Dr. Mason

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Reason: In the Virtual Console release, does Dr. Mason still mention Card Pop in the mail? (since Card Pop was disabled)

Dr. Mason
Dr.オーヤマ Dr. Ōyama
TCG1 Dr Mason.png
Dr. Mason artwork from Pokémon Trading Card Game
Gender Male
Hometown Unknown
Region Trading Card Game Islands
Generation I
Games Pokémon Trading Card Game;
Pokémon Card GB2: Here Comes Team GR!

Dr. Mason (Japanese: Dr.オーヤマ Dr. Ōyama) is a Pokémon card researcher. He resides in Mason Laboratory, where he teaches people how to play the Pokémon Trading Card Game and coaches practice duels. He was named and modeled after Pokémon Trading Card Game creator Kouichi Ooyama.

In the games

Pokémon Trading Card Game

In Pokémon Trading Card Game, Dr. Mason leads the player through a practice duel against Sam and afterwards gives the player a choice of three decks to start off with. They are the Charmander & Friends Deck, Squirtle & Friends Deck, and Bulbasaur & Friends Deck. He also gives the player 30 additional cards, which are decided by which deck the player picked.

Through the course of the game, Dr. Mason sends 15 Mails that can be accessed on the PC. 12 of which are about each of the Club Masters and later the Grand Masters, with advice to defeat them; and 3 of which contain more hints about other matters. All Mails come with one or more booster packs.

Pokémon Card GB2: Here Comes Team GR!

In Pokémon Card GB2: Here Comes Team GR!, he gives the player the Starter Deck as their first deck. In both games, he builds a Challenge Machine for card duels after the player finishes the game.


Main article: Dr. Mason/Quotes

In the manga

Pokémon Card GB The Comix

Dr. Mason appears in a supporting role in Pokémon Card GB The Comix, a one-shot manga based on the video game of the same name. In Pokémon Card GB The Comix, Dr. Mason provides advice and explains the rules of the Pokémon Trading Card Game to Mark as he duels Ronald.


Dr Mason GB2.png
Artwork from
Pokémon Card GB2: Here Comes Team GR!


TCG GB1 Mason sprite.png TCG GB2 Mason sprite.png TCG2 Mason.png TCG2 Mason Win.png TCG2 Mason Loss.png
Overworld sprite
Overworld sprite
Normal face sprite
Win face sprite
Lose face sprite


Language Name Origin
Japanese Dr.オーヤマ Dr. Ōyama
English, French, German, Italian Dr.Mason
Spanish Dr.Mayo

NPCs in the Trading Card Game Islands
Dr. MasonRonaldMr. IshiharaImakuni?SamAaronTap
Club MembersClub MastersGrand MastersTeam Great RocketDungeon MastersGhost Masters

Project CharacterDex logo.png This game character article is part of Project CharacterDex, a Bulbapedia project that aims to write comprehensive articles on each character found in the Pokémon games.