From Bulbapedia, the community-driven Pokémon encyclopedia.
Kanto Leaders Tournament (Japanese: カントリーダーズ トーナメント Kanto Leaders Tournament) is a tournament held within the wider Pokémon World Tournament competition. Entry to this tournament is through the right-hand attendant.
In this tournament, players battle a variety of Gym Leaders from Kanto in Generation II games and Pokémon HeartGold and SoulSilver except Blue, as he is replaced with Giovanni. However, most of their signature Pokémon are based on Generation I games and Pokémon FireRed and LeafGreen. This tournament can be unlocked by defeating Unova Leaders Tournament.
Participants
The number of Pokémon each participant uses varies depending on the selected battle style.
Brock
Misty
Lt. Surge
Erika
Janine
Sabrina
Blaine
Giovanni