Gauche is a character appearing in the Yu-Gi-Oh! ZEXAL anime. He is Dr. Faker's left-hand man and a committee member responsible for maintaining the World Duel Carnival along with Droite. Ultimately, his and Droite's true task during this tournament is searching for "Number" cards.
Opposite to Droite's cold-blooded personality, Gauche is a very high-spirited person evident to how excited he got during the opening ceremonies of the World Duel Carnival.
He also seems to take his job less seriously as when investigating mysterious Duels within the tournament, he joked about how some of the Duelists were defeated whilst Droite maintained a calm manner whilst investigating.
This tends to cause frequent arguing with his partner, but they actually get along better than they initially appear and their dueling styles complement each other well. It also seems Gauche values Droite (or at least his co-workers in general) highly, as during their duel with Yuma he activated a card that served no other purpose than to take the hit for Droite. It otherwise didn't change the outcome of the duel at all.
Gauche seems to love Dueling, punishing heavily anyone that dishonors Dueling. As a member of the committee, he is very severe when punishing a cheater, to the point of physically injuring the participant or forbidding him/her of Dueling in the Heartland City for the rest of his/her life.#3 After his defeat, he formed a friendly rivalry with Yuma and Astral.