The merchant or card shop manager is an unnamed clerk who owns the RPG Hobby Trading Cards shop.
The merchant's shop stocked the new Duel Disks that were used in the Battle City tournament. He also worked for the Rare Hunters, informing them when someone who owned a rare card registered for the tournament. The merchant altered Joey Wheeler's ranking in order to allow them to have access to his "Red-Eyes Black Dragon" and claimed it was a technical error. After Joey left with his friends, the merchant called up Marik Ishtar to have him send over the Rare Hunters to target Joey's Red Eyes B. Dragon. This caused Marik to dispatch Seeker and two Rare Hunters to Domino City.
- Yu-Gi-Oh! episode 55: "Stalked by the Rare Hunters"