The Pokédex is an electronic device in the Pokémon series that serves as an encyclopedia for Pokémon species. It provides detailed information about each Pokémon, including their types, abilities, habitats, and evolutions. Trainers use the Pokédex to learn more about the creatures they encounter during their journeys. In the games and animated series, the Pokédex is often given to new trainers by a Pokémon Professor, such as Professor Oak. Completing the Pokédex by capturing and registering all Pokémon is a common goal for players, encouraging exploration and discovery within the Pokémon world.