Pokémon #383 in the National Pokédex, a Ground-type Legendary Pokémon.
Groudon is a massive, bipedal, dinosaur-like creature covered in red, segmented plates of thick skin that act as armor. It has a gray underside and large white spikes that run along the sides of its head, body, and tail.
Groudon possesses the ability to expand continents. In ancient times it came in conflict with Kyogre, a Pokémon with the ability to expand the oceans.
It can undergo Primal Reversion and become Primal Groudon if it holds the Red Orb. Primal Groudon gains the Fire-type in addition to its Ground-type.