Giovanni (Japanese: サカキ Sakaki) is the head of Team Rocket, who serves as the secretive Gym Leader of Viridian City's Gym, known officially as the Viridian Gym, in Generation I, Pokémon FireRed and LeafGreen, and Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!. He hands out the Earth Badge to Trainers who defeat him in battle. As a Gym Leader, he specializes in Ground-type Pokémon, but his master plan includes collecting rare Pokémon of all types. After he disbands Team Rocket and abandons his Gym, his role as the Viridian Gym Leader is taken over by Blue. In Pokémon Ultra Sun and Ultra Moon, he makes a return appearance as the leader of Team Rainbow Rocket. He is the only character in the games to have the Trainer classes BossFRLG/Rocket BossHGSS/Team Rocket BossPE (Japanese: ロケットだんボス Team Rocket Boss) and Team Rainbow Rocket (Japanese: Rロケットだん Team R Rocket).