mode to show the forms of Unown. In Generation IV, the "forms" section was added to the individual entries of each Pokémon, showing form differences that have been encountered, as well as gender differences. In Generation V, the forms section returns and displays Shiny Pokémon as separate forms (if they have been encountered); additionally, the sprite displayed in the Pokédex can be changed using the forms section. In Pokémon Black and White, the forms section is only available after interacting with Cedric Juniper in Mistralton City, while in Pokémon Black 2 and White 2, it is available from the start. Starting in Generation VI, the Pokédex does not have a separate forms section; instead, a Pokémon's forms (including Shiny forms and gender differences) that have been encountered can be switched between in the Pokémon's entry, and this changes the image shown in the Pokédex.
Additionally, there exist form-like transformations and technical forms that are not recognized by the Pokédex, but otherwise appear or behave like unique forms or are treated as such in game code.
Pokémon with multiple forms
Pikachu
Cosplay Pikachu
Exclusive to Omega Ruby and Alpha Sapphire, a unique Pikachu known as the Cosplay Pikachu can change forms by changing its costume at a Contest Hall. Each outfit allows the Cosplay Pikachu to learn an exclusive move.
For more details, see Pikachu → Form data.
Pikachu in a cap
Pikachu in a cap cannot change forms. These Pikachu:
- Are able to use the Z-Move 10,000,000 Volt Thunderbolt.
- Have a different cry than regular Pikachu.
For more details, see Pikachu → Form data.
Paldean Tauros
In Paldea, Tauros has three regional forms, all named Paldean Tauros, who are differenciated by a breed. They cannot change between these forms, however their level-up moves and the type of Raging Bull differs depending on the form.
For more details, see Tauros → Form data.
Pichu
Both forms of Pichu cannot change into other forms.
The Spiky-Eared Pichu, exclusive to Pokémon HeartGold and SoulSilver, has unique Pokéathlon performance stats from those of regular Pichu. It cannot be traded or evolved.
For more details, see Pichu → Form data.
Unown
Unown cannot change forms. The Pokéathlon performance stats of the punctuation forms (! and ?) differ from those of the alphabetical forms.
For more details, see Unown → Form data.
Castform
Castform can change forms based on the weather in battles due to its Ability Forecast.
For more details, see Castform → Form data.
Kyogre and Groudon
Kyogre can temporarily undergo Primal Reversion if it is holding a Blue Orb in battle.
- Has different base stats, Ability, and cry from Kyogre's base form.
Groudon can temporarily undergo Primal Reversion if it is holding a Red Orb in battle.
- Has different base stats, Ability, cry, and type from Groudon's base form.
For more details, see Kyogre → Form data and Groudon → Form data.
Deoxys
Deoxys can change forms by interacting with certain meteorites.
- Have different base stats and level-up movesets from regular Deoxys.
For more details, see Deoxys → Form data.
Burmy and Wormadam
Burmy can change forms depending on the environment in which it last participated in a battle.
Wormadam cannot change forms.
- Have different base stats and level-up movesets from regular Wormadam.
For more details, see Burmy → Form data and Wormadam → Form data.
Cherrim
Cherrim can change forms depending on the weather in battle.
For more details, see Cherrim → Form data.
Shellos and Gastrodon
Shellos and Gastrodon cannot change forms, however in some games the form of the Pokémon is dependant on the location it was found in.
For more details, see Shellos → Form data and Gastrodon → Form data.
Rotom
Rotom can change forms based on the appliance it is possessing.
For more details, see Rotom → Form data.
Dialga, Palkia, and Giratina
The Pokémon of myth each have two forms, with their secondary form being known as an Origin Forme. Giratina's base form is known as its Altered Forme.
Dialga and Palkia can change into their Origin Forme by being given an Adamant Crystal and Lustrous Globe respectively.
- They have different base stats from their base forms.
Giratina can change forms by being given a Griseous Orb (before Pokémon Legends: Arceus), or by being given a Griseous Core (starting in Generation IX).
- It has different base stats and Ability from Altered Forme Giratina.
For more details, see Dialga → Form data, Palkia → Form data, and Giratina → Form data.
Shaymin
Shaymin can change into its Sky Forme by being exposed to a Gracidea.
- It has different base stats, Ability, cry, level-up moveset, and type from Land Forme Shaymin.
For more details, see Shaymin → Form data.
Arceus
Arceus can change forms by being given a Plate.
For more details, see Arceus → Form data.
Basculin and Basculegion
Basculin cannot change forms.
- White-Stripe Form is sometimes considered a Hisuian regional form.
Male and female Basculegion are two distinct, non-interchangeable forms.
For more details, see Basculin → Form data and List of Pokémon with gender differences → Basculegion.
Darmanitan
Darmanitan with the Ability Zen Mode can change forms in battle after dropping to below half its max HP in battle.
For more details, see Darmanitan → Form data.
Deerling and Sawsbuck
Deerling and Sawsbuck can change forms in Generation V based on the current season and in Generation IX based on the location the game is loaded in. It is not possible for them to change forms in other games.
For more details, see Deerling → Form data and Sawsbuck → Form data.
Tornadus, Thundurus, Landorus, and Enamorus
Tornadus, Thundurus, Landorus, and Enamorus can change forms by being exposed to the Reveal Glass.
For more details, see Tornadus → Form data, Thundurus → Form data, Landorus → Form data, and Enamorus → Form data.
Kyurem

Kyurem has two unique forms, White Kyurem and Black Kyurem. These forms are a result of the Pokémon fusing with Reshiram and Zekrom respectively. By using the DNA Splicers, and through a process known as Absofusion, the Pokémon to break the frozen ice on its wings and reveal its gray tendril-like appendages before fusing with either Reshiram or Zekrom.
For more details, see Kyurem → Form data.
Keldeo
Keldeo will change forms in Pokémon Black 2 and White 2 onwards if it knows the move Secret Sword.
For more details, see Keldeo → Form data.
Meloetta
Meloetta can change forms in battle by using the move Relic Song.
For more details, see Meloetta → Form data.
Genesect
Genesect can change forms by being given a Drive.
- Changes the type of its signature move, Techno Blast
For more details, see Genesect → Form data.
Greninja
In Generation VII, Greninja with the Ability Battle Bond will transform into Ash-Greninja after it directly causes an opponent to faint without ending the battle. The transformation itself is known as the Bond Phenomenon.
For more details, see Greninja → Form data.
Vivillon
Vivillon cannot change pattern. Vivillon's pattern correlates to the real world location that the 3DS System or post card originates from.
For more details, see Vivillon → Form data.
Flabébé, Floette, and Florges
Flabébé, Floette, and Florges cannot change forms.
Eternal Flower Floette has form data in the 3DS Generation VI and Generation VII titles, but are unobtainable.
For more details, see: Flabébé → Form data, Floette → Form data, and Florges → Form data.
Furfrou
Furfrou can change its trim by being groomed.
For more details, see Furfrou → Form data.
Meowstic
Male and female Meowstic are two distinct, non-interchangeable forms.
For more details, see List of Pokémon with gender differences → Meowstic.
Aegislash
Aegislash can change forms in battle due to its Ability Stance Change.
For more details, see Aegislash → Form data.
Pumpkaboo and Gourgeist
Pumpkaboo and Gourgeist cannot change forms.
For more details, see Pumpkaboo → Form data and Gourgeist → Form data.
Xerneas
Xerneas will change into its Active Mode during battles and Pokémon Contest Spectaculars.
For more details, see Xerneas → Form data.
Zygarde
Zygarde with the Ability Aura Break cannot change forms. However a Zygarde can be broken down and then reassmbled using either the Reassembly Unit or a Zygarde Cube, into another form, either with Aura Break or Power Construct.
- Internally, the 10% and 50% Formes of Zygarde with the Ability Aura Break are each treated as separate forms from the 10% and 50% Formes of Zygarde with the Ability Power Construct.
- A Zygarde of either 10% or 50% Formes can transform into Complete Forme by using its Power Construct Ability.
- In Generation VII, each form is required an amount of Zygarde Cell and Zygarde Cores that correlates with its name.
For more details, see Zygarde → Form data.
Hoopa
Hoopa can change forms by being exposed to the Prison Bottle.
For more details, see Hoopa → Form data.
Oricorio
Oricorio can change forms by sipping Nectar.
For more details, see Oricorio → Form data.
Lycanroc
Lycanroc cannot change forms.
For more details, see Lycanroc → Form data.
Wishiwashi
Wishiwashi can change forms due to its Ability Schooling if it is at least level 20.
For more details, see Wishiwashi → Form data.
Silvally
Silvally can change forms by being given a Memory.
For more details, see Silvally → Form data.
Minior
Minior can change between its forms using its Ability Shields Down.
The core's color cannot be changed. All cores have the same Shiny form.
For more details, see Minior → Form data.
Mimikyu
Mimikyu can change forms due to its Ability Disguise.
For more details, see Mimikyu → Form data.
Necrozma
Necrozma can change forms through use of the N-Solarizer and N-Lunarizer and fuse with either Solgaleo or Lunala. These forms can Ultra Burst during battle to attain the Ultra Necrozma form.
For more details, see Necrozma → Form data.
Magearna
Magearna cannot change forms.
For more details, see Magearna → Form data.
Cramorant
Cramorant has three forms. It is always in its standard form outside of battle, while its other two forms are activated in battle by its Ability Gulp Missile.
For more details, see Cramorant → Form data.
Toxtricity
Toxtricity has two non-interchangeable forms. The two forms share a Gigantamax form.
For more details, see Toxtricity → Form data.
Sinistea and Polteageist
Sinistea and Polteageist cannot change forms.
For more details, see Sinistea → Form data and Polteageist → Form data.
Alcremie
Alcremie's form depends on two different parameters: its cream and type of Sweet. Cream affects the color of Alcremie's body, while the Sweet affects its eye color and head ornaments. There are nine different types of cream and seven different types of Sweet. Any type of cream can be paired with any Sweet, resulting in 63 different non-Gigantamax forms of Alcremie, not including its Shiny coloration.
Alcremie's cream and sweets are non-interchangeable.
All Alcremie forms have access to the same Gigantamax form.
For more details, see Alcremie → Form data.
Eiscue
Eiscue switches between its forms with its Ability Ice Face.
For more details, see Eiscue → Form data.
Indeedee
Male and female Indeedee are two distinct, non-interchangeable forms.
For more details, see List of Pokémon with gender differences → Indeedee.
Morpeko
Morpeko switches between its forms with its Ability Hunger Switch.
For more details, see Morpeko → Form data.
Zacian and Zamazenta
Zacian can change forms upon entering battle while holding a Rusted Sword.
Zamazenta can change forms upon entering battle while holding a Rusted Shield.
For more details, see Zacian → Form data and Zamazenta → Form data.
Eternatus
During the climax of Pokémon Sword and Shield, the player confronts a powered-up version of Eternatus known as Eternamax Eternatus, which is fought in a semi-scripted Max Raid Battle and uses Max Moves like a Dynamaxed Pokémon. This form is unobtainable, but briefly appears in the move animation for Eternabeam.
For more details, see Eternatus → Form data.
Urshifu
Urshifu has two non-interchangeable forms. The two forms also have separate Gigantamax forms.
For more details, see Urshifu → Form data.
Zarude
Zarude cannot change forms.
For more details, see Zarude → Form data.
Calyrex
Calyrex can change forms through the use of the Reins of Unity, which combines it with Glastrier or Spectrier.
For more details, see Calyrex → Form data.
Ursaluna
Ursaluna cannot change forms.
- Ursaluna Bloodmoon is a unique form that has a unique movepool and base stats from those of regular Ursaluna.
For more details, see Ursaluna → Form data.
Oinkologne
Male and female Oinkologne are two distinct, non-interchangeable forms.
For more details, see List of Pokémon with gender differences → Oinkologne.
Maushold
Maushold cannot change forms.
For more details, see Maushold → Form data.
Squawkabilly
Squawkabilly cannot change forms.
- Green and Blue Plumage have different Hidden Abilities from Yellow and White Plumage.
For more details, see Squawkabilly → Form data.
Palafin
Palafin can change forms during battle due to its Ability Zero to Hero.
For more details, see Palafin → Form data.
Tatsugiri
Tatsugiri cannot change forms.
- Has different colors, fin shapes, and patterns on their bodies.
- Stat boost that Dondozo receives from Tatsugiri changes depending on its form.
For more details, see Tatsugiri → Form data.
Dudunsparce
Dudunsparce cannot change forms.
For more details, see Dudunsparce → Form data.
Gimmighoul
Gimmighoul cannot change forms. Both forms evolve into Gholdengo.
For more details, see Gimmighoul → Form data.
Poltchageist and Sinistcha
Poltchageist and Sinistcha cannot change forms.
For more details, see Poltchageist → Form data and Sinistcha → Form data.
Ogerpon
Ogerpon can change forms by being given either the Wellspring Mask, Hearthflame Mask, or Cornerstone Mask. Each form has their own unique Terastallized state that Ogerpon transforms into upon Terastallization.
For more details, see Ogerpon → Form data.
Terapagos
Terapagos can change from its Normal Form to its Terastal Form through its Ability, Tera Shift, and from its Terastal Form to its Stellar Form through Terastallization, granting it the Stellar Tera Type.
For more details, see Terapagos → Form data.
Form-like transformations
Several Pokémon have named transformations that are otherwise not recognized by the Pokédex as distinct forms.
Rotom

Rotom Dex


Rotom Phone

Rotomi

Drone Rotom


Rotom Bike
In addition to the forms of Rotom that are directly obtainable by the player, Rotom has other appearances that it takes when assuming other appliances. These appearances do not have battle capabilities and are not obtainable by the player, instead they usually function as non-player characters or Key Items.
Out of these appearances, only the Rotom Dex has been considered a form, being called as such in the Japanese version of the Pokémon animated series. While the Rotom Bike is considered an extension of the Rotom PhoneSwSh.
For more details, see Rotom → Biology, Rotom Pokédex, Rotom Phone, Rotomi, Drone Rotom, and Rotom Bike.
Reshiram, Zekrom, and Kyurem
Reshiram, Zekrom, White Kyurem, and Black Kyurem enter Overdrive mode when their emotions surge, igniting parts of their bodies with flames or electricity in the process. Reshiram and Zekrom enter Overdrive mode when using their signature moves (Fusion Flare and Blue Flare for Reshiram, Fusion Bolt and Bolt Strike for Zekrom) and are otherwise usually not in Overdrive mode. Black and White Kyurem, however, are always in Overdrive mode in battle.
For more details, see Reshiram → Biology, Zekrom → Biology, and Kyurem → Biology.
Genesect

High-speed flight configuration
By folding up its limbs and connecting its head to the cannon on its back, Genesect assumes a disk-like form known as the "high-speed flight configuration", allowing it to fly at remarkable speeds.
For more details, see Genesect → Biology.
Solgaleo and Lunala
Solgaleo and Lunala enter special phases when using their powers, shining brighter than normal. They both enter this phase while in Ultra Space (although not while in battle) or when using their signature moves. For Solgaleo, these moves are Sunsteel Strike and Searing Sunraze Smash; for Lunala, these are Moongeist Beam and Menacing Moonraze Maelstrom.
For more details, see Solgaleo → Biology and Lunala → Biology.
Marshadow
When Marshadow attacks or becomes worked up, the flames on its body flare green. This transformation is called Zenith Marshadow.[1]
For more details, see Marshadow → Biology.
Lokix
According to its Pokédex entries, Lokix can form a stance known as Showdown Mode, where it uses the third pair of legs on its back.
For more details, see Lokix → Biology.
Revavroom
Revavroom has six forms in total, consisting of its standard form and five Starmobile forms, one for each of the Team Star bosses. These forms are non-interchangeable.
For more details, see Revavroom → Form data and Starmobile.
Cyclizar
According to Jacq, Cyclizar has three forms: a basic form, a battle form, and a ride form.
For more details, see Cyclizar → Biology.
Koraidon and Miraidon
Koraidon and Miraidon can enter one of three different forms when they travel the Paldea region and two forms based on how much power they have. They can change their forms to better suit what they are doing or what terrain they are traveling over.
Uniquely, the Pokédex displays the names for Koraidon and Miraidon's battle forms (Apex Build and Ultimate Mode, respectively), despite none of their other forms being included in the Pokédex.
For more details, see Koraidon → Biology and Miraidon → Biology.
Pokémon with technical forms
Some Pokémon have forms which are only distinguished internally within the game's programming. Most of these forms are not visually distinct from one another, but may still have an impact on gameplay. These forms are not included in the Pokédex (with the exception of Greninja and Rockruff's forms in the mobile version of Pokémon HOME).
Pikachu and Eevee
The partner Pikachu and partner Eevee given to the player in Pokémon: Let's Go, Pikachu! and Let's Go, Eevee! are each considered separate forms internally. They use higher quality models, have higher base stats, and are unable to evolve, along with many other minor differences.
For more details, see Pikachu → Form data and Eevee → Form data.
Mothim
Mothim has three forms internally, each corresponding to the three forms of Burmy it can evolve from.
For more details, see Mothim → Form data.
Greninja
Greninja with the Ability Battle Bond are treated as a separate form to other Greninja, and cannot breed.
For more details, see Greninja → Form data.
Zygarde
The 10% and 50% Formes of Zygarde with the Ability Aura Break are each treated as separate forms from the 10% and 50% Formes of Zygarde with the Ability Power Construct. This explains why the Ability Capsule can't be used to change Zygarde's Ability, only a Zygarde Cube can.
For more details, see Zygarde → Form data.
Scatterbug and Spewpa
Vivillon patterns are each treated as separate forms. Because Vivillon's pattern is determined by the location the Scatterbug is generated in, each of Vivillon's 20 patterns has a corresponding form for both Scatterbug and Spewpa.
For more details, see Scatterbug → Form data and Spewpa → Form data.
Rockruff
Rockruff with the Ability Own Tempo are treated as a separate form to other Rockruff, and will always evolve into Dusk Form Lycanroc.
For more details, see Rockruff → Form data.
Totem Pokémon
Totem Pokémon are a group of Pokémon found in Alola. While visually indistinct from their usual species, their height and weight is often much larger. Eleven of the twelve of these larger-sized variants, known as Totem-like Pokémon, can be obtained by the player. With exception of Wishiwashi, these Pokémon are programmed internally as unique forms. Totem-like Pokémon transferred to Pokémon HOME will be reverted to their usual size.
For more details, see Totem Pokémon → Totem-like Pokémon.
Unidentified properties
Many Pokémon have transformations and changes to them that appear similar to those of a form change or form-like transformation. However, these "forms" often go unnamed, and may just be a result of a Pokémon's normal biological properties.
Xerneas and Yveltal

As a tree

Neutral Mode

As a cocoon

Yveltal
When Xerneas has exhausted too much life energy, it transforms into a tree and enters a deep slumber. Similarly, when Yveltal reaches the end of its lifespan, it steals the life energy of everything around it, then encases itself in a cocoon and falls into a slumber.
For more details, see Xerneas → Biology and Yveltal → Biology.
Tapu Koko, Tapu Lele, Tapu Bulu, and Tapu Fini


Tapu Koko


Tapu Lele


Tapu Bulu


Tapu Fini

The guardian deities have a unique Z-Move that no other species can use. During this Move, the tapu will make use of Alola's own energy in the form of Z-Power, allowing their tiki-like shell to be used as a head of a yellow giant, complete with arms and legs.
For more details, see Tapu Koko → Biology, Tapu Lele → Biology, Tapu Bulu → Biology, and Tapu Fini → Biology.
Nihilego

Nihilego
Nihilego is an Ultra Beast who is capable of physically merging with its host. It usually grasps onto the host's head, draining their energy and making them hostile. Due to unknown circumstances, Aether President Lusamine had been able to undergo a fusion with the UB, causing Nihilego to take on a drastically unique appearance. Lusamine's body had also changed with her body visible within Nihilego's bell and her legs dangling beneath it. This form has no known name, however The Alola Region Artworks directs it under Lusamine's concept art, simply labeling it as ルザミーネ (ウツロイド) Lusamine (Uturoid) or translated as: Lusamine (Nihilego). The internal name is known as MOTHERBEAST, using a combination of Lusamine's internal name MOTHER, and the Ultra Beast internal name, BEAST.
For more details, see Nihilego → Biology.
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In other games
Pokémon Shuffle
- Main article: List of Pokémon by Pokémon Shuffle list number
In Pokémon Shuffle, Pokémon with different forms have different Skills and can have different Attack Powers and max levels.
Most Pokémon with forms in the core series games also have those forms in Pokémon Shuffle. Many Pokémon have a "Winking" form, notably including most of the first partner Pokémon. There are also a few Pokémon with a "Spooky" or "Holiday" form. Pikachu has a large variety of forms, mostly unique to Pokémon Shuffle.
Pokémon GO
- Main article: List of Pokémon with form differences in Pokémon GO
The majority of Pokémon in Pokémon GO have their forms determined at the time of capture and impossible to change, with the exceptions of Shaymin, Kyurem, Furfrou, Hoopa, Zygarde, Necrozma, Morpeko, Zacian, and Zamazenta. Although every species has one Pokédex entry each, a Pokémon is considered different from any of its alternate forms; this means that even if a player has one form of the Pokémon species registered in the Pokédex, an alternate form will still appear as a silhouette in the Nearby screen, and receiving one in a trade will be considered a Special Trade.
Trivia
- As of Generation IX, four Pokémon have form differences that remain unobtainable. These are:
- ???-type Arceus, which only existed in the code for the Generation IV games and is unavailable without hacking.
- Eternal Flower Floette, which only exists in the code for the Generation VI and Generation VII games, remains in the data of Pokémon HOME.
- Eternamax Eternatus, which is only seen in the climax of Pokémon Sword and Shield and when Eternatus uses Eternabeam.
- Revavroom's Starmobile forms, which are only seen being used by the bosses of Team Star.
- Some of the Pokémon with form differences have unique distinctions:
- Darmanitan and Tauros are the only Pokémon whose regional forms have further form differences.
- Hoopa is the only Mythical Pokémon whose form change outright increases base stats, rather than re-distributing them.
- Urshifu is the only Pokémon whose Gigantamax form has form differences.
- Although Toxtricity and Alcremie have multiple alternate forms, they each have only one Gigantamax form.
- Gimmighoul is the only Pokemon with multiple forms that have no bearing on the Pokémon/form of the Pokemon they evolve into.
- As a technicality, male Burmy may also fall under this unique distinction. As regardless of form, male Burmy will always evolve into Mothim. Burmy's form only dictates the outcome of Wormadam, exclusive to the Burmy who are female.
- Koraidon and Miraidon have the highest number of forms that are obtainable in some capacity yet unusable in battle, as they each use three forms solely for travel and are obtained in their fourth "low-power" forms, yet can only battle in their "high-power" forms.
- In Pokémon Emerald, most Pokémon sprite animations have two frames. However, the three Pokémon in the game with form differences (Unown, Castform, and Deoxys) have only one frame for each of their forms, relying solely on rotation and bouncing effects for their animations, possibly due to space limitations. The same applies to Spinda, a Pokémon with differing appearances that are not classified as forms.


























































































































































































































































































































































































































































