Blue Oak (オーキド・グリーン, Green Okido) is the rival of the player in the first generation games. After the incidents in the first generation Blue took over as the Gym Leader of the Viridian City Gym known officially as the Viridian Gym, as Giovanni had disbanded Team Rocket and gone into solo training. Blue does not specialize in a particular type of Pokémon and, like Giovanni before him, he gives the Earth Badge to Trainers who defeat him.