Pokémon , is an ongoing Japanese animated series, which has since been adapted for the North and South American and European television market. It is somewhat based on the Pokémon video game series and a part of the Pokémon franchise.

Originally a single series, Pokémon, it has since been made into three series, including Pokémon: Advanced Generation and subsequently Pokémon Diamond and Pearl, which sequentially continue the story of Pokémon, while its spin-off Pokémon Sunday (formerly Weekly Pokémon Broadcasting Station) has broadcast a series of stories revolving around some of the recurring characters, Pokémon Chronicles or, as it is known in Japan, Pokémon Side Story.

Source: Wikipedia