Koga was the Leader of Fuchsia City's Gym. He is a student of ninjutsu who specializes in Poison-type Pokémon. He handed out the Soul Badge to Trainers who defeated him. He was promoted to a Master Poison-type Trainer and became a member of the Johto Elite Four.
His team consists of:
|Tentacruel||Poison/Water||74||Poison-jab||Blizzard||Hydro pump||Dazzling Gleam|
|Toxicroak||Poison/Fighting||75||Poison-jab||Power-up punch||Mud slap||Unconfirmed|
|Gengar||Poison/Ghost||76||Giga drain||Hyper Beam||Thunderbolt||Shadow Ball|