Castform (Pokémon)
Castform (Japanese: ポワルン Powalen) is a Normal-type Pokémon introduced in Generation III.
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This article is about the species. For a specific instance of this species, see Castform (disambiguation). |
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Types
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Ability
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Gender ratio
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Catch rate
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Breeding
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Height
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Weight
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Base experience yield
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Leveling rate
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EV yield
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Shape
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Footprint
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Pokédex color
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Base friendship
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External Links
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While it is not known to evolve into or from any other Pokémon, Castform has the ability to change forms depending on the current weather.
- During normal weather, fog, a sandstorm, or a shadowy aura, it is in Normal form and is a Normal type.
- During harsh sunlight, it is in Sunny Form and is a Fire type.
- During rain, it is in Rainy Form and is a Water type.
- During hail it is in Snowy Form and is an Ice type.
Biology
Castform is an artificial Pokémon that changes appearance and attitude based on the weather. Its body is made of cells exactly like those of water molecules, causing its cellular structure to be chemically altered by temperature and humidity. Though not of its free will, Castform uses this ability to protect its tiny body. In its Normal Form, it resembles a plain, gray cloud with a single wisp extending from the top of its head.
Under bright sunlight, it takes on its Sunny Form. Its lower half becomes pure white, while the head turns orange has develops small orange spheres around it. This gives it the overall appearance of the sun above a small cloud. Its skin glows and dries, and becomes hot to the touch.
When it is soaked in rain, it takes on its Rain Form. It has a dark gray lower half resembling a storm cloud. The head turns blue and resembles a raindrop. Its body is soft and slippery and seeps with water when compressed.
When it is hit by hail, it takes on its Snowy Form. Its head turns purplish-blue. The rest of the body changes into the shape of a mint green, cumulonimbus cloud. Its body becomes a smooth ice-like material, partially frozen measuring temperatures near 23 degrees Fahrenheit.
Regardless of the form it takes, it will always have a large, spherical head and a lighter colored mask-like marking over its eyes. Various experiments were conducted to change its form in artificial conditions, but all have failed. Aside from its various forms, Castform is able to utilize weather powers in the form of its formerly signature move, Weather Ball. Despite its man-made origins, it can be found in grassland areas.
In the anime
Main series

Major appearances
Castform debuted in Unfair Weather Friends, under the ownership of Bart. It changed into all of its forms during the episode.
In Currying Favor and Flavor!, an Ally Castform battled Ash alongside a Totem Lurantis during the Lush Jungle trial. It was defeated by a Tackle from Rowlet. Besides its Normal form, it also took on its Sunny Form.
In Mounting an Electrifying Charge!, a Castform used its weather-changing abilities to create rain and snow obstacles during the Charjabug race.
Minor appearances
A Castform appeared in the opening sequence of Destiny Deoxys.
In Clamperl of Wisdom, Spoink mistook a Castform for its lost pearl.
A Coordinator's Castform appeared in Mean With Envy.
In Saved by the Beldum, a Trainer's Castform attended the Ever Grande Conference.
In Spontaneous Combusken!, a Coordinator's Castform competed in the Performance Stage of the Chrysanthemum Contest while in its Sunny Form.
A Trainer's Castform appeared in Exhibition Unmasked!.
In From Z to Shining Z!, a Trainer's Castform watched the battle between Ash's Pikachu and Tapu Koko.
A Trainer's Sunny Form Castform appeared in Making Battles in the Sand!.
- A Sunny Form Castform in the anime
- A Rainy Form Castform in the anime
- A Snowy Form Castform in the anime
Pokédex entries
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Pokémon Generations

In The Scoop, a Castform was working at TV Mauville as a weather forecaster, an allusion to its weather-based abilities.
In the manga

Ruby & Sapphire chapter
- Main article: Fofo
Ruby's Castform, nicknamed Fofo, debuted in Lombre Larceny. Previously, she belonged to Mr. Stone, who was injured in an attack by Team Aqua. Fofo was then given to Gabby and Ty to be cared for while he was being healed. She later decided to travel with Ruby when he began traveling with the reporters because she was lonely. Until he was reunited with Rara, Fofo was Ruby's go to Smart Contest Pokémon.
Sun, Moon, Ultra Sun & Ultra Moon chapter
In Flash and Cosmog's Secret, two Ally Castform helped a Totem Lurantis fight Moon.
Gallery
- A Sunny Form Castform in Pokémon Adventures
- A Rainy Form Castform in Pokémon Adventures
- A Snowy Form Castform in Pokémon Adventures
Pokédex entries
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Pokémon Ruby-Sapphire

A Castform appeared in Descent Of The Weather God!!, where it showed its ability of transforming into many forms depending on the current weather.
- A Sunny Form Castform in Pokémon Ruby-Sapphire
- A Rainy Form Castform in Pokémon Ruby-Sapphire
- A Snowy Form Castform in Pokémon Ruby-Sapphire
Other appearances
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This section is incomplete. Please feel free to edit this section to add missing information and complete it. Reason: image |
Castform was featured as one of the Pokémon released from a Poké Ball in the demo of Super Smash Bros. Brawl that appeared at Jump Festa.
Game data
Pokédex entries
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Game locations
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In side games
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Held items
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Ruby | Sapphire | ![]() | |
Emerald | |||
Diamond | Pearl | ![]() | |
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Black 2 | White 2 | ![]() | |
Omega Ruby | Alpha Sapphire | ![]() | |
Sun | Moon | ![]() | |
Ultra Sun | Ultra Moon | ![]() |
Base stats
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HP: 70 |
130 - 177 | 250 - 344 | |
70 |
67 - 134 | 130 - 262 | |
70 |
67 - 134 | 130 - 262 | |
70 |
67 - 134 | 130 - 262 | |
70 |
67 - 134 | 130 - 262 | |
70 |
67 - 134 | 130 - 262 | |
Total: 420 |
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Pokéathlon stats
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Normal
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Sunny Form
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Rainy Form
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Snowy Form
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Learnset
Castform is available in Brilliant Diamond and Shining Pearl.
By leveling up
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By TM
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By breeding
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By tutoring
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Normal Form
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Sunny Form
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Rainy Form
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Snowy Form
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Forms
Sprites
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Trivia
- Castform's Weather Ball will always receive STAB in any of its forms unless in a sandstorm, under Shadow Sky, or if it loses Forecast.
- Castform is the only Pokémon to receive this benefit from Weather Ball.
- In Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness, Castform has a body size of 4, despite it being a body size 1 in the first Mystery Dungeon games and having the same in-game sprite in the second Mystery Dungeon games. This may have been changed to balance gameplay.
- Castform's weather-based transformations cannot be viewed in the forms section of the Pokémon Diamond, Pearl, and Platinum Pokédex, nor do they appear on the field in HeartGold and SoulSilver.
- All of Castform's forms will appear in the forms section of the HeartGold and SoulSilver Pokédex upon obtaining one, even if it never transformed.
- Castform is the lightest Normal-type Pokémon.
- Prior to Generation VIII, unlike most Pokémon with form differences, Castform's alternate forms had no Shiny variations of their own, so only the Normal form of a Shiny Castform would look different.
- Because Castform is not present in Pokémon Sword and Shield, these new shiny forms were first shown in Pokémon HOME. They were later included in the files of Pokémon GO, and Shiny Rainy Form Castform became available in game on March 24, 2021.[1]
- Before Generation VII, Castform's Normal form was classified by Pokédex color sorting as white.
- Castform is the only Normal-type Pokémon in the Amorphous Egg Group.
Origin
Castform resembles a living cloud and acts like weather in general, but it may also be based on a weather balloon. It is similar in both concept and design to a teru teru bōzu, a Japanese charm doll used to wish for good weather. Its forms and their types may have originated from the English saying "rain, hail, or shine". As Castform is said to be composed of molecules similar to water, its shape of a large sphere with two smaller orbs resembles an H2O molecule.
Name origin
Castform may be a combination of forecast (the prediction of weather) and transform or form (referring to its ability to change form depending on the weather). The German and French names reflect this.
Powalen may be a combination of ポワン powan (onomatopoeia of a sudden transformation, similar to "poof" in English) and 変わる kawaru (to change or transform).
In other languages
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Normal
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Sunny Form
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Rainy Form
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Snowy Form
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Related articles
External links
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This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon as a species. |