List of Pokémon with form differences: Difference between revisions

Starting in {{game|HeartGold and SoulSilver|s}}, every official different form has a name given by the [[Pokédex]], though {{p|Arceus}}, {{p|Genesect}}, and {{p|Furfrou}}'s alternate forms were not recognized separately in the Pokédex until [[Pokémon Omega Ruby and Alpha Sapphire]]. In [[Generation II|Generations II]], [[Generation III|III]], and [[Generation IV|IV]], whichever form is encountered first will be the sprite displayed in the Pokédex by default; for example, if West Sea {{p|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 [[List of Pokémon with gender differences|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 {{game|Black and White|s}}, the forms section is only available after interacting with [[Cedric Juniper]] in [[Mistralton City]], while in {{game|Black and White|s 2|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 sprite shown in the Pokédex.

 

In [[Pokémon X and Y]], [[Mega Evolution]] was introduced, allowing certain Pokémon to achieve a more powerful form in battle. Mega Evolution may only be achieved if the Pokémon's [[Pokémon Trainer|Trainer]] possesses a [[Key Stone]] and the Pokémon [[Held item|holds]] the [[Mega Stone]] corresponding to its species (with the sole exception of {{p|Rayquaza}}), and a Trainer can only Mega Evolve their Pokémon once per battle. In addition to altering the Pokémon's appearance, Mega Evolution changes its [[base stats]], and may also change its [[type]] and [[Ability]]. Mega Evolution has been removed from the core series as of [[Generation VIII]].

 

In [[Pokémon Sword and Shield]], [[Gigantamax]] was introduced. Gigantamax is a special type of [[Dynamax]] that causes the Pokémon's appearance to change beyond simply an increase in size. Only certain species of Pokémon can Gigantamax, and even among Pokémon with Gigantamax forms, only those possessing a trait known as the Gigantamax Factor may Gigantamax. Gigantamaxing has many of the same effects as regular Dynamaxing; however, when a Pokémon Gigantamaxes, its attacking moves of a certain [[type]] are replaced with that Pokémon's exclusive [[G-Max Move]], rather than regular [[Max Move]]s.

These [[Pikachu in a cap|cap-wearing Pikachu]] are {{pkmn2|event}}-exclusive Pokémon that debuted in [[Pokémon Sun and Moon]]. Like [[Ash's Pikachu]], these Pikachu are always [[gender|male]] and cannot [[evolution|evolve]] or {{pkmn|breeding|breed}}. They are also able to use the event-exclusive [[Z-Crystal]] [[Pikashunium Z]] and its corresponding [[Z-Move]] {{m|10,000,000 Volt Thunderbolt}}. Their [[cry]] differs from that of regular Pikachu.

Six variants exist in Sun and Moon, one for each of [[Ash's hat]]s from the anime's [[original series]] to ''[[Pokémon the Series: Sun & Moon]]''. A seventh variant debuted in [[Pokémon Ultra Sun and Ultra Moon]], wearing the Partner Cap, Ash's hat from the [[M20|20th movie]]. An eighth variant debuted in the Version 1.2.0 update of [[Pokémon Sword and Shield]], wearing the World Cap, Ash's hat from ''[[Pokémon Journeys: The Series]]''.

Spiky-eared Pichu is a unique female {{p|Pichu}} who has a tuft of hair on the end of her left ear. She only appears in {{game|HeartGold and SoulSilver|s}}. Spiky-eared Pichu cannot [[Evolution|evolve]], and her [[Pokéathlon]] [[performance]] stats differ from those of a normal Pichu.

In {{game2|Gold|Silver|Crystal}}, there is a special [[Unown Mode]], an upgrade to the Pokédex that was developed by the researchers at the [[Ruins of Alph]] to record the different forms of Unown, which is available after the player has caught several Unown. In {{game|HeartGold and SoulSilver|s}}, there is the [[Unown Report]], which is obtainable after the player completes the first tile puzzle in the [[Ruins of Alph]].

{{p|Castform}} has four different interchangeable forms, which it switches between based on the [[weather]] in battles due to its [[Ability]] {{a|Forecast}}. Each of its forms has a different [[type]] to match the weather. Castform was the first Pokémon to have interchangeable forms.

By default, Castform is {{type|Normal}} and has a plain appearance with a gray body. It is always in this form outside of battle, and it begins battles in this form. It remains in this form in clear weather, in any weather without a specific form, or if the weather has its effects negated by {{a|Cloud Nine}} or {{a|Air Lock}}.

In [[Generation III|Generations III]] and [[Generation IV|IV]], if Forecast is suppressed or replaced, Castform will remain in its current form (regardless of the weather). From [[Generation V]] onward, if Forecast is suppressed or replaced, Castform will revert to its normal form (regardless of the weather).

Prior to [[Generation VIII]], {{pkmn2|Shiny}} Castform only appeared Shiny in its normal form.

In the [[Generation III]] games, Deoxys's forms are game-specific, such that it will always be in one particular form while in the player's possession (although it will always be in Normal Forme in the [[Wild Pokémon|wild]]). Its form can only be changed by [[Trade|trading]] it to a different game.

* In [[Pokémon Sun and Moon|Pokémon Sun, Moon]], [[Pokémon Ultra Sun and Ultra Moon|Ultra Sun, and Ultra Moon]], using the meteorite next to [[Sophocles]] in the [[Hokulani Observatory]] on [[Mount Hokulani]].

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===Burmy and Wormadam{{anchor|Burmy}}{{anchor|Wormadam}}===

Apart from {{pkmn|breeding}} and [[evolution]], Burmy's cloak is purely cosmetic; conversely, different cloaks of Wormadam have different [[type]]s, stats, and learnsets. Bred Burmy will have the same cloak as the mother, will be in the same cloak as a Burmy or Wormadam bred with Ditto, or will be in Plant Cloak if bred from a {{p|Mothim}} and a {{p|Ditto}}.

{{p|Cherrim}} changes form depending on the [[weather]] in battle. During [[harsh sunlight]] (and without {{a|Cloud Nine}} or {{a|Air Lock}} nullifying the weather), it changes into Sunshine Form; otherwise, it is in its Overcast Form. Due to its [[Ability]] {{a|Flower Gift}}, its {{stat|Attack}} and {{stat|Special Defense}} increase in its Sunshine Form. Outside of battle, it is always in Overcast Form.

In [[Generation IV]], Cherrim changes form independently of its Ability. Starting in [[Generation V]], it is Cherrim's Ability that changes its form, except in {{g|Legends: Arceus}}, in which Cherrim's form and stats change without Flower Gift due to the game's lack of Abilities.

===Shellos and Gastrodon{{anchor|Shellos}}{{anchor|Gastrodon}}===

{{p|Shellos}} and {{p|Gastrodon}} each have two different forms: West Sea and East Sea. In most cases, where they are encountered in the [[Wild Pokémon|wild]] determines their form. This is purely a cosmetic difference, and these Pokémon cannot change between forms.

In [[Generation IV]], all forms of Rotom are {{2t|Electric|Ghost}}-type; from Generation V onward, the appliance forms replace the Ghost type with the type of their associated move. All appliance forms have the same base stats, with a higher total than that of Rotom's regular form; the only base stat of normal Rotom that is higher than its appliance forms is its Speed.

*In Pokémon Platinum, [[Pokémon Brilliant Diamond and Shining Pearl|Brilliant Diamond, and Shining Pearl]], the appliances are located in [[Rotom's Room]] in the [[Team Galactic Eterna Building]], which can only be accessed by using the {{si|Secret Key}}.

Using these locations, Rotom can also return the appliance to change back to its normal form (with the exception of Brilliant Diamond and Shining Pearl, in which the Rotom Catalog is used instead, obtained in Rotom's Room after Rotom enters one of the appliances).

 

Upon changing from an appliance form, Rotom will forget the special move associated with that appliance form. Upon changing into an appliance form, it will learn the special move associated with the form. When changing form, if Rotom knows four moves but not the special move of its previous form, the player will be prompted to replace a move with the new exclusive move (Rotom cannot change to an appliance form unless it does). If Rotom's only known move is its special move and it changes to its normal form, then the Rotom will learn {{m|Thunder Shock}}. In [[Generation IV]] and {{gen|V}}, if Rotom forgets the move that is tied to its appliance form, it changes back into its normal form. Starting in Generation VI, Rotom can remain in an appliance form even if it forgets the associated special move.

{{pkmn|Egg|Hatched}} Rotom are always in their normal form.

In [[Generation IV]], Rotom changes back to its normal form when taken into the [[Union Room]] or [[Wi-Fi Club]], or when deposited in the {{pkmn|Day Care}}.

===[[Creation trio]]===

The creation trio have the ability to switch to a second form: Origin Forme. Giratina is unique, as its standard form is called Altered Forme.

The base forms of Dialga and Palkia, and Giratina's Altered Forme, first debuted in [[Pokémon Diamond and Pearl]]. {{p|Giratina}}'s Origin Forme was first introduced in {{game|Platinum}} while {{p|Dialga}} and {{p|Palkia}}'s Origin Formes were introduced in [[Pokémon Legends: Arceus]]. Dialga, Palkia, and Giratina can switch between their two forms by being exposed to the [[Adamant Crystal]], [[Lustrous Globe]], and [[Griseous Orb]]/[[Griseous Core]] respectively. If any of the three is deposited in [[Pokémon HOME]] in Origin Forme, it will revert to its standard form.

The forms differ in their [[base stats]]: Dialga's Origin Forme has decreased {{stat|Attack}} and increased {{stat|Special Defense}}, Palkia's Origin Forme has decreased {{stat|Attack}} and increased {{stat|Speed}}, and Giratina's Origin Forme has its {{stat|Defense}} and {{stat|Special Defense}} switched with its {{stat|Attack}} and {{stat|Special Attack}} (in all cases, the base stat totals are unchanged). In Pokémon Legends: Arceus, all three Legendary Pokémon's signature moves have modified base power and accuracy when used by their Origin Formes as well as unique animations.

Sky Forme Shaymin will change back into and remain in its Land Forme at night or if it is {{status|frozen}}; Shaymin also changes back to Land Forme when deposited in the [[PC]] (prior to [[Generation VII]]), when withdrawn from the PC (Generation VII onwards), when deposited in [[Pokémon Bank]] (but not [[Pokémon HOME]]), or when deposited in the [[Pokémon Day Care]] or [[Pokémon Nursery]].

In games prior to Legends: Arceus, Arceus's [[signature move]] {{m|Judgment}} is Normal-type by default, but changes to match the type of the Plate that its user holds (being unaffected by Z-Crystals). In Legends: Arceus, the type of Judgment is directly determined by Arceus's form, such that its type always matches that of Arceus; additionally, Arceus can change its form during a [[Pokémon battle|battle]] using the [[Legend Plate]]. After being exposed to the Legend Plate, it will be in its Normal-type form by default and change its form before using {{m|Judgment}} to have a type advantage over the target (prioritizing any double weaknesses the target may have); this also changes Judgment's type to match Arceus's. It reverts back to its Normal-type form when the battle ends. If Arceus is deposited into [[Pokémon HOME]] while in any of its alternate forms, it reverts to its Normal-type form; if it is under the effects of the Legend Plate when deposited into Pokémon HOME, these effects wear off.

In the [[Generation IV]] games, there is an unused {{type|???}} {{p|Arceus}}, but it cannot be obtained in the games as there is no ???-type Plate. This form was removed in [[Generation V]] due to the removal of the ??? type.

*In {{pkmn|X and Y|Pokémon X}}, Blue-Striped Basculin can only be encountered using a [[Good Rod]] while Red-Striped Basculin can only be encountered using a [[Super Rod]]. This order is reversed in {{pkmn|X and Y|Pokémon Y}}, with Red-Striped Basculin requiring a Good Rod and Blue-Striped Basculin requiring a Super Rod. {{rt|21|Kalos}} is the exception, where only Red-Striped Basculin can be caught with either rod.

The three forms differ in their [[Ability|Abilities]], with {{a|Reckless}} being exclusive to Red-Striped Basculin, {{a|Rock Head}} being exclusive to Blue-Striped Basculin, and {{a|Rattled}} being exclusive to White-Striped Basculin, though all three forms share {{a|Adaptability}} as a possible Ability and {{a|Mold Breaker}} as a [[Ability#Hidden Abilities|Hidden Ability]]. Additionally, wild Red-Striped Basculin have a 5% chance of holding a [[Deep Sea Tooth]], while wild Blue-Striped Basculin have a 5% chance of holding a [[Deep Sea Scale]]. White-Striped Basculin differ from the other two forms in the [[move]]s they can learn, and are also the only one of the forms that can evolve into {{p|Basculegion}}.

If {{p|Darmanitan}} has {{a|Zen Mode}} as its Ability, it changes from Standard Mode into Zen Mode when its HP drops to or below half in battle. It can only remain in Zen Mode in battle.

The original two forms have different stats, such that Zen Mode Darmanitan swaps the Attack and Special Attack of Standard Mode, and has higher defenses but lower Speed. On the other hand, Galarian Darmanitian, in its Zen Mode, simply has increased Attack and Speed compared to Standard Mode.

===Deerling and Sawsbuck{{anchor|Deerling}}{{anchor|Sawsbuck}}===

{{p|Deerling}} and {{p|Sawsbuck}} have four different forms, each corresponding to a [[Season (mechanic)|season]]. These forms are interchangeable in [[Generation V]] but are not in other games. These forms are purely cosmetic.

In the [[Generation V]] games, Deerling and Sawsbuck will change their form to match the current season if they are in the [[party]] when the player exits a [[cave]] or building, receives an {{pkmn|Egg}} from the [[Pokémon Day Care|Day-Care]] Man, or loads a [[save]]d game. All [[wild Pokémon|wild]], [[Pokémon breeding|bred]], and NPC Trainer-owned Deerling and Sawsbuck will match the current season, with the exception of those owned by NPC Trainers in the [[Battle Subway]] and the [[Pokémon World Tournament]], which are always in Spring Form.

===Forces of Nature{{anchor|Tornadus}}{{anchor|Thundurus}}{{anchor|Landorus}}{{anchor|Enamorus}}===

By default, they are in Incarnate Forme. When exposed to the [[Reveal Glass]], they change into Therian Forme; if exposed to the Reveal Glass again, they revert back to Incarnate Forme. Their Therian Formes were introduced in {{game|Black and White|s 2|Pokémon Black 2 and White 2}}, except for in Enamorus' case where both of its forms were introduced in [[Pokémon Legends: Arceus]].

In the games, Kyurem changes its form through the use of the [[DNA Splicers]], which fuses it with {{p|Reshiram}} or {{p|Zekrom}}. The combination retains Kyurem's [[level]], [[Poké Ball]], [[held item]], [[game of origin]], [[personality value]], {{IV}}s, {{EV}}s, [[nickname]], [[original Trainer|OT]], [[Trainer ID number|Trainer ID number, secret ID number]], met location, and [[Pokérus]]. This fusion can be reversed by using the DNA Splicers again, with Reshiram or Zekrom remaining unaltered from before being fused, including whatever item it may have been holding. The DNA Splicers can only fuse one Kyurem at a time. White Kyurem and Black Kyurem cannot be deposited into [[Pokémon Bank]] or [[Pokémon HOME]], nor can they be [[trade]]d or [[release]]d without having the fusion undone first.

White Kyurem has the [[Ability]] {{a|Turboblaze}} and learns the [[move]]s {{m|Fusion Flare}} and {{m|Ice Burn}} by leveling up, and its [[cry]] is a combination of normal Kyurem and Reshiram's cries.

 

Black Kyurem has the Ability {{a|Teravolt}} and learns the moves {{m|Fusion Bolt}} and {{m|Freeze Shock}} by leveling up, and its cry is a combination of normal Kyurem and Zekrom's cries.

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If Keldeo is taught {{m|Secret Sword}} in Pokémon Black 2 or White 2, or in any game in [[Generation VI]] or later, it will change into Resolute Form. If it forgets Secret Sword, it returns to Ordinary Form. Keldeo taught Secret Sword in {{game|Black and White|s}} remain in Ordinary Form when [[trade]]d or [[transfer]]red to later games, though in [[Pokémon Sword and Shield]], an Ordinary Form Keldeo that knows Secret Sword will change to Resolute Form if it is in the [[party]] at the end of a battle, or upon learning or forgetting any [[move]] other than Secret Sword.

Meloetta starts battles in Aria Forme. If it uses the move {{m|Relic Song}}, it changes between the two forms. It reverts to Aria Forme if withdrawn. Outside of battle, Meloetta is always in Aria Forme.

{{Redirect|Ash-Greninja|the Greninja that belonged to [[Ash Ketchum]]|Ash's Greninja}}

In the games, a {{p|Greninja}} with the Ability {{a|Battle Bond}} will transform into Ash-Greninja after it directly causes an opponent to [[fainting|faint]] without ending the battle. It will remain in this form until either it faints or the battle ends; in the former case, this prevents it from changing back into Ash-Greninja for the remainder of the battle. Ash-Greninja has different [[base stats]] than regular Greninja, with increased {{stat|Attack}}, {{stat|Special Attack}}, and {{stat|Speed}}; additionally, the [[move]] {{m|Water Shuriken}} will be more [[power]]ful and always hit 3 times if used by Ash-Greninja.

{{Incomplete|section|Countries such as Ukraine and Myanmar has a 3DS set country option for their Vivillon forms?; map of the entire world about locations of Vivillon forms that is obtainable.}}

Bred {{p|Scatterbug}} will evolve into {{p|Vivillon}} with the same pattern as that of the breeding player's game, regardless of its parents.

*Archipelago Pattern Vivillon can be found in Puerto Rico, Anguilla, the Dominican Republic, Haiti, north Venezuela, the regions of Atlantic, Guajira and Magdalena regions from Colombia and the Yucatán region of Mexico.

*Icy Snow Pattern Vivillon has been reported in far northern regions of Norway and Russia and all Finland except Åland, as well as Canada's Northwest and Yukon Territories.

*Marine Pattern Vivillon has been reported in all Chile minus the Magallanes region, all Spain except the Catalonia region, Portugal, the territories of Acre, Amapá, Amazonas, Rondônia and Roraima from Brazil and Italy.

*Savanna Pattern Vivillon is known to come from various territories of Argentina, all Brazil, except Acre, Amapá, Amazonas, Rondônia and Roraima territories, south Peru, Paraguay, Uruguay and Bolivia.

There are also two {{pkmn2|event}}-exclusive patterns, the Poké Ball Pattern and the Fancy Pattern. The Poké Ball Pattern resembles a standard {{i|Poké Ball}}, and was first [[List of local event Pokémon distributions (Generation VI)#Paris Poké Ball Pattern Vivillon|distributed]] in Paris, France to promote the temporary {{OBP|Pokémon Center|store}} store. The Fancy Pattern was [[GTS Fancy Pattern Vivillon|distributed]] via the [[Nintendo Network]] from July 8 to 31, 2014 to celebrate the GTS's 100 millionth Pokémon trade.

===Flabébé, Floette, and Florges{{anchor|Flabébé}}{{anchor|Floette}}{{anchor|Florges}}===

In {{g|X and Y}}, Flabébé appear in the wild in {{DL|Tall grass|flowers}}, with the colors of Flabébé's flower available depending on the flower patch (although each flower patch has multiple Flabébé flower colors). In {{g|Ultra Sun and Ultra Moon}}, wild Yellow Flower Flabébé appear in [[Melemele Meadow]], Orange and White Flower Flabébé exclusively appear as its allies called in an [[SOS Battle]].

In [[Generation VI]], since only Blue Flower, Red Flower, and Yellow Flower Floette can appear in the [[Friend Safari]], only these forms of Flabébé, Floette, and Florges can have their {{DL|Ability|Hidden Ability}} {{a|Symbiosis}}. In [[Generation VII]], all forms of the Flabébé evolutionary line can have their Hidden Ability, though the Blue Flower forms cannot be caught with it and must be transferred from a prior game.

The location at which Furfrou can be groomed differs between games.

*In {{g|Sun and Moon}} and {{g|Ultra Sun and Ultra Moon}}, Furfrou can be groomed for {{PDollar}}500 by a {{tc|Punk Girl}} at [[Malie City]]'s salon or a {{tc|Beauty}} at [[Hau'oli City]]'s salon{{sup/7|USUM}}.

In {{g|X and Y}} only, Furfrou's trims are not registered in the [[Pokédex]].

{{p|Aegislash}}, due to its Ability {{a|Stance Change}}, can change forms in battle depending on the move it uses. Initially in Shield Forme, using a damaging move will change it to Blade Forme, while using {{m|King's Shield}} will change it back into Shield Forme. Outside of battle it is always in Shield Forme.

===Pumpkaboo and Gourgeist{{anchor|Pumpkaboo}}{{anchor|Gourgeist}}===

{{p|Pumpkaboo}} and {{p|Gourgeist}} each have four different sizes: Small, Average, Large, or Super. Larger sizes of Pumpkaboo are rarer to encounter in the wild. These forms are non-interchangeable.

Wild Super Size Pumpkaboo will always hold a [[Miracle Seed]], whereas other sizes will never hold an item in the wild. Super Size variants have different, lower-pitched [[Cry|cries]] than the other forms, and are also the only Pokémon to have the XXL size designation in [[Pokémon GO]].

Previously, only Average Size and Super Size Pumpkaboo and Gourgeist could have their [[Hidden Ability]] {{a|Insomnia}}. Average Size can be obtained with its Hidden Ability from the [[Friend Safari]]; Super Size could be obtained with its Hidden Ability from {{pkmn2|event}}s. Since Version 1.2.0 of [[Pokémon Sword and Shield]], all sizes can be obtained with their Hidden Abilities via [[Ability Patch]]es.

{{p|Xerneas}} has two forms: Neutral Mode and Active Mode. There is no gameplay difference between them; Xerneas appears in Active Mode in battles and [[Pokémon Contest|Pokémon Contest Spectacular]]s, and appears in Neutral Mode in other situations, such as in cutscenes, the [[party]] and [[summary]] screens, the [[Pokémon Storage System]], [[Pokémon-Amie]], [[Pokémon Refresh]], [[Pokémon Camp]], and as a [[walking Pokémon]]. According to the Pokédex, Xerneas shares everlasting life while it is in Active Mode.

A Zygarde Cell is a single cell of Zygarde. They can be found scattered throughout the region. They do not have thoughts or will, and can communicate with Zygarde Cores via telepathy. They are incapable of performing [[move]]s.

Zygarde 10% Forme is a Zygarde with 10% of its cells. It has razor-sharp teeth, and can reach speeds up to 60 mph (100 km/h). It can change into Complete Forme with its Ability {{a|Power Construct}}.

Zygarde 50% Forme is a Zygarde with 50% of its cells. It watches over and maintains the local ecosystem. It can change into Complete Forme with its Ability {{a|Power Construct}}.

In battle, a Zygarde with the {{a|Power Construct}} Ability will change into Complete Forme when its HP falls below half in a battle.

While only 100 Cells and Cores are normally available in one save file, the player can obtain more by separating Zygarde with Aura Break from other games. A Zygarde separated into Cells will be lost forever.

In Pokémon Sun and Moon, the player can collect Zygarde Cells and Cores in the overworld throughout the Alola region after obtaining the [[Zygarde Cube]]. There are a total of 5 Cores and 95 Cells throughout the region.

In Pokémon Ultra Sun and Ultra Moon, the player can catch a wild Zygarde 50% Forme in [[Resolution Cave]] on [[Poni Island]]; after the player catches this Zygarde, [[Dexio]] will battle the player on {{rt|16|Alola}}, and upon being defeated he will give the player the Zygarde Cube (containing 40 Zygarde Cells) and Zygarde 10% Forme.

Normally, Hoopa Confined is the Forme taken by Hoopa, which is {{2t|Psychic|Ghost}}. When exposed to a [[Prison Bottle]], Hoopa transforms into Hoopa Unbound, which is {{2t|Psychic|Dark}}. Hoopa Unbound was introduced in {{g|Omega Ruby and Alpha Sapphire}}.

Hoopa Unbound will change back into Hoopa Confined after three days have passed since using the Prison Bottle; Hoopa also changes back to Hoopa Confined when deposited in the [[PC]] (prior to Generation VII), when withdrawn from the PC (Generation VII), or when deposited in the [[Pokémon Day Care]]/[[Pokémon Nursery]].

The two forms have different stats, [[type]]s, learnsets, and [[cry|cries]].

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===Lycanroc{{anchor|Rockruff}}===

{{p|Lycanroc}} has three non-interchangeable forms: Midday Form, Midnight Form, and Dusk Form. In {{pkmn|Sun and Moon|Pokémon Sun}} and {{pkmn|Ultra Sun and Ultra Moon|Pokémon Ultra Sun}}, {{p|Rockruff}} will only evolve into Midday Form Lycanroc, while in {{pkmn|Sun and Moon|Pokémon Moon}} and {{pkmn|Ultra Sun and Ultra Moon|Pokémon Ultra Moon}}, Rockruff will only evolve into Midnight Form Lycanroc (though both Midday Form and Midnight Form can be caught in the wild in all versions). In [[Pokémon Sword and Shield]], Rockruff's evolution now depends on the [[time|time of day]] rather than what game it is in.

Dusk Form debuted in [[Pokémon Ultra Sun and Ultra Moon]]; only special Rockruff with the Ability {{a|Own Tempo}} can evolve into Dusk Form Lycanroc. Own Tempo Rockruff and Dusk Form Lycanroc can breed to produce more Own Tempo Rockruff. After initially being event-exclusive, Own Tempo Rockruff and Dusk Form Lycanroc were later made available through normal means in [[Max Raid Battle]]s in [[The Isle of Armor]] in Pokémon Sword and Shield.

Lycanroc's forms have different stats, {{Abilities}}, learnsets, and [[cry|cries]].

|}{{-}}

{{p|Wishiwashi}} has two interchangeable forms, Solo Form and School Form. It can change between them using its {{a|Schooling}} Ability if it is at least [[level]] 20. Its two forms have different [[base stats]], with School Form having significantly higher {{stat|Attack}}, {{stat|Defense}}, {{stat|Special Attack}}, and {{stat|Special Defense}}, but lower {{stat|Speed}} and identical {{stat|HP}}. The two forms also have different [[Cry|cries]]. Outside of battle, Wishiwashi is always in Solo Form.

Wishiwashi starts battles in its Solo Form. If it is at least level 20 and has above 25% of its maximum {{stat|HP}} remaining when it enters battle, it will change into its School Form. If its remaining HP is at or below 25% of its maximum HP at the end of a turn, it will revert back to Solo Form; however, if it subsequently has above 25% of its maximum HP remaining at the end of a turn, it will change back into School Form. If it is switched out while in School Form, it will revert to Solo Form.

{{p|Silvally}} has multiple different forms that it switches between with its Ability {{a|RKS System}}, with each of its forms having a different [[type]]. In total, it has eighteen different forms, one for each type.

By default, Silvally is in its {{type|Normal}} form. If it [[held item|hold]]s a [[memory]], it changes its form to be the same type as the type the memory corresponds to.

{{p|Minior}} has two forms, Meteor Form and Core Form, and changes between them with its Ability, {{a|Shields Down}}. It is always in Core Form outside of battle. In battle, it starts in Meteor Form, but if its {{stat|HP}} is at or below 50% of its maximum HP at the end of a turn, its shell breaks and it changes into Core Form. It changes back into Meteor Form at the end of a turn if its HP is above 50% of its maximum HP.

* Meteor Form Minior has lower attacking stats and Speed, but higher defenses.

* Core Form Minior has higher attacking stats and Speed, but lower defenses.

Minior's Core Form can be one of seven different colors, each corresponding to one of the colors of a {{wp|rainbow}}. These forms are purely cosmetic and are non-interchangeable. Bred Minior will always have the same color as their parent.

{{p|Mimikyu}} has two interchangeable forms called Disguised Form and Busted Form. It is always in Disguised Form outside of battle.

Mimikyu starts battles in its Disguised Form. When it is hit by a damaging [[move]], its Ability {{a|Disguise}} reduces the damage it takes from it: in [[Generation VII]], it takes no damage from it at all, and in [[Generation VIII]], it only loses 1/8 of its maximum HP. Afterwards, its disguise slumps to the side and it changes into Busted Form. While in Busted Form, it can be damaged normally. Mimikyu will stay in Busted Form until either it [[fainted|faint]]s or the battle ends.

{{p|Necrozma}} has three additional forms: Dusk Mane Necrozma, Dawn Wings Necrozma, and Ultra Necrozma. All three of these forms were introduced in [[Pokémon Ultra Sun and Ultra Moon]].

Dusk Mane Necrozma is the form it attains from absorbing {{p|Solgaleo}}. The player can induce and undo this fusion with the [[N-Solarizer]]. After fusing, Necrozma will attempt to learn {{m|Sunsteel Strike}}, and can use [[Solganium Z]] with it to access Solgaleo's exclusive [[Z-Move]], {{m|Searing Sunraze Smash}}. Its [[cry]] is a combination of normal Necrozma and Solgaleo's cries.

Dawn Wings Necrozma is the form it attains from absorbing {{p|Lunala}}. The player can induce and undo this fusion with the [[N-Lunarizer]]. After fusing, Necrozma will attempt to learn {{m|Moongeist Beam}}, and can use [[Lunalium Z]] with it to access Lunala's exclusive Z-Move, {{m|Menacing Moonraze Maelstrom}}. Its cry is a combination of normal Necrozma and Lunala's cries.

If Necrozma separates from Solgaleo or Lunala while it knows the borrowed move (Sunsteel Strike or Moongeist Beam), that move will be forgotten. If the borrowed move was its only move, Necrozma will learn {{m|Confusion}}.

Due to the mechanics of the N-Solarizer and N-Lunarizer, each player can have a maximum of one Dusk Mane Necrozma and one Dawn Wings Necrozma at a time per game (though having both at the same time requires [[Trade|trading]] or [[transfer]]ring for a second Necrozma). If it is fused with Solgaleo or Lunala, Necrozma cannot be traded, [[release]]d, or moved into [[Pokémon Bank]] or [[Pokémon HOME]].

Ultra Necrozma is a third form Necrozma can attain if it enters a {{pkmn|battle}} in its Dusk Mane or Dawn Wings form while holding its exclusive [[Z-Crystal]], [[Ultranecrozium Z]], at which point the player can use the [[Ultra Burst]] command from the move menu to transform it into Ultra Necrozma. Once transformed, Ultra Necrozma can also use the Ultranecrozium Z on a subsequent turn to upgrade {{m|Photon Geyser}} into its exclusive Z-Move, {{m|Light That Burns the Sky}}. Ultra Necrozma will revert to its previous form when it [[Fainting|faints]] or when the battle ends. Ultra Burst can only be used once per battle, even if the player has multiple Necrozma or revives a fainted Necrozma. Like [[Mega Evolution]], Ultra Necrozma has been removed from the core series as of [[Generation VIII]].

{{p|Magearna}} has an alternate form called Original Color Magearna. The only difference between Magearna's forms is aesthetic: the Original Color form is red and gold. Prior to the launch of [[Pokémon HOME]], the Original Color form was not able to be legitimately obtained, and it only appeared in an official capacity in ''[[M19|Volcanion and the Mechanical Marvel]]''. Since Pokémon HOME's release in February 2020, if a player completes the [[National Pokédex]] (up to {{p|Eternatus}}, including [[Mythical Pokémon]]), they will receive a [[Mystery Gift]] containing an Original Color Magearna.

{{p|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]], {{a|Gulp Missile}}.

Cramorant starts battle in its standard form. If it uses {{m|Surf}} or {{m|Dive}} while it has over 50% of its maximum {{stat|HP}} remaining, it will change into Gulping Form, which has an {{p|Arrokuda}} caught in its beak. If Gulping Form Cramorant is hit with a damaging [[move]], then Cramorant will spit the Arrokuda out at the attacker, which deals damage equal to 25% of their maximum HP, lowers their {{stat|Defense}} by one stage, and reverts Cramorant back to its standard form.

If Cramorant uses {{m|Surf}} or {{m|Dive}} while it is at or below 50% of its maximum HP, it will change into Gorging Form, which has a {{p|Pikachu}} caught in its beak. If Gorging Form Cramorant is hit with a damaging move, then Cramorant will spit the Pikachu out at the attacker, which deals damage equal to 25% of their maximum HP, {{status|Paralyzed|paralyzes}} them, and reverts Cramorant back to its standard form.

===Toxtricity{{anchor|Toxel}}===

{{p|Toxtricity}} has two non-interchangeable forms, Amped Form and Low Key Form. When {{p|Toxel}} [[Evolution|evolves]] into Toxtricity, the form it evolves into depends on its [[Nature]] (unaffected by [[mint]]s):

 

Both forms of Toxtricity have the same [[base stats]], but learn slightly different [[move]]s, and have different possible [[Ability|Abilities]]. Both have access to the same [[Gigantamax]] form.

|}{{-}}

===Sinistea and Polteageist{{anchor|Sinistea}}{{anchor|Polteageist}}===

{{p|Sinistea}} and {{p|Polteageist}} each have two non-interchangeable forms, Phony Form and Antique Form<ref name="guide">[[Pokémon Sword & Pokémon Shield: The Official Galar Region Strategy Guide]]</ref>. The Antique Form is rarer and has a mark of authenticity hidden on its base. The only functional difference between the two forms is the [[Evolution item]] used by Sinistea to [[Evolution|evolve]] into Polteageist: Phony Form Sinistea require a [[Cracked Pot]], while Antique Form Sinistea require a [[Chipped Pot]]. [[Pokémon breeding|Bred]] Sinistea will always be in Phony Form.

Alcremie's form is non-interchangeable and is decided when it evolves from {{p|Milcery}}. Milcery evolves into Alcremie while holding a [[Sweet]] when its Trainer spins and strikes a pose while it is in the [[party]]. The type of Sweet on Alcremie is dependent on which Sweet it was holding, while the cream color varies depending on time of day, the length of the spin, and whether the Trainer was spinning clockwise or counterclockwise.

All Alcremie forms have access to the same Gigantamax form. Normally, the only Gigantamax Alcremie that can be encountered in [[Max Raid Battle]]s have Vanilla Cream and the Strawberry Sweet. However, all types of cream appeared as Gigantamax Alcremie in limited-time [[Wild Area News]], but only with the Strawberry Sweet. Additionally, {{p|Milcery}} with the Gigantamax Factor were also available in limited-time Wild Area News, enabling players to obtain a Gigantamax Alcremie with any Sweet and cream combination. [[Max Soup]] can also be used to give any Alcremie the Gigantamax Factor.

| {{pkmn2|Shiny}}

{{p|Eiscue}} has two interchangeable forms, Ice Face and Noice Face. It switches between them with its Ability {{a|Ice Face}}. It is always in its Ice Face form outside of battle.

{{p|Morpeko}} has two forms that it switches between using its {{a|Hunger Switch}} Ability: Full Belly Mode and Hangry Mode. Its [[signature move]] {{m|Aura Wheel}} is {{type|Electric}} when it is in Full Belly Mode and {{type|Dark}} when it is in Hangry Mode. It starts battles in Full Belly Mode and switches between forms at the end of every turn while it is sent out. It is always in Full Belly Mode outside of battle.

===Zacian and Zamazenta{{anchor|Zacian}}{{anchor|Zamazenta}}===

The [[Legendary Pokémon]] {{p|Zacian}} and {{p|Zamazenta}} have two forms each that change their appearance, stats, [[type]]s, and [[Cry|cries]]. Their default forms are both called Hero of Many Battles; they are both always in this form outside of {{pkmn|battle}}. In battle, Zacian will be in its Crowned Sword form if it is holding a [[Rusted Sword]], while Zamazenta will be in its Crowned Shield form if it is holding a [[Rusted Shield]]. In these forms, they both gain {{t|Steel}} as a secondary type; additionally, Zacian has increased Attack and Speed, while Zamazenta has increased Defense and Special Defense but decreased Speed.

During the climax of {{g|Sword and Shield}}, the player confronts a powered-up version of {{p|Eternatus}} known as Eternamax Eternatus, which is fought in a semi-scripted [[Max Raid Battle]] and uses [[Max Move]]s like a [[Dynamax]]ed Pokémon. This form has the highest base stats of any form of Pokémon to date and is currently unobtainable by the player. However, the form briefly appears in the move animation for {{m|Eternabeam}}.

{{p|Urshifu}} has two non-interchangeable forms. When {{p|Kubfu}} [[Evolution|evolve]]s, the form of Urshifu it evolves into is dependent on which of the [[Towers of Two Fists]] it evolved at. Urshifu's Single Strike Style is {{2t|Fighting|Dark}} and is obtained by evolving Kubfu at the [[Tower of Darkness]], whereas its Rapid Strike Style is {{2t|Fighting|Water}} and is obtained by evolving Kubfu at the [[Tower of Waters]]. Both forms have the same [[base stat]]s, but have different movesets, types, and [[Gigantamax]] forms.

{{p|Calyrex}} has two alternate forms, Ice Rider and Shadow Rider, which were introduced in {{g|Sword and Shield}}'s [[The Crown Tundra|Crown Tundra]] Expansion. The [[Reins of Unity]] can be used to combine with, or separate from, either {{p|Glastrier}} or {{p|Spectrier}} and shift between these forms and its base form. Each form has its own Ability that combines Calyrex's base {{a|Unnerve}} Ability with either {{a|Chilling Neigh}} or {{a|Grim Neigh}}, but in both cases the combined Ability is called {{a|As One}}.

Ice Rider form is the result of combining with Glastrier and is Psychic/Ice-type. After combining, Calyrex will learn {{m|Glacial Lance}}.

Shadow Rider form is the result of combining with Spectrier and is Psychic/Ghost-type. After combining, Calyrex will learn {{m|Astral Barrage}}.

 

Each player can have a maximum of one of Calyrex's Rider forms on a save file at a time and must separate them before Calyrex can be combined with the other Pokémon. As long as Calyrex is combined with Glastrier or Spectrier, it cannot be traded, released, or moved into [[Pokémon HOME]].

Some Pokémon have transformations that may resemble forms and have official names, but they do not register as discrete forms in the Pokédex.

 

{{p|Solgaleo}} and {{p|Lunala}} enter special phases when using their powers, shining brighter than normal. Solgaleo's phase is called the Radiant Sun phase, while Lunala's is the Full Moon phase. 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 {{m|Sunsteel Strike}} and {{m|Searing Sunraze Smash}}; for Lunala, these are {{m|Moongeist Beam}} and {{m|Menacing Moonraze Maelstrom}}.

The majority of Pokémon in {{g|GO}} have their forms determined at the time of capture and impossible to change, with the exceptions of {{p|Furfrou}} and {{p|Hoopa}}. 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.