From Bulbapedia, the community-driven Pokémon encyclopedia.
Murray (Japanese: ミウラ Miura) is the Club Master of the Psychic Club (Japanese: エスパークラブ Esper Club). He plays using the Strange Psyshock Deck (Japanese: アヤシイねんりきデッキ Suspicious Confusion Deck) and gives away the Psychic Medal to challengers who defeat him. In Pokémon Card GB 2, he uses the わたされたＧＲデッキ Handed Over GR Deck and later the ちょうエリートデッキ Super Elite Deck.
Murray is known for his arrogance and for not listening to other people.
In Pokémon Card GB
When the main character first meets him, he'll ignore the main character until main character has 4 master medals.
Defeat him for the Psychic Medal and two Laboratory booster packs.
Strange Psyshock Deck
In Pokémon Card GB2
Handed Over GR Deck
Super Elite Deck