Edition differences: original GBA and Nintendo Switch (2026)

Battle data describes Generation III rules. Availability notes distinguish native catches, evolution and breeding from original GBA imports. GBA games can trade with compatible Generation III games after the network quest; Switch supports local FireRed/LeafGreen trading and cannot import Pokémon from other games. Transfers to Pokémon HOME are one way.

GBA: AuroraTicket and MysticTicket required historical event distributions. Switch: both tickets are added after entering the Hall of Fame, providing access to Deoxys on Birth Island and Lugia/Ho-Oh on Navel Rock. Other event Pokémon and GBA imports are not made available by these tickets.

Original GBA: a roaming Entei or Raikou that successfully ends an encounter with Roar disappears permanently because of a game bug. The Switch editions fix this Roar disappearance bug.

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Castform

#351 in the National Pokédex • Weather Pokémon

Normal

Shiny

Milotic Kecleon

Pokédex entries

FireRed

It has the ability to change its form into the sun, the rain, or a snow cloud, depending on the weather.

LeafGreen

It has the ability to change its form into the sun, the rain, or a snow cloud, depending on the weather.

Details

Type

Weak to

2×

Resists

Castform doesn't resist any types.

Immune to

0×

Growth

EV yield, catch rate, and experience details for this Pokémon.

EV yield	1 HP
Catch rate	45
Base Exp.	145

Eggs

Egg groups, gender ratio, and hatching details for this Pokémon.

Egg groups	Fairy Amorphous
Gender	50% male 50% female
Egg cycles	25 (6,655 steps)

Evolution

Evolution requirements shown in a compact table or chain view.

Castform

#351

No evolution stages listed for this game.

Held Items

Items this Pokémon may hold when encountered in the wild.

Mystic Water

FireRed

100%

LeafGreen

100%

Moves

Moves this Pokémon learns naturally by reaching specific levels.

		Class				Description
Start	Tackle	Physical	35	95	35	A physical attack in which the user charges, full body, into the foe.
10	Ember	Special	40	100	25	The foe is attacked with small flames. The foe may suffer a burn.
10	Water Gun	Special	40	100	25	The foe is struck with a lot of water expelled forcibly from the mouth.
10	Powder Snow	Special	40	100	25	Blasts the foe with a snowy gust. It may cause freezing.
20	Rain Dance	Status	-	-	5	A heavy rain falls for five turns, powering up WATER-type moves.
20	Sunny Day	Status	-	-	5	The sun blazes for five turns, powering up FIRE-type moves.
20	Hail	Status	-	-	10	A hailstorm lasting five turns damages all Pokémon except the ICE-type.
30	Weather Ball	Physical	50	100	10	An attack that varies in power and type depending on the weather.

Machine compatibility for Generation III. HM08 Dive cannot be obtained in FireRed or LeafGreen; a Pokémon must learn it in another Generation III game and be traded in on GBA. Switch has no incoming transfers from those games.

		Class				Description
TM03	Water Pulse	Special	60	100	20	An attack with a pulsing blast of water. It may also confuse the foe.
TM06	Toxic	Status	-	85	10	A move that badly poisons the foe. Its poison damage worsens every turn.
TM07	Hail	Status	-	-	10	A hailstorm lasting five turns damages all Pokémon except the ICE-type.
TM10	Hidden Power	Physical	-	100	15	An attack that varies in type and intensity depending on the user.
TM11	Sunny Day	Status	-	-	5	The sun blazes for five turns, powering up FIRE-type moves.
TM13	Ice Beam	Special	95	100	10	The foe is struck with an icy beam. It may freeze the foe solid.
TM14	Blizzard	Special	120	70	5	The foe is blasted with a blizzard. It may freeze the foe solid.
TM17	Protect	Status	-	-	10	Enables the user to evade all attacks. It may fail if used in succession.
TM18	Rain Dance	Status	-	-	5	A heavy rain falls for five turns, powering up WATER-type moves.
TM21	Frustration	Physical	-	100	20	This attack move grows more powerful the less the user likes its TRAINER.
TM22	Solar Beam	Special	120	100	10	A 2-turn move that blasts the foe with absorbed energy in the 2nd turn.
TM24	Thunderbolt	Special	95	100	15	A strong electrical attack that may also leave the foe paralyzed.
TM25	Thunder	Special	120	70	10	A brutal lightning attack that may also leave the foe paralyzed.
TM27	Return	Physical	-	100	20	This attack move grows more powerful the more the user likes its TRAINER.
TM30	Shadow Ball	Physical	80	100	15	A shadowy blob is hurled at the foe. May also lower the foe’s SP. DEF.
TM32	Double Team	Status	-	-	15	The user creates illusory copies of itself to raise its evasiveness.
TM34	Shock Wave	Special	60	-	20	A rapid jolt of electricity strikes the foe. It can’t be evaded.
TM35	Flamethrower	Special	95	100	15	The foe is scorched with intense flames. The foe may suffer a burn.
TM37	Sandstorm	Status	-	-	10	A 5-turn sandstorm that damages all types except ROCK, GROUND, and STEEL.
TM38	Fire Blast	Special	120	85	5	The foe is hit with an intense flame. It may leave the target with a burn.
TM42	Facade	Physical	70	100	20	An attack that is boosted if user is burned, poisoned, or paralyzed.
TM43	Secret Power	Physical	70	100	20	An attack that may have an additional effect that varies with the terrain.
TM44	Rest	Status	-	-	10	The user sleeps for two turns to fully restore HP and heal any status problem.
TM45	Attract	Status	-	100	15	If it is the other gender, the foe is made infatuated and unlikely to attack.
TM46	Thief	Special	40	100	10	An attack that may take the foe’s held item if the user isn’t holding one.
HM05	Flash	Status	-	70	20	A blast of light that cuts the foe’s accuracy. It also illuminates caves.

Tutors

Moves this Pokémon can learn from move tutors in this game.

	Class				Description
Body Slam	Physical	85	100	15	The user drops its full body on the foe. It may leave the foe paralyzed.
Double-Edge	Physical	120	100	15	A reckless, life-risking tackle that also hurts the user a little.
Mimic	Status	-	-	10	The user copies the move last used by the foe for the rest of the battle.
Substitute	Status	-	-	10	The user creates a decoy using one-quarter of its full HP.
Thunder Wave	Status	-	100	20	A weak electric shock that is sure to cause paralysis if it hits.

Breeding

Moves this Pokémon can inherit through breeding or similar methods.

		Class				Description
Future Sight		Special	80	90	15	Two turns after this move is used, the foe is attacked psychically.
Psych Up		Status	-	-	10	The user hypnotizes itself into copying any stat change made by the foe.

Traits

Ability options available to this Pokémon in this game.

Forecast

Changes with the weather.

#350

Milotic

#352

Kecleon

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