Get ready for the Gym Challenge™ expansion!

Some Pokémon trainers are more devious than others—and these trickster trainers will meet their match with Pokémon gym leaders Blaine, Sabrina, Koga, and Giovanni! The four mischievous gym leaders have been perfecting their training methods with their favorite Pokémon. So check out their sneaky tricks...and put yourself up to the gym challenge!