Koyo Hibiki Husbando

Koyo Hibiki (響紅葉, Hibiki Kōyō) is the younger brother of Midori and a three-time Duel Monsters world champion. Koyo was a great Pro League Duelist who used "Elemental Heroes" and is the former owner of the "Elemental Hero" Deck used by Jaden in the series proper as well as the owner of "Winged Kuriboh." In his youth, Koyo was given the "Winged Kuriboh" card as a prize for winning a tournament by Maximillion J. Pegasus. Before the series proper, Koyo was able to rise to the position of World Champion. However after losing a Shadow Game to a mysterious Duelist, he found that every time he drew a card while Dueling seriously, the Deck of his heart would be depleted, at which point he would die. The Duel was erased from his memory. Koyo suffered from this and was sent to the hospital where he met a young Jaden who had broken his leg while playing baseball. He taught Jaden all he knew about Dueling and to always have fun Dueling no matter what.