Prof. Oak lives up the road from Ash's mother and the two often appear together as they are good friends. He currently lives with Tracey Sketchit, who became his loyal assistant in The Rivalry Revival. Tracey and Prof. Oak are very passionate about studying Pokémon and are both artists.
In the anime
In the anime, Oak is most notable for his often-forgetful attitude and other antics. His Japanese voice actor is 石塚運昇 Unshō Ishizuka, his English voice actors are Stan Hart (EP001-AG145), and Billy Beach (in The Mastermind of Mirage Pokémon and AG146-present) and his Brazilian-Portuguese dub voice actor is Wellington Lima. As Yukinari he is voiced by 戸田恵子 Keiko Toda, and as Sammy he is voiced by Tara Jayne in the English dub and by Rodrigo Andreatto in the Brazilian dub.
When Sammy was on his Pokémon Journey, he caught many Pokémon. However, these are the only ones that are known:
He also has these Pokémon to give to new trainers:
In the games
Professor Oak works in his Laboratory in Pallet Town with his Aides. He gave Red, Blue and Leaf their first Starter Pokémon. He is an idol to many trainers and researchers, including Professor Elm, and always plays an important supporting role in the many games that he appears in.
He is a childhood friend of Agatha. They were the good friends (some speculate that they were a couple) and Pokémon Trainers until Oak stopped battling and became interested in Pokémon research. Agatha said that he became soft and started to repute him as a fool.
Professor Oak was always well-known in Kanto but in Generation II he became more of a celebrity. He started to be famous in Johto because of his Radio Show with DJ Mary. Gold first met him visiting a house of Mr. Pokémon, another Oak's childhood friend. Later he unlocks the entrance to Mt. Silver, the place where only finest Pokémon Trainers may enter.
Professor Oak also was one of the two human characters appearing in Pokémon Snap. He was working on a Pokémon Report for the Pokémon species of Pokémon Island, and hired Todd to take pictures for the report. He provided Todd with the ZERO-ONE and its Dash Engine upgrade, Pokémon food, Pester Balls, and a Poké Flute. When Todd took a picture of each of the Pokémon Signs, Professor Oak drew a connection between them and the constellations to determine that Mew must be on Rainbow Cloud.
- Professor Oak GenII Sugimori.png
Oak from Generation II
- Professor Oak GenIII Sugimori.png
Oak from Generation III
In the Manga
When Professor Oak first appeared, Red had wandered into his lab and was immediately accused of being a thief. In his haste, Red accidentally released all the Pokémon in the lab, including Bulbasaur, causing the two to track them down and re-capture them. After being saved by Red from a Machoke attack in Viridian City, Oak gave Red the Bulbasaur and a Pokédex. Oak later appeared in Volume 3 of the RBG Saga and battled Blue under the alias "Doctor O" and revealed Blue's phobia of Flying-type Pokémon and her theft of Squirtle. However, he showed compassion by giving her the last Pokédex and forfeiting his position in the Pokémon League.
In the GSC Saga, Oak is now known as the leading authority on Pokémon in both Kanto and Johto and has developed the three new Pokédexes. The first was stolen by Silver, the second and third he gave to Gold and Crystal. During the battle with Mask Of Ice, he gave out the titles to the six Pokédex holders and Yellow. At the end, he employed Crystal as his assistant and thanks to her, the Pokédex had been filled and he owned all non-legendary Pokémon as research.
In the FRLG Saga, Oak was captured by the Beast Warrior Trio and lured Red, Green and Blue to the Sevii Islands; but not before he recalled their three Pokédexes. After he was freed at Trainer Tower, Oak upgraded the Pokédexes to add the National Dex.
One of Professor Oak's projects was a full analysis of a report holding all information on the last awakening of Jirachi. From this, he worked out that it would appear where the Battle Frontier was being built during its opening week. He immediately contacted Scott and, while he would not move the opening, Professor Oak managed to convince Scott to allow a Pokédex holder to guard Jirachi. This was Emerald. However, someone stole the disc with all the data from Professor Oak's lab.
He has these Pokémon hand (updated as to the current situation of the FRLG Saga).
- Spearow → Fearow
- Kangaskhan (ガルっち Garu-tchi)
- Stantler (オドっち Odo-tchi)
- Ledyba (レディっち Ledy-tchi)
- Chansey (ラキっち Luky-tchi): given to Daisy
- Bulbasaur: given to Red
- Charmander: given to Green
- Squirtle: stolen by Blue
In the TCG
He is also on the card Prof. Oak's Research, which lets the player shuffle their hand into their deck and draw five cards. This card appears in the Expedition set.
In addition, there is an imposter version which requires the opponent to shuffle their hand into his deck and draw seven cards, which also appears on a card called "Imposter Oak's revenge" in the Team Rocket set, a card which makes one's opponent do the same with only drawing four cards, but requires one of the player's own cards to be discarded.
|Japanese||オーキドユキナリ博士 Dr. Yukinari Ōkido||大木戸 Ōkido is a Japanese family name and placename.|
|English||Professor Samuel (Sammy) Oak||Oak tree, perhaps derived from Japanese Ōkido.|
|Brazilian||Professor Samuel (Sam) Carvalho||Carvalho means Oak in Portuguese.|
|French||Professor Chen||Chêne means Oak in French.|
|German||Professor Eich||Eiche means Oak in German.|
|Chinese||大木博士 Dr. Dái Mŭ||大木 is from 大木 Ōki|
Because his name was derived from a tree, the English-language translation of all of the main Pokémon games so far have named their regional professor after a tree as well.