Roku

Rokujuro is a character in Yu-Gi-Oh! ZEXAL. He is an elderly man who is the owner of a Duel Lodge in the mountains around Heartland. During episode 16, he taught Yuma about Duel Monsters and how they are alive and, specially, about how they also feel fear in a scary situation. His teachings changed Yuma's dueling, making him protect his monsters more during his duels. At the end of episode 16, he gives Yuma Tsukumo the hidden Deck that Yamikawa was searching but is fine with it now.

During the same episode, he shows Yuma, Kotori and Tetsuo several statues of monsters that his pupils used, hinting that Yugi and Jaden, as well as other characters from previous series, once passed by his Duel Lodge.

Decks
Rokujuro uses a Statue Deck in Statue Duels. He has another Deck, which he uses against Yamikawa, but the Duel is not shown. Other than the cards he used, he has other "Statue" cards, some of which were used by Yuma and others of which are seen in the Duel Lodge.