Onix

Onix is one of types of Pokémon species. It's a very large rock type Pokémon that was once thought to be the longest of all Pokémon, though once new Pokémon were revealed in later games this was proven false. The species first appeared in the Geneartion I series of games which includes Pokémon Red and Blue and Pokémon Yellow. His large body consists of large boulders, and on their head they have a long horn.