

Koga's battle style as an Elite Four member is designed to confound and destroy his opponent in battle. The team he uses in this role is similar to his Gym Leader's teams the main difference is the introduction of Pokémon not native to Kanto. In these games, he is the second member of the Elite Four to be faced. With the future of the Gym in his daughter's hands, Koga advances to a role in the Pokémon League of Kanto and Johto before the events of Generations II and IV. Defeating him will earn the successful Trainer the Soul Badge and the TM for Toxic, a move which, according to him, is a secret technique that has passed down his family for over 400 years. Koga awaits challengers in the center of the maze, clearly visible, but a group of Koga's students must be fought first.

He has built invisible walls in the Fuchsia City Gym, constructing a confusing maze out of them. In Generations I, III, and VII, Koga's Gym is typically the fifth Gym to be challenged. In addition to these roles, Koga also patrols the grounds of the Kanto Safari Zone, to ensure that the players of the Safari Game are safe from the wild Pokémon within. One of his students is his own daughter, Janine, who takes over his Gym in Generations II and IV storyline. Many students come to him to be trained in the arts of Ninjutsu and Pokémon. Koga has studied medicine and antidotes he makes his own potions to heal his Pokémon. Koga is a user of the Poison-type he likes the despair and horror that Poison-type Pokémon can inflict on others. In Pokémon Red, Blue, Yellow, FireRed, and LeafGreen and Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, he is the Leader of the Fuchsia Gym, but is promoted to be the second trainer of the Indigo Plateau Elite Four in Pokémon Gold, Silver, Crystal, HeartGold, and SoulSilver.

Koga, known as the Poisonous Ninja Master, serves two roles in the Pokémon games. 1.2.6 Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!.1.2.3 Pokémon Gold, Silver, and Crystal.He became a member of the Indigo Elite Four some time after the events of Generation I and its remakes, but before the events of Generation II and its remakes, thus leaving his daughter Janine in charge of the Fuchsia Gym. He handed out the Soul Badge to Trainers who defeated him. He is a student of ninjutsu who specializes in Poison-type Pokémon. Koga (Japanese: キョウ Kyō) was the Gym Leader of Fuchsia City's Gym. Red, Blue, Yellow, Gold, Silver, Crystal, FireRed, LeafGreen, HeartGold, SoulSilver, Let's Go, Pikachu!, Let's Go, Eevee!, Stadium, Stadium 2, Masters EX Art from Let's Go, Pikachu! and Let's Go, Eevee!
