Kadaj Kadaj is the primary antagonist of the novel " Final Fantasy VII Lateral Biography Turks - The Kids Are Alright - " and the secondary antagonist of " " . An embodiment of Sephiroth ' s will manifested from the Lifestream , his goal is to find Jenova , whom he considers his mother , and bring about a second Jenova Reunion . The novel " Final Fantasy VII Lateral Biography Turks - The Kids Are Alright - " , written by scenario writer Kazushige Nojima , sheds some light in the events that happened prior to " Final Fantasy VII : Advent Children " . Profile . Appearance . Like the other embodiments of Sephiroth ' s will , Kadaj resembles Sephiroth to a great degree and is described by Vincent Valentine as a " larval " form of Sephiroth . Kadaj wears black leather clothing with gauntlets and a coat , which he keeps zipped up . The image of a single wing is sewn on the back of his coat as an allusion to Sephiroth . He has shoulder - length silver hair that partially covers his face and green cat - like eyes . Kadaj ' s weapon is the Souba , a katana with two parallel blades that he carries in a sheath on his lower back . Personality . Kadaj embodies Sephiroth ' s cruelty and insanity . He is devoted to Jenova and dedicated to finding her , but is unaware of Sephiroth ' s influence over Jenova . As a result , Kadaj is insecure over Jenova " choosing " Sephiroth over him , and though he does not fully understand who Sephiroth is , he tells Rufus Shinra he can sense his presence . Kadaj is arrogant and mocks Rufus and the Turks , and thinks of Cloud Strife as his " brother " through Jenova , but considers him a traitor to their cause . When driven to anger Kadaj attacks with fury , such as when he attacks Cloud when Cloud reminds Kadaj he is only Sephiroth ' s pawn . Nomura describes him as " talking quickly , then speaking slowly or breaking into laughter for no apparent reason " . Abilities . Kadaj is a highly skilled swordsman and battles Cloud competently one - on - one . When Cloud is weakened due to Geostigma , Kadaj can defeat him , and is strong enough to defeat both Reno and Rude alone . Kadaj can summon hordes of Shadow Creeper s from the Lifestream , and uses Materia to summon Bahamut SIN . In " Advent Children Complete " , Kadaj infiltrates Healen Lodge by transforming into a black mist . Upon walking into the water at the Forgotten Capital it turns dark and the Jenova cells within the children become active when they drink it . This may be a form of Limit Break , as Kadaj glows in a manner similar to other characters in the film when they use their Limit Breaks . In " Turks - The Kids Are Alright - " , Kadaj appears before certain individuals under the guise of deceased persons from their past to manipulate them to help him search for Jenova , reminiscent of Jenova ' s transformation power . He can vanish and reappear in another location , and to become immune to attacks from firearms , likely extensions of his ability to disperse into mist . He can take away people ' s physical pain as well as re - grant it , as evidenced by his " mending " Evan ' s shoulder wound and his encounter with Evan in the mountains . Unlike most antagonists with great physical and magical power in the " Compilation of Final Fantasy VII " , Kadaj does not have Jenova cells , and not acquire Materia until halfway through the events of " Advent Children " . His unusual magic abilities are derived from the negative Lifestream that makes up his body , while his great physical strength and combat proficiency come from being a personification of Sephiroth ' s memories . Story . " Final Fantasy VII Lateral Biography Turks - The Kids Are Alright - " . Kadaj was born in a pond of blackened water near Nibelheim . He saves Kyrie from sinking in the pool , and ends up conversing with her at Dr . Drake ' s office , with the latter seeing him as a friend who died in a fire , due to Kadaj ' s ability to mimic the appearance of one ' s dead relatives , a trait he shares with Jenova . Kadaj later disguises himself as Dr . Drake and Fabio , and takes away Evan Townshend ' s pain from the surgery when his arm was shot . When confronting him at a cabin on the mountain , he gives him back his ability to feel pain . Kadaj later attempts to manipulate Kyrie into supplying him information on Jenova ' s remains , but Kyrie shoots at him . Kadaj attacks a Turk helicopter and tricks it into shooting itself down with a missile . He goads Kyrie into going into one of the crevasses and pursues them in the caverns , only to end up diving into the Lifestream and dissolving after Evan kicks the still - living remains of Jenova into it . Kadaj ' s trip into the Lifestream , like Sephiroth before him , does not kill him . He revives himself within the North Crater as the Turks are collecting Jenova ' s remains , as well as having two more Remnants of Sephiroth , Loz and Yazoo , come to existence alongside him . They defeat the Turks , before deciding to locate Jenova ' s head , which the Turks escaped with . Kadaj appears on the Midgar Wasteland to summon Shadow Creeper s to attack Cloud while he is out riding his motorcycle . After speaking to one of the Turks over the phone , he recalls his monsters and sets off to find Rufus Shinra . Arriving shortly after Cloud leaves Rufus , Kadaj reveals that the plague Geostigma is caused by the remnants of Jenova in the Lifestream , and that those infected are part of a plan for a second Jenova Reunion that will recreate Sephiroth . Geostigma alone is not enough and Jenova ' s remains are needed , and Kadaj believes Rufus knows where they are . With a group of infected children brought to the Forgotten Capital , Kadaj tells them Geostigma is caused by their bodies rejecting Jenova ' s influence , and that her presence makes them brethren . Kadaj has the children drink from a pool of dark water , activating the latent " reunion instinct " in their Jenova cells . Cloud battles Kadaj and his brothers , but outnumbered and weakened by his own Geostigma infection , is defeated and saved by Vincent Valentine . Vincent tells Cloud of the true nature of Geostigma , and the impending rebirth of Sephiroth it could mean , although he does not yet reveal Kadaj ' s connection to Sephiroth . With the reunion instincts of the children to guide them , the Remnants look for Jenova ' s remains in Edge . Loz and Yazoo battle the Turks and Kadaj summons Bahamut SIN to attack the city . During the attack , Kadaj confronts Rufus and confirms that Sephiroth is about to be reborn . After Cloud and his friends defeat Bahamut SIN , Rufus reveals Jenova ' s remains in a box concealed under his cloak . Casting the box off the building where they are standing , Kadaj leaps after it catching it mid - air . The ensuing chase between the Remnants and Cloud along the highways into Midgar apparently kills Yazoo and Loz . Kadaj gains the lead and stops at the Sector 5 Church to inspect Jenova and is horrified at what is left of her and cries . Cloud bursts in , and an enraged Kadaj attacks him . Aerith calls a geyser of healing water to erupt from the flowerbed , wounding Kadaj and causing him to flee . The water cures Cloud of his Geostigma . Cloud confronts Kadaj outside the ruins of Shinra Headquarters . Kadaj is unaware of what to do with Jenova ' s remains now that he has them , and when Cloud points this out , he attacks . Back to his full strength , the battle ends with Cloud as the victor and Kadaj hanging from the edge of a tower . Kadaj leaps into the air and absorbs Jenova ' s remains into his body , leading to the recreation of Sephiroth moments later . After Sephiroth is defeated , a mortally wounded Kadaj is reformed from his dissolving remains , and attempts a halfhearted attack on Cloud , but instead collapses into his arms . Weakly calling him " brother " , Cloud holds him while Aerith speaks to Kadaj from the Lifestream . Believing her to be Jenova , Kadaj calls her " mother " and happily dissolves with her guidance . Creation and development . Kadaj was designed by Tetsuya Nomura . Before Kadaj was named or his brothers were designed , the character model and artwork for Kadaj were called " Lost Name " . Kadaj was the first remnant to be shown in film footage , appearing during the Tokyo Game Show in a short trailer in which he fights Cloud , who is armed with the Buster Sword as the Fusion Swords had not been designed yet . For this scene Nomura attended the motion capture session and modeled for Kadaj himself to demonstrate his fighting style using a bamboo sword . At this point , Kadaj was referred to as " the mysterious enemy " . Kadaj was made the youngest remnant and their leader to provide the psychological terror of an unstoppable child . At first , Kadaj was meant to be a violent teen acting out irrationally . The subplot of the remnants pursuing Shinra to find Jenova ' s head was added to give Kadaj a purpose to pursue . Two scenes featuring Kadaj — his conversation with Rufus during the attack on Edge , and his death scene where he hears Aerith — were going to be cut from the final product , but Nomura pushed for them to be included to expand on his character . The staff envisioned Kadaj as a reminder of what Cloud once was — a puppet to Sephiroth ' s will — which led to the inclusion of the line in which Kadaj reminds Cloud of this . The line endeared Kadaj to the staff , which led to the development of more scenes featuring him . Voice . Kadaj is voiced in Japanese by . He shares his Japanese voice actor with Naghi Minatsuchi from " Final Fantasy Type - 0 " . Morikubo ' s voice helped shape Kadaj as a dazed youth with an insane streak . Nomura chose Morikubo as he felt Kadaj would have an accent , and Morikubo had a peculiar speech pattern he found fitting . Morikubo joked that Kadaj ' s lines were difficult to get right due to the sudden shifts in tone his insanity called for , and it was only after failing to get them right and " losing his cool " that the desired effects would be achieved . Co - director Takeshi Nozue described Kadaj being easy to model as the strength of Morikubo ' s voice work gave a strong impression of how Kadaj should look . He is voiced by in English . Other appearances . " Final Fantasy Trading Card Game " . Kadaj is featured in a trading card alongside Cloud , depicting an official artwork for " Final Fantasy VII : Advent Children " . Kadaj also has two cards of his own , both ice - elemental . Etymology . This refers to Kadaj ' s role as a remnant of Sephiroth .