- He is voiced by Tara Jayne (as a child in Pokemon 4Ever), Stan Hart (1998-2006), and Jimmy Zoppi (2006-present).
- Professor Oak made his first and only young appearance as Sammy Oak in Pooh's Adventures of Pokémon 4Ever.
- Professor Oak will make his first guest appearance in Pooh's Adventures of Ghostbusters II.
- Professor Oak will reunite Mr. Miyagi and meet his student Daniel LaRusso in Pooh's Adventures of The Karate Kid, Part II.
- Professor Oak will work with Randolph in the Littlefoot's Adventures of Free Willy trilogy.