Diabound Diabound was Thief King Bakura ' s " ka " , created by the spirits of the slaughtered town of Kul Elna desiring revenge . It had the power to absorb the abilities of other " ka " it defeated , and its form evolved as its powers grew . Priest Seto was unable to seal it in the original stone tablet because it was originally sealed beneath the chamber in the village . How Diabound came to be sealed in stone is unknown . However , if the existing Diabound is destroyed , the tablet itself that has the image of this monster is destroyed along with it . Biography . Creation . After the Kul Elna massacre , Diabound was created by the rage of the village ' s slaughtered victims . It is unknown how it was sealed in stone and how Bakura first came into contact with this monster . Ancient Egypt . Diabound is first Summoned when Bakura entered Pharaoh Atem ' s palace in his first attempt to take the Millennium Items . Everyone present is shocked by the strength of Bakura ' s hatred and that Diabound is actually a holy spirit , which Bakura claims is due to his loyalty to his cause . Priest Seto ignores the spirit ' s strength and attempts to seal Diabound in a stone tablet with his Millennium Rod , but Diabound breaks free with ease . Unfazed , Seto instead Summons " Galestgoras " to Duel Diabound . Galestgoras battles well , but Bakura uses the special power of Diabound to shatter the tablet that Summoned Galestgoras . He then has Diabound engage in battle with the other " ka " Summoned by the Priests and easily overpowers them . Atem , after reclaiming his father ' s mummy from Bakura , Summons one of the three Nameless Gods , " Obelisk the Tormenter " and soon Bakura finds himself on the receiving end of an easy overpowering . Despite his loss , Diabound is able to survive and Bakura escapes . Bakura later Summons Diabound when Priest Mahad , bearer of the Millennium Ring , leads him into Aknamkanon ' s tomb to Duel . Despite Diabound having evolved into a new form due to Bakura ' s hatred becoming stronger , inside the tomb , Mahad ' s " Illusion Magician " is able to fight at its full power and the two battle evenly . The Priest fuses his " ba " with Illusion Magician into the " Dark Magician " and attempts to destroy Diabound for good . Bakura survives again , and infiltrating the Shrine of Wedju to attack Aknadin , he has Diabound , whose form has evolved yet again with the acquisition of the Millennium Ring , use its phasing power to destroy the stone tablets before Aknadin can Summon them . When he flees from the Shrine , he Summons Diabound as the Pharaoh pursues him with " Slifer the Sky Dragon " , another of the Nameless Gods . Despite its power - up , Slifer retains the advantage , until Bakura begins attacking the townspeople , forcing Slifer to defend them , not only taking the attacks but also restricting its movement . Diabound hides with its power and nearly kills Atem , but the Priests intervene and rescue him . Diabound defeats Slifer when Aknadin , now fully evil thanks to Bakura ' s and Aknadin ' s previous encounter , stabs the stone tablet , which paralyzes " Slifer " , giving Diabound a chance to destroy it , but is saved when Bakura has Illushu intercept the attack of Duos . Bakura takes the Millennium Pendant from Atem and leaves him for dead after throwing him from a cliff . Atem survives , coming to Kul Elna to reclaim the Pendant and defeat Bakura . Bakura Summons the again - evolved Diabound , and the Pharaoh is defended by Mahad in the form of Dark Magician . With Diabound handicapped protecting the Millennium Stone , the battle proves to be largely even , but Diabound resists repeated attempts to slay it and phases into the walls . Shada ' s attempts to find it prove unsuccessful until Atem has Mahad open up holes in the ceiling to let light into the chamber and reveal Diabound . Diabound is able to survive when Bakura has the spirits of Kul Elna form a protective shield around it . The Priests arrive to save Atem after Shada is injured . They Summon their " ka " , but Diabound once again overpowers them until Karim has the idea to use the Millennium Scale to combine the " ba " of two " ka " , Duos and Curse of Dragon , into Duos Dragon . The fused ka proves to be an equal to Diabound when enhanced by Mahad ' s magic , but is unable to break through the shield . Bakura seizes his chance to injure Karim and take the Millennium Scale , separating Duos Dragon . Pharaoh Aknamkanon ' s spirit then appears , and repels all the spirits , weakening Diabound . Mahad then destroyed him with a powerful spell . With Diabound ' s destruction , Bakura slowly dies as well . Millennium World . When Yami Yugi enters the world of his memories to relive the events of his death , he replays his battles with Bakura and Diabound . In a departure from the original events of history , Yugi Muto reunites with Yami Yugi and replenishes his energy after the destruction of Slifer , allowing the Pharaoh to Summon " The Winged Dragon of Ra " and destroy Diabound with its Egyptian God Phoenix form . However , Yami Bakura ( on the RPG table ) reverses time , undoing the death of Bakura and Diabound . When Diabound is destroyed during the battle at Kul Elna , Yami Bakura resurrects Bakura and Diabound , and they later sacrificed themselves to summon Zorc Necrophades . When Zorc Necrophades is destroyed , Diabound is destroyed as well . Appearance . Diabound has a half - human body with muscular features along with three horns on the back of its head and the second on the front with different angles . It has a tail with the head of a snake at the end of it , as well as four feathered wings – two on his back and two on his lower torso near the waist . Diabound can change its features and appearance as Bakura ' s hatred increases , as it absorbs more " ka " , or when the Millennium items are present , making it more demonic and bestial . Over the course of the story , its grey skin darkens to dull green with blue stripes and underbelly , its mouth becomes gaping and full of fangs , its fingers become encased in claw - like armor , its serpent head gains a cobra - like hood , and a large eye appears on its chest . On the stone tablet of " Diabound " , the monster ' s snake - tail is shown curled into an – an ancient symbol represented as a serpent or dragon biting its own tail . It represents self - reflexivity or cyclicality , especially in the sense of something constantly re - creating itself , the eternal return , and other things perceived as cycles . It can also represent the idea of primordial unity related to something existing in or persisting from the beginning with such force or qualities that it cannot be extinguished . This is fitting , as Diabound is most characterized by its near - indestructibility , as well as its continuous cycle of self - improvement . Abilities . Since Diabound is the most powerful monster in Bakura ' s possession , it was able to defeat six of the Pharaoh ' s Sacred Guardians with ease and defend itself against one of the three Egyptian God monsters ' attacks ; but was ultimately defeated by one of their attacks . Diabound ' s primary ability lies in its natural ability to evolve itself over time . Diabound has the ability to inherit the abilities and attack of each monster that it destroys in battle , growing exponentially more powerful with each victory . In addition , Diabound is capable of evolving at will in tune with Bakura ' s hatred or through proximity with Millennium Items in his master ' s possession . Diabound ' s natural offensive attack is named Helical Shockwave ( " Rasenhadō " in the Japanese anime ) and takes the form of a spiral laser fired at the enemy . It later develops a second ability to conceal itself in darkness , even in the darkest part of the environment – shown to have been taken from Shadow Ghoul ( " Kagenuke " ) . However , it can be cancelled if it is exposed to direct light , which renders it vulnerable to attack . It later inherits Mahad ' s Dark Magic Attack ( " Madōha " ) , and Slifer the Sky Dragon ' s Thunder Force and Lightning Blast ( " Sandā Fōsu " and " Shōraidan " ) . When Diabound reaches its final evolution , it develops the ability to summon the evil spirits of the villagers ( which were the origin of its creation ) to protect him .