Professor Oak

Pro. Samuel Oak, or Pro. Oak, is the leading Pokemon expert in Kanto region and gives the player a starter pokemon and a pokedex in the video games and gives Ash Ketchum and his grandson Gary Oak their first pokemon and pokedexes. He makes an appearence in the Pokemon Adventures manga to give Red's first pokemon and pokedex and he also gives out pokedexes and pokemon to his grandson Green (known as Blue outside of Japan) and Blue (known as Green outside Japan). He resides on the outskirts of Pallet Town and has a sizeable land for all the pokemon to roam.