Nidoking (Japanese: ニドキング Nidoking) is a dual-type Poison/Ground Pokémon introduced in Generation I. It evolves from Nidorino when exposed to a Moon Stone. It is the final form of Nidoran♂. It is related to Nidoran♀ and, starting in Generation V, can produce Eggs that contain either Nidoran♂ or Nidoran♀ when bred with Ditto.