Klefki is a small, grayish-white Pokemon resembling a key ring with four keys on it. It has a spherical head with a white face and a small, pink oval on its forehead. Two black circles and a keyhole form its eyes and mouth. Below its head is its pink, teardrop-shaped body with a white marking in the middle. Extending from the top of its head is an appendage, which resembles an old-fashioned key with two wide, blunt teeth. A thin loop surrounds Klefki and connects at either side of the "key". Hanging from the loop are various keys that this Pokemon has collected. If Klefki finds a key it likes, it will never release it. To threaten attackers, this Pokemon jingles its key collection.