Rock-type Pokémon are one of the eighteen elemental types in the Pokémon universe. They are known for their high defense and resistance to many attacks, making them formidable in battles. Rock-type Pokémon often resemble geological formations or minerals, and they typically have a rugged appearance. In terms of strengths and weaknesses, Rock-type Pokémon are strong against Flying-type, Bug-type, and Fire-type Pokémon. However, they are vulnerable to Water-type, Grass-type, and Fighting-type moves. This balance of strengths and weaknesses plays a crucial role in strategic gameplay during battles.