List of Pokémon with form differences

Some 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 , while other Pokémon have forms that they cannot change between, such as . 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 and Mythical Pokémon, whose alternate forms are usually named using the French word "Forme" instead.
Starting in , every official different form has a name given by the Pokédex, though , , and 's alternate forms were not recognized separately in the Pokédex until . In Generations II, , and , whichever form is encountered first will be the sprite displayed in the Pokédex by default; for example, if West Sea 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 , the forms section is only available after interacting with Cedric Juniper in Mistralton City, while in , 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==
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====Cosplay Pikachu====
Cosplay Pikachu can change forms by changing its costume at a Contest Hall.
* Each costume can learn an exclusive move.
* Exclusive to .
For more details, see .
====Pikachu in a cap====
Pikachu in a cap cannot change forms.
* Able to use the Z-Move .
* Have a different cry than regular Pikachu.
For more details, see .
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Spiky-eared Pichu cannot change forms.
* Pokéathlon performance stats differ from those of regular Pichu.
* Exclusive to .
For more details, see .
=== ===
Paldean Tauros cannot change forms.
* Level-up moves and the type of differs depending on the form.
For more details, see .
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Unown cannot change forms.
* Pokéathlon performance stats of the punctuation forms (! and ?) differ from those of the alphabetical forms.
For more details, see .
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Castform can change forms based on the weather in battles due to its Ability .
For more details, see .
=== and ===
Kyogre can temporarily undergo Primal Reversion if it is holding a Blue Orb in battle.
* Has different base stats, Ability, and cry from regular Kyogre.
Groudon can temporarily undergo Primal Reversion if it is holding a Red Orb in battle.
* Has different base stats, Ability, cry, and type from regular Groudon.
For more details, see and .
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Deoxys can change forms by interacting with certain meteorites.
* Have different base stats and level-up movesets from regular Deoxys.
For more details, see .
=== and ===
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 and .
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Cherrim can change forms depending on the weather in battle.
For more details, see .
=== and ===
Shellos and Gastrodon cannot change forms.
For more details, see and .
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Rotom can change forms based on the appliance it is possessing.
For more details, see .
===, , and ===
Dialga can change forms by being given an Adamant Crystal.
* Has different base stats from regular Dialga.
Palkia can change forms by being given a Lustrous Globe.
* Has different base stats from regular Palkia.
Giratina can change forms by being given a Griseous Core.
* Has different base stats and Ability from Altered Forme Giratina.
For more details, see , , and .
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Shaymin can change forms by being exposed to a Gracidea.
* Has different base stats, Ability, cry, level-up moveset, and type from Land Forme Shaymin.
For more details, see .
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Arceus can change forms by being given a Plate.
For more details, see .
=== and ===
Basculin cannot change forms.
Male and female Basculegion are two distinct, non-interchangeable forms.
For more details, see and .
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Darmanitan with the Ability can change forms in battle after dropping to below half its max in .
For more details, see .
=== and ===
Deerling and Sawsbuck can change forms in Generation V based on the current 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 and .
===, , , and ===
Tornadus, Thundurus, Landorus, and Enamorus can change forms by being exposed to the Reveal Glass. 
For more details, see , , , and .
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Kyurem can change forms through the use of the DNA Splicers, which fuses it with or .
For more details, see .
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Keldeo will change forms in Pokémon Black 2 and White 2 onwards if it knows the move .
For more details, see .
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Meloetta can change forms in battle by using the move .
For more details, see .
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 can change forms by being given a Drive.
* Changes the type of its signature move, 
For more details, see .
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In Generation VII, Greninja with the Ability will transform into Ash-Greninja after it directly causes an opponent to faint without ending the battle. 
For more details, see .
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Vivillon cannot change forms.
For more details, see .
===, , and ===
Flabébé, Floette, and Florges cannot change forms.
Eternal Flower Floette is unobtainable in-game.
For more details, see: , , and .
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Furfrou can change forms by being groomed.
For more details, see .
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Male and female Meowstic are two distinct, non-interchangeable forms.
For more details, see .
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Aegislash can change forms in battle due to its Ability .
For more details, see .
=== and ===
Pumpkaboo and Gourgeist cannot change forms.
For more details, see and .
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Xerneas will change forms during s and Pokémon Contest Spectaculars.
For more details, see .
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Zygarde cannot change forms. Zygarde can be broken down and re-assembled into a different form by using the Zygarde Cube.
* Internally, the 10% and 50% Formes of Zygarde with the Ability are each treated as separate forms from the 10% and 50% Formes of Zygarde with the Ability .
For more details, see .
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Hoopa can change forms by being exposed to the Prison Bottle.
For more details, see .
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Oricorio can change forms by sipping Nectar.
For more details, see .
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Lycanroc cannot change forms.
For more details, see .
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Wishiwashi can change forms due to its Ability if it is at least level 20.
For more details, see .
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Silvally can change forms by being given a Memory.
For more details, see .
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Minior can change between its forms using its Ability .
Its Core Form color cannot be changed. All Core Forms have the same form.
For more details, see .
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Mimikyu can change forms due to its Ability .
For more details, see .
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Necrozma can change forms through use of the N-Solarizer and N-Lunarizer and fuse with either or . These forms can Ultra Burst during to attain the Ultra Necrozma form.
For more details, see .
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Magearna cannot change forms.
For more details, see .
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Cramorant has three forms. It is always in its standard form outside of , while its other two forms are activated in battle by its Ability, .
For more details, see .
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Toxtricity has two non-interchangeable forms. The two forms share a Gigantamax form.
For more details, see .
=== and ===
Sinistea and Polteageist cannot change forms.
For more details, see and .
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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 coloration.
All Alcremie forms have access to the same Gigantamax form.
For more details, see .
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Eiscue switches between its forms with its Ability .
For more details, see .
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Male and female Indeedee are two distinct, non-interchangeable forms.
For more details, see .
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Morpeko switches between its forms with its Ability .
For more details, see .
=== and ===
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 and .
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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 .
For more details, see .
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Urshifu has two non-interchangeable forms. The two forms also have separate Gigantamax forms.
For more details, see .
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Zarude cannot change forms.
For more details, see .
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Calyrex can change forms through the use of the Reins of Unity, which combines it with or .
For more details, see .
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Ursaluna cannot change forms.
For more details, see .
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Male and female Oinkologne are two distinct, non-interchangeable forms.
For more details, see .
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Maushold cannot change forms.
For more details, see .
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Squawkabilly cannot change forms.
* Green and Blue Plumage have different Hidden Abilities from Yellow and White Plumage.
For more details, see .
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Palafin can change forms during battle due to its Ability .
For more details, see .
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Tatsugiri cannot change forms.
* Has different colors, fin shapes, and patterns on their bodies. 
* Stat boost that receives from Tatsugiri changes depending on its form.
For more details, see .
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Dudunsparce cannot change forms.
For more details, see .
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Gimmighoul cannot change forms. Both forms evolve into .
For more details, see .
=== and ===
Poltchageist and Sinistcha cannot change forms. 
For more details, see and .
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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 stallization. 
For more details, see .
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Terapagos can change from its Normal Form to its Terastal Form through its Ability, , and from its Terastal Form to its Stellar Form through stallization, granting it the Tera Type.
For more details, see .
==Form-like transformations==
Several Pokémon have named transformations that are otherwise not recognized by the Pokédex as distinct forms.
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Rotom Pokédex
Rotom Phone
Rotomi
Drone Rotom
Rotom Bike
In addition to the of Rotom that are directly obtainable by the player, there are more forms that it assumes when possessing other appliances. These forms do not have battle capabilities and are not obtainable by the player, instead functioning as non-player characters.
For more details, see , Rotom Pokédex, Rotom Phone, Rotomi, Drone Rotom, and Rotom Bike.
===Reshiram, Zekrom, and ===
Reshiram, Zekrom, White Kyurem, and Black Kyurem enter Overdrive mode when their emotions surge, lighting parts of their bodies in flames or electricity in the process. Reshiram and Zekrom enter Overdrive mode when using their signature moves ( and for Reshiram, and for Zekrom) and are usually not in Overdrive mode otherwise. Black and White Kyurem, however, are always in Overdrive mode in battle.
For more details, see , , and .
=== and ===
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 and ; for Lunala, these are and . Both appear to be permanently in these phases while taken over by in its Dusk Mane and Dawn Wings forms.
For more details, see and .
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When Marshadow attacks or becomes worked up, the flames on its body flare green. This transformation is called Zenith Marshadow.Marshadow Pokémon Pins (2-Pack) | Pokemon Center
For more details, see .
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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 and Starmobile.
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According to Jacq, Cyclizar has three forms: a basic form, a battle form, and a ride form.
For more details, see .
=== and ===
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 and .
==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 and 's forms in the mobile version of Pokémon HOME).
=== and ===
The Pikachu and partner Eevee given to the player in 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 and .
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Mothim has three forms internally, each corresponding to the three forms of Burmy it can evolve from. 
For more details, see .
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Greninja with the Ability are treated as a separate form to other Greninja, and cannot breed.
For more details, see .
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The 10% and 50% Formes of Zygarde with the Ability are each treated as separate forms from the 10% and 50% Formes of Zygarde with the Ability . This explains why the Ability Capsule can't be used to change Zygarde's Ability, only the Zygarde Cube can.
For more details, see .
=== and ===
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 and .
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Rockruff with the Ability are treated as a separate form to other Rockruff, and will always evolve into Dusk Form Lycanroc.
For more details, see .
==In other games==
===Pokémon Shuffle===
In Pokémon Shuffle, Pokémon with different forms have different s 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===
The majority of Pokémon in Pokémon GO have their forms determined at the time of capture and impossible to change, with the exceptions of , , , and . 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:
** , which only existed in the code for the Generation IV games and is unavailable without hacking.
** Eternal Flower , which only exists in the code for the Generation VI and Generation VII games, and remains in the data of Pokémon HOME.
** Eternamax , which is only seen in the climax of and when Eternatus uses .
** '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:
** and are the only Pokémon whose regional forms have further form differences.
** is the only Mythical Pokémon whose form change outright increases base stats, rather than re-distributing them.
** is the only Pokémon whose Gigantamax form has form differences.
*** Although and have multiple alternate forms, they each have only one Gigantamax form.
** and 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.
*** has five forms that are unusable in battle (Pokédex, Phone, Bike, Rotomi, Drone), but Rotomi and Drone Rotom are completely unobtainable.
==References==
==Related articles==
Category:Game mechanics
Category:Pokémon world
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Category:Variant Pokémon
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