Trousselin

X / Omega Ruby: These key collectors threaten any attackers by fiercely jingling their keys at them.

Y / Alpha Sapphire: It never lets go of a key that it likes, so people give it the keys to vaults and safes as a way to prevent crime.

Sun: This even-tempered Pokémon has a habit of collecting keys. It will sneak into people’s homes to steal their keys.

Moon: It inserts its horn into chinks in metal, absorbing metal ions. For some reason, it collects keys.

Ultra Sun: Although it’s unclear why it collects keys, giving it a key makes Klefki very happy. However, it apparently only likes master keys.

Ultra Moon: Long ago it lived in mines, but once the minerals that make up its diet became scarcer, Klefki began appearing in human settlements.

Sword: This Pokémon is constantly collecting keys. Entrust a Klefki with important keys, and the Pokémon will protect them no matter what.

Shield: Klefki sucks in metal ions with the horn topping its head. It seems this Pokémon loves keys so much that its head needed to look like one, too.