Rhydon

Rhydon (Japanese: サイドン Saidon) is a /-type Pokémon.

Physiology
It is a rock hard Pokémon that developed a long tail and learned to stand biped-ally, meaning on two legs. It is a rhino-like creature that can crush rocks and has a long drill that can drill through rocks.

Special abilities
Rhydon can have the ability Rock Head or the ability Lightningrod. Rock Head prevents Rhydon from sustaining recoil damage. Lightningrod directs -type attacks to Rhydon. This Pokémon is disadvantaged when attacking, , , or other -type Pokémon. This Pokémon's brain developed after it stood up on its hind legs. Its drill horn bores tunnels through solid rock. Its hide is so thick and protective that Rhydon can thrive in very hot places.

Evolution
Rhydon is the evolved form of Rhyhorn. Rhydon evolves into the Generation IV Pokémon, Rhyperior, when traded while holding the Protector.

Trivia

 * Rhydon and its family members are the only Pokémon to have a / combination where it is switched around with the only Pokémon having Ground type as the first type and Rock as the secondary.
 * Rhydon was the very first Pokémon to be designed.
 * Rhydon shares the same species name as Nidoking and Nidoqueen, they're all known as "Drill Pokémon".
 * A glitch Pokémon called 94 will convert into Rhydon for the first time after being caught.

Origins
Rhydon appears to be based off a rhinoceros whilst its name is possibly a reference to rhinoceros, due to its origin.