* Normal Form: Castform's default form, which has no special traits other than being Normal-type.
* Sunny Form: When the weather is sunny, Castform becomes Fire-type, gaining a red and yellow color scheme.
* Rainy Form: In the rain, Castform becomes Water-type, taking on a blue and white appearance.
* Snowy Form: In snow, Castform becomes Ice-type, becoming white and blue.
Castform's type changes affect its stats, weaknesses, and resistances. It's a versatile Pokémon that can adapt to different weather conditions in battle. However, it's considered a relatively weak Pokémon, making it more of a niche pick in competitive battling.
Despite its lack of high power, Castform remains a popular choice among fans for its unique design and weather-dependent abilities.