Janine

"Fufufufu... I'm sorry to disappoint you... I'm only joking! I'm the real deal! Janine of Fuchsia Gym, that's me!"

- Janine, Pokémon Gold and Silver

Janine is Koga's daughter and is the Gym Leader who replaced him in Gold, Silver, Crystal and HeartGold and SoulSilver. She runs the Fuchsia City Gym, specializing in -type Pokémon just as Koga did in the Kanto based games. She will award the player the Soul Badge and TM84, TM06 in Gen. II, if you defeat her.

Pokémon Adventures Manga

 * Main Article" Janine (Adventures)

Black 2 and White 2

 * Poison-type Tournament


 * Kanto Gym Leader Tournament/World Leaders Tournament

Trivia

 * In Pokémon FireRed and LeafGreen, there is a little girl in the Fuchsia City Zoo who says her father is the town Gym Leader and that she is training as a poison-type user. This possibly could be Janine.
 * Janine is the only Gym Leader who never appeared in the anime.