Roku Roku , known as Rokujuro Misawa ( 三沢 六十郎 , " Misawa Rokujūrō " ) in the Japanese version , is a character in " Yu - Gi - Oh ! ZEXAL " . He is an elderly man who is the owner of a Duel Sanctuary in the mountains around Heartland City . Etymology . Roku ' s Japanese name given , Rokujuro , can be translated as a form of " sixty six " . His English dub name in it ' s shortened form simply translates into " six " . The meaning behind either name remains unclear at this point . Biography . Yu - Gi - Oh ! ZEXAL . During Yuma ' s stay at his Duel Sanctuary , he taught Yuma about " Duel Monsters " - how they were alive and , specifically , about how they put their life on the line for their Duelist . His teachings influenced Yuma ' s Dueling , making him protect his monsters more during his Duels , and treating them as his comrades . After watching Yuma ' s Duel with Kaze , he gave Yuma the Deck that Kaze was searching for . When Roku returned to visit Yuma during the World Duel Carnival , he was angry of the decision Yuma was making to quit the WDC and challenged him to a Duel . Once he defeated Yuma , he told him he tried to use his father as an excuse and that he shouldn ' t run away from his problems , and was happy when Yuma agreed . Later , Roku told Yuma that he was also aware that Mr . Heartland was using the WDC as a cover and is being used by Dr . Faker . The next morning , Roku left the Tsukumo ' s house , but Haru mentioned he was reassured that Yuma would be okay . Yu - Gi - Oh ! ZEXAL II . Mythyrian Numbers War . When Haru Tsukumo sent Yuma back to the Duel Sanctuary , Kaze explained to him that Roku was away right now , but left two cards that for Yuma to have - " Overlay Chain " and " Overlay Barrage " . After Kiraku Souhachi ' s statue was discovered , Roku appeared on TV to explain the legend of the warrior and present other artifacts . Barian Emperor Onslaught . After the Barian s began to invade Earth , Roku and Kaze became aware of the crisis in Heartland City and went to aid Yuma . When Yuma was rendered unable to Duel , Roku and Kaze attacked the Seven Barian Emperors with smoke bombs , allowing Yuma and his group to escape . When Girag attempted to give chase , they blocked his path and challenged him to a Duel , Roku claiming that Girag wouldn ' t get to Yuma without going through them . They made some headway against him at first , with Roku using " Black Luster Soldier " . Eventually , Girag initiated a Chaos Draw alongside the other Emperors as Roku and Kaze looked on in shock . This allowed Girag to use " Rank - Up - Magic - The Seventh One " to bring out " " . Roku agreed with Kaze ' s sentiment that the " blades of their hearts " would not shatter even if their bodies did . " Giant Hand Red " defeated them both and Roku apologized that he wouldn ' t be able to watch his disciple Yuma grow up as his soul was sent to the Barian World . After Nash was defeated by Yuma , Roku was revived as the fusion between Earth and Barian World was stopped and the Barian Pipe released all the souls it contained . Roku reappeared at the same spot where he and Kaze were defeated by Girag and smiled towards the sky , knowing that Yuma saved them . Decks . Statue . In Statue Duel s , Roku uses a Wooden Training Deck consisting of " Statue " monsters and other wooden cards . 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 Sanctuary . Three Musketeers of Face Cards . Roku plays a Three Musketeers of Face Cards Deck in typical Duels .