Rhyperior

Rhyperior (ドサイドン Dosidon) is a /-type Pokémon, and is the evolved form of Rhydon. A Rhydon can only evolve into a Rhyperior by trade while holding the Protector item.

Appearance
Rhyperior is a large, gray and orange Pokemon. Everything about it is bulky, as it has thick armor, wide arms and legs, and a mace-like tail that it uses in battle to crush foes. When it evolves from Rhydon, it gains holes in it's hands, which it uses to shoot out rocks to hurt opponents. It may shoot out Geodude by accident.

Trivia

 * It has a Signature Move, Rock Wrecker. It is the only Pokemon in Gen IV to learn this.
 * It is one of the Pokemon to have "perior" in its name, the other being Serperior