Claude Claude , known as Nakajima in the Japanese version , is a character in the " Yu - Gi - Oh ! ARC - V " anime . He works for Declan Akaba at Leo Corporation . Design . Appearance . Cluade is a stocky , fair - skinned man with black hair that has four grey bangs at the front , and blue - lensed hexagonal glasses . He wears a grey business suit with a blue tie . Biography . Pre - Arc League Championship . Claude informed Declan of the Pendulum Summon ing reading that had been captured when Yuya Sakaki Dueled the Sledgehammer , and he later contacted Sylvio Sawatari to steal the cards , promising him the rare cards that he wanted in exchange . He oversaw Sylvio ' s theft of Yuya ' s " Magician " Pendulum Monster s , and was opposed to Sylvio Dueling with the cards , but Declan reassured him that it was all right . After Yuya defeated Sylvio , Claude began to order the retrieval of the cards , but Declan stepped in again and prevented him from doing so . When Henrietta Akaba returned to Paradise City , Claude filled her in on the situations concerning Pendulum Summoning and the attack on Sylvio . He later gave rare cards to Ootomo , Yamabe , and Kakimoto for backing their story . Claude received word of an attack on Professor Marco and informed Henrietta and Declan as the latter was Dueling Yuya . Claude brought them to the Leo Corporation observation room and explained that they had found Marco ' s Duel Disk and Deck . Claude informed Declan of Yuya ' s decision to Duel to qualify for the Arc League Championship , despite Declan having requested that Yuya be allowed to enter without doing so . After Declan ' s amused remark that he had done something unnecessary , he asked Claude if there had been any change in Yuya ' s Pendulum Summoning , and Claude replied that there hadn ' t . Claude later attempted to stop Furio Sawatari from barging into Declan ' s office , but was unsuccessful in doing so , and was ordered by Declan to have the cards that contained Marco and Herk analyzed . After a successful test of Declan ' s Pendulum Cards , Claude informed Declan that they were now one step closer to creating their own Pendulum Cards . Declan pointed out that the cards were still inferior in energy output to those that Yuya had used , and requested that they be made ready for the tournament . Claude oversaw the hunt for the Xyz using serial attacker , Shay , watching over Julia Krystal , Dipper O ' rion , and Kit Blade , expressing unease at relying on the LID students . He was appreciative when they managed to wipe Shay ' s hand and field , suggesting that they may have been as skilled as they claimed . Claude arrived at the scene after Shay defeated the three LID students along with other members of the LID top team . Shay told them to bring out their boss , and Declan arrived on cue . Claude later informed Declan of Yuya and Shay ' s successful entries into the Arc League Championship , in addition to the memory - modification of Julia , Dipper and Kit . Arc League Championship . Claude monitored the tournament alongside Declan and Riley Akaba . He confirmed the success of the Pendulum Cards that the Leo Corporation had developed to be tested by Sylvio , but he was shocked when Yuya Fusion Summon ed using monsters that he had Pendulum Summon ed , a technique dubbed by the computers as " Pendulum - Fusion " . Prior to Shay ' s Duel with Sora , he attempted to give Shay a Pendulum Card that Declan had developed for him , but Shay refused the card , much to Claude ' s irritation . As Claude grumped over Shay ' s refusal , Declan reassured him that it was fine ; as he was more interested in Shay ' s power rather than Pendulum Summoning at current . Claude was shocked when Declan chose Shay ' s homeland , " Neo Heartland City " as the Action Field , which Declan claimed to be a present from him to Shay to light his fighting spirit . As the Duel continued , Claude observed Shay ' s skilled use of Spell and Trap Card s , which Declan mused had been polished in combat when Shay was with the Resistance . He was quite shocked when Shay unveiled his ability to use Rank - Up Xyz Evolution , but pleased with his skills and he observed to Declan that Shay would be useful . Shay brutally defeated Sora , leaving him hospitalized . Claude updated Declan on his condition , and Declan ordered him to move Sora to a more secure location and bring him Sora ' s Duel Disk . Sora escaped during the night , and Claude intended to send out the top team to search for him . Declan reminded Claude that they were conducting a tournament , and he ordered Claude to use the city cameras to search for Sora . When the cameras picked up Sora in Central Park , Claude joined Declan , Riley and Shay to monitor him . He was surprised when Sora met up with Yuya Sakaki , but Shay informed the LID staff that " Yuya " was actually his comrade Yuto , the second Xyz user that Declan had predicted . Claude spoke out against Shay ' s intent to join the Duel , though it took Declan ' s input to stop Shay . Yuya arrived during the Duel , and he Summoned " Odd - Eyes Pendulum Dragon " to combat Yuto ' s " Dark Rebellion Xyz Dragon " ; upon its Summoning , the two dragons roared , and Claude observed that it was almost as if they were calling to one another . The dragons battled , and Claude wondered if Yuya was aiming for a DRAW ; Declan reminded him that as a Pendulum Monster , " Odd - Eyes " would be sent to the Extra Deck . Sora was sent back to Duel Academy after revealing his allegiance with them , and as Claude watched Yuya and Yuto converse , a bright light appeared and cut the camera fee . He attempted to get another view of the area , but the technicians were unable to find one close enough . They were able to piece together what was happening when they detected Synchro and Xyz Summoning ; Shay explaining that Yuto was Dueling a Fusion follower . Claude later retrieved an Xyz Dimension Duel Disk from Central Park and Declan ordered it to be brought to him . Shay tried to talk to Declan about Yuto ' s disappearance , but Claude refused to let him into Declan ' s lab . During Yuya ' s second round Duel with Iggy Arlo , he Pendulum - Xyz Summoned " Dark Rebellion Xyz Dragon " , prompting Shay to go after Yuya . When Shay didn ' t respond after Declan warned him not to , Claude offered to have Shay put under surveillance . After they learned that Dipper O ' rion had not shown up for his Duel , a technician informed them of a powerful Fusion Summon ing that they had detected , the user of which had defeated Dipper and sealed him into a card . They were able to get a shot of the girl ' s face , and Claude believed it to be Zuzu Boyle . They later detected the girl in Paradise Stadium while Zuzu was in the LID Center Court , and Claude deduced that the girl ' s target was likely Kev Ravenwood . Declan ordered Claude to seal the area while he went there personally , and Claude advised him that his opponent , Barrett , was from the Fusion Dimension . Claude and Declan monitored the events of the Battle Royal . Sora returned to the Standard Dimension with Obelisk Force , and a second squad appeared in the Volcano Area where Celina was located ; Claude updating Declan on the location . Their attention was soon stolen by Yuya ' s Duel with the first Obelisk Force squad , where Yuya was Dueling in a rage and emitting a dark aura , before defeating the squad . The technicians then detected a Synchro Summon in the Arctic Zone , and as Declan monitored the search for the Fusion follower , he asked Claude to update him on Yuya ; Claude explained that he had been moved to the Jungle Area , and he later explained that the Shadow brothers had moved Celina to the Arctic area . They both watched as the Obelisk Force defeated the Senior Duelists , but Kev was saved by the Fusion follower , who " opposed " Obelisk Force , causing them to realize that the Synchro Dimension were not their enemies . Claude was horrified that the Senior Team had been defeated , and desperately proposed sending in the Top Team , but Declan explained that it wouldn ' t work ; reminding Claude that he was forming the Lancers to combat Duelists from different dimensions . Sylvio arrived , demanding to know what was going on , and Claude tried to make him leave , but Declan proposed to allow Sylvio to participate in a revival match . They later watched Zuzu fleeing , Claude mistaking her for Celina and asking what the Shadow brothers were doing before being corrected by Declan . The Fusion follower showed up , and he vanished with Zuzu in a bright light . Friendship Cup . After Declan defeated Yuya in a Duel , Declan asked Claude if he had collected the data on the Duel , and Claude informed him that he had . Duel Academy . After the Supreme King Z - ARC appeared in the dimensional rifts created by the integration , Claude went to Henrietta ' s office , where they watched the Lancers Dueling Zarc . Following Zarc ' s defeat , Claude was rocking Riley , who had turned into a baby after sealing Zarc , and learned how the Standard Dimension was reborn into the " Pendulum Dimension " with everyone Pendulum Summon ing as usual now from Declan . He also watched the Battle Royal with Declan and Henrietta while continuing to rock Riley . When Yuya regained his memories of Zuzu , Claude learned from Declan that Riley expelled his own soul in order to seal Zarc ' s soul and was reborn as a baby without a smile due to the dimensional spilt . Cluade watched Yuya and Dennis ' Duel and Yuya ' s subsequent victory alongside Declan , Henrietta , and Yusho . He learned that Yuya refused to use the Four Dimension Dragons due to the fear of hurting Riley and tried to her smile without them . He to listened to Declan explain his reason for agreeing with Jack Atlas to Yuya and activated the Dimension Highway . While watching the Duel , he learned that Yuya is afraid of summoning the four dragons was because something might happen to Zuzu , Celina , Lulu , and Rin as well . After all four dragons were summoned , Claude learned from Yusho that the true fun was about to begin .