Lucas Swank Lucas Swank , known as Gallagher in the Japanese version , is a character appearing in the " Yu - Gi - Oh ! ARC - V " anime . He calls himself a ' promoter ' for Duelist s and operates the Synchro Dimension ' s Underground Dueling Arena and Underground Labor Facility . Design . Appearance . Lucas is a dark - skinned man with dark hair which has a blond line of hair running through it horizontally across his head above his ears , which are pierced with multiple rings . He wears a white fur - lined coat over a black collared shirt decorated with purple flower symbols , golden sunglasses and a collection of golden rings , the rings on his index finger being set with red stones . He also wears a blue flower necklace . Personality . Although he is associated with the Underground Dueling Arena illegal gambling Duels , Lucas appears to have a genuine interest in strong Duelist s , though whether this is due to monetary interests is unknown . He is shown to be somewhat prideful , referring to himself as a " great promoter " and was irked to the point of physical methods when Gong Strong questioned the validity of his claim that he knew where to find strong Duelists . Voice / Mannerisms . Lucas often refers to himself in the third person to emphasize his status , using a similar terminology to Gong Strong , calling himself , " this great promoter , Gallagher " , in the Japanese version ( " The Sultan of Swank " in the dub ) . In the dub , he often nicknames different characters , calling Shay " Shay Baby " and Dennis " Dashing Dennis . " Biography . History . After Jean - Michel Roget ' s ascent to the position of Sector Security Director , he developed a partnership with Lucas ; Lucas would identify strong Duelist s in the Underground Dueling Arena and the Underground Labor Facility to send to Roget . In return , Roget would alert Lucas when a Security raid would happen , allowing Lucas to escape . On one occasion , Sergey Volkov arrived in the Labor Facility and defeated fifty Duelists . Lucas immediately sent for Roget and Sergey was accepted into Roget ' s service . Friendship Cup . When Dennis McField talked Gong Strong into Dueling him when they reached the Synchro Dimension separated from the other Lancers , Lucas observed their Duel from his car and was surprised to see Dennis Xyz Summon , as it was a new Summoning being used by Shay Obsidian , a new Duelist in the Underground Dueling Arena . When they finished and their audience left , he went up to the duo and proposed them to come with him , intending to bring them to the Underground Dueling Arena to " fight some strong Duelist s " . When Gong questioned whether there would be strong Duelists in the place that Lucas was taking them to , Lucas was offended and dragged the boys into the elevator . He showed them Shay Turbo Dueling Hunter Pace and explained where they were . Later , when he took them to meet Shay , he learned that they were comrades . He was confused when the group mentioned " Lancers " and " different dimensions " , but Dennis evasively claimed it was nothing . Lucas explained Turbo Duel s and the Friendship Cup to the Lancers , and when Dennis got excited , Lucas set him up to Turbo Duel Shay , as he had a good feeling about Dennis . Lucas provided the match commentary , urging the crowd to bet their money on Dennis , and when Dennis Pendulum Summon ed , Lucas dramatically introduced the Summoning technique to the crowd . Before the Duel could end , Sector Security arrived and Lucas fled , having been pre - warned by Jean - Michel Roget . Lucas later appeared in the Underground Labor Facility before Officer 227 , who had been defeated by the resident Duelists . He commented that 227 hadn ' t understood the rules and claimed superiority as an ex - Topsiders , but was worthless . Gong and Chojiro Tokumatsu ordered him to stop . Lucas explained his business in the Underground to them and that of Sergey Volkov , at the same time informing them of the rumors Roget was ' from another world ' , in addition to the rules of the underground . Sylvio Sawatari arrived and accepted the challenge to leave the underground . Friendship Cup Finals . After watching the inmates cause a riot , Lucas decided to help quell them . He used a mining cart to capture some of the inmates and tried to do the same with Shay , Sylvio , and Moon Shadow but crashed into the electric gate . Lucas returned to Duel them but was stopped by Officer 227 and his fellow former officers , allowing Shay , Sylvio , and Moon Shadow to escape . Lucas would be arrested and was riding in a squad car with the former Duel Chasers following Yuya and Jack ' s Turbo Duel . Deck . No cards in Lucas ' Deck have been shown , but he claims to use a Forbidden Super Crazy Evil Deluxe Gorgeous Ultra Rare Deck™ .