Onix

Biology
Onix are made of giant rocks. Their body is so big that they can climb mountains in a very short time. They are also so hard that they can barely get harmed by natural accidents. The rocks that create their body are never smooth. As it was revealed in, they grow moss in their body which can be a food for Graveler and Golem.

Habitat
Onix have been found or encountered as a wild Pokémon in Mountain Pewter and in Kanto.

Minor Appearances

 * An Onix which Professor Oak took care of in his laboratory was mentioned by Redwald Walker in while he was younger. The giant Pokémon frightened Redwald and made him hide in a cabinet for a while.
 * A wild Onix appeared in, when Redwald and his friends were trying to solve a mystery at Mountain Pewter along with Brock. As it appeared, after the stream was blocked by some rocks in the mountain and stopped the moss growing, wild Graveler and Golem at the time fed Onix's moss in his rocks on his body. Brock treated him and left behind.
 * A herd of Onix were mentioned in, as the group of Pokémon, which attacked the Pokécenter in the area in order to make people stay away from the area, along with the herd of Fearow, Pidgeot, and Sandslash.