Bill's grandfather

Bill's grandfather is a Pokémon Researcher and Inventor who first appeared in Pokémon Red and Blue. He lives in Fuchsia City of the Kanto region.

While appearing earlier, he doesn't have a helpful role for the player until Pokémon Gold and Silver, its remakes Pokémon HeartGold and SoulSilver, and Pokémon Crystal. In these versions, he houesits for Bill on Route 25. Here is where you'll be able to recieve certain stones after showing him specfic Pokémon.

Items
The following means:
 * G = Pokémon Gold
 * S = Pokémon Silver
 * C = Pokémon Crystal
 * HG = Pokémon HeartGold
 * SS = Pokémon SoulSilver