| Professor Samuel Oak|
オーキド・ユキナリ博士 Dr. Yukinari Okido
|Eye color||Black*, blue*|
|Hair color||Gray*, brown*|
|Trainer class||Former Trainer, Pokémon Professor|
Professor Samuel Oak (Japanese: オーキド・ユキナリ博士 Dr. Yukinari Okido, Ōkido-Hakase and Orchid are also seen) is a Pokémon Professor who lives and works at his research lab in Pallet Town of the Kanto region. According to Professor Elm, Oak concentrates on Pokémon and human relationships as a profession.
Professor Oak works in his Laboratory in Pallet Town with his aides. He is an idol to many Trainers and researchers, including Professor Elm. He gives the player a Starter Pokémon as per his duty as Kanto's region's Pokémon Professor, either a Bulbasaur, a Charmander or a Squirtle; in the rare occasions that all three are out of stock, he may give the player an Eevee or a Pikachu.
He was a childhood friend of Agatha. They remained good friends and top-class Pokémon Trainers until Oak stopped battling and became interested in Pokémon research. Agatha said that he became soft and started to regard him as a fool. However, Oak still affiliates with the Pokémon League as an adviser.
Professor Oak was always well-known in Kanto but in Johto he became more of a celebrity, a "star Pokémon Researcher". He became famous because of his Radio Show with DJ Mary. He was going to turn down the show at first but Mary's energy and persistence wore him down.