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Evolution is the first evolution in the Pokémon franchise when one Pokémon, upon reaching a certain level, using a certain stone, learning a certain move, or being traded, evolves into a different kind of Pokémon. In Pokémon Gold, Silver, Crystal, HeartGold and SoulSilver games, it is stated that Professor Elm is an expert on evolution, and discovered that Pikachu evolves from Pichu.
In the anime, during evolution, a Pokémon will become surrounded by a light and slowly change shape. In the Original, Advanced, and Diamond & Pearl series, the Pokémon is surrounded by a white light, while in the Best Wishes, XY, and Sun & Moon series, the Pokémon is surrounded by a golden or blue light.
To some Pokémon, evolution means growing up, while to others, it just refers becoming another species or getting upgraded. However, many of them retain the memories of their life during their pre-evolution form.
Contents
[show]
Normal Evolution tricks
Pokémon gain experience after battling wild Pokémon and Pokémon Trainers. The more experience a Pokémon gains, the more it levels up. When a Pokémon reaches a particular level, it will evolve into its next form (if it has one). This is very helpful to most Trainers who want their Pokémon to become stronger.
There are ways to share experience, such as allow a Pokémon you wish it to evolve to hold Exp. Share. It is a hold item that allows the user to earn experience even if it did not participate in the battle. This is a convenient tool if you want to level up a new or low-level Pokémon.
You can prevent evolution by simply press the 'B' button on the Game when the Pokémon is attempting to evolve. This is useful as some Pokémon will learn moves that cannot be learnt in a later form or if you want a Pokémon to learn a move earlier than usual. For example, Gabite. If you let Gible evolve into Gabite at level 24 it will learn Dragon Rush at level 49, but if you keep Gible it will learn Dragon Rush at level 37. Sometimes it doesn't matter if you let it evolve or not. The Pokémon can hold an Everstone, which keeps them from evolving, so that you don't have to keep cancelling the evolution every time the Pokémon levels up. However, if your Pokémon has evolved, it might not evolve again (Raticate, Linoone, etc.) Although some Pokémon can evolve more than once (Poliwhirl, Cascoon, etc.), some basic Pokémon just can't evolve, due to undiscovered forms, or if they are really rare (Chatot, Groudon, etc.) There are also Pokémon that can evolve into different things like love, choice, etc. For example, Eevee, Poliwhirl, Wurmple, or Kirlia.
Special Condition Evolutions
Stone Evolutions
Some Pokémon will not evolve unless you use a special stone called an Evolution Stone. These special Items are linked to the Pokémon's type. Here are a list of Pokémon that can evolve by giving them the stones.
Trading Evolutions
A small group of Pokémon refuses to evolve, no matter if you are at the appropriate level to trigger the evolve process, unless you trade them with a friend. Some Pokémon need to have a held item to evolve when trading with a friend. Another group require specific Pokémon to be trade in order to evolve.
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Evolution
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Evolution is the first evolution in the Pokémon franchise when one Pokémon, upon reaching a certain level, using a certain stone, learning a certain move, or being traded, evolves into a different kind of Pokémon. In Pokémon Gold, Silver, Crystal, HeartGold and SoulSilver games, it is stated that Professor Elm is an expert on evolution, and discovered that Pikachu evolves from Pichu.
In the anime, during evolution, a Pokémon will become surrounded by a light and slowly change shape. In the Original, Advanced, and Diamond & Pearl series, the Pokémon is surrounded by a white light, while in the Best Wishes, XY, and Sun & Moon series, the Pokémon is surrounded by a golden or blue light.
To some Pokémon, evolution means growing up, while to others, it just refers becoming another species or getting upgraded. However, many of them retain the memories of their life during their pre-evolution form.
Contents
[show]
Normal Evolution tricks
Pokémon gain experience after battling wild Pokémon and Pokémon Trainers. The more experience a Pokémon gains, the more it levels up. When a Pokémon reaches a particular level, it will evolve into its next form (if it has one). This is very helpful to most Trainers who want their Pokémon to become stronger.
There are ways to share experience, such as allow a Pokémon you wish it to evolve to hold Exp. Share. It is a hold item that allows the user to earn experience even if it did not participate in the battle. This is a convenient tool if you want to level up a new or low-level Pokémon.
You can prevent evolution by simply press the 'B' button on the Game when the Pokémon is attempting to evolve. This is useful as some Pokémon will learn moves that cannot be learnt in a later form or if you want a Pokémon to learn a move earlier than usual. For example, Gabite. If you let Gible evolve into Gabite at level 24 it will learn Dragon Rush at level 49, but if you keep Gible it will learn Dragon Rush at level 37. Sometimes it doesn't matter if you let it evolve or not. The Pokémon can hold an Everstone, which keeps them from evolving, so that you don't have to keep cancelling the evolution every time the Pokémon levels up. However, if your Pokémon has evolved, it might not evolve again (Raticate, Linoone, etc.) Although some Pokémon can evolve more than once (Poliwhirl, Cascoon, etc.), some basic Pokémon just can't evolve, due to undiscovered forms, or if they are really rare (Chatot, Groudon, etc.) There are also Pokémon that can evolve into different things like love, choice, etc. For example, Eevee, Poliwhirl, Wurmple, or Kirlia.
Special Condition Evolutions
Stone Evolutions
Some Pokémon will not evolve unless you use a special stone called an Evolution Stone. These special Items are linked to the Pokémon's type. Here are a list of Pokémon that can evolve by giving them the stones.
List of Pokémon that Evolve by Evolution Stones
Name Conditions Evolve to
VulpixFire Stone
Ninetales
GrowlitheArcanine
EeveeFlareon
Pansear
Simisear
PikachuThunder Stone
Raichu
Raichu (Alolan)
EeveeJolteon
EelektrikEelektross
PoliwhirlWater Stone
Poliwrath
ShellderCloyster
StaryuStarmie
EeveeVaporeon
LombreLudicolo
PanpourSimipour
GloomLeaf Stone
Vileplume
WeepinbellVictreebel
ExeggcuteExeggutor
Exeggutor (Alolan)
NuzleafShiftry
PansageSimisage
GloomSun Stone
Bellossom
SunkernSunflora
CottoneeWhimsicott
PetililLilligant
HelioptileHeliolisk
NidorinaMoon Stone
Nidoqueen
NidorinoNidoking
ClefairyClefable
JigglypuffWigglytuff
SkittyDelcatty
MunnaMusharna
RoseliaShiny Stone
Roserade
TogeticTogekiss
MinccinoCinccino
FloetteFlorges
Kirlia (♂ - Male)Dawn Stone
Gallade
Snorunt (♀ - Female)Froslass
MurkrowDusk Stone
Honchkrow
MisdreavusMismagius
LampentChandelure
DoubladeAegislash
Sandshrew (Alolan)Ice Stone
Sandslash (Alolan)
Vulpix (Alolan)Ninetales (Alolan)
Item Evolutions
Some items are needed for a Pokémon to evolve. If a Pokémon hold the item allowing it to evolve, let it level up once and it will then evolve into the second form.
List of Pokémon that Evolve by Attached Items
Name Conditions Evolve to
GligarHeld Item: Razor Fang at Night Gliscor
SneaselHeld Item: Razor Claw at Night Weavile
HappinyHeld Item: Oval Stone at Day Chansey
Trading Evolutions
A small group of Pokémon refuses to evolve, no matter if you are at the appropriate level to trigger the evolve process, unless you trade them with a friend. Some Pokémon need to have a held item to evolve when trading with a friend. Another group require specific Pokémon to be trade in order to evolve.
List of Pokémon that Evolve by Trading
Name Conditions Evolve to
KadabraNone Alakazam
HaunterGengar
MachokeMachamp
GravelerGolem
Graveler (Alolan)Golem (Alolan)
BoldoreGigalith
GurdurrConkeldurr
PhantumpTrevenant
PumpkabooGourgeist
OnixHeld Item: Metal Coat Steelix
ScytherScizor
PoliwhirlHeld Item: King's Rock Politoed
SlowpokeSlowking
SeadraHeld Item: Dragon Scale Kingdra
PorygonHeld Item: Up-Grade Porygon2
ClamperlHeld Item: Deepseascale Gorebyss
ClamperlHeld Item: Deepseatooth Huntail
ElectabuzzHeld Item: Electirizer Electivire
MagmarHeld Item: Magmarizer Magmortar
RhydonHeld Item: Protector Rhyperior
Porygon2Held Item: Dubious Disc Porygon-Z
FeebasHeld Item: Prism Scale (Generation V-) Milotic
DusclopsHeld Item: Reaper Cloth Dusknoir
ShelmetTrade with Karrablast Accelgor
KarrablastTrade with Shelmet Escavalier
SpritzeeHeld Item: Sachet Aromatisse
SwirlixHeld Item: Whipped Dream Slurpuff
Gender Evolution
Small groups of Pokémon requires a gender to evolve into the next stage.
List of Pokémon that Evolve by Gender
Name Conditions Evolve to
Burmy![]()
![]()
Level 20, (♀ - Female) Wormadam
![]()
![]()
Level 20, (♂ - Male) Mothim
CombeeLevel 25, (♀ - Female) Vespiquen
SalanditLevel 33, (♀ - Female) Salazzle
Friendship Evolutions
Certain Pokémon, especially baby Pokémon, requires friendship with its trainer and if they are fond enough, they are willing to evolve. Some Pokémon only evolves in a certain time of the day with friendship.
List of Pokémon that Evolve by Friendship
Name Conditions Evolve to
GolbatNone Crobat
ChanseyBlissey
PichuPikachu
CleffaClefairy
IgglybuffJigglypuff
TogepiTogetic
AzurillMarill
BunearyLopunny
MunchlaxSnorlax
WoobatSwoobat
SwadloonLeavanny
Type: NullSilvally
Eeveeat Day Espeon
BudewRoselia
RioluLucario
Eeveeat Night Umbreon
ChinglingChimecho
Meowth (Alolan)Persian (Alolan)
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Contribute
Evolution
14,609pages on
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Add New Page
Edit
Talk1 Share
Evolution is the first evolution in the Pokémon franchise when one Pokémon, upon reaching a certain level, using a certain stone, learning a certain move, or being traded, evolves into a different kind of Pokémon. In Pokémon Gold, Silver, Crystal, HeartGold and SoulSilver games, it is stated that Professor Elm is an expert on evolution, and discovered that Pikachu evolves from Pichu.
In the anime, during evolution, a Pokémon will become surrounded by a light and slowly change shape. In the Original, Advanced, and Diamond & Pearl series, the Pokémon is surrounded by a white light, while in the Best Wishes, XY, and Sun & Moon series, the Pokémon is surrounded by a golden or blue light.
To some Pokémon, evolution means growing up, while to others, it just refers becoming another species or getting upgraded. However, many of them retain the memories of their life during their pre-evolution form.
Contents
[show]
Normal Evolution tricks
Pokémon gain experience after battling wild Pokémon and Pokémon Trainers. The more experience a Pokémon gains, the more it levels up. When a Pokémon reaches a particular level, it will evolve into its next form (if it has one). This is very helpful to most Trainers who want their Pokémon to become stronger.
There are ways to share experience, such as allow a Pokémon you wish it to evolve to hold Exp. Share. It is a hold item that allows the user to earn experience even if it did not participate in the battle. This is a convenient tool if you want to level up a new or low-level Pokémon.
You can prevent evolution by simply press the 'B' button on the Game when the Pokémon is attempting to evolve. This is useful as some Pokémon will learn moves that cannot be learnt in a later form or if you want a Pokémon to learn a move earlier than usual. For example, Gabite. If you let Gible evolve into Gabite at level 24 it will learn Dragon Rush at level 49, but if you keep Gible it will learn Dragon Rush at level 37. Sometimes it doesn't matter if you let it evolve or not. The Pokémon can hold an Everstone, which keeps them from evolving, so that you don't have to keep cancelling the evolution every time the Pokémon levels up. However, if your Pokémon has evolved, it might not evolve again (Raticate, Linoone, etc.) Although some Pokémon can evolve more than once (Poliwhirl, Cascoon, etc.), some basic Pokémon just can't evolve, due to undiscovered forms, or if they are really rare (Chatot, Groudon, etc.) There are also Pokémon that can evolve into different things like love, choice, etc. For example, Eevee, Poliwhirl, Wurmple, or Kirlia.
Special Condition Evolutions
Stone Evolutions
Some Pokémon will not evolve unless you use a special stone called an Evolution Stone. These special Items are linked to the Pokémon's type. Here are a list of Pokémon that can evolve by giving them the stones.
List of Pokémon that Evolve by Evolution Stones
Name Conditions Evolve to
VulpixFire Stone
Ninetales
GrowlitheArcanine
EeveeFlareon
Pansear
Simisear
PikachuThunder Stone
Raichu
Raichu (Alolan)
EeveeJolteon
EelektrikEelektross
PoliwhirlWater Stone
Poliwrath
ShellderCloyster
StaryuStarmie
EeveeVaporeon
LombreLudicolo
PanpourSimipour
GloomLeaf Stone
Vileplume
WeepinbellVictreebel
ExeggcuteExeggutor
Exeggutor (Alolan)
NuzleafShiftry
PansageSimisage
GloomSun Stone
Bellossom
SunkernSunflora
CottoneeWhimsicott
PetililLilligant
HelioptileHeliolisk
NidorinaMoon Stone
Nidoqueen
NidorinoNidoking
ClefairyClefable
JigglypuffWigglytuff
SkittyDelcatty
MunnaMusharna
RoseliaShiny Stone
Roserade
TogeticTogekiss
MinccinoCinccino
FloetteFlorges
Kirlia (♂ - Male)Dawn Stone
Gallade
Snorunt (♀ - Female)Froslass
MurkrowDusk Stone
Honchkrow
MisdreavusMismagius
LampentChandelure
DoubladeAegislash
Sandshrew (Alolan)Ice Stone
Sandslash (Alolan)
Vulpix (Alolan)Ninetales (Alolan)
Item Evolutions
Some items are needed for a Pokémon to evolve. If a Pokémon hold the item allowing it to evolve, let it level up once and it will then evolve into the second form.
List of Pokémon that Evolve by Attached Items
Name Conditions Evolve to
GligarHeld Item: Razor Fang at Night Gliscor
SneaselHeld Item: Razor Claw at Night Weavile
HappinyHeld Item: Oval Stone at Day Chansey
Trading Evolutions
A small group of Pokémon refuses to evolve, no matter if you are at the appropriate level to trigger the evolve process, unless you trade them with a friend. Some Pokémon need to have a held item to evolve when trading with a friend. Another group require specific Pokémon to be trade in order to evolve.
List of Pokémon that Evolve by Trading
Name Conditions Evolve to
KadabraNone Alakazam
HaunterGengar
MachokeMachamp
GravelerGolem
Graveler (Alolan)Golem (Alolan)
BoldoreGigalith
GurdurrConkeldurr
PhantumpTrevenant
PumpkabooGourgeist
OnixHeld Item: Metal Coat Steelix
ScytherScizor
PoliwhirlHeld Item: King's Rock Politoed
SlowpokeSlowking
SeadraHeld Item: Dragon Scale Kingdra
PorygonHeld Item: Up-Grade Porygon2
ClamperlHeld Item: Deepseascale Gorebyss
ClamperlHeld Item: Deepseatooth Huntail
ElectabuzzHeld Item: Electirizer Electivire
MagmarHeld Item: Magmarizer Magmortar
RhydonHeld Item: Protector Rhyperior
Porygon2Held Item: Dubious Disc Porygon-Z
FeebasHeld Item: Prism Scale (Generation V-) Milotic
DusclopsHeld Item: Reaper Cloth Dusknoir
ShelmetTrade with Karrablast Accelgor
KarrablastTrade with Shelmet Escavalier
SpritzeeHeld Item: Sachet Aromatisse
SwirlixHeld Item: Whipped Dream Slurpuff
Gender Evolution
Small groups of Pokémon requires a gender to evolve into the next stage.
List of Pokémon that Evolve by Gender
Name Conditions Evolve to
Burmy![]()
![]()
Level 20, (♀ - Female) Wormadam
![]()
![]()
Level 20, (♂ - Male) Mothim
CombeeLevel 25, (♀ - Female) Vespiquen
SalanditLevel 33, (♀ - Female) Salazzle
Friendship Evolutions
Certain Pokémon, especially baby Pokémon, requires friendship with its trainer and if they are fond enough, they are willing to evolve. Some Pokémon only evolves in a certain time of the day with friendship.
List of Pokémon that Evolve by Friendship
Name Conditions Evolve to
GolbatNone Crobat
ChanseyBlissey
PichuPikachu
CleffaClefairy
IgglybuffJigglypuff
TogepiTogetic
AzurillMarill
BunearyLopunny
MunchlaxSnorlax
WoobatSwoobat
SwadloonLeavanny
Type: NullSilvally
Eeveeat Day Espeon
BudewRoselia
RioluLucario
Eeveeat Night Umbreon
ChinglingChimecho
Meowth (Alolan)Persian (Alolan)
Location Based Evolutions
Special Pokémon evolve at a certain area of location.
List of Pokémon that Evolve by Locations
Name Locations Evolve to
MagnetonMt. Coronet (Generation IV), Chargestone Cave (Generation V), Route 13 (Generation VI), Vast Poni Canyon (Generation VII) Magnezone
NosepassProbopass
EeveeMoss Rock at Eterna Forest (Generation IV), Moss Rock at Pinwheel Forest (Generation V), Route 20 (Generation VI), Moss Rock at Lush Jungle (Generation VII) Leafeon
Ice Rock at Route 217 (Generation IV), Ice Rock at Twist Mountain (Generation V), Frost Cavern (Generation VI), Ice Rock at Mount Lanakila (Generation VII) Glaceon
CharjabugVast Poni Canyon Vikavolt
Crabrawleratop Mount Lanakila Crabominable
Attack Based Evolutions
Certain Pokémon need to know a move to evolve. This method was introduced in Generation IV, starting with Diamond/Pearl/Platinum.
List of Pokémon that Evolve by Learning Moves
Name Conditions Evolve to
Tangelalearning AncientPower Tangrowth
YanmaYanmega
PiloswineMamoswine
Bonslylearning Mimic Sudowoodo
Mime Jr.Mr. Mime
Lickitunglearning Rollout Lickilicky
Aipomlearning Double Hit Ambipom
Steeneelearning Stomp Tsareena
Time Based Evolutions
The current time of day will sometimes affect evolution. This method was introduced in Generation VI, starting with X/Y/OR/AS.
List of Pokémon that Evolve by Time
Name Conditions Evolve to
TyruntLevel 39+ during the day. Tyrantrum
AmauraLevel 39+ during the night. Aurorus
Rattata (Alolan)Level 20+ during the night. Raticate (Alolan)
CuboneLevel 28+ during the night. Marowak (Alolan)
YungoosLevel 20+ during the day. Gumshoos
RockruffLevel 25+ during the day. Lycanroc (Sun)
Level 25+ during the night. Lycanroc (Moon)
FomantisLevel 34+ during the day. Lurantis
Unique Evolutions
Some Pokémon have certain type of unique way of evolve.
List of Pokémon that Evolve by Unique Way
Name Conditions Evolve to
Eevee2+ Affection in Pokémon-Amie, learn a
-type move. Sylveon
WurmpleLevel 7 (Random depending on PV - Personality Value) Silcoon
Cascoon
TyrogueLevel 20, Attack stats more than Defense Hitmonlee
Level 20, Defense stats more than Attack Hitmonchan
Level 20, Attack stats equal to Defense Hitmontop
FeebasMaxed out Beauty Condition and then level up (Generation III - IV) Milotic
NincadaLevel 20, with empty Poké Ball and an open slot on your party. Shedinja
MantykeA Remoraid in your party and then level up. Mantine
PanchamLevel 32+ with a
-type in your party. Pangoro
InkayLevel 30+ while holding the Nintendo 3DS upside down. Malamar
SliggooLevel 50+ in the rain. Goodra
CosmoemLevel 53+ in Pokémon Sun. Solgaleo
Level 53+ in Pokémon Moon. Lunala
Mega Stone Evolutions
Certain Pokémon will be able to evolve into a Mega form, the final form for one-evolution families and second/true final form for two-evolution families with the use of a Mega Stone, a held object. However this evolution will devolve back into their previous form at the end of the battle.
List of Pokémon Mega Evolve
Name Conditions Evolve to
Venusaur Hold Venusaurite
Mega Venusaur
Charizard Hold Charizardite X or Y
Mega Charizard X
Mega Charizard Y
Blastoise Hold Blastoisite
Mega Blastoise
Beedrill Hold Beedrilite
Mega Beedrill
Pidgeot Hold Pidgeotite
Mega Pidgeot
Alakazam Hold Alakazamite
Mega Alakazam
Slowbro Hold Slowbronite
Mega Slowbro
Gengar Hold Gengarite
Mega Gengar
Kangaskhan Hold Kangaskhanite
Mega Kangaskhan
Pinsir Hold Pinsirite
Mega Pinsir
Gyarados Hold Gyaradosite
Mega Gyarados
Aerodactyl Hold Aerodactylite
Mega Aerodactyl
Mewtwo Hold Mewtwonite X or Y
Mega Mewtwo X
Mega Mewtwo Y
Ampharos Hold Ampharosite
Mega Ampharos
Steelix Hold Steelixite
Mega Steelix
Scizor Hold Scizorite
Mega Scizor
Heracross Hold Heracronite
Mega Heracross
Houndoom Hold Houndoomite
Mega Houndoom
Tyranitar Hold Tyranitarite
Mega Tyranitar
Sceptile Hold Sceptilite
Mega Sceptile
Blaziken Hold Blazikenite
Mega Blaziken
Swampert Hold Swampertite
Mega Swampert
Gardevoir Hold Gardevoirite
Mega Gardevoir
Sableye Hold Sablenite
Mega Sableye
Mawile Hold Mawilite
Mega Mawile
Aggron Hold Aggronite
Mega Aggron
Medicham Hold Medichamite
Mega Medicham
Manectric Hold Manectite
Mega Manectric
Sharpedo Hold Sharpedonite
Mega Sharpedo
Camerupt Hold Cameruptite
Mega Camerupt
Altaria Hold Altarianite
Mega Altaria
Banette Hold Banettite
Mega Banette
Absol Hold Absolite
Mega Absol
Glalie Hold Glalitite
Mega Glalie
Salamence Hold Salamencite
Mega Salamence
Metagross Hold Metagrossite
Mega Metagross
Latias Hold Latiasite
Mega Latias
Latios Hold Latiosite
Mega Latios
Rayquaza Learn Dragon Ascent
Mega Rayquaza
Lopunny Hold Lopunnite
Mega Lopunny
Garchomp Hold Garchompite
Mega Garchomp
Lucario Hold Lucarionite
Mega Lucario
Abomasnow Hold Abomanite
Mega Abomasnow
Gallade Hold Galladite
Mega Gallade
Audino Hold Audinite
Mega Audino
Diancie Hold Diancite
Mega Diancie
Bond Phenomenon
There's a special evolution that Ash's Greninja can do due to his strong bond with Ash called Ash-Greninja, that was later described as Bond Phenomenon.
List of Pokémon with Bond Phenomenon
Name Conditions Evolve to
Greninja (Battle Bond) after defeating a Pokémon
Ash-Greninja
Devolution
Primal Reversion
Primal Reversion is a similar state to Mega Evolution, but the Pokémon devolve to a previous state in the past.
It is a possible game mechanic in Pokémon Omega Ruby & Alpha Sapphire, most likely because this mechanic was founded during development of Pokémon Omega Ruby & Alpha Sapphire.
Other
Devolution is a form of reverse evolution when a Pokemon reverts to a previous state. Devolution does not exist in the games but is common in the Manga and TCG. Devolution is achieved mainly unnaturally - through experimentation, or Devolution Spray. Though certain Pokemon, such as Isamu's Clefairy and Pikachu are capable of devolving themselves. The TCG also has it that Eeveelutions can revert into Eevee and that Mew has two special attacks named the Devolution Beam and Devo Crush - both of which which devolves the Pokemon hit by the attack. Golurk and Jirachi also possess special attacks which allow them to devolve an opposing Pokemon.
Anime
In the Anime Episode, Electric Shock Showdown, Misty points out that once Pikachu evolves with the use of the Thunder Stone, Pikachu won't revert back.
In An Epic Defense Force, Luke's Golett seemingly evolves to Golurk in a Movie then Devolves back to Golett, repairing the Golurk Statue, as it turns out to be fictitious.
Another instance of the non-existence of Devolution, is when Bonnie requested Ash's Frogadier to devolve back to Froakie, Clemont said that it would be impossible.
Trivia
- There are eight Pokémon that can evolve into two different Pokémon, but only two that evolve into more: Tyrogue and Eevee.
- As of Generation VII, there are sixty-six Pokémon that do not evolve in any way. This is discounting the fifty-six Legendary Pokémon and seventeen Mythical Pokémon.
- 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