Rhydon (Japanese: サイドン Sidon) is a dual-type Ground/Rock Pokémon.
It evolves from Rhyhorn starting at level 42 and evolves into Rhyperior when traded holding a Protector.
Rhydon is a large, gray, bipedal Pokémon with features of both dinosaurs and rhinoceroses. It has a cream-colored, drill-like horn on its snout, the female having a smaller horn than the male. There are other protrusions on the head as well, including a spike curving forward from the middle of its head, two triangular, points resembling ears to the sides, a wide, wavy crest under the ears, and spiky ridges on its cheeks. It has red eyes and two fangs protruding from its upper jaw. It has a cream-colored stomach and a row of spikes down its back. Rhydon has a long tail with skinny, black stripes.
Rhydon is a physically powerful Pokémon. It is recorded as being able to topple buildings with a sweeping blow of its tail, and its horn is able to bore through solid rock and shatter diamonds. Rhydon is protected from heat and physical blows by its armor-like hide. It is stated to be capable of passing unscathed through streams of magma and withstanding a direct blow from a cannonball without being harmed. However, because of this tough hide, it is insensitive. Rhydon has a well-developed brain, but can also be forgetful. It lives in rough terrain.