Barian Sphere Cube A Barian Sphere Cube , known as a Barian ' s Sphere Cube or Varian ' s Sphere Cube ( バリアンズ ・ スフィア ・ キューブ " Barianzu Sufia Kyūbu " ) in the Japanese version , is a device developed by the denizen s of Barian World in the " Yu - Gi - Oh ! ZEXAL " anime . They project a Sphere Field in order for the Barians to show their true original form as they cannot show it in a low - energy world such as Earth and thus must retain their human form . So far , five have been shown to exist and were all used by Mizar , Alito , Girag , and Vector . Design . Appearance . When inactive , a Barian Sphere Cube appears in the form of a black cube containing a mini red - colored Sphere Field pulsating with electricity . After activation , the cube bursts open and the Sphere Field enlarges . Abilities . The Sphere Cube grants the Barian race the ability to gather " Number " cards . When inside it , they may revert to their original Barian forms . Both of these actions are usually impossible when a Barian is on Earth , as they can only take human form there ( however Vector was able to conjure an illusion looking as if he could maintain his true form on Earth " without " use of one ) . It is also shown when a person hits their back against the Sphere Field , they are shocked by it , as shown when Yuma was blown back when " " was destroyed by " " . The device negatively affected Astral . After only a short time within the field , he was injured enough that he continued to fade in and out after the Duel ended , though his condition became normal over time . If Astral stays in for too long , he becomes so injured that he becomes severely incapacitated . Limitations . An item may exit the Sphere Field without getting damaged . This is shown in the Duel between Yuma , Ray and Girag , when the Emperor ' s Key was thrown out the Field by Yuma . Sphere Fields generated by a Barian Sphere Cube cannot contain much energy , as the cube will become very unstable , as shown when Mizar ' s " " began to overload it . Also , unlike Dr . Faker ' s Sphere Field , which harvested all " Numbers " from both players at a Duel ' s end , a Sphere Cube seems unable to capture the " Number s " of the player who wins the Duel . They appear to be good for one use only . They also need a large space to be used properly ; if one is activated in an environment that is too small , then the device will destroy part of the environment in order to fit . Also it is possible to counter the effects using ZEXAL Field through ZEXAL III . History . After Alito and Girag ' s constant failures , Dumon handed three of these devices to Mizar before the latter departed for Earth , telling him to give one to Girag and one to Alito . After he gave the two their Cubes , Mizar immediately makes use of his own , tracking down Yuma Tsukumo and beginning a Duel . Monsters of significant enough power can affect the integrity of the Sphere Cube . When " " and " Neo Galaxy - Eyes Photon Dragon " were Summoned , the ground around the Sphere Cube began to collapse . Finally , when " " was Summoned , the Sphere Cube began to collapse . Mizar canceled the Duel as a result . During Girag ' s Battle Royal , he was about to defeat Yuma after wearing him down when Alito intervened , using " Lightning Clinch " and " Brain Reboot " to defeat all the remaining opponents . Girag was enraged by Alito ' s betrayal , but Alito told him that he wanted to Duel against Yuma fairly . After revealing his true nature as a Barian , Alito began his Duel with Yuma , with the former deploying his Barian Sphere Cube . The two battled as they had last time , with counter after counter , which excited Alito . As the Duel continued , Alito managed to Xyz Summon his own " Number " , " " . Yuma and Astral then united with the power of ZEXAL and Summoned " " , forcing it to tie in battle with Alito ' s " Number " , destroying both of them , to which both activated " Xyz Stand " . Alito shed his human disguise , revealing his Barian form to Yuma and Astral . With the effect of " Rank - Up - Magic Barian ' s Force " he managed to Summon " " which pushed Yuma into an even tighter corner . However thanks to ZEXAL and " ZW - Eagle Claw " , Yuma was able to defeat Alito . After the Duel , Alito left using a portal but was viciously attacked at his and Girag ' s base by an unknown person , only to be found later on by Girag , injured . When Girag asked him who did that to him , he said only the name " Shadows " . During Yuma ' s and Ray ' s Duel against Girag , Ray told Yuma that he was a member of " Barian ' s Guardian s " and threw him " Rank - Up - Magic Limited Barian ' s Force " . With it , Yuma Summoned " " , defeating Girag and destroying the Barian Sphere Field Cube . Vector ' s clone was shown to have at least two more Barian Sphere Cubes in his possession , which he used against Vector ( as Ray ) and later Yuma . After receiving and adjusting to the power of Chaos , Number 96 obtained the ability to create a Sphere Field without the aid of a Barian Sphere Cube . The sphere dissolved when Number 96 activated " Chaos Field " .