Genesin League

The Torran League is the regional Pokémon League of the Torran region. It is composed of a preliminary entrance exam, eight Torran Gym Leaders, the Elite Four and the champion. Pokémon trainers who earn eight badges by defeating the Gym Leaders of the Torran League qualify to challenge the Elite Four and the Champion at Chateau Atlantis in Atlantic City.

Entrance exam
The Torran League is unique in that it requires trainers to pass a test before they can earn their first badge. The test is composed of five true or false questions followed by a battle. Trainers failing the question portion of the exam can earn entrance into the league by winning two battles.

Battle
For the battle portion of the exam, the player chooses one of the three provided starter Pokémon and must battle Professor Linden, who will use whichever starter has a type advantage. Then, if the player failed the question portion of the exam, they will have to battle Professor Hawthorne, who uses the other starter, however, this one is specially bred to have a more diverse movepool:

Badges
       
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Elite Four and Champion

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Trivia

 * Exactly half of the trainers in the Torran League are male, and half are female.
 * All members of the Elite Four have at least one shiny Pokémon, most of which were given as bribes by Team Nightfall.
 * Five of the Torran League trainers (namely Victoria, Vespa, Elmer, Devlin, and Viper) play large parts in the game's storyline beyond their status in the League.