| Klefki | |
|---|---|
| Pokémon character | |
 Klefki artwork by Ken Sugimori | |
| First game | Pokémon X and Y (2013) |
| Designed by | Mana Ibe |
| In-universe information | |
| Species | Pokémon |
| Type | Steel and Fairy |
Klefki (/ˈklɛfkiː/ ), known in Japan as Cleffy (Japanese: クレッフィ), is a Pokémon species in Nintendo and Game Freak's Pokémon franchise. It was designed by Pokémon graphic designer Mana Ibe and was inspired by old mansions and secret keys. Klefki was introduced in Pokémon X and Y and is a Steel and Fairy Pokémon known for collecting keys. A short film about Klefki called Pikachu, What's This Key For? premiered as an opener for Pokémon the Movie: Diancie and the Cocoon of Destruction.
Klefki received a mostly negative reception, though it gained the most attention among generation VI Pokémon prior to release. While multiple critics felt that it was poorly designed, other critics praised Klefki, defending it and other Pokémon based around inanimate objects. Critics also discussed how nostalgia impacts people's perception of Pokémon, citing Magnemite from Pokémon Red and Blue in comparison to Klefki. Klefki was also a popular Pokémon in the competitive scene of Pokémon X and Y.