Barian World Barian World or Varian World ( バリアン " Barian Sekai " ) , is a dimension located in parallel world in the " Yu - Gi - Oh ! ZEXAL " anime that is a counterpart of Astral World . It is ruled by the Seven Barian Emperors and its malicious deity and embodiment is Don Thousand . Barian World was once part of Astral World and was created with the purpose of hosting any soul that possessed the power of Chaos . The world was originally small , but later expanded due to all the souls that were caught in the middle of Nash ' s campaign against Vector . Structure . Barian World is a world made of various powerful energies resembling Astral World , but with a reversed color scheme . Like the Earth , Barian World experiences rainstorms on occasion . Unlike Earth , Baria Crystal s occupy most of Barian World , as do red tundras . History . Thousands of years in the past , Don Thousand confronted Astral in battle and was defeated , but not before a shard of his essence was stuck to him . Astral then sealed him within the Barian Sea . When Dr . Faker entered Barian World by sacrificing two people - Kazuma Tsukumo and Byron Arclight , he was met by Vector . Vector agreed to use the powers of his world to sustain the life of Faker ' s son Hart Tenjo . In exchange , Faker was to destroy Astral World . To that end , he began gathering " Numbers " to power the Sphere Field Cannon . However , he told other people he made the pact with Vector in order to conquer the world . Faker ' s son , Kite , owns a robot called Orbital 7 , which was fueled by Baria Crystal , a fuel source from Barian World . Although Faker did not tell Kite the whole story , he was at least aware that Barian World existed and was related to the " Numbers " in some way . Byron Arclight ( who eventually became known as Vetrix ) , was rescued by a group of Barian s and granted the abilities of Barian World . His saviors requested that he collect the " Numbers " and destroy Astral World as compensation for their help . These abilities included the power to restrain opponents with chains , and ownership of the card , " Final Prophecy " , which is capable of opening the doorway to Barian World . Vetrix said that he trusted only two things - himself and Barian World , as they are what protected him after being betrayed by Dr . Faker . Yu - Gi - Oh ! ZEXAL . World Duel Carnival Preliminaries . Vetrix gave " Final Prophecy " to Trey , which was activated during Trey ' s Duel against Yuma Tsukumo . It caused the gateway to Barian World to appear , which threatened to destroy all of existence . However , Trey and Yuma cooperated to seal the gate . World Duel Carnival Finals . In the semifinals of the World Duel Carnival , Vetrix used chains that came from Barian World on Yuma . He told Astral that his own powers would not be able to affect the material , as Astral ' s powers came from Astral World . Yu - Gi - Oh ! ZEXAL II . Barian Invasion . After the constant failures of Girag and Alito , Dumon decided to send Mizar to Earth in order to Duel Yuma . He gave Mizar three Barian Sphere Cube s , one for Mizar and two of which he was to give to Girag and Alito . He then disappeared into a portal and appeared in another realm , where he approached , which he sealed in a blank card . Following Alito ' s ambush by Ray , Mizar took him back to Barian World to recover from his wounds . After Girag ' s defeat by Yuma and Ray , he was severely injured and forced to retreat to Barian World . Mythyrian Number War . Frustrated that his machination against Yuma and his allies was defeated , Vector dove into the Barian Sea to release the Barian deity , Don Thousand , who granted Vector his power in exchange for locating the seven " Mythyrian Number " cards that sealed him away long ago . At the same time , Barian World began to crumble , leaving Mizar and Dumon wonder if their world was ending . Vector appeared to them , telling them that they need to find the " Numbers " before Astral recovers his powers and destroys their world . Locating these Numbers with assistance from Mr . Heartland , who had been transformed into a fly by Vector after falling into Barian World , Vector used his power to revive Alito and Girag . Number 96 ' s power returned to Don Thousand upon his defeat . Thousand proceeded to lead Vector to his palace . Thousand revealed four " Numbers " with great power to Vector , who wished to go crush Yuma with them immediately . Thousand insisted that it was not time yet . He revealed a device , capable of combining Barian World and Earth , if the malice of the human world reached that of Barian World . This would amplify his power one - thousand fold - enough to destroy Astral World . To do so , he needed to make more of those devices , which was where the power he regained from Number 96 would go . He instructed Vector to sit on the throne . When Vector did , Thousand fused Vector to it , rendering him immobile as the two needed to stay in the palace in order to put the power to work by building more devices . After Erazor ' s defeat at the hands of Yuma and Trey , Heartland reported the failure to Vector and apologized . Vector responded that he would tolerate no more failures . Heartland revealed he had the next assassin set up - Chironex , a WATER Duelist who once served as Heartland ' s own mentor . Upon hearing this , Vector ordered Heartland to send Chironex after Shark and mused that whenever he thinks of Shark , his chest fills with rage . When Chironex was defeated , Scritch came to stop Yuma ' s journey to Astral World , but was defeated by Quinton and Kite , who managed to send Yuma to get Astral back . While Yuma journeyed through Astral World , he encountered Ena , who revealed that long ago , Barian World was once part of Astral World and that the same world was created with the purpose of hosting any soul that possessed the power of Chaos . Barian Emperor Onslaught . During this time , Don Thousand and Vector initiated their machination , sending many " Fake Number s " they mass produced to corrupt the populace of Earth , as they were to be sacrificed so that Barian World can be merged with Earth via the Fusionizer . When Yuma returned , he started a Duel with Mr . Heartland , who harmed Kite using the " Number " he obtained from Scritch . Mr . Heartland used his " Number 1 " and transformed himself into a demonic humanoid , depleting Yuma ' s points rapidly . However , Yuma and Astral merged into ZEXAL III and defeated Mr . Heartland , causing the counterfeit " Numbers " Vector and Don Thousand created to be destroyed . However , Dumon managed to get Rio and Shark back as Nash and Marin , the two missing Emperors , turning them against Yuma , Astral and Kite . After defeating Don Thousand , the Seven Barian Emperors were revived by Astral using the Numeron Code , but now as humans just as they were from their past incarnations . According to Eliphas , Astral fused Barian World and Astral World using the Numeron Code . Relationships . Earth . Barian World and Earth have shown a strong connection with each other . Several humans who have died on Earth , have been reincarnated as Barian s , such as the military of the United Lands of the Poseidon Ocean , Iris , the Fearsome Four of the Dark Dueling World and the Seven Barian Emperors . Barians can reincarnate as humans , such as Nash and Marin , who were reincarnated as Reginald Kastle and Rio Kastle respectively . Humans , who were reincarnated into Barians can acquire an alternate alien - like form and several superhuman abilities such as teleportation and energy blasts , among others which vary from each individual . According to Don Thousand , if the hatred of Earth is great enough , it is possible to fuse the Earth with Barian World , suggesting a malicious connection between the two worlds . Those who die with sorrow and resentment in their hearts go to this world . Astral World . Barian World was once at war with Astral World , it ' s been confirmed by Eliphas and Astral that Astral ' s mission is to destroy Barian World , while the Barians want to destroy Astral World in order to prevent that . Both factions seek the " Number " cards , with the ultimate objective being the Numeron Code . Since the two worlds cannot interact directly , the Earth is exploited as their battlefield , with humans being recruited or coerced to assist in their cause . However , through Kazuma and ultimately Yuma ' s efforts , Astral world began to consider abandoning the power of Chaos an error . This mistake is resolved once a changed Astral used the Numeron Code to fuse the two worlds back together , which brought up many new challenges for the world in the process .