Rhydon is a large, gray, bipedal Pokémon with characteristics similar to both dinosaurs and rhinos. It has narrow, red eyes and two teeth on its upper jaw.
At the tip of Rhydon’s nose there is a cream-colored horn, which is smaller in a female than in a male. There are several other spikes and protrusions on the head: a spike curving forward at the top, two triangular spots resembling ears on the sides, a wide, wavy crest under each ear, and spiny protrusions on each cheek.
It has a cream-colored abdomen, which is divided into strips by thin grooves. A rocky plate on the chest slightly covers the abdomen. It has a row of spines on its back and has a long tail with thin black stripes.
