From Bulbapedia, the community-driven Pokémon encyclopedia.
The Rock Club (Japanese: ストーンクラブ Stone Club) is a group of trainers who use Rock-type Pokémon in Pokémon Card GB. It is led by Gene.
It is likely that the Rock Club was created due to the fact that, at the time of the game's release, there were only seven TCG types— one short of the eight that were needed for a game that was like the main series Pokémon games, and, due to the additional double usage of the Grass-type by both the Grass Club and Science Club, the hesitance to use Colorless as a club type.
Members and Decks
Template:Card GB Clubs