Shay Obsidian
A duelist from the Xyz Dimension who works alongside Yuto to rescue his younger sister Lulu, Shay is a battle-hardened duelist who shows nothing but very serious and violent determination in his duel. Though his callous attitude can make him sometimes pragmatic, he deeply values his comrades and has a soft spot for children while remembering their cheers before their dimension was attacked by Duel Academy. Motivated to avenge his comrades and save Lulu from Leo, Shay went to Standard Dimension and attacked several LID members to lure out Declan, hoping to use him as bargaining chip against Leo. Upon learning the young man's relationship to his estranged father, Shay accepted Declan's offer of an alliance to fight their mutual enemy, entering the ARC League Championship to determine suitable Duelists will become Lancers. While joining the Lancers, unaware that Yuto was absorbed by his counterpart, Shay was distrustful of Yuya and the others until befriending Crow and then watching Yuya's Duel against Jack. Despite being injured protecting Saya during his duel against the Obelisk Force in Heartland, Shay went to the Fusion Dimension with Aster to save Lulu. However, he and Aster end up being among the wave of duelists to hinder Zarc while reaching Yuya and Yuto. After the dimensions once more separated, Shay left for the Fusion Dimension again to find his sister, only to learn the truth of her nature as Ray's incarnation from Leo and that she and Yuto has ceased to be. This causes an infuriated Shay to partially blaming Yuya for his actions as Zarc and accepted his challenge. Although losing the duel, he is given newfound hope that Lulu still exists from sensing Yuto's presence within Yuya. He is last seen watching the final duel between Yuya and Declan, and then got transported into the Pendulum Dimension where he is reunited with Lulu who is now residing inside Zuzu. Shay uses a Raidraptor deck and his ace monster is Raidraptor Revolution Falcon.