Number " Number " ( Japanese : " Nanbāzu " , " Numbers " ) is an archetype of Xyz Monster s that are the focus of the story in the " Yu - Gi - Oh ! ZEXAL " anime and manga series . Each " Number " monster has a corresponding included at the start of its name after " Number " ( and occasionally a letter , such as C ) . " Number Wall " and " Numbers Overlay Boost " are not " Number " cards because they do not have 「 」 in their Japanese names . In the anime and manga , there are three basic " Number " monster variants : Emperor ' s Key " Numbers " ( monsters with numbers from 1 to 100 ) , Over - Hundred Numbers ( monsters with numbers from 101 to 107 that are not pieces of Astral ' s memory , but instead are the signature card s of the Seven Barian Emperors ) , and " Barian Number s " ( fake monsters created by Don Thousand ) . So far , 93 original " Numbers " have been revealed by name . 18 " Chaos " versions ( Number C ) , 2 " Shining " versions ( Number S ) , and 2 different Xyz Evolution s for " " — 1 Rank - Down version ( ) and 1 Rank - Up version ( ) of the original 100 " Numbers " — have also been revealed . In addition to the original " Numbers " , 7 " Over - Hundred Numbers " ( Number 10X ) and their own " Chaos " versions ( Number C10X ) , 5 fake versions ( Barian Number ) and 2 versions of " Number 0 " - 1 " Future " version ( ) and 1 " Shining " version ( ) - have been revealed . As confirmed by Satoshi Kuwabara , " Number " monsters are not chosen randomly but are decided " carefully with attention to details , so that fans can enjoy it in various places " , which often results in puns and second meanings for each " Number " . The " Number " archetype has the most members of any archetype in the " TCG " / " OCG " . Anime . During Astral ' s battle against Don Thousand , fragments of Astral ' s power were scattered across Earth and designated the location of the Numeron Code . They took the form of 50 " Numbers " , among them the seven Mythyrian " Numbers " and the four " Numeron Gate " monsters . When Yuma Tsukumo unlocked the door with his Emperor ' s Key , he opened a portal between Astral World and his own , which allowed Astral to come into his world . Yuma found himself trapped within a sphere of blank card s , which shortly flew away . Astral ' s remaining power and memories were scattered into 50 more " Number " cards . Astral cooperated with Yuma to regain his lost memories . When Astral collected all of the cards , something else happened besides his memory recovery . Astral thought it ' d cause something troublesome , while Dr . Faker claims Astral will obtain a great power and use it for taking revenge on him . It is later revealed that Astral will obtain the Numeron Code , which he was to use to annihilate Barian World in order to Rank - Up Astral World , but Yuma aborted this mission . However , Barian World ' s leaders , the Seven Barian Emperors , were also trying to collect the " Numbers . " If all Numbers were collected , they would obtain the Numeron Code and use it to destroy Astral World . Usually , " Numbers " are blank cards that take the form of something that whoever finds them desires the most , design themselves to fit their original owner ' s Decks and keep that form forever . Some Duelists may have more than one " Number " card that fit their Deck . Their card text is written in a strange alien language that only those who wield them can understand ( in the dub , all " Numbers " appear normally like other cards seen with the exception of episode 2 , in which " " is blurred ) . When they are Summoned , their respective numbers are printed on their users , appearing in many places as the forehead , neck , left and right hands ( in Cameron Clix ' s case , it appeared under his right eye and in Number 56 ' s holder ' s case , it appeared on his left shoulder ) . When Summoned , most " Numbers " initially appear in what design sheets refer to as their " neutral form / body " , often called a " sealed form " by fans . The " Number " then transforms into the creature depicted in the card ' s artwork through various means . " Number " monsters use a galaxy - like Overlay Network portal in contrast to regular Xyz Monsters , who use a red spiral portal . Astral stated that there are 99 " Numbers " , but according to Kite Tenjo there are 100 " Numbers " . As Astral had successfully retained 1 of the " Numbers " , " " , it is possible Astral was referring to the " other " 99 " Numbers " . However , Dr . Faker believes that , aside from 99 " Numbers " which are Astral ' s pieces of memory , Astral himself is " the Original Number " ( ナンバーズのオリジナル , " Nanbāzu no Orijinaru " ) . Later Astral corrected himself , stating there are one hundred " Numbers " . A " Number " monster is absorbed into Astral when a Duelist using it is defeated . The " Number " can then be used by any Duelist whom Astral is currently with . Each " Number " contains a piece of Astral ' s memory , which he recovers each time he absorbs one . After Astral absorbs a " Number " , they are stored in a Different Dimension Airship within the Emperor ' s Key . Each has its own pillar within the structure , engraved with its number . " Numbers " in the anime are dangerous cards as they can easily amplify the darkness and desires of their holder user , whether these cause were good or bad . The " Number " monsters can also easily possess their holder with their power with the exception of Yuma ' s possession of the Emperor ' s Key , Kite Tenjo ' s Photon Transformation , and the Vetrix Family ' s crest s . Some individuals can overcome the possession of a " Number " , as demonstrated by Shark with his " " . However , the power of Photon Transformation and the crests seem to be limited , and has fatal consequences and being used to wield a " Number " card will drastically exhaust their user . When a Number holder has reached a high level of a certain emotion , " Chaos Numbers " start to appear . For example , Astral and Yuma obtained " " after Astral was happy to know Yuma considered him a friend . Reginald Kastle also obtained " " after his desire for revenge was amplified by " Shark Drake " . In the " Barian Invasion " arc , " Numbers 10X " are introduced as the signature cards of the Seven Barian Emperors . Astral cannot absorb them , as they are not part of his memories . They were later revealed to be created by Don Thousand as a means to release himself from his prison and restore his power . Later on , the Mythyrian " Numbers " were introduced by Vector and Don Thousand that are located in ruins across the world , protected by guardians . Each of these " Number " corresponds to a legend inscribed on the walls of the ruins , telling the story of the person who occupied that location in a previous era , before they became ruins due to the ravages of time . Rather than take their form based on their holder ' s Deck , they take a form relative to the legend that is described . " Numbers " can be Ranked - Up as seen when Yuma / Astral used " Rank - Up - Magic Astral Force " to Summon " " . " Numbers " can also be Ranked - Down , as seen when Yuma performed a Rank - Down with " Rank - Down - Magic Numeron Fall " to Summon " " . What sets " Numbers " apart from other Xyz Monster s in the anime is that they can only be destroyed by battle by another " Number " , though this is a card effect and thus can be negate d . In the TCG / OCG , " Number Wall " provides this protection instead . " Numbers " are the result of great power being sealed into a card , as demonstrated by Yuma ' s " " , which was created through Yuma ' s power to believe in others . As a result , " Numbers " possess powers far beyond that of ordinary Xyz Monsters . Manga . In the " Yu - Gi - Oh ! ZEXAL manga " , " Numbers " are held under the diabolical door along with Astral . As Yuma finally opens the door during his Duel with Shark , a huge light appears and numerous blank card s flow out of the door in every direction . Astral stated that " Numbers " are fragments of his memories , and that he shall collect all " Numbers " in order to retrieve his memories . Also , he says " Numbers " battle to absorb each other so , if he and Yuma lose , he will disappear . When Astral obtained a memory piece from " " , he said his memory is divided into 100 " Number " cards . This amount of number is later confirmed by both Kaito Tenjo and Mr . Heartland . Like in the anime , " Numbers " are blank cards that take the form of something that whoever finds them desires the most , design themselves to fit their original owner ' s Decks and keep that form forever . Some Duelists may have more than one " Number " card that fit their Deck . What sets " Numbers " apart from other Xyz Monster s in the manga is that they can only be destroyed by battle by another " Number " , though this is a card effect and thus can be negate d . In the TCG / OCG , " Number Wall " provides this protection instead . However , Kyoji Yagumo as shown an unique ability of manipulation with the " Numbers " : Molding them according to his needs since he claims not to have any desires , . Yuma believes the power of the " Numbers " is not evil and that if a good person had them , it would be okay . According to Luna , " Numbers " are mirrors that reflect the hearts of the people . For example , when Shark had " Leviathan Dragon " , his heart was full of darkness and then dominated , but Yuma and Astral freed him from that darkness , which made him able to possess a " Number " without falling under its power . Luna believes that the very fact that " Numbers " can be good or evil means they should not exist , as people will fight over them regardless . It seems that just like how a " Number " takes form after their holder , their power do so as well . The powers a " Number " can possess is made clear in the manga ; while " " helped its unsuccessful holder on his restaurant , " " and " " are dangerous " Numbers " who inflict real damage to people and can even put their lives in danger . It was also shown that " Numbers " can evolve into Shining Number s , as seen when Yuma evolved " " into " " . Members . Original . Each of these cards are stated to contain parts of Astral ' s memories . After Nash ' s defeat and the conclusion of the war with Barian World , Astral came into possession of all one - hundred " Numbers " . Of the 93 original " Numbers " that have been revealed by name , 24 have not appeared or been mentioned in the anime or manga ( exclusively appearing in the " TCG " / " OCG " ) . 4 original " Numbers " that have appeared or been mentioned in the anime have not been released in the " TCG " / " OCG " ; all " Number " monsters that appeared in the manga have been released as cards in the " TCG " / " OCG " . 7 Numbers have so far not appeared at all . These numbers are : 26 , 27 , 60 , 67 , 75 , 76 , 97 Mythyrian Numbers . Mythyrian " Numbers " are a group of special " Number " cards that are located in ruins . They are still part of the original 100 " Numbers " of the Emperor ' s Key . Number 10X ( Over - Hundred Number ) . " Number 10X " ( read as " Over - Hundred Numbers " ) are the signature " Number " cards of the Seven Barian Emperors , whose numbering go over the limit of 100 . They were created by Don Thousand to suppress the Emperors ' memories of their past lives as humans . Number C ( Chaos Number ) . " Number C " ( read as " Chaos Number " ) are upgraded versions of the base " Number " , which are Summoned by overlaying their base counterpart through Chaos Xyz Evolution , " Rank - Up - Magic " cards , " Chaos Field " , and " Don Thousand ' s Throne " . Number C10X ( Chaos Over - Hundred Number ) . " Number C10X " ( read as " Chaos Over - Hundred Numbers " ) are upgraded versions of the base " Number 10X , which are Summoned by " Rank - Up - Magic Barian ' s Force " or " Rank - Up - Magic - The Seventh One " , using their base form ( Number 10X ) as Material . Number S ( Shining Number ) . " Number S " ( read as " Shining Number " ) are upgraded versions of the base " Number " , which are Summoned by overlaying their base counterpart through Shining Xyz Evolution . This evolution only exists in the manga , and can be considered the manga ' s counterpart of Chaos Xyz Evolution . Rank - Down Numbers . These are " Number " monsters that are downgraded versions of regular " Number " monsters . They do not have a prefix as seen in other " Number " evolutions ( " C " and " S " ) . They are Summoned via " Rank - Down - Magic Numeron Fall " or " Rank - Down - Magic Utopia Fall " . Rank - Up Numbers . These are " Number " monsters that are upgraded versions of regular " Number " monsters . Unlike other upgraded forms , the " Numbers " don ' t have a prefix ( " C " and " S " ) . They are Summoned using the effect of " Rank - Up - Magic Astral Force " . Barian Numbers . These " Numbers " are the creation of Don Thousand and a different series aside from the originals , some of which were contained in the Fusionizer s . Number F ( Future Number ) . This " Number " is born from Yuma ' s own power and belief in the future during his final Duel with Astral .