Tate Tate , known as Tatsuya Yamashiro ( タツヤ " Yamashiro Tatsuya " ) in the Japanese version , is a character in the " Yu - Gi - Oh ! ARC - V " anime . After watching Yuya Sakaki Duel the Sledgehammer , Tate quickly became one of Yuya ' s biggest and steadfast supporters , calling him " Onii - chan " as a sign of affection and respect ( Japanese version only ) . Tate is enrolled in You Show Duel School and proved to be very knowledgeable . Design . Appearance . Tate is a fair skinned young boy with blue hair and shoes . He wears a white short sleeved shirt and brown vest , along with a watch and short khaki pants . Tate has purplish - gray eyes . Personality . Tate is cheerful and intelligent . He is loyal to his friends , no matter the situation ; when many potential students for You Show Duel School called Yuya a cheater for his exclusive Pendulum Summon ing , Tate still believed that Yuya won fairly . He hopes to be a Dueltainer when he grows up . Etymology . Tate is an English diminutive form of Tatsuya . Voice / Mannerisms . In the Japanese version , Tate calls Yuya " Onii - chan " , meaning " big brother " . Biography . Pre - Arc League Championship . Tate attended You Show Duel School with a study group a few times . On one such occasion , he watched Yuya Sakaki Dueling Gong Strong , and witnessed Yuya pulling a funny face after the ARC System shut down during the Duel . Later , he attended the match between Yuya and the Sledgehammer , which Yuya won by Pendulum Summon ing . Tate then went to You Show to enroll , but most of the prospective students left in a huff after Yuya revealed that he was the only person who could Pendulum Summon . Tate angrily denied that Yuya was a cheater , and his presence and Gong ' s encouragement managed to get Yuya to lighten up . Tate then enrolled into You Show . The day after Yuya finally mastered Pendulum Summoning , Tate , Allie and Frederick waited for him and Zuzu Boyle outside their school , asking Yuya to show them a Pendulum Summon . Yuya agreed , but they were interrupted by LID student Sylvio Sawatari , who suggested Yuya show them the Summmon at the LID Center Court . Once they were there , Sylvio stole Yuya ' s " Magician " Pendulum Monster s and challenged him to a Duel ; Sylvio ' s friend Ootomo took Tate , Allie and Frederick hostage . They were placed on the bridge of " Prison Tower of Darkville " , where they were put at risk when Yuya activated Action Traps . Duel Academy . When a massive dragon opened a dimensional rift , Tate stared at it in shock . He watched Gong Dueling through the rift , wondering what was the huge dragon . He was worried about Gong when " Supreme King Servant Dragon Clear Wing " destroyed all of his monsters . Tate wondered where Yuya was and noticed that " Supreme King Servant Dragon Odd - Eyes " was the same as " Odd - Eyes Pendulum Dragon " . He and Allie wondered if the Duelist had a connection to Yuya due to their similar appearances . He and the others were sent to the Fusion Dimension after the rift expanded and transported Paradise City there . When Skip noticed people in the air , Tate looked up and thought the Duelist was Yuya . While they watched Declan Duel Zarc , Tate and Allie were surprised he was appealing to Yuya and when Zarc claimed that he was the true founder of Pendulum Summon ing . He was surprised when he thought that " Zarc " had killed Declan and when Riley joined the Duel . When Riley used " En Flowers " , Tate and the others watched as flowers appeared around them . Following Zarc ' s defeat and the Standard Dimension being reborn into the " Pendulum Dimension " , Tate lost his memories of Zuzu and people from other dimensions . Yuya arrived late one day , wearing new boots that Frederick praised . Tate asked where Yuya bought them , but Yuya revealed that they were a gift , though he couldn ' t remember who had bought them for him . Yuya then Dueled Tate , Allie and Frederick , with Tate using his " Deskbot " Pendulum Monster s . The Duel was interrupted by Skip , who revealed that Yuya had been invited to the Junior Arc League Championship . Tate , Allie and Frederick watched the Battle Royal between Yuya , Sylvio , Gong , and Moon Shadow , who urged everybody to remember the Arc League Championship , and Tate began to recall the events . Relationships . Yuya Sakaki . Tate truly looks up to Yuya and doesn ' t doubt his Dueling or Pendulum skills even when others do as seen when Yuya loses to Zuzu . Tate sees Yuya almost like an older brother and after seeing him defeat The Sledgehammer , decides to enroll in You Show Duel School . Frederick and Allie . Tate is close friends with Frederick and Allie . They are rarely apart and are often seen supporting Yuya or Zuzu . Tate sometimes helps Frederick and Allie understand Dueling concepts , such as when he was teaching them about Flip Summoning during Yuya ' s match against Aura . Frederick and Allie are surprised at Tate ' s intelligence . Frederick once called Tate a human calculator . Deck . The only card initially shown in Tate ' s possession was " Performachine Gadget Giant " . After Zarc ' s defeat and the second dimensional split , Tate uses a " Deskbot " Deck , including Pendulum Monster s .