Pegasus ' KaibaCorp takeover attempt Pegasus ' KaibaCorp takeover attempt was a failed attempt made by Maximillion Pegasus to take over the company KaibaCorp . He planned to achieve this through dealings with large shareholders of KaibaCorp , The Big Five , and their ruthless business techniques , while KaibaCorp had a low reputation and then rebuild its reputation with him in charge . Among his goals was to use KaibaCorp ' s Solid Vision technology to create a lifelike projection of his deceased lover , Cecelia . Events . Pegasus had established himself as a genius game designer when he created " Duel Monsters " , but his company , Industrial Illusions , alone was not enough to market the game at its full potential , so he teamed up with KaibaCorp to develop projections of the cards to make the game more lifelike . This was done with the Solid Vision , Seto Kaiba created . With intentions of taking over the company , Pegasus had spies work for KaibaCorp . Among them were Kemo and another guard . They were trusted with information confidential to the company , which they passed on to Pegasus . KaibaCorp had a good reputation due to its president , Seto Kaiba , being the number one gamer in Japan . However when Kaiba lost a Duel to Yugi Muto and his other self , Yami Yugi , their reputation dropped as investors lost confidence in them . In the manga , Kaiba was also left in a coma due to his Penalty Game . In the manga , while Kaiba was out of action , The Big Five possessed 60 % of KaibaCorp ' s shares and controlled its decision making . They made a deal with Pegasus , which would result in Pegasus becoming the chief executive . The deal was made under the condition that Pegasus would defeat Yugi in an official Duel in order to rebuild the company ' s reputation afterwards . Pegasus set up the Duelist Kingdom tournament as a means of facing Yugi in a Duel . He sent Yugi an invitation to the tournament and faced him in a Duel though a TV using a videotape . Pegasus won this Duel and for Yami Yugi ' s Penalty Game , he removed the soul of Yugi ' s grandfather , Solomon Muto , from his body . He forced Yugi to enter the tournament , as it was the only way of retrieving Solomon ' s soul . The Big Five broke into Kaiba Manor to try and steal important documents . However Mokuba Kaiba realized what they were doing and swallowed the key to the safe in front of them . Unable to immediately retrieve the key , The Big Five brought Mokuba to Pegasus Castle on Duelist Kingdom , where he was held prisoner until they could retrieve the key from him . Eventually , Seto awoke from his coma , and made it to Duelist Kingdom , where he confronted Pegasus . Seto lost the duel against Pegasus , and his soul trapped in the Soul Prison card . Mokuba also had his soul removed , and a 3D scan had been made on his body , thus retrieving the key ' s structure , allowing a copy to be made . During the finals of the tournament , Yugi and his dark counterpart managed to defeat Pegasus , thus turning the entire takeover attempt into a failure . In Yu - Gi - Oh ! R , after Pegasus died at the hands of Dark Bakura , his protege Yako Tenma attempted a second takeover of KaibaCorp to further his Project R . A . to revive Pegasus , but it also ended in failure .