Character: Ookido Yukinari-hakase

He is a Pokémon researcher that was once a competitive Trainer, and is generally considered the best in his field. As such, his role in the Pokémon games and anime is that of a mentor to young Pokémon Trainers, a source of information and an occasional plot device. Amongst other things, he is credited with inventing the Pokédex. He also hands out a Bulbasaur, Squirtle, or Charmander to beginning trainers (depending on which Pokémon the trainer chooses) to start their adventure in the Kanto Region. Although he is an expert on all matters relating to Pokémon, Professor Oak specializes in Pokémon behavioural science. He appears in Pokémon 4Ever as a child who was pulled into the future by Celebi. Additionally, it is apparent after Pokémon 3: The Movie that he knew Delia Ketchum since she was a child; this most likely is the reason he occasionally exhibits parental-type concern (mainly in the form of scolding Ash as he is doing something that is dangerous). He also creates poems centred around Pokémon and is known as the rhyming professor by Dawn.