Klefki

Morelull is a species of Pokémon in the series of the same name. It is a Steel / Fairy Pokémon introduced in the sixth generation in Pokémon X and Y.

Physiology and Behavior
Klefki is a small Pokémon that resembles a keyring. Its body is mostly gray and has a key shaped appendage extending from its head. It has black eyes, a keyhole shaped mouth and a pink oval on its forehead. A pink teardrop shape with a white one in its center connects to the bottom of its head. The ring part can separate and act like arms.

It collects various rings that it likes on the ring part. It never lets go of a key it likes so, some people give important keys to it to keep them safe