Evolution

For information on the direct opposite process, see Devolution.

Evolution (Japanese: 進化(しんか), Hepburn: Shinka) is a signature mechanic of the Pokémon franchise introduced in Generation I.

Description[]

Evolution is when a Pokémon transforms into the next species of Pokémon within its evolutionary line, therefore changing its physical appearance, and typically making it more powerful. Because of this, evolution is much more similar to metamorphosis than Darwinism, despite being the namesake of the latter. More methods of evolving have been introduced throughout each of the generations.

An evolution is normally always irreversible, meaning that a Pokémon cannot change back after evolving. Apart from Mega Evolution, in which the Pokémon transforms back into its previous form at the end of a battle, devolution occurs only in a few games and in Pokémon Adventures.

Nearly all Legendary Pokémon and Mythical Pokémon cannot evolve except for Cosmog and Meltan, respectively. There are still some ordinary Pokémon such as Chatot that cannot evolve either. Poipole is the only Ultra Beast that can evolve (making it and its evolution Naganadel Ultra Beasts more like pseudo-Legendary Pokémon).

The nature of a Pokémon does not change when it evolves, nor does its individual values, which define the values ​​of its statistics, or effort values. Contrarily, some Pokémon have a change in personality after evolving; however, this does not have bearing on gameplay and is more notable in the anime, such as when Ash's Charmander became more aggressive and competitive upon becoming a Charizard. For Magikarp in general, their temperament changes drastically when they evolve into Gyarados, a very aggressive species of Pokémon.

Evolution has different meanings to different Pokémon. In Pokémon the Series, evolution is not tied to ageing process of a Pokémon. For some Pokémon, namely Baby Pokémon, it is a substantial part of growing up. Whereas for other Pokémon, like the Pawniard evolutionary line, evolution is about gaining more power and status despite not being a mandatory requirement for each of its specimens.

Certain Pokémon can express their dislike for evolving (notably, in the anime Ash's Pikachu), or having undergone process like the trainer equipping an Everstone to permanently stunt this phenomenon from happening. Conversely, as seen in the anime, some Pokémon are willing to evolve if it means protecting their Pokémon Trainers or fellow Pokémon, or achieving self-improvements.

Evolutionary lines[]

The most common and basic type of evolutionary line is linear: It begins with the base Pokémon and is followed by one to a maximum of two evolved forms. A linear evolutionary line does not have more than three species of Pokémon in it. A majority of first partner Pokémon fall under this classification of evolutionary line.

There are branched evolutionary lines, in which the Pokémon can evolve directly into one of at least two species of Pokémon within its evolutionary line. The most notable example is Eevee, which can evolve into one of its eight "Eeveelutions" depending on the condition met. Tyrogue and Applin also have their own branched evolutionary line each.

Some evolutionary lines are a mixture of both the linear and branched types of evolutionary lines, with the first evolved form being linear and the second branching out into the Pokémon evolving into one of two species of Pokémon. Oddish, Poliwag, and Ralts are the first Pokémon of such evolutionary lines.

Nincada has a unique evolutionary line, since it can evolves not only into one Pokémon, Ninjask, but also an additional Pokémon at the same time, Shedinja, if the player has a spare Poké Ball and an empty slot in their party.

Requirements[]

Leveling[]

Most Pokémon have to reach a certain level before they can evolve. Even if the Pokémon is at a higher level than the level required to level up, the Pokémon can still evolve by leveling up. However, if the Pokémon is at level 100 and has still not evolved, it cannot evolve because it has reached the highest possible level.

Larvesta evolves at the highest level compared to other basic Pokémon, level 59. Likewise, Zweilous evolves at a higher level than other evolved Pokémon, level 64.

Several species of Pokémon that have a different requirement for evolving have it in addition to reaching a certain level.

It is possible for wild Pokémon to be at a higher level than the one required for them to level up.

Friendship[]

Certain Pokémon need to achieve a certain degree of friendship with their Pokémon Trainer before they can evolve, and then level up after achieving the necessary amount of friendship. A few of Eevee's evolved forms have another requirement before they can evolve, with Eevee evolving into Espeon only during the day or into Umbreon instead at night.

In Generation VI, Eevee could become Sylveon if it has at least two hearts of affection, being the only Pokémon to evolve through this method, and knowing a Fairy-type move. Since Pokémon Sword and Pokémon Shield, the affection requirement has been replaced by high friendship instead, consistent with Espeon and Umbreon.

Items and trading[]

Some Pokémon will not evolve unless a certain item is used, usually an Evolutionary Stone linked to the Pokémon's type. In some cases, a Pokémon has to hold a certain item and then level up before it can evolve. Some other species of Pokémon have to be traded to a friend while holding an item before it can evolve, such as Feebas holding a Prism Scale from Generation V onward. Once the Pokémon has evolved, its held item is used up and lost.

Gender[]

A few species of Pokémon can only evolve if their gender is either male or female. In the case of Burmy, its evolutionary line is branched, so upon reaching level 20, it evolves into Mothim if it is a male or Wormadam if it is a female. Only female Combee can evolve, as well as female Salandit. The males of these species cannot evolve, as these species do not have a branched gender-based evolution.

Moves[]

Since Generation IV, certain Pokémon can evolve by learning a certain move, including Pokémon from earlier generations that cannot use the moves in earlier generations, introducing unique evolutions to them. Since Generation VIII, some evolutions are achievable by knowing a certain move and using it a number of times.

Time[]

With the introduction of the time mechanic in Pokémon Gold Version and Pokémon Silver Version, certain Pokémon can evolve only during a certain time of day, atop an existing requirement such as leveling up or friendship. Uniquely, Ursaring evolves into Ursaluna if it is exposed to a Peat Block, not only during night but also during a full moon.

Rockruff evolves at level 25 into a certain form of Lycanroc: the Midday Form when leveled during the day, the Midnight Form when leveled at night, or the Dusk Form at evening if its Ability is Own Tempo.

HP[]

In Generation VIII, there are two Pokémon that evolve through the unusal method of losing a certain amount of HP in battle. Galarian Yamask can become Runerigus if it loses 49 HP and the player goes under the rock arch at Dusty Bowl. Meanwhile, the White-Striped Basculin can evolve into Basculegion if it loses at least 294 HP of recoil damage. Each Pokémon must not faint as a result of losing their HP.

Locations[]

Certain Pokémon evolve by leveling up at a certain location. In some cases, a Pokémon can level up near a certain object, like Magneton near a special magnetic field; Leafeon near a Moss Rock; or Glaceon near an Ice Rock. However, with the removal of such objects in Pokémon Sword and Pokémon Shield, some of the Pokémon evolve through the use of a certain Evolutionary Stone instead, but in Pokémon Brilliant Diamond and Pokémon Shining Pearl and Pokémon Legends: Arceus, the player can use either method for the Pokémon.

Besides the aforementioned method with Galarian Yamask, another evolution that involves a specific location is Kubfu evolving into Urshifu in its Single Strike Style or Rapid Strike Style upon reading the Scroll of Darkness or the Scroll of Waters on the top floor of the Tower of Darkness and the Tower of Waters, respectively.

Certain Pokémon[]

Certain Pokémon evolve when there is another Pokémon present in the player's party, including Mantyke to Mantine if it levels up with a Remoraid in the party, or Pancham to Pangoro if it reaches level 32 with a Dark-type Pokémon in the player's party.

Uniquely, trading a Shelmet for a Karrablast and vice versa evolves them into Escavalier and Accelgor, respectively.

Steps[]

In Pokémon Scarlet and Pokémon Violet, there are certain Pokémon that can evolve after the player has taken a certain number of steps with them in Let's Go! without stopping. In particular, Pawmo can become Pawmot; Bramblin to Brambleghast; and Rellor to Rabsca if the player takes 1,000 consecutive steps.

Version exclusive[]

There are two species of Pokémon that can evolve only in certain games upon reaching a certain level.

At level 25, Rockruff evolves into Lycanroc in its Midday Form if it is daytime in Pokémon Sun or Pokémon Ultra Sun, and into its Midnight Form if it is nighttime in Pokémon Moon or Pokémon Ultra Moon. The restriction to certain game versions no longer applies from Pokémon Sword and Pokémon Shield onward.

At level 53, Cosmoem evolves into Solgaleo in Pokémon Sun, Pokémon Ultra Sun, and Pokémon Sword, or into Lunala in Pokémon Moon, Pokémon Ultra Moon, and Pokémon Shield.

Miscellaneous[]

Some Pokémon have unique ways of evolving. One example is that Wurmple evolves into Silcoon or Cascoon at level 7, depending on its personality value, which is calculated by when it is found in the wild or when it hatches from an egg.

Feebas used to be able to evolve into Milotic upon having its Beauty maxed out, in Generations III and IV only.

Inkay can evolve into Malamar is by reaching level 30 while holding the console upside-down, utilizing the console's built-in gyroscope.

Sliggoo is the only Pokémon which can evolve depending on the current weather. Starting at level 50, it can evolve into Goodra in areas that are rainy or covered in fog, so a move or an Ability that causes either weather effect is not counted.

Some Pokémon evolve through performing certain actions in battle. Galarian Farfetch'd can evolve into Sirfetch'd after landing three critical hits in a battle. Since Pokémon Scarlet and Pokémon Violet, Primeape can evolve into Annihilape after using Rage Fist twenty times.

Uniquely, when a Toxel reaches level 30, it can evolve into either the Amped Form or Low Key Form of Toxtricity depending on its nature.

Variations[]

Regional forms[]

With the introduction of regional forms in Generation VII, certain species of Pokémon can evolve into a form other than their normal form exclusively within the region where the games take place. As an example, Exeggcute evolves into Alolan Exeggutor through exposure to a Leaf Stone in Alola only, but it becomes regular Exeggutor through the same method in other regions.

Mega Evolution[]

Certain Pokémon can Mega Evolve with the use of a Mega Stone if its Trainer has a Key Stone. However, the Pokémon reverts to normal after the battle ends or if it faints.

Triggers[]

Once the requirements or conditions for evolution has been met, the process of evolving can be triggered in a variety of ways. If the conditions for triggering an evolution are met in the middle of a Pokémon battle, it does not occur until the battle ends, unless the Pokémon has fainted in the process. Contrarily, in Pokémon the Series, a Pokémon can evolve in battle, sometimes causing an unexpected twist to it.

Leveling up[]

For Pokémon that evolve at a certain level, the sequence begins after the battle concludes. In the case that a Rare Candy or Exp. Candy has been used on the Pokémon, the sequence begins after the player closes the dialog box stating that the Pokémon has leveled up. If the player has canceled the evolution, the opportunity is repeated with each new level.

Once a Pokémon has reached level 100, it cannot evolve, since it has reached the maximum level. Since Pokémon Sword and Pokémon Shield, a workaround has been made to this in that giving a Rare Candy to a Pokémon at level 100 can evolve it.

Evolution items[]

Pokémon that evolve directly from an evolution item start the process of evolving when they are exposed to the item, regardless of their level. Evolutionary Stones are the most common type of evolution item, but there are still other types of such items. For instance, the Tart Apple and the Sweet Apple evolve Applin to Flapple or Appletun, respectively.

Trading[]

Pokémon that evolve when traded begin the process after the trade sequence is complete. This has occurred in as early as Generation I, where trading Kadabra, a Graveler, and a Haunter evolves it into a Alakazam, a Golem, and a Gengar, respectively.

Through the GTS, prior to its shutdown, the player could make a Pokémon evolve by depositing the Pokémon and then withdrawing it, therefore skipping the requirement to evolve it.

Battle[]

Like Pokémon that evolve by leveling up, a Pokémon that evolves by performing certain actions in battle starts to evolve when the battle has concluded. For example, Tandemaus can only evolve into Maushold after leveling up during a battle.

Player[]

Not counting the exposure of evolution items to a Pokémon, more methods that involve the player directly were introduced in Pokémon Sword and Pokémon Shield. For Milcery, the player can evolve it by having it hold a certain sweet and then spinning around, causing it to evolve into Alcremie, the form of which depends on how long the player spins, which direction they spin, the time of day, and the type of sweet used.

A few require the player to be at a certain location. With Galarian Yamask, after it loses its 49 HP, it begins to evolve only when the player goes under the rock arch at Dusty Bowl. Kubfu begins to evolve into Urshifu at either of the Towers of Two Fists, in addition to the player reading the scroll in the tower.

Effects[]

Types[]

For certain species of Pokémon, their type changes when they evolve, such as with Torchic, a Fire type, which gains an added Fighting type upon evolving into Combusken. In some cases, one of the Pokémon's types changes, such as Onix going from Rock/Ground type to Steelix, a Steel/Ground type. While Eevee is a Normal type, all of its evolved forms are a different type.

Statistics[]

A Pokémon's statistics usually increase after it evolves. However, for some species of Pokémon, a few of their stats decrease, which is largely based on their physical appearance; for example, Scyther's Speed is decreased by 40 when it evolves into Scizor, but the points are redistributed into adding 20 Attack and Defense respectively. This increase is independent of the Pokémon's level at the time of evolution, so whether it has evolved to a higher or lower level will not affect the Pokémon's final stats.

Moves[]

After a Pokémon has evolved, its usable moves also change. In the case of Salamence, it can learn Fly because it has wings, unlike its previous forms, Bagon and Sheldon. In other cases, once a Pokémon has evolved, it cannot learn any more moves while leveling up, which is the case for Raichu or Wigglytuff; a notable consequence of this occurred in the anime with Lt. Surge's Raichu, since it evolved from a Pikachu very early, making it unable to learn several moves that would have helped it in battle.

Learning moves can be a factor when determining the optimal level to evolve a Pokémon. If there is a move that the current Pokémon can learn by leveling up but not its evolution, it is advisable to cancel the evolution and have it learn the move first. However, in Generations III to VIII, the Pokémon can alternatively learn such moves from the Move Reminder; furthermore, since several evolved forms of Pokémon have moves that they learn at level 1, they only learn such moves from the Move Reminder.

Some Pokémon receive a different Ability after evolving, such as with Poochyena, whose Run Away becomes Intimidate when it evolves into Mightyena.

Canceling[]

In the core series, players can stop a Pokémon from evolving by pressing the B button while it attempts to evolve. However, they cannot cancel the evolution of a Pokémon that is undergoing evolution from an Evolutionary Stone or by trading.

An advantage of preventing a Pokémon from evolving at its proper time is that it learns some moves sooner. As an example, Luxio evolves into Luxray at level 30, but it can learn Crunch at level 38, whereas Luxray learns it at level 42. It is also possible that if the Pokémon does not evolve, it cannot learn a specific move from its evolution.

In the first two remake pairs, Pokémon FireRed Version and Pokémon LeafGreen Version and Pokémon HeartGold Version and Pokémon SoulSilver Version, if the player has not yet obtained the National Pokédex but meets the conditions to evolve a certain Pokémon into one of a later generation, the evolution process does start but ends abruptly.

In Pokémon the Series, it is unclear whether Pokémon Trainers can stop their Pokémon from evolving. However, in "Stopped in the Name of Love!", Dawn saw that her Piplup to cancel its evolution using Bide, so she gave an Everstone to her Piplup so that it would never evolve.

In Pokémon Adventures, the manga, a Pokémon Trainer can stop Pokémon from evolving by pressing the main button on the Pokédex, emitting a low-frequency signal that stops any evolution within a two-kilometer radius. Yellow made constant use of the feature until she decided to have all of her Pokémon evolve at the same time while fighting the Elite Four.

Appearances[]

Core series[]

In Pokémon Gold Version and Pokémon Silver Version, Pokémon Crystal Version, and the remakes Pokémon HeartGold Version and Pokémon SoulSilver Version, Professor Elm is stated to be an expert on evolution. Elm was apparently the character who discovered that Pikachu evolves from Pichu.

In Generations III through V, since Azurill has a different gender ratio than its evolved form, Marill, there is a bug in which there is a third of a chance that a female Azurill changes to male upon becoming Marill, a bug that would not be fixed until Pokémon X and Pokémon Y.

In Pokémon Sun and Pokémon Moon and Pokémon Ultra Sun and Pokémon Ultra Moon, when a Pokémon evolves into its regional form, the background is colored green and different music plays.

In Pokémon Scarlet and Pokémon Violet, when a Pokémon levels up through the Let's Go! feature, it does not evolve instantly because the player has to still level it up again through some other means.

[]

Since Pokémon Legends: Arceus is a drastic departure from the usual formula of the core series, several evolutions are handled differently. When a Pokémon has met a requirement for evolving, an icon appears, indicating that the process can be activated from the menu.

Uniquely, certain Pokémon can evolve after using a move a certain number of times in either strong style or agile style, Hisuian Qwilfish evolves into Overqwil after using Barb Barrage at least twenty times in the strong style. Stantler evolves into Wyrdeer by using Psyshield Bash at least twenty times in the agile style.

Pokémon that evolve in other games through being traded have to be evolved with a Linking Cord instead. Since Pokémon cannot hold an item, they evolve when exposed it instead.

Spinoffs[]

Pokémon Pinball series[]

Evolution occurs in Evo Mode in Pokémon Pinball and Pokémon Pinball Ruby & Sapphire. When a Pokémon starts to evolve, the player has two minutes to collect three evolution items, represented by either experience points, Evolutionary Stones, or Game Link Cables, corresponding to the method that evolves the Pokémon in the core series. If the player does not collect every item on time, the evolution fails.

Pokémon Mystery Dungeon series[]

Evolutions are possible in the Pokémon Mystery Dungeon series, but they can occur only in specific locations that not present in the core series.

In Pokémon Mystery Dungeon: Red Rescue Team and Pokémon Mystery Dungeon: Blue Rescue Team, evolutions take place in the Luminous Cave, which can be found after defeating Rayquaza on the Sky Tower. Only one Pokémon can enter the Luminous Cave, and depending on the species, the Pokémon can evolve upon meeting a certain condition, such as after reaching a certain level, having a certain item with it, or having a certain number of IQ. Evolutions through trading are replaced by the Link Cable, and those through Friendship are replaced by IQ, which can be increased with Gummies. Feebas's evolution to Milotic, which involves Beauty in the Generation III core games at the time, is done by a Beauty Scarf instead. Eevee's evolution to either Espeon or Umbreon, normally associated with the time of day, is done by the Sun Ribbon or Lunar Ribbon instead, respectively.

In Pokémon Mystery Dungeon: Explorers of Time and Pokémon Mystery Dungeon: Explorers of Darkness and Pokémon Mystery Dungeon: Explorers of Sky, evolving occurs in the Luminous Spring, which is hidden at the end of the Mystifying Forest. The procedure for evolving a Pokémon is similar as before except the player does not have to choose the Pokémon that they want to evolve as the team leader, but can conveniently choose between all Pokémon available for evolution from the Chimecho Assembly. However, the Pokémon player character and their partner can only evolve after the end of the story, when Manaphy is in the team and has shown them the Marine Resort.

Throughout the storyline of Pokémon Super Mystery Dungeon, the player character and their partner directly evolve to and devolve from their final forms three times, thanks to their Harmony Scarves. The player can evolve Pokémon in the Tree of Life after beating the game, by talking to Xerneas. Although the only requirement of evolving is to achieve a certain level, some connected Pokémon are unevolvable.

Pokémon Conquest[]

Pokémon can also evolve in Pokémon Conquest, and for most species, this is typically achieved upon reaching certain link percentage with their Warrior or Warlord. However, certain Pokémon have to evolve through one of four other methods, depending on their species.

To evolve certain species of Pokémon using an evolution item, the player has to equip the necessary item to their warrior and apply it to the appropriate Pokémon in the next battle. After the battle has concluded, the Pokémon begins to the process of evolving.

When certain Pokémon reach a high enough statistic, they evolve. Many Pokémon that evolve from this method in Pokémon Conquest normally evolve through leveling up in the core series.

Four of Eevee's evolved forms uniquely evolve when the player has achieved a certain link percentage in a specific location. At Illusio, this changes Eevee into Espeon; in Yaksha, this changes Eevee to Umbreon; in Greenleaf, this changes Eevee to Leafeon; and in Nixtorm, this changes Eevee to Glaceon.

A few Pokémon evolve under the condition of defeating one of Ransei's seventeen Warlords in a battle, particularly five in total: Machoke, Kadabra, Haunter, Boldore, and Gurdurr.

In addition to Pokémon evolving, many of the Warlords have the ability to evolve, and those who cannot are typically colored gold in the menus. A Warlord can evolve by achieving a very high Link level with the Pokémon that is classified as its Best Link Pokémon. When a Warlord evolves, both its appearance and stats are changed. When the warrior evolves, its Pokémon can move quicker, it can raise more Pokémon, and its Best Link Pokémon can be changed.

Pokémon GO[]

To evolve a Pokémon in Pokémon GO, the player must give it a certain number of Candies; depending on the Pokémon and its development stage, 12, 25, 50, 100, 200 or, more rarely, 400 candies are needed for it to evolve. Redeemed Shadow Pokémon require ten percent less candy to evolve. Even after the Pokémon has evolved, the player receives a Candy back.

Some evolutions have completely different requirements. Feebas it has to spend some time walking around with the trainer as their Buddy Pokémon. Eevee can become one of its Eeveelutions through various methods, such as feeding it 25 Eevee Candies to evolve into either Vaporeon, Flareon, or Jolteon. It is possible to influence the evolution that Eevee becomes depending on its nickname.^[1]

Anime[]

In Pokémon the Series, evolution works differently than in the core series. A Pokémon can often evolve at a critical moment in a battle in which it appears to be losing, resulting in the episode's climax. Many evolutions are the reward for hard training or a deep bond between the Pokémon and its trainer. When a Pokémon evolves, this often results in newfound self-confidence for both the trainer and their Pokémon. The decision for a Pokémon to evolve is decided not only by the trainer, but also their Pokémon, with some such as Team Rocket's Meowth or Ash's Pikachu not wanting to evolve into Persian and Raichu, respectively.

During evolution, a Pokémon will become surrounded by a light and slowly change shape. From Pokémon the Series: The Beginning to Pokémon the Series: Diamond and Pearl, the Pokémon glows white while changing its form, and when the glow goes out, the Pokémon had evolved. Since Pokémon the Series: Black & White, the Pokémon is surrounded by a golden or blue light. The Pokémon is also surrounded by some type of aura, and a red glow can be seen in the Pokémon's eyes. Overall, later seasons more visibly show the process of a Pokémon evolving.

In some occasions, when a Pokémon (such as Ash's Charmander, Serena's Eevee, and Goh's Sobble, or a wild Gossifleur from "It's… Champion Time!") is about to evolve, its outline shines or its body becomes slightly brighter in a blue color.

The evolution families and methods are largely retained, except for those that involve trading. Pokémon that normally evolve when traded with a held item instead evolve similarly to when applying an evolution item to a Pokémon, such as Misty's Poliwhirl evolving into Politoed just from exposure to a King's Rock. Some of the methods are entirely different, such as Slowpoke evolving into Slowbro when a Shellder bites its tail.

Pokémon the Series: The Beginning[]

An evolution is first seen in "Ash Catches a Pokémon", in which Ash's Caterpie evolves into a Metapod, and in the following episode, "Challenge of the Samurai", Metapod evolves into a Butterfree uniquely by breaking out of its Metapod chrysalis. In the same episode, it is shown how some Kakunas evolve into Beedrills as a form of defense.

In the anime evolving by leveling up is not mentioned. However, an exception in "The School of Hard Knocks", it is stated that Pidgey evolves into Pidgeotto at level 18.

In "Electric Shock Showdown", Misty points out that after Pikachu evolves from using a Thunder Stone, the process is irreverisble.

Pokémon the Series: Diamond and Pearl[]

In "Ya See We Want an Evolution!", there is a location named the B-Button League, named for how the B button is used to prevent a Pokémon from evolving in the core series, and the location's goal is to raise Pokémon without evolving them.

Pokémon the Series: Black & White[]

In "An Epic Defense Force!", Luke's Golett seemingly evolves to Golurk in a Movie then devolves back to Golett. This repairs the Golurk Statue, since it turns out to be fictitious.

Pokémon the Series: XY and Pokémon the Series: XYZ[]

In "Dream a Little Dream From Me!", there is a group of Pokémon who evolved and devolved unnaturally, one actually missing its second evolved form.

Pokémon the Series: Sun & Moon[]

In "Final Rivals!", an evolution has occurred through multiple Pokémon of the same species combining, which was shown by Ash's Meltan and its horde.

Pokémon Journeys: The Series[]

In "It's All in the Name!", a destroyed satellite causes a group of Magnemite to undergo a process similar to evolving, as they begin to stick together. The end result of this forced evolution is unknown, however, as the Magnemite came to their senses in time and the evolution was aborted.

Manga[]

Pokémon Adventures[]

In Pokémon Adventures, evolution is more similar to the core series, although Pokémon still often evolve at critical moments of a battle, like in the anime.

Evolution first occurs in "Buzz Off, Electabuzz!", in which Red's Poliwhirl evolves into Poliwrath due to the Water Stone that had been found in the ocean floor around Vermilion Harbor.

Red's Eevee was capable of evolving between Vaporeon, Jolteon, and Flareon or even back into an Eevee, as a result of being experimented on by Team Rocket. Although the ability appeared to be advantageous, it was considered unnatural and resulted in Red's Eevee experiencing a lot of pain. Red's Eevee would eventually lose the ability when it evolved into an Espeon permanently.

In the Yellow Chapter, some trainers like Yellow or Lance can make Pokémon evolve and devolve at will.

Pokémon Pocket Monsters[]

In Pokémon Pocket Monsters, the first evolution occurs during the fourth chapter, when Clefairy hits a Zubat for stealing its food, after which the Zubat becomes a Golbat and proceeds to chase Clefairy.

In the seventeenth chapter it is shown that a Pokémon in its final evolutionary stage can become a different Pokémon within its evolutionary family, which is the case of Jolteon becoming a Vaporeon and Flareon as Red throws Evolutionary Stones at it.

In the twenty-third chapter, both Pikachu and Clefairy evolve with Evolutionary Stones into Raichu and Clefable, respectively, but both of them devolve eventually.

Trading Card Game[]

In the Pokémon Trading Card Game, evolution is done through evolution cards, a type of Pokémon card stating which Pokémon it evolves from; if the Pokémon mentioned is on a card that the player had used earlier, they can place the evolution card atop it to evolve the Pokémon. A player can evolve any Pokémon that they have in play, regardless of whether they are Active Pokémon or on the Bench.

A player can evolve a Basic Pokémon into a Stage 1 Pokémon, or a Stage 1 Pokémon into a Stage 2 Pokémon, because Stage 1 and Stage 2 Pokémon are Evolution cards. When a Pokémon evolves, it keeps all of the cards attached to it and any damage counters it already has, but any effects from moves or Special Conditions that had affected the Pokémon become removed when it evolves. A Pokémon in play that has another Pokémon underneath it is called an Evolved Pokémon, and it cannot use the moves and Abilities of its previous evolution unless a certain card allows it. It is possible for the Pokémon to devolve when exposed to certain cards.

The player cannot evolve a Pokémon when it first comes into play unless a card allows for it; in other words, evolving a Pokémon introduces it to gameplay, so it cannot evolve a second time on the same turn.

There are unique types of Evolution, such as the BREAK Evolution, in which when a Pokémon evolves into a Pokémon BREAK, it retains the moves, Abilities, weakness, resistance and Retreat Cost of its previous Evolution. Later sets feature Mega Evolutions, which are present in cards titled Mega Evolution Pokémon.

Trivia[]

• There are eight Pokémon that can evolve into two different Pokémon, but only two that evolve into more: Tyrogue (three) and Eevee (eight).
• Porygon is currently the only Pokémon to be able to evolve at level 1 into either of its evolutions, as they do not need a certain level to evolve.
• As of Generation VIII, there are 87 Pokémon that do not evolve in any way. This is discounting Legendary Pokémon, Mythical Pokémon, and form changes such as Mega Evolution.
• As of Generation IX, none of the Sinnoh-based, Kalos-based, Alola-based, or Paldea-based Pokémon have received any new cross-generation evolutions or cross-generation evolutionary regional forms, with the exception of Goomy, Bergmite, and Dartrix in Pokémon Legends: Arceus, where they received four Hisuian forms of their evolved forms—Sliggoo, Goodra, Avalugg, and Decidueye, respectively.

External links[]

• Evolution - Pokémon Conquest on Serebii

References[]