Clefable is tall, pink Pokémon with a vaguely star-shaped body. It has long, pointed ears with dark brown tips and black, oval eyes with wrinkles on either side. A curled lock of fur hangs over its forehead, much like its large, upward-curling tail. It has dark pink, three-pointed wings on its back. Its hands have three fingers each, and its feet have two clawed toes and dark pink soles. It has a long, tightly curled tail.
Clefable is a timid creature that flees when it senses people approaching, and is one of the world's rarest Pokémon. Its sensitive ears can distinctly hear a pin drop from half a mile away. Because of its acute hearing, it prefers to live in quiet, mountainous areas of which they are protective. Using a bouncy gait, it is able to walk on water and sometimes appears to be flying using its small wings.