Talk:Klefki/@comment-32384008-20170817024129/@comment-33544753-20180608125133

Drapion and Alolan Muk is only weak to Ground

Sableye and Spiritomb is only weak to Fairy (Prior to Gen VII it had no weaknesses)

Marshtomp, Swampert, Barboach, Whiscash, Gastrodon, Quagsire, Palpitoad, and Seismitoad are weak to Grass

Rotom-Wash is only weak to Grass

Genesect, Scizor, Forrestress, Durant, Escavalier, and Wormadam (Trash Cloak) are only weak to Fire

Source: https://www.quora.com/What-are-some-Pokemon-with-only-one-weakness