The Unova Pokémon League is a competitive tournament in the Unova region where Pokémon Trainers battle to prove their skills. It features several key components, including the Elite Four and the Champion, who are the top trainers in the league. Trainers must defeat gym leaders to earn badges before they can challenge the league. To enter the league, trainers must collect all eight gym badges from various cities in Unova. Once they have the badges, they can compete in the league's tournament format, aiming to defeat the Elite Four and ultimately challenge the Champion for the title of the strongest trainer in Unova.