Cleffa are very small pink creatures that are vaguely star-shaped in appearance, mostly pink in coloration. Their ears are completely brown. They have two small black eyes, a small mouth, and they appear to have a small permanent blush on its cheeks. They possess stubby digitless arms and legs, which come to a point. They have a curl on their forehead and a curled up tail.
Cleffa, like its evolutions, are known to benefit in some way by dancing in the moonlight. Cleffa can also gain nutrients by drinking dew water.
Cleffa have been known to be attracted by meteor showers. Sightings of this Pokémon always increases during meteor showers, and when they do show up, they dance the night away.
As with their evolved forms, Cleffa live in mountainous regions; especially on Mt. Moon.
This Pokémon was unavailable prior to Generation I.