Klefki

Using Klefki in a Playthrough

Klefki is a single-stage Steel/Fairy Pokemon whose modest 57/80/91/80/87/75 stats are compensated by one of the best support typings and abilities in the series. Steel/Fairy grants immunities to Dragon and Poison, a very large set of resistances, and only Fire and Ground weaknesses. Prankster gives +1 priority to non-damaging moves, letting Klefki use Spikes, Thunder Wave, Reflect, Light Screen, Magnet Rise, Rain Dance, Sunny Day, Fairy Lock, and other support before faster opponents; from Generation VII onward, opposing Dark-types are immune to Prankster-boosted status moves that target them. The Hidden Ability Magician steals the target's held item after Klefki hits it while holding no item, but Prankster is overwhelmingly more useful for most support roles. Dazzling Gleam, Flash Cannon, Foul Play, and Play Rough give limited offensive presence, while Magnet Rise can temporarily remove its Ground weakness. Calm or Bold are generally best because Klefki's value comes from surviving long enough to support the team rather than maximizing damage.

Klefki in Competitive Pokémon

Klefki was one of Generation VI's most important support Pokemon. In XY UU, Prankster Spikes, Thunder Wave, dual screens, Toxic, Magnet Rise, and Fairy Lock combined with Steel/Fairy typing to let it check numerous Dragons and fast offensive threats while stacking hazards or crippling switch-ins. Its influence extended well beyond UU: Klefki was also a high-ranking XY Ubers support Pokemon and one of the metagame's notable Xerneas checks because it could resist Moonblast, use priority Thunder Wave, and lay Spikes against many otherwise dangerous teams. The notorious Swagger plus Prankster strategies of early Generation VI also contributed to Klefki's reputation, although later mechanics and rules changes reduced that style. Generation VII's Prankster nerf gave Dark-types immunity to targeted priority status moves, removing some of Klefki's universal disruption. Even after that change, Steel/Fairy typing and priority hazards or screens kept it viable across multiple lower and specialized formats.

Klefki in Nuzlockes

Klefki is very safe in Nuzlockes because Steel/Fairy gives two immunities, many resistances, and only Fire and Ground weaknesses. Priority Reflect and Light Screen can protect the entire team before an opponent moves, while Thunder Wave provides emergency speed control and Spikes can help wear down repeated boss switches in formats where the AI uses them. Magnet Rise is especially useful when a predictable Ground move would otherwise threaten Klefki, temporarily leaving Fire as its only ordinary weakness. Its offensive stats are mediocre, so it is better used to create safe situations for stronger teammates than to force knockouts itself. From Generation VII onward, Prankster status moves do not affect opposing Dark-types, an important mechanical exception when planning around priority Thunder Wave or similar support.

Klefki originally lived in mineral-rich mines, but as those resources became scarce it moved into human settlements and adapted to feeding on metal ions from keys and other metal objects. It collects keys obsessively, especially master keys, and can sneak into homes to steal them. A favored key may be kept for decades, which led nobles and other wealthy people to entrust important vault keys to carefully raised Klefki. The ring-like loop around its body is highly mobile, allowing Klefki to collect, rattle, rearrange, or even use its keys as part of threat displays and communication.