Ryuji Otogi ( manga ) Ryuji Otogi ( " Otogi Ryūji " ) , known as Duke Devlin in the English dub of " Yu - Gi - Oh ! The Dark Side of Dimensions " , is a character in the " Yu - Gi - Oh ! " manga . This is the original depiction Duke Devlin . Ryuji was raised by his father , Mr . Clown , to get revenge on Sugoroku Mutou , who had defeated him in a Shadow Game . Ryuji invented games for the purpose of taking away everything important to Sugoroku ' s grandson , Yugi Mutou , and taking Yugi ' s place as holder of the Millennium Puzzle . However he was defeated by Yugi in one such game , " Dungeon Dice Monsters " , and through the experience found that he could not bring himself to hate Yugi . As Yugi ' s friend , Ryuji supported Yugi and Katsuya Jonouchi in the Battle City tournament and watched Yugi face Atem in the Ceremonial Battle . Biography . Upbringing . Ryuji ' s father , Mr . Clown had been an apprentice to Sugoroku Mutou . His father once faced Sugoroku in the Devil ' s Board Game for the ownership of the Millennium Puzzle , but lost the game , causing him to age fifty years in one night . His face became disfigured to the point , where he wore a mask to hide it . He claimed that Ryuji was born for the purpose of exacting his revenge . Since Ryuji was a child , he was told the story of his father ' s loss . Ryuji vowed to never forgive the Mutou family and designed numerous games , including " Dungeon Dice Monsters " , in order to battle Sugoroku ' s grandson , Yugi Mutou and taking away everything Yugi cared about . . As well as his father ' s revenge , he was motivated by his own desire to become the owner of the Millennium Puzzle . Ryuji ' s father established the Black Clown game shop in Domino City . Ryuji was transferred to Domino High School , where Yugi went to school . He hoped to defeat Yugi for revenge and to take his title of " King of Games " . The day before the Black Clown opening , Ryuji stood alongside his father , who was handing out balloons in promotion of the upcoming opening . Here , he saw Yugi for the first time and did not think much of him . He was skeptical that such a child was considered to be a super gamer . Revenge scheme . Bar bets . At school , Ryuji caught the attention of a crowd of girls with some dice tricks . He made a bet that he could stack six dice , by just shaking and turning over a cup he shuffled them in , suggesting they buy him lunch if it worked . He succeeded in neatly stacking the dice , all facing the same way , greatly impressing the girls . Katsuya Jonouchi became jealous of the attention Ryuji was receiving . Knowing Jonouchi was one of Yugi ' s friends , Ryuji took the opportunity to ruin Yugi ' s friendship . He listened to Jonouchi brag about his success in the Duelist Kingdom " Duel Monsters " tournament and pretended to be impressed . He proposed that they play a dice in cup game , which Jonouchi accepted , hoping to win over the girls who were impressed by him . Ryuji placed a die inside a cup and put the cup upside - down the table . He asked if he could move the die into his left hand without touching the cup and suggested they make it a bet ; if he could , Jonouchi would do as he says for a week and if could not , he would do as Jonouchi says . Jonouchi accepted , intending to win and embarrass Ryuji . Ryuji claimed that the die had now moved to his hand and told Jonouchi he could check if he did not believe him . When Jonouchi picked up the cup , Ryuji then swiped the die from underneath it . Yugi tried to argue that the game was unfair , but Ryuji explained that his actions were within the rules and Jonouchi ' s failure to see the game ' s blind spot , resulted in his loss . Jonouchi challenged Ryuji to another game , willing to do as Ryuji said for two weeks , if he lost . For this game , Ryuji shuffled four aces , laid them face down on the table and allowed Jonouchi to turn over two . If they were the same color , Jonouchi would win . Jonouchi mistook the game for having 50 : 50 odds and lost twice . With Jonouchi willing to obey his orders , Ryuji said that he would be his dog and was not to speak to anyone but him and expected him to bark when he did so . Yugi objected to this and when Jonouchi told him to stay out , Ryuji got annoyed at him for speaking without permission . He flung a die at Jonouchi ' s face , causing him to fall back . Dark Yugi was angered by Ryuji ' s treatment of Jonouchi , so he emerged and challenged Ryuji to a game . If he won , Ryuji would do one thing for him . If he lost , he would answer to Ryuji . Ryuji proposed that they play four aces again , but Dark Yugi had figured out that the game only had a one - in - three chance of success , so he insisted that they modify the rules . A joker was added to the face - down cards and they each took turns turning over one card . If a player turned over two aces of the same color they won . If a player turned over the joker they lost . This gave each player a 50 : 50 chance . Ryuji lost the first game and demanded a rematch , which he also lost . Ryuji asked if this was a shell game , but then realized that the only way to win was for the other player to turn over the joker and each player had an equal chance of doing that . Having won the right to demand one thing of Ryuji , Dark Yugi got him to release Jonouchi of his orders . Dark Yugi declared that Ryuji could not break their friendship with a game . Ryuji was impressed , but vowed to win their next game . " Dungeon Dice Monsters " . On the day of the Black Crown opening , Ryuji informed his father that the necessary preparations for his game with Yugi had been set up . He also told him that he had already faced Yugi in a game to see how good he was and thought he was amazing . His father asked if he lost and struck him when he hesitated to answer . He removed his mask to show Ryuji his face and remind him what Yugi ' s grandfather had done to him . He then apologized for scaring him and said he would not do it again and that Ryuji was all he had . Ryuji insisted it was okay ; he had taken on his father ' s sadness and anger and was now about to get revenge on Yugi and Sugoroku . While Yugi was browsing the Black Crown , Ryuji ' s father framed him for shoplifting . He was taken away by security , had the Millennium Puzzle confiscated and was put in a room with Ryuji . Ryuji informed him that they were to play " Dungeon Dice Monsters " and explained the basic rules to him . He handed Yugi a briefcase , filled with dice and instructed him to assemble a pool of twelve . Ryuji choose mostly red dice , containing Dragon monsters . Each player was given a Dungeon Master with three Life Points and each turn they were dealt three of the dice they had chosen . Without the Millennium Puzzle , Yugi had to play without Dark Yugi ' s aid . Yugi asked Ryuji to promise to return the Puzzle , if he won . Ryuji promised , but remained confident that there was no way Yugi could win . By rolling at least two Summon Crests per turn , Ryuji was able to dimension his dice , unfolding them into a path on the board and revealing the creatures inside . He quickly managed to Summon four creatures , before Yugi , who had chosen high - level dice , managed to Summon his first . His quick overpowering of Yugi , reassured him that without the Millennium Puzzle , Yugi was just a normal kid . Although Yugi ' s monsters were of a higher level , Ryuji ' s knowledge of the game allowed him to overpower Yugi at first . As Yugi started to doubt he had a chance , Ryuji explained that he knew Yugi fulfilled a prophecy , by completing the Millennium Puzzle , earning him the title " King of Games " , and that he had defeated numerous opponents using the Puzzle ' s power . He said that he had stolen the Puzzle in order to test Yugi ' s true power and demanded that he not be disappointed . When Yugi asked how Ryuji knew about the Millennium Puzzle , he told him of his father ' s loss to Sugoroku in the Devil ' s Board Game and said that he and Yugi were now fighting a battle which had been passed down through the generations . Yugi placed the die for " Iron Golem Gorogon " on the field , without dimensioning it and baited Ryuji ' s monsters into lining up , at the cost of a Life Point . He then played " Gorogon " , whose effect destroyed Ryuji ' s two monsters that were in line with it . Yugi stated that the Millennium Puzzle was like his second heart and he was not going to allow Ryuji to take it . Ryuji was impressed by Yugi ' s attitude and quick grasp of the delayed dimension advanced tactic . He withdrew his initial judgment of Yugi being a timid child and said that he was not surprised Yugi solved the Millennium Puzzle . Ryuji played " Flame Armor Dragon " , which Yugi defeated with " Duker of Twin Swords " . However this was a deliberate sacrifice to block Yugi ' s dice path , leaving with little room to dimension more dice . Ryuji dimensioned a rare black die , placing a " Warp Crest " on the field and hoped to play another one to easily teleport his monsters closer to Yugi ' s Dungeon Master . However Yugi also dimensioned a rare black die , completing the warp path and teleporting his " Black Ninja " to Ryuji ' s territory , where it defeated " Dark Eye Stalker " . Ryuji panicked now that Yugi was close to his Dungeon Master . He failed to dimension a monster to protect himself and Yugi took out one of his Life Points next turn . Ryuji admitted that Yugi now had him excited , but that he would not allow him to touch his Dungeon Master again . By rolling a triple crest , Ryuji Summoned " God Orgoth " at LV4 and used three Magic Crests to raise its ATK to 2000 . Yugi also used three Magic Crests to allow " Black Ninja " to dodge an attack from " Orgoth " . Ryuji thought it took quick judgment and good insight on Yugi ' s behalf to survive the attack and wondered if this was the cleverness that solved the Millennium Puzzle . Having dodged the attack , Yugi got " Black Ninja " to attack Ryuji ' s Dungeon Master again next turn , leaving him with one Life Point . Ryuji ' s father entered the room , annoyed that Ryuji was having trouble defeating Yugi and forbade Ryuji from losing . As his father argued with Yugi about returning the Puzzle , Ryuji asked him to stay out of the fight and not get in the way . His father was taken aback and said he was only doing it because he loved him . Intent on helping Ryuji , his father disassembled the Millennium Puzzle to break Yugi ' s will to fight . He laughed and said not to worry , his son would put it back together as the new successor of the legend . Disapproving of his father ' s actions , Ryuji apologized to Yugi , saying he knew the Millennium Puzzle was important to him , and helped him pick up the pieces . Nevertheless , he resumed the game and maintained that the winner would keep the Puzzle . Having dimensioned all but three of the dice , Ryuji was no longer able to summon anymore creatures . " God Orgoth " proceeded to slay all of Yugi ' s monsters , bar " Duker of Twin Swords " . As , Yugi began to wonder if he was really going to lose , Dark Bakura entered the room and asserted that Ryuji would be incapable of handling the Puzzle . He examined the board and despite Yugi ' s current disadvantageous position believed that Yugi , as the Puzzle ' s chosen host , would defeat Ryuji . Ryuji laughed , called Dark Bakura crazy and said that not even Yugi could turn this situation around . He was surprised that Bakura knew of the Millennium Items and asserted that he would be the next owner of the Millennium Puzzle . Dark Bakura replied that Ryuji ' s weak soul would be burnt to ashes before he could even wear the Millennium Puzzle , which he would not even be able to reassemble . Yugi spent all his Attack Crests to make " Duker of Twin Swords " stronger than " Orgoth " , but Ryuji blocked his attack with " Anagora " . " Orgoth " progressed , destroying " Duker " and attacking Yugi ' s Dungeon Master . Yugi thought there was no longer any way he could win the game . Believing , he had won , Ryuji thought that the Millennium Puzzle had now chosen him as its new master and began trying to reassemble it , but Dark Bakura remained confident that he could not do it and Yugi would win the game . Ryuji became frustrated as the pieces of the puzzle would not connect for him . Yugi dimensioned " Armor Wizard Pazoo " into a space on the board capable of fitting on oddly - unfolded dice . Ryuji attacked Yugi ' s Dungeon Master with " Orgoth " , but Yugi transformed " Pazoo " into it into a shield , which his Dungeon Master used to block the attack . He then transformed it into a sword , which was used to defeat " Orgoth " . With no monsters capable of beating Yugi ' s 2500 ATK Dungeon Master , Ryuji realized he had lost . Ryuji wondered how he lost his own game and if Yugi was the true successor of the Millennium Puzzle . Yugi explained that his victory was not due to his desire to have the power of the Millennium Puzzle and Ryuji asked what he was fighting for , in case . Yugi replied that it was his desire to see Dark Yugi again . True to his word , Ryuji allowed Yugi to take back the Millennium Puzzle . Dark Bakura remarked that Ryuji was fortunate to have escaped with his life , because he would have become trapped by a labyrinth of darkness , had he tried to solve the puzzle . Devil ' s Board Game . Despite losing to Yugi in " Dungeon Dice Monsters " , Ryuji said that he had no regrets . He apologized to his father for not getting revenge and said that he could not bring himself to hate Yugi . His father acted apologetic at first and the Millennium back around Yugi ' s neck , but then grabbed the chain and began to pull Yugi away . Ryuji pleaded with him to stop , saying revenge would not solve anything . However his father said that Ryuji was no longer his son and had lost the right to live , having failed to complete the task he was born for . He pleaded with his father to not show any more of his ugly heart , but he took it on himself to get his revenge and pulled Yugi into his secret room , locking the door . Ryuji knew that his father was about to play the Devil ' s Board Game with Yugi and told Bakura that they must stop him . The room soon caught fire and the door was kicked down when Katsuya Jonouchi and Hiroto Honda arrived . They instructed Ryuji to take his father to safety , while they stayed with Yugi , who needed to insisted on re - completing the Millennium Puzzle , which had been nailed to the room . Outside , Ryuji and his father watched the building burn , worried about Yugi , who was still inside . His father admitted he had been wrong when Ryuji asked if this was his revenge . Battle City . Preliminaries . Ryuji heard about Jonouchi ' s sister , Shizuka Kawai , who was recovering from an eye operation . He considered himself to be owing a favor to Yugi ' s friends , so bought flowers for her and accompanied Honda , who was collecting her from Yonezato Hospital . At the hospital , Honda told Shizuka that Jonouchi was participating in the Battle City tournament and fighting to give her courage . Ryuji interrupted and said he could understand how that could make Jonouchi stronger , but asked how it helped Shizuka . If she was to learn how to be braver , he asked if that was not something she had to do herself . Honda replied that sometimes people need to help each other out and can only get courage from other people . However Shizuka agreed with Ryuji and said that only she could make the choice for herself to be brave . Ryuji felt sympathetic as she explained her fears that she would still be unable to see after removing her bandages . He and Honda then escorted her to the train station to take her to see Jonouchi . Ryuji paid for the train ride . On the journey , he was surprised by the amount of food Honda as eating . When they arrived at Domino City , Honda suggested that they go to the pier , where he believed his friends were and asked if Ryuji had more money for a taxi fare , since he had spent his on his second lunch . With no money , they decided to go on a forty - minute walk and played roshambo for the privilege of giving Shizuka a piggyback . Ryuji picked paper , while Honda picked scissors . However while Honda was distracted by the sound of Mai Kujaku laughing , Ryuji changed his choice to rock . When Honda told Mai that they were taking Shizuka to see Jonouchi , she offered to drive them in her car . While he and Honda were tossed around in the back seat , due to Mai ' s reckless driving , Ryuji thought to himself that Mai was hot . Mai brought Ryuji , Honda and Shizuka to the pier , where they found Jonouchi had just recovered from being brainwashed by Marik Ishtar into Dueling Yugi . Jonouchi was ashamed of his actions and got annoyed at the others for bringing Shizuka . After Mai slapped Jonouchi for throwing away his pride so easily , Ryuji restrained Honda who also wanted to hit him . Battle Ship . To get to the Battle City finals , Ryuji , Yugi , Jonouchi , Anzu , Honda and Shizuka all squeezed into Mai ' s car , much to her dismay and arrived at Domino Stadium . Not being finalists , Ryuji , Anzu , Honda and Shizuka were told by Isono that they could not board board the Battle Ship blimp , where the quarterfinals were to take place , but Mokuba Kaiba convinced him to let them on . Each finalist was given a private room . Not having a room of their own , Ryuji , Anzu , Honda and Shizuka all crashed in Jonouchi ' s room to his annoyance . Ryuji watched Dark Yugi Duel and defeat Dark Bakura in the first quarterfinal . He then accompanied Yugi and his friends as they brought the injured Bakura to his bed . Ryuji was surprised by how intense the Duel was and Anzu explained to him that Bakura had been possessed by Dark Bakura during the Duel . He watched the second quarterfinal Duel between Jonouchi and Rishid , who was posing as Marik Ishtar . Rishid ' s attempt to wield a counterfeit " The Sun Dragon Ra " angered the real " Sun Dragon Ra " , who knocked both players unconscious . Ryuji and his friends tried running to their aid , but were stopped by Isono , who would not allow them to interfere with the unfinished Duel . While unconscious Jonouchi had a dream , where he was at school with Ryuji , Yugi , Anzu , Honda and Bakura , who helped him prepare for a " Duel Monsters " tournament . Their presence gave Jonouchi the support he needed to stand up , making him the winner of the Duel . Aware that Rishid was not Marik , Ryuji and his friends went to the medical room where he was taken . There Jonouchi told them about the dream and credited his ability to stand up in the Duel to having them waiting for him . Despite Mai telling her friends not to come , as she did not need their support , Ryuji and the others still attended her quarterfinal against Dark Marik . After the Duel , he and Honda brought Mai , who was left unconscious , to her bed . Ryuji and Honda stayed with Mai , during the last quarterfinal between Seto Kaiba and Ishizu Ishtar . He heard the story of the Ishtar family tragedy , when Ishizu visited Mai afterwards . Duel Tower . The Battle Ship landed on Alcatraz , where the last Duels of Battle City were to take place . Ryuji stayed behind on the blimp with Mai , while his friends left to support Yugi and Jonouchi . After Jonouchi was left unconscious from his semifinal with Dark Marik , Ryuji visited him in the medical room . He witnessed the battle of the gods from Dark Yugi and Kaiba ' s semifinal through the room window . Jonouchi awoke during that Duel and scolded his visitors for not being with Yugi at the time . Ryuji , Jonouchi , Anzu , Honda and Shizuka then went to the tower to watch Dark Yugi ' s Duel . Ryuji watched the final Duel between Dark Yugi and Dark Marik . He noticed the change in Marik ' s face , when the original Marik took back control of his body from Dark Marik , and ran over to congratulate Dark Yugi when he won . He and his friends returned to Mai ' s room , where they found that she and Bakura were both back to normal . After the destruction of Alcatraz , Ryuji flew back to Domino City with Yugi , Jonouchi , Anzu , Honda , Bakura , Shizuka , Ishizu , Marik and Rishid , on the Battle Ship . Ceremonial Battle . Ryuji traveled to Egypt with Yugi , Katsuya Jonouchi , Anzu , Honda , Bakura and Sugoroku for Atem ' s final task as pharaoh . With the airport in Luxor closed due to a sandstorm , they took a ship arranged by Ishizu to get to the Shrine of the Underworld . There , Ryuji watched the Ceremonial Battle and Atem ' s departure to the afterlife . The Dark Side of Dimensions . Ryuji worked at his father ' s cafe . Jonouchi also worked there as a dog mascot . ( In the English dub , when a girl commented on the big dog , Ryuji joked that he was trained . ) While serving Yugi , Anzu , Honda and Bakura , he noticed that Honda was fixing Jonouchi ' s Duel Disk and commented on what a futile task it was . ( In the English dub , he said that Honda had a lot of guts taking apart Jonouchi ' s Duel Disk like that . ) While Yugi read news about people mysteriously vanishing , Ryuji mentioned hearing news on the internet of fifty people disappearing all at once . Ryuji and his friends went to the airport to say to goodbye to Anzu as she left for the United States to study dance . Dice Pool . With the exception of his black dice , Ryuji used entirely Dragon s in his Dice Pool , when he played " Dungeon Dice Monsters " against Yugi .