Gym Leaders are special trainers who need to be defeated in order for their respective badges to be obtained, and when all eight badges in a region are collected, they can be used to enter the Pokémon League. In order to become a Gym Leader, one has to fight a trainer chosen by the Pokémon Association.
Gym Leaders are highly respected in their respective home region, and usually others. During a crisis Gym leaders gather to dicuss the situation.
- Lt. Surge (Ex-Team Rocket Triad)
- Sabrina (Ex-Team Rocket Triad)
- Koga (Ex-Team Rocket Triad)
- Replaced by Janine
- Blaine (Ex-Team Rocket scientist)
- Giovanni (Leader of Team Rocket)
- Replaced by Blue
- Roxanne (Aqua)
- Brawly (Aqua)
- Wattson (Magma)
- Flannery (Magma)
- Norman (Neither)
- Winona (Magma)
- Tate (Unknown)
- Liza (Unknown)
- Wallace (Aqua)
The Sinnoh gym leaders are challenged by Platinum, for the experience.