Castform

Castform appeared in 2002 video game called Pokémon Ruby & Sapphire. Castform is a Weather Pokémon. When the weather changes, Castform's appearance changes with it. It's so sensitive to shifts in humidity and temperature that these changes alter the structure of its cells.

Castform is one of few human-made "artificial" Pokémon. It was created on purpose by the researchers of the Weather Institute in the Hoenn region as an experiment in weather forecast and manipulation. Castform's main color is a cloudy white. Around its eyes is white and in the shape of a mask. Castform is able to change forms according to the weather. It has a rain, sun and snow form. The rest of its body is a plain gray color.