We know from the extremely college students in this Heartland Academy one Reginald wasn’t simply a talented Duelist, and a bully.  The guy obtained the latest nickname «Shark», due to the fact that the guy put a water-inspired Patio and since the guy torn his opponents’ Decks from their give fast with malice. Despite Shark’s actions, Yuma Tsukumo defended him, when he believes that everyone has done some thing in their past that they feel dissapointed about. 
Shark defeated competitors in the their school, bringing its Porches when they destroyed. Shortly after conquering Bronk Brick, the guy satisfied Yuma Tsukumo, who made an effort to defend Bronk. When expected exactly what their most significant matter was, Yuma informed him it actually was his pendant. Shark ripped the latest pendent of their neck and you will threw they away. Shark confronted him to a fit, having both Yuma’s and you can Bronk’s Porches on the line. Yuma approved. 
They Dueled around square, having Shark easily gaining a bonus that have «Big Mouth area» and you may «Aqua Jet». The guy cornered Yuma, then again the newest «Numbers» were released from the door. Shark is actually possessed by the «Count 17: Leviathan Dragon», that he proceeded so you can Xyz Summon.  Since the Duel changed, Shark started to doll with Yuma, providing his Lives Things as a result of a tiny fraction. Yet not, Yuma been able to leave so it with the help of Astral, and you may managed to beat Shark together with «Matter 39: Utopia» at 5000 ATK, and this banged Shark aside. Whenever Shark awoke, he offered Yuma Bronk’s Platform, keeping their guarantee. Shark said that Yuma are unique of men and women that he have confronted in advance of and you can stepped regarding in place of other keyword (regarding the dub, Shark states «You have got a time till next, Yuma»). 
Sometime adopting the Duel, words off Shark’s overcome bequeath doing university and his awesome profile decrease. Sooner or later, he averted attending college and now have stop Dueling, and is actually used from the a group contributed of the Scorch and Chills, whom installed away on a left behind arcade. One-night, Shark is actually driving into the his motorcycle, and averted shortly after seeing Yuma, watching him prior to riding of.  Someday, if you’re Yuma try late to school, Shark drove across a course on the his bicycle and you can nearly struck Yuma. After Yuma is belittled of the their relatives whom believe that his victories over Shark and Flip was basically simply because off his «Numbers», the guy decided to find Shark and you may difficulties him to help you an excellent rematch, without using the help of Astral otherwise their Amounts. When Scorch and you can Chills almost harm Yuma and his family relations, however, Shark informed these to stop by claiming the guy knows her or him. Adopting the group assist Yuma go, the guy confronted Shark, the guy would not Duel because his early in the day losings to help you Yuma triggered your to stop Dueling. Yuma proceeded in order to chase Shark and irritate him by the asking for a Duel up to he approved, Yuma choice Emperor’s Key for the result. Yuma did not use his «Numbers» and you will Shark advised him to accomplish this, trusting a victory more than Yuma versus «Numbers» was meaningless. Yuma Summoned «Utopia», and therefore Shark poor having «Friller Shark». This help «Black Beam Lancer» negate their effects and you will damage they, hence impressed Astral. Shark claimed having a primary attack away from «Submersible Supplier Aeo Shark». Shark grabbed the brand new Emperor’s Secret, however, put they on the ground when he wandered regarding just after the guy remember what Yuma said throughout the becoming family unit members. In advance of operating aside, Shark told Yuma one Scorch and you may Chills brings your a location to fall in and told your not irritate your once again.