Pokemon Sacred Gold Storm Silver Documentation -

When patching your game using the Official GBAtemp Thread instructions:

In Pokémon Sacred Gold and Storm Silver, players must battle their way through the Johto region's eight Gym Leaders to earn the right to challenge the Pokémon League Champion. Each Gym Leader specializes in a specific type of Pokémon, and players must use their skills and strategy to defeat them. Pokemon Sacred Gold Storm Silver Documentation

He is located in Cianwood City and is essential for teaching your Pokémon high-level moves they may have missed due to the revamped level-up curves. When patching your game using the Official GBAtemp