Kyogre is a legendary Pokémon that debuted in Pokémon Ruby and Sapphire. It is the cover image used to identify the Sapphire version of the game. It is a huge, ancient, whale-like Pokémon with immense power. In the world of Pokémon, it represents the power of the ocean itself.
It is pursued by the villainous (in Sapphire) or good (in Ruby) Team Aqua, as they continue their pursuit of giving more water Pokémon homes.