castform #351
Type Matchups
Weak to (2x damage):
Immune to (0x damage):
castform
Generation III · #0351 — Weather Pokémon
Castform, known as the Weather Pokémon, is a unique Normal-type Pokémon introduced in Generation III that defies traditional classification by virtue of its remarkable ability to transform based on environmental conditions. With the National Pokédex number 351, Castform represents a fascinating study in adaptive biology and environmental responsiveness within the Pokémon world. Standing at merely 0.3 meters tall and weighing only 0.8 kilograms, this diminutive creature possesses one of the most distinctive mechanics in Pokémon battles: its signature Forecast ability, which grants it the capacity to change both its physical form and elemental type in response to weather conditions. This transformative nature makes Castform a particularly intriguing choice for trainers who wish to harness the power of weather-based strategies in competitive battling.
Base Stats
Height
0.3m
Weight
0.8kg
Category
Weather Pokémon
Gender
Male 50% / Female 50%
Color
gray
Shape
ball
Habitat
grassland
Abilities
Changes castform's type and form to match the weather.
Castform Biology & Physical Characteristics
Castform's extraordinary biology centers around its cellular structure, which scientific research has revealed to be composed of molecules remarkably similar to water itself. This molecular composition renders Castform extraordinarily sensitive to changes in temperature and humidity, causing its cellular structure to undergo dramatic chemical alterations in response to weather phenomena. In its neutral state, Castform appears as a plain gray cloud approximately one foot in height, with a distinctive wisp extending upward from its rounded head. According to Pokédex research, this artificial Pokémon gained its weather-dependent abilities as a means to protect its otherwise vulnerable tiny body from environmental extremes. The transformation mechanism operates seamlessly during battle: when exposed to harsh sunlight, Castform assumes its Sunny Form and becomes a Fire-type, its body assuming a bright yellow and orange coloration reminiscent of the sun itself. During rainfall, it transforms into its Rainy Form, becoming a Water-type with a darker blue coloration and cloud-like appearance. Finally, when hail conditions manifest, Castform shifts into its Snowy Form, becoming an Ice-type with a white crystalline appearance. Remarkably, Castform's base statistics remain constant across all forms at a perfectly balanced 70 across every attribute including HP, Attack, Defense, Special Attack, Special Defense, and Speed, yielding a total base stat of 420.
Pokedex Numbers
Training
Breeding
Castform Breeding, Gender Ratio & Egg Groups
Castform exhibits an equal gender distribution, with precisely fifty percent of wild specimens and bred offspring being male while the remaining fifty percent are female, providing balanced representation across both sexes. This equal gender ratio reflects standard Pokémon breeding mechanics and allows trainers equal flexibility in breeding projects regardless of gender preferences. Castform belongs to two egg groups simultaneously: the Fairy egg group and the Amorphous egg group, a dual classification that expands its breeding compatibility options considerably. The Fairy egg group association connects Castform to creatures of magical and whimsical nature, while its simultaneous classification in the Amorphous group—typically reserved for gelatinous, cloud-like, and formless Pokémon—directly reflects its cloud-based physiology and water-molecule composition. This dual classification suggests that Castform's breeding potential includes partners from both traditionally magical species and other shapeshifting or cloud-like creatures. The species features a notably moderate base happiness value of 70, indicating that while Castform breeds readily and cooperates with trainers, it is not among the most enthusiastically affectionate creatures available. With a hatch counter of 25 cycles, representing approximately 6,169 to 6,425 steps required for egg incubation, Castform presents a moderately accessible breeding option for dedicated trainers seeking to build teams around its unique weather-dependent abilities.
Held Items
Sprites
Held Items
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
mystic-water
type-enhancement
Held: Water-Type moves from holder do 20% more damage.
Cost: 1000
TMs & HMs
tm01
lets go pikachu lets go eevee
tm01
ultra sun ultra moon
tm01
sun moon
tm02
crystal
tm02
gold silver
tm03
ruby sapphire
tm03
platinum
tm03
firered leafgreen
tm03
heartgold soulsilver
tm03
diamond pearl
tm03
emerald
tm03
xd
tm03
colosseum
tm05
lets go pikachu lets go eevee
tm06
yellow
tm06
gold silver
tm06
red blue
tm06
crystal
tm06
emerald
tm06
firered leafgreen
+663 more TMs/HMs
Castform Evolution, Mega Evolution & Special Forms
Castform represents a curious anomaly in the evolutionary landscape of Pokémon, as it is not known to evolve from any other Pokémon species nor does it evolve into any subsequent form. This stasis in its evolutionary chain is particularly notable given Castform's significant biological adaptability and the prevalence of evolution mechanics throughout the Pokémon world. Rather than pursuing traditional evolution, Castform instead channels its transformative potential into its Forecast ability, achieving morphological variation through environmental responsivity rather than generational progression. The lack of a Mega Evolution form further distinguishes Castform from many contemporary Pokémon, positioning it as a creature that achieves its full potential through the strategic manipulation of battle conditions rather than the consumption of Mega Stones. This design choice emphasizes Castform's singular identity as the Weather Pokémon, with its transformations serving as its primary mechanism for strategic flexibility and combat adaptation. Some researchers hypothesize that Castform's cellular water-based composition may render it inherently resistant to the biological changes typically associated with evolution, maintaining its current form as an optimal expression of its unique physiological characteristics.
Where to Find
hoenn route 119
hoenn
+2 more
unova route 6
unova
tapu village
alola
+5 more
malie garden
alola
+1 more
lush jungle
alola
+21 more
haina desert
alola
+13 more
alola route 17
alola
+13 more
mount lanakila
alola
+5 more
exeggutor island
alola
+5 more
Castform Behaviour and Natural Habitat
Castform's behavior and emotional state are profoundly intertwined with meteorological conditions, reflecting an unusual degree of environmental responsivity among Pokémon species. The Sapphire Pokédex entry notes that Castform's feelings quite literally change with the weather, suggesting an almost sentient responsiveness to atmospheric conditions rather than a purely mechanical transformation. This emotional variability may explain why Castform thrives in regions with diverse and dramatic weather patterns, where it can fully express its multifaceted nature. Trainers who capture Castform often report that the Pokémon's demeanor shifts alongside its physical form, becoming energetic and confident during sunny conditions, calm and serene during rain, and contemplative during snow. While Castform is capable of existing in its gray Normal-type form during calm weather or outside of battle, it appears to be most comfortable and effective when environmental conditions trigger one of its specialized forms. The Pokémon's base happiness value of 70 suggests a generally moderate disposition, though many trainers report that Castform becomes notably more cooperative and engaged when weather conditions are actively shifting around it.
Pokedex Entries
Generation III
CASTFORM’s appearance changes with the weather. This POKéMON gained the ability to use the vast power of nature to protect its tiny body.
CASTFORM borrows the power of nature to transform itself into the guises of the sun, rain clouds, and snow clouds. This POKéMON’s feelings change with the weather.
It alters its form depending on the weather. Changes in the climate such as the temperature and humidity appear to affect its cellular structure.
It has the ability to change its form into the sun, the rain, or a snow cloud, depending on the weather.
Generation IV
Its appearance changes with the weather. Recently, its molecules were found to be just like water.
This Pokémon can change its cells, taking different forms based on the temperature and humidity.
Generation V
Its appearance changes with the weather. Recently, its molecules were found to be just like water.
Temperature and weather affect its cellular structure, so this Pokémon changes form according to the weather.
Generation VI
This Pokémon can change its cells, taking different forms based on the temperature and humidity.
It has the ability to change its form into the sun, the rain, or a snow cloud, depending on the weather.
Castform’s appearance changes with the weather. This Pokémon gained the ability to use the vast power of nature to protect its tiny body.
Castform borrows the power of nature to transform itself into the guises of the sun, rain, and snow-clouds. This Pokémon’s feelings change with the weather.
Generation VII
It changes its form depending on the weather. Changes in the temperature or humidity appear to affect its cellular structure.
Although its form changes with the weather, that is apparently the result of a chemical reaction and not the result of its own free will.
Its form changes on its own, due to its cells’ sensitive reactions to temperature and humidity.
Its form changes depending on the weather. The rougher conditions get, the rougher Castform’s disposition!
Castform Name Origin & Design Inspiration
Castform's name derives from a combination of English linguistic elements, with "cast" referring to its ability to assume different forms and "form" explicitly denoting this morphological variability. The Japanese name, Powalen, appears to combine phonetic elements suggesting weather and cloud-like characteristics, with "wa" potentially referencing water and "ren" suggesting versatility or transformation. The design philosophy underlying Castform emphasizes visual simplicity and intuitive communication of its weather-dependent nature through color and shape modifications. In its Normal form, the plain gray coloration and cloud-like silhouette immediately signal its meteorological associations without overwhelming the viewer with detail. The Sunny Form's vibrant yellows and oranges unmistakably evoke solar imagery, while the Rainy Form's blues and darker tones clearly reference aqueous conditions. The Snowy Form's crystalline white appearance and icy aesthetic provide sharp contrast to its other manifestations. This color-coded design strategy allows trainers and viewers to instantly recognize Castform's current form and associated type advantage without requiring specific knowledge of the Pokémon species, representing an elegant solution to the challenge of designing a Pokémon with multiple forms. The overall aesthetic, combining simplicity with functional clarity, exemplifies Generation III's refined approach to character design.
Learnable Moves
Castform can learn 70 moves:
Move | Type | Cat. | Power | Acc. | PP |
|---|---|---|---|---|---|
| amnesia | psychic | Status | — | — | 20 |
| attract | normal | Status | — | 100 | 15 |
| avalanche | ice | Physical | 60 | 100 | 10 |
| blizzard | ice | Special | 110 | 70 | 5 |
| body slam | normal | Physical | 85 | 100 | 15 |
| captivate | normal | Status | — | 100 | 20 |
| clear smog | poison | Special | 50 | — | 15 |
| confide | normal | Status | — | — | 20 |
| cosmic power | psychic | Status | — | — | 20 |
| defense curl | normal | Status | — | — | 40 |
| defog | flying | Status | — | — | 15 |
| disable | normal | Status | — | 100 | 20 |
| double team | normal | Status | — | — | 15 |
| double edge | normal | Physical | 120 | 100 | 15 |
| ember | fire | Special | 40 | 100 | 25 |
| endure | normal | Status | — | — | 10 |
| energy ball | grass | Special | 90 | 100 | 10 |
| facade | normal | Physical | 70 | 100 | 20 |
| fire blast | fire | Special | 110 | 85 | 5 |
| flamethrower | fire | Special | 90 | 100 | 15 |
| flash | normal | Status | — | 100 | 20 |
| frustration | normal | Physical | — | 100 | 20 |
| future sight | psychic | Special | 120 | 100 | 10 |
| guard swap | psychic | Status | — | — | 10 |
| hail | ice | Status | — | — | 10 |
| headbutt | normal | Physical | 70 | 100 | 15 |
| hex | ghost | Special | 65 | 100 | 10 |
| hidden power | normal | Special | 60 | 100 | 15 |
| hurricane | flying | Special | 110 | 70 | 10 |
| hydro pump | water | Special | 110 | 80 | 5 |
| ice beam | ice | Special | 90 | 100 | 10 |
| icy wind | ice | Special | 55 | 95 | 15 |
| incinerate | fire | Special | 60 | 100 | 15 |
| last resort | normal | Physical | 140 | 100 | 5 |
| lucky chant | normal | Status | — | — | 30 |
| mimic | normal | Status | — | — | 10 |
| natural gift | normal | Physical | — | 100 | 15 |
| ominous wind | ghost | Special | 60 | 100 | 5 |
| powder snow | ice | Special | 40 | 100 | 25 |
| protect | normal | Status | — | — | 10 |
| psych up | normal | Status | — | — | 10 |
| rain dance | water | Status | — | — | 5 |
| reflect type | normal | Status | — | — | 15 |
| rest | psychic | Status | — | — | 5 |
| retaliate | normal | Physical | 70 | 100 | 5 |
| return | normal | Physical | — | 100 | 20 |
| round | normal | Special | 60 | 100 | 15 |
| sandstorm | rock | Status | — | — | 10 |
| scald | water | Special | 80 | 100 | 15 |
| secret power | normal | Physical | 70 | 100 | 20 |
| shadow ball | ghost | Special | 80 | 100 | 15 |
| shock wave | electric | Special | 60 | — | 20 |
| sleep talk | normal | Status | — | — | 10 |
| snore | normal | Special | 50 | 100 | 15 |
| solar beam | grass | Special | 120 | 100 | 10 |
| substitute | normal | Status | — | — | 10 |
| sunny day | fire | Status | — | — | 5 |
| swagger | normal | Status | — | 85 | 15 |
| swift | normal | Special | 60 | — | 20 |
| tackle | normal | Physical | 40 | 100 | 35 |
| tailwind | flying | Status | — | — | 15 |
| thief | dark | Physical | 60 | 100 | 25 |
| thunder | electric | Special | 110 | 70 | 10 |
| thunder wave | electric | Status | — | 90 | 20 |
| thunderbolt | electric | Special | 90 | 100 | 15 |
| toxic | poison | Status | — | 90 | 10 |
| water gun | water | Special | 40 | 100 | 25 |
| water pulse | water | Special | 60 | 100 | 20 |
| weather ball | normal | Special | 50 | 100 | 10 |
| work up | normal | Status | — | — | 30 |
Castform Competitive Battle Guide
In competitive Pokémon battles, Castform occupies a specialized niche as a weather-dependent tactical option rather than a conventional powerhouse, with its viability heavily dependent on effective weather establishment and maintenance. Its perfectly balanced base stats of 70 across all six attributes, totaling 420, grant Castform respectable competence in any statistical category but leave it without the extreme specialization that characterizes most competitive Pokémon. The real value of Castform emerges from its Forecast ability, which not only transforms its appearance and type but also significantly alters its matchup potential against opposing teams. When deployed under harsh sunlight, Castform's conversion to Fire-type grants it access to a completely different type chart and movepool advantages, making it capable of countering grass, ice, bug, and steel-type threats that would otherwise wall it in its normal form. Similarly, its Rainy Form Water-type designation provides alternative coverage against fire, ground, and rock-type opponents, while its Snowy Form Ice-type transformation enables it to threaten the dragon-type creatures that frequently dominate competitive environments. However, Castform's modest base stats mean it requires significant support from teammates capable of establishing and maintaining favorable weather conditions, making it best suited to dedicated weather-based team structures rather than standalone competitive applications. Its moderate speed of 70 necessitates that opposing teams are already weakened before Castform can effectively capitalize on type advantages, positioning it as a mid-game threat rather than a primary sweeper or wall.
Commonly Asked Questions About Castform
What type is Castform?
Castform is a normal type Pokemon.
What does Castform evolve from?
Castform does not evolve.
What are Castform's weaknesses?
Castform is weak to fighting type moves.
Where can I find Castform?
Castform can be found in hoenn route 119 (hoenn), unova route 6 (unova) and tapu village (alola) and 6 other locations.
Castform Cultural Impact & Franchise History
Castform has developed a modest but dedicated following within Pokémon communities, particularly among players who appreciate creative team-building strategies and weather-dependent mechanics. The Pokémon's unique weather transformation mechanic has inspired numerous competitive strategies and breeding projects focused on synergizing Castform with weather-setting teammates, contributing meaningfully to the tactical diversity within the Pokémon battling community. In the Pokémon anime, Castform has appeared across multiple series and regions, though it has never served as a primary character's main team member, instead appearing as an occasional encounter or opponent Pokémon. The species' gentle appearance and relatable emotional responsiveness to environmental conditions have resonated with casual players and younger audiences, leading to its inclusion in numerous merchandise lines including plushies, trading cards, and collectible figurines. Castform's design has also influenced broader discussions within the fan community regarding the potential for more weather-dependent Pokémon mechanics, with many players crediting the species with demonstrating the strategic possibilities inherent in mechanically linking Pokémon abilities to battle environment conditions. The Pokémon's distinctive visual transformation across its multiple forms has made it a popular subject for fan art and creative reinterpretations, with communities frequently celebrating the aesthetic elegance of its form-shifting mechanics.
Where to Find Castform in Every Pokémon Game
Castform was originally introduced in Generation III's Pokémon Ruby and Sapphire versions, where it could be encountered in the Hoenn region, reflecting its design's thematic connection to that generation's introduction of weather-based mechanics. Throughout subsequent generations, Castform's availability has expanded to include most main-series Pokémon games, though specific encounter locations and acquisition methods have varied considerably. In Generation IV's Diamond, Pearl, and Platinum versions, Castform was available through specific in-game encounters or breeding. Generation V's Black 2 and White 2 versions featured Castform in their regional Pokédex, with local number 163, making it relatively accessible to players progressing through those games. The species maintained presence in Generation VI's Omega Ruby and Alpha Sapphire remakes, where it received the same regional position as its original Generation III incarnations with local number 147. Pokémon Sun and Moon integrated Castform into the Alola regional Pokédex as entry 181, while subsequent Ultra Sun and Ultra Moon editions assigned it local number 220, indicating consistent availability throughout Generation VII. The Pokémon's inclusion in Generation VIII games and continuing presence in Pokémon Sword and Shield ensured modern trainers could readily acquire specimens for their competitive and casual teams. With a capture rate of 45, Castform presents a moderately challenging encounter requiring approximately 11.9% capture probability with a standard Poké Ball against a fully healthy specimen, suggesting persistence but not extraordinary difficulty when attempting to acquire this unique Weather Pokémon for personal collections.