Nikki is not initially present in her Club, one must defeat all of the other Club members to learn of her location. Once found, she will head back to the Club where she can be challenged as many times as the player wishes. Players who are able to beat Nikki will receive the Grass Medal and two booster packs.
Michael from the Fighting Club is initially found here. Once the player defeats him, he goes back to his club.
A Lass near the bookcase in the west room offers three trades with the player: first, she offers a Vileplume in exchange for an Oddish. Then, she offers a promotional Pikachu for a Clefairy. Then, she offers a Blastoise for a Charizard. Once she completes each trade, she only offers the next trade after player saves and resets the game.
At the beginning of the game, the player can come here to challenge Brittany, who upon defeat reveals that Club Master Nikki is hiding at Mr. Ishihara's House. The player can then go there to acquire the Give In! Anti-GR2 Deck. The other Grass Club members are near Brittany, and will give the player one pack apiece if spoken to.
If the player is female, GR2 will appear in the main hall of the club for battle after receiving the deck from Nikki. After GR2's defeat, both the Grass Club and the Science Club are freed simultaneously. Initially, only Brittany will battle when everyone returns to the main room. When the Water Club is liberated, Kristin will also agree to battle. Once the GR Coin is completed, Nikki finishes building a new deck and will battle if asked.