Rhydon holds the distinction of being the first Pokémon ever created.
Rhydon is a large, gray, bipedal Pokémon with an amalgam of features from dinosaurs and rhinoceroses. Rhydon's most famous feature is the cream-colored, drill-like horn on its snout, although there are other protrusions on the head as well. These include the front-pointing crest extending from the middle of its head, two triangular, ear-like features to the sides of the crest, a wavy-shaped, also ear-like extension further down its head, and the spiky ridges on the sides of its mouth. It has a long tail with skinny, black stripes. Rhydon has a cream-colored stomach and a ridged back.
The female's drill-horn is smaller than the male's.
Rhydon's drill-horn is capable of crushing uncut diamonds, and Rhydon can knock down a building with one strike of its tail. Rhydon's rocky hide is strong enough to withstand direct cannonball fire, and serves as such effective protection that it makes Rhydon capable of living in molten lava. However, its rugged hide also makes it insensitive. Despite its typing, Rhydon can be taught Water-type moves such as Rain Dance, Whirlpool, and Aqua Tail, with some Rhydon capable of surfing in the water.
Rhydon are apparently much smarter than their pre-evolution, evidenced by their ability to stand on its hind-legs. Despite this, they are still very forgetful.
Rhydon are mainly found in cavernous areas, although its rugged hide also enables it to live in lava. One is likely to encounter a wild one in Kanto.
Rhydon are herbivores.
This Pokémon was unavailable prior to Generation I.