The Unova League is a Pokémon competition held in the Unova region, introduced in the fifth generation of the Pokémon series. Trainers from all over Unova compete to earn the title of Champion by battling in various tournaments. The league culminates in the Pokémon League, where trainers face off against the Elite Four and the Champion. To participate, trainers must first defeat all eight Gym Leaders in Unova to earn their badges. The Unova League features notable characters like Ash Ketchum and Cynthia, who are well-known trainers in the Pokémon universe.