KaibaCorp Kaiba Corporation ( コーポレイション , " Kaiba Kōporeishon " ) , usually shortened to " KaibaCorp " or abbreviated " KC , " is a corporate entity specializing in the entertainment and gaming industry ; more specifically , it is aimed at creating technologies centered around the " Duel Monsters " game . History . The company was previously controlled by Gozaburo Kaiba and later Seto Kaiba , who were both the majority stockholder of KaibaCorp . The corporate headquarters is located in Domino City ( briefly called " Battle City " when the KaibaCorp - sponsored tournament of the same name took place there ) . The company ' s most - prized product is the Duel Disk , a dueling system which gives the card - based " Duel Monsters " game a holographic interface . The corporation also owns and operates " Duel Academy " in " Yu - Gi - Oh ! GX " . KaibaCorp expanded into other areas of the gaming and entertainment industries with the creation of the amusement park Kaibaland . Two parks were built ; one in Domino City and the other in California in the United States . It was the culmination of the Kaiba brothers ' dream to create a park for orphaned and underprivileged children . KaibaCorp was originally a military arms dealer owned by Gozaburo Kaiba , until it was drastically reformed by Seto Kaiba after his hostile takeover . Seto ' s rise to power involved direct manipulation of The Big Five , Gozaburo Kaiba , and Mokuba Kaiba . Due to this , as well as KaibaCorp ' s past as a weapons company , Seto is often brought to blows with those who have a vendetta against either him or the company . These include the individual members of The Big Five , Gozaburo Kaiba , and his biological son , Noah Kaiba . Alister of the " Doma arc " also sought revenge for his little brother , who was killed in an attack by a military organisation with artillery funded by KaibaCorp . Later , this attack is revealed to have been ordered by Dartz , who was masquerading as Gozaburo Kaiba . These clashes have often been the foundation of several story arcs in the series including " Legendary Heroes " , " Waking the Dragons " , and " Virtual World " . The KaibaCorp building is seen numerous times in " Yu - Gi - Oh ! 5D ' s " , with a new design , from aerial views of New Domino City . In the opening , " Kizuna , " " Stardust Dragon " is shown flying up the side of the building . It is unknown who designed the new KaibaCorp and who controls the company as CEO in " 5D ' s " . KaibaCorp was responsible for turning Domino City into New Domino City , as well the creation of the Turbo Duels , a type of Duel which is only played by either using a " Duel Runner " or a " Duel Board . " The company is mentioned by Rex Goodwin , who informed Greiger that if he succeeded in revealing Yusei Fudo as a Signer , KaibaCorp would fund the revival of his village . During the English dub only , KaibaCorp is also mentioned by Blister to Yusei describing how he was offered a contract from KaibaCorp to go into Professional Dueling . The deal would have given him a chance to duel with Jack Atlas , Aster Phoenix , and Truesdale ( It is not stated if this meant Zane Truesdale or Syrus Truesdale ) . Relationships with other companies . Most notable of KaibaCorp ' s rivals is Schroeder Corp , headed by Zigfried von Schroeder . The Schroeder family had been rivals of the Kaiba Family even before Seto ' s takeover . They were also once a military dealer like KaibaCorp , but when the previous CEO went mad , Zigfried took power and changed the company to a games maker : as it would happen , this runs concurrently with Seto ' s rise to power , and the subsequent reforming of KaibaCorp to become a games company . Schroeder Corp and KaibaCorp both researched and developed holographic projection systems for Duel Monsters , but KaibaCorp ' s system was patented and marketed first . Zigfried was furious over the fact that Seto always seemed to be one step ahead of him , and until his defeat at the KC Grand Championship , was obsessed with ruining KaibaCorp . Another notable company is Industrial Illusions headed by Maximillion Pegasus . It is important to note that KaibaCorp ' s technology , especially the Duel Disk , ran seamlessly with the Duel Monsters game created by Pegasus , and both companies have previously worked closely together to make this possible . Seto Kaiba and Pegasus are in fact old associates who met when Pegasus was still an active participant in the dueling world , although his bids for the ownership of KaibaCorp have since driven a rift between them . Pegasus still ( somewhat mockingly ) regards Seto Kaiba as a friend , however . Paradius , run by Dartz , the main antagonist of season 4 , Waking the Dragons , is also a company worthy of mention . Paradius initially owned a small portion of KaibaCorp , but ended up buying it outright . Alister bought almost 50 % at first , but it ' s unknown if he used Paradius or Industrial Illusions to do so , as when he tried to buy KaibaCorp , he was posing as Pegasus . It ' s unknown what happened to Paradius as an organization after Dartz was defeated . In " Yu - Gi - Oh ! The Falsebound Kingdom " , the company SIC does similar work to that of KaibaCorp . It is run by Scott Irvine , a former KaibaCorp employee , who helped develop the Disk 2 ( He can also be seen in the anime ) . Allegedly a gaming technology company , its true goal was to control the Egyptian God Cards . Finally , in the " Yu - Gi - Oh ! R " manga , which takes place after Battle City and before the " Doma " arc , the Kaiba brothers are in the United States on business . KaibaCorp is attacked by Pegasus ' protege , Yako Tenma , who wants revenge on Yugi for defeating Pegasus . He captures Téa , and uses her as a vessel to try and use the Wicked Gods to bring Pegasus back , believing that Yugi had killed him . The Kaiba brothers eventually return , and with Yugi , Joey , and Seto Kaiba ' s combined efforts , Tenma and his servants are defeated .