Synchronize ( ability ) Synchronize is the term used to refer to the state of mind that Yuya and his dimensional counterparts occasionally enter . Effects . This ability causes the counterparts to sync with each other , causing all parties involved to adopt some mannerisms of each other , including speaking and moving in the same manner . The consciousness of the ones affected are transferred into the counterpart that is dueling for the duration of the duel and gradually , the users lose the ability to distinguish their identities from each other and begin to act as the same person . When they regain their senses , the people involved generally do not know that they have synchronized . However , they retain their memories of the Duel , as Yuya remembers what happened in the Duel between Yugo and Celina , which he could not have in any other way due to his solitary confinement at the time . The phenomenon seems to be triggered by " Clear Wing Synchro Dragon " , regardless of if it is summoned or not . In the case of the former , the card of another Four Dimension Dragon will begin to glow . In the case of the latter , Clear Wing Synchro Dragon ' s card will begin to glow . Noticing the glowing causes the ability to activate and the counterpart observing it to become synced . If Awakened is active , then Yuya and all of his counterparts will sync regardless . The process is accelerated if all of the Four Dimension Dragons are on the field at the same time . History . Friendship Cup . The first instance of Synchronization happened between Yuya and Yugo during the Friendship Cup , and was triggered when Yuya picked up his " Odd - Eyes Pendulum Dragon " card after " Clear Wing Synchro Dragon " was Summoned . Both Yuya and Yugo exhibited certain traits of the other user during the phenomenon . Zuzu Boyle was able to notice this change in behavior on Yugo ' s end in the Duel . Friendship Cup Finals . Later , Yugo ' s Summoning of " Clear Wing Synchro Dragon " in his Duel with Celina once again caused Yuya to sync with him , transferring his awareness into Yugo ' s body . The sync was broken with the conclusion of the Duel , with Yuya remembering the Duel and as a result becoming aware of the ability . When the chip Roger planted inside Yuya ' s helmet activated during Yuya ' s duel with Crow Hogan , Yuto , Yugo , and Yuri synchronized with Yuya ' s and the four of them Awakened in sync . " Clear Wing Synchro Dragon " wasn ' t summoned this time , but it started to glow after Yugo and Yuri felt pain in their chests . While in sync with Yuya , Yugo and Yuri gained dark auras around themselves . When Yuya won the Duel , the sync broke with him and his counterparts passing out with the chip destroyed in the process . When Yuri , the Obelisk Force , and Yugo arrived at Yuya ' s location during his Duel with Barrett , Yugo and Yuri summoned " Clear Wing Synchro Dragon " and " Starving Venom Fusion Dragon " respectively . With Yuya controlling " Odd - Eyes Pendulum Dragon " and " Dark Rebellion Xyz Dragon " in his Duel , all of the Four Dimension Dragons were in play at the same time , causing Yuya and his counterparts to Awaken and synchronize again . After entering both states , Yuya , Yuto , Yugo , and Yuri start shouting that they waited for this time to become one and for a revival . But , before the distortion caused by their dragons finish Zuzu arrives and her bracelet teleports Yugo and Yuri away while Yuto ' s consciousness sank away . Duel Academy . When Yugo and Yuri summoned " Clear Wing " and " Starving Venom " respectively , they , Yuya , and Yuto entered a synchronized awakening again and start shouting to become one . When Yuya brought out " Odd - Eyes " and " Dark Rebellion " during his Duel against Leo Akaba , the Four Dimension Dragons resonated with them while Yugo and Yuri shouting to become one . When Yuri absorbed Yugo , Yuya resonated with him while shouting to become one . When Yuya and Yuri Summoned the Four Dimension Dragons each turn respectively , the dragons resonated with them causing them pain . The Four Dimension Dragons also caused Yuri , Yugo , and Yuto to enter a synchronized awakening and shouting to become one while Yuya screamed in pain from the resonation . While synced , Yuri tried to get Yuya to surrender while shouting to become one with Yuto and Yugo . They almost caused Yuya to give in until Declan reminded him of his father , which made him resist their temptation . The sync also broke when Yuto and Yugo helped Yuya after he took control of their dragons from Yuri .