Where is the old man in pewter city's radio?

In Pokémon games, the old man in Pewter City's radio can typically be found in a house near the Pokémon Center. He is usually portrayed as someone who is unable to move due to age and provides tips or information about the game. In some versions, he may also mention his interest in Pokémon or share stories about the region. His role serves to enhance the game's lore and provide players with helpful hints.