Pierre the Gambler

Mitsuo/Pierre the Gambler (ミツオ Mitsuo) was Alexis' childhood classmate, who is a world famous gambler. He goes by the nickname "Boy" in the Japanese version, and has a French accent in the English version.

Dueling Cards
Pierre uses a Gamble-themed Deck:

Monster Cards

 * Gamble Angel Bunny
 * Sand Gambler

Spell Cards

 * Second Coin Toss

Trap Cards

 * Fairy Box