Groudon is a Ground-type Legendary Pokémon. While it is not known to evolve into or from any other Pokémon, it can hold the Red Orb and devolve into Primal Groudon.
Groudon possesses the abilities to expand continents, create droughts and volcanic eruptions. In ancient times it came in conflict with Kyogre, a Pokémon with the ability to expand the oceans. In Pokémon Ruby, Emerald, and Omega Ruby, Groudon is sought after by Team Magma as a major part of their plot to create more land for land Pokemon by lowering a large part of the sea level.
Groudon is a member of the Weather Trio along with Rayquaza nd Kyogre.
Groudon can be seen in Mt. Igneus. Player must defeat Team Eclipse for stealing the Red Orb from Brimber City's gym and waking Groudon.
So far, Groudon cannot be captured.