Astral ( manga ) Astral ( アストラル " Asutoraru " ) is a mysterious entity in the " Yu - Gi - Oh ! ZEXAL " manga , and one of the main protagonists , along with his comrade Yuma Tsukumo . Upon arriving in Yuma ' s world , his memories were scattered in the form of the 100 " Number " cards . While originally he only retained of the " Numbers " , he knew that when two or more " Numbers " confront in a Duel , they will fight each other to consume one another , allowing Astral to absorb defeated " Numbers " and regain pieces of his memories . Design . Appearance . Astral is an energy being from Astral World with clear blue and transparent body that consists of green markings and blue gems all over his body . He has blue hair that curls up in a Mohawk and pointed ears , which are pierced with dangling earrings . Astral has heterochromatic eyes ; the left eye luminous gold and the right is a clear white . Biography . When Yuma Tsukumo was Duel ing against Shark , Shark was overpowering Yuma since the beginning . But when Yuma decides to believe in himself , his broken pendant restores itself , and Yuma uses it to open The door of his dreams . When he does so , a dark card , called a " Number " , possesses Shark , making him even stronger . However , at the same time , a mysterious entity , called Astral , appears before Yuma , and tells him to " stand up and win " . Astral says that he is a Duelist , but that he lost his memories . Also , Yuma notices that nobody else can see Astral besides him . Later , seeing Shark ' s " " , Astral remembers the " 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 . Astral gives Yuma advice during the Duel , and Yuma appears to begin a comeback . However , he flubs another move , forgetting to activate his " Bye Bye Damage " Trap Card , which could have saved him Life Points . When Shark reduces Yuma ' s Life Points to 500 and puts him in a corner , Kotori tells him not to give up , and he stands , betting everything in his draw . Yuma draws " Monster Reborn " and decides to counterattack Shark ; however , Yuma accidentally makes a misplay . Astral says that Yuma is pathetic , but that his feelings are strong , and that they will win if Yuma trusts him . Suddenly , a black card is revealed in Yuma ' s Extra Deck - Astral gave him a " Number " card , " " , which was formed through Yuma ' s and Astral ' s hope ( Note : The original name of " Utopia " is " Hope " ) . Then , using the " Number " and " Double Up Chance " , Yuma and Astral were able to win . After that , Astral absorbs Shark ' s " Number " , and Yuma tells him the Duel was fun . Shark then leaves saying that he wouldn ' t forget that . From that on , Astral becomes Yuma ' s partner . Later , Yuma is deceived by a boy named Tokunosuke , who gets interested in him as he was able to defeat Shark . He asks Yuma for his autograph , and gives Yuma " Baby Tragon " , saying that would represent their friendship . At home , Astral asks who the two people in the picture Yuma has on his desk are . He tells him that those are his parents who never returned from their adventure . Astral recalls Yuma mentioning that his parents gave him the Emperor ' s Key and wonders if they are related to its powers . Yuma tells him to forget about that and shows him his new " Baby Tragon " card - his very own Xyz Monster . Yuma hears someone coming . His sister , Akari , enters the room and asks when he ' s planning to go to bed - she ' s trying to write a news article and Yuma won ' t be quiet . He apologizes and says he ' ll go to bed now . Seeing the card in his hand , she asks if he ' s been playing " Duel Monsters " . He says that of course he hasn ' t , as his sister previously forbade him to do so . Their grandmother muses that Yuma is a poor kid to be picked on like that . Akari believes that for Yuma , Dueling is more than just a game , and that it can ' t be helped . Astral is surprised to learn that Yuma isn ' t allowed to Duel and Yuma responds that his sister doesn ' t wish him to , as she believes something bad may happen . Astral thinks that perhaps Akari is aware of the relationship between Yuma and The Emperor ' s Key . Then , during the next day , Yuma Duels Tokunosuke at school . Yuma asks Astral if he was not going to participate in the Duel , and he replied saying that if " Numbers " are not involved , it doesn ' t interest him . During the Duel , Tokunosuke uses " Baby Tragon " to take control of Yuma ' s " Numbers " , and reveals that the paper which Yuma signed was an agreement to bet on their best cards for the Duel . But Yuma uses " Baby Tragon " together with " Needle Swordsman " and manages to win . After the Duel , Yuma offers Tokunosuke " Baby Tragon " back , but Tokunosuke lets it to Yuma , and they become friends . After a Numbers holder attempts to rob a shopping mall , Kaito Tenjo a Numbers Hunter , defeats him and absorbs his " Number " , alongside with his soul . Akari was investigating about the incident and asked Yuma if he knew anything about a " Numbers Hunter " . Surprised , Yuma asked why she knew about the " Numbers " . Akari asked if he knew something , but Yuma awkwardly denied . She then explained that the bandit kept muttering " Numbers Hunter " , but that she didn ' t know what that means , and that it seems to be related with Duel Monsters . Yuma then said that he couldn ' t know anything , since he is forbidden from Dueling . Akari noticed something wrong , but didn ' t say anything . Yuma then went to bed , while she kept working on the news . Later , at school , Astral discussed with Yuma about that " Numbers Hunter " , worried about what is his goal and if he would come after Yuma . However , Yuma didn ' t worry about that . As it was raining , everybody was in the class , wanting to go out and Duel . One of Yuma ' s classmates than suggests going to the gymnasium , and all rushed out towards there . In the way , it started raining more , and Kotori was getting behind . Yuma then told her to run , but when she was crossing the street , a truck was passing on it . Yuma immediately ran and pushed her out of the way , but now the truck was going to hit him . Yuma then notices he wasn ' t hit , and Astral finds the time has been stopped . Then , Kaito , the Numbers Hunter , appears . Kaito explains his servant robot , Orbital 7 , has caused the time freeze , and then , forces Yuma to a Duel , betting his " Numbers " and his soul . With no option , Yuma Duels him . However , even with his " kattobingu " spirit , he wasn ' t a challenge to Kaito , who dominated the Duel . When Kaito was about to win , Orbital 7 warns him his brother Haruto is in bad conditions , and Kaito immediately cancels the Duel and goes after him . With that , time goes back to normal , and Yuma falls on his knees , shocked on noticing how weak he is . Upon his loss to Kaito , Yuma ' s spirit is totally broken . Seeing that , Kotori tries in many ways to cheer him up , but it doesn ' t work , and she even ends up being hospitalized . Then , in order to help Yuma , his friends form the Numbers Club , with the intention of helping him collecting the " Numbers " . Then , after many research , Tokunosuke finds an information that " Numbers " exist in the Heartland Theme Park . By that way , they take Yuma to the park . However , the owner of the park , Mr . Heartland , hired three Numbers Hunters , who work in the park , collecting " Numbers " secretly disguised as employees . Yuma and his friends than go to the park , and have fun in many attractions . After trying many of them , they go to a roller coaster attraction called " Nature Crooz " , owned by a popular character from the Theme Park , Captain Corn . However , Captain Corn is one of the Numbers Hunters from the park , and as soon as Yuma enters in the roller coaster , he splits the wagons , separating Yuma from his friends , and challenging him to a Duel betting the " Numbers " . While Yuma and Corn Duel , Kotori , Tetsuo , Cathy and Tokunosuke notice Yuma ' s missing , and try to leave to look for him . But Captain Corn traps and almost kills them . However , Cathy ' s agility saved the group , while Yuma managed to defeat Captain Corn . Yuma and his friend then meet , and eat Captain Corn , who exploded into a pile of popcorn due the explosion of Yuma ' s " Hope Buster " . When Astral absorbs Captain Corn ' s " Number " , Mr . Heartland appears and reveals he is hunting the " Numbers " to destroy Astral ' s home , the Astral World , because it is evil , and Astral is the " messenger " . Yuma defends Astral , but Mr . Heartland clicks his fingers , and a kind of door opens in the floor , making them fall in the " Speed Field " , another attraction in the Theme Park . There , they find another Numbers Hunter from the Park , Thunder Spark , who challenges Yuma to a " Speed Duel " in the " Speed Field " . He also gives Yuma ' s friends a helicopter , so that they can watch the Duel . However , as Yuma couldn ' t concentrate in the Duel and in the ride at the same time , Astral offered himself to instruct him what cards to play while he rides , and said Yuma to trust him . In response to Astral ' s feelings , Yuma gets very spirited and begins riding . During the Duel , Thunder Spark showed himself as a valuable opponent , but that wasn ' t Yuma ' s only problem : the " Speed Field " contains a large variety of fields , each one with different obstacles , and while Astral Dueled , Yuma had big problems driving through them . When arriving at the water field , Yuma falls in the large and deep river located in there , and almost die . Kotori and Cathy even jumped from the helicopter trying to save him . However , as Yuma sinks , he listens to his father ' s voice , and does " kattobingu " . With Astral ' s help , Yuma manages to go back to the Duel , bringing out Captain Corn ' s " " , which together with his " Utopia " , allows him to reach victory . After a hard Duel , Astral finally reaches victory with Yuma . After Thunder Spark is defeated , Yuma thanks Astral , and they try to bump hands , but Astral ' s hand goes directly through Yuma ' s , and they just laugh on that . Yuma then goes to where Spark is , when Spark asks Yuma to shake hands , as he " did " with Astral . Yuma accepts it , but gets electrocuted with Spark ' s touch . Spark explains he could never shake hands with anyone , because he wasn ' t a human , and would electrify anyone he touched . However , happy for being able to touch a person , Spark now says his last words to Yuma , and quietly disappears in peace , letting his " Number " to Yuma . Yuma and Astral take the " Number " , as they lament Spark ' s " death " . After jumping into the Speed Field ' s river field in order to save Yuma , Kotori and Cathy got totally wet . They then find a room with some female clothes , and borrow a dress for each . There , Yuma and his friends find a big door after a staircase , which they pass by , entering a dark room , decorated with lots of dolls , and featuring a big stairway leading to a Doll House . Suddenly , Cologne , another popular character from the Heartland Theme Park , comes down the stairs , holding a candlestick . She initially greets them , but when Cathy replies , she notices Kotori and Cathy are using clothes from hers . The girls try to excuse , but Cologne doesn ' t listen to them , and enraged , throws the candlestick , which surrounds them with flames , and challenges Yuma to a Duel . Cologne quickly Summons her " Number " , " " ( called " Ken - chan " by her ) , totally overpowering Yuma . However , at a certain point of the Duel , Yuma asks her why is she so obsessed in winning and serving Mr . Heartland , and if she had any personal reasons like the previous assassin . She then tells Yuma and his friends about her past , and crying , yells that she doesn ' t want to be a miserable doll anymore . This feeling strike Yuma and the others , making Yuma hesitate about the Duel . At that time Cathy notes she was the girl who abandoned Cologne . She gets awkward and confused about what to do , but when she decides telling the truth , Kotori says that she was the one who abandoned her , and apologizes . She did this so that Cologne soothed her anger , and that Yuma could concentrate in the Duel , but Cologne knows she is lying , and gets even angrier , throwing oil in the fire surrounding them so that it gets higher , almost hitting them . Yuma and Astral continue the Duel . However , due to involving her " Number " and Yuma ' s " Gagaga Girl " , she loses the Duel . Yuma , the Numbers Club and Cologne then run towards an iron bridge in order to escape from the Heartland Theme Park , but the exit locks , and Kaito and Orbital 7 appear . Kaito challenges Yuma to a Duel in order to obtain his " Numbers " , but Mr . Heartland shows up from the upper stairs , interrupting them . Mr . Heartland smiles and orders Kaito to defeat the messenger from the Astral World in front of him . However , Kaito says that he didn ' t become a Numbers Hunter because of his orders , and triggers Orbital 7 ' s self - explode mechanism , kicking him towards Yuma ' s gang , which destroys part of the bridge . This makes Yuma and his friends fall in the water under them , which allow them to escape . Cologne explains that Kaito has became a Numbers Hunter to protect his little brother , who is ill . Astral tells Yuma that even Kaito ' s reasons being noble , as long as he continues being a Numbers Hunter , someday they ' ll have to fight each other . Yuma replies saying that he knows that , and when that happens , he will not lose . Later , Yuma and the members of the Numbers Club gather in Cathy ' s house . Everyone get impressed at her mansion . Astral comments that it is much better than Yuma ' s house . Tetsuo then asks Cathy what she wanted to show them . She then presses a cat paw - like button , which opens a door leading to a big room , with many researchers and big computers . Cathy explains that as an apology for the trouble she caused , the Numbers Club ' s headquarters would be established there , where they can look up mysterious phenomenons happening throughout the world , and therefore , locate the " Numbers " . While the guys get amazed on the technology and say how Cathy is really put into it , Kotori sarcastically says Cathy is letting her money do the talking , while she replies saying asking if Kotori could do that . Yuma says that finding the " Numbers " is not a game , to which Astral replies saying that yet it was heartening , and advising Yuma to tell the others about the previous day . Yuma then tells them that Astral told him that now he got three " Numbers " , some of his memories have returned . Yuma asked what he remember , and Astral says his enemy is Dr . Faker , who plans on using the hidden powers of the " Numbers " to destroy the Astral World ; However , it is linked to this world . So , if the Astral World dies , this one will die as well . Kotori asks if that ' s for real , and Yuma answers saying that Astral doesn ' t lie - in fact , he can ' t lie . Cathy asks what is that hidden power of the " Numbers " , but Astral haven ' t regained that much memory yet . Takashi asks if Dr . Faker knows both worlds are connected , and Cologne says that he brought her to life , but that he is a really scary scientist , and that she wouldn ' t put it past him . Takashi and Tokunosuke get scared on how he knows about that fact but still wants to destroy the Astral World , and on how a man like that is collecting the " Numbers " . Yuma says that they have to get the " Numbers " first to stop Dr . Faker ' s plans , and Tetsuo then deduces the fate of the world is riding on this . Then , everyone , except for Tokunosuke , gets spirited up and say that they will keep on collecting the " Numbers " , and that the Numbers Club will protect the world . Astral then says to himself that thanks to Yuma , it looks as though his destiny is on the move . Non - canon . In the special chapter " Destined Meeting ! ! " , a voice tells Astral to wake up and work with a certain boy in the human world to save their world . During Yuma ' s Duel with Kaito , The Door appeared before him and told Yuma to open it and he will gain new strength in return . Yuma does so and Astral appears before him and tells Yuma to active " Monster Reborn " and bring back " Ganbara Knight " , then overlay the two Level 4 monsters to Summon " " . When " Utopia " appears , it causes Kaito ' s D - Pad to malfunction and he retreats . Afterwards Astral introduces himself and ask Yuma to fight alongside him and save the Astral World . Decks . Yuma ' s Deck . While Dueling alongside Yuma , Astral uses Yuma ' s Deck , but focusing on more defensive strategies . He uses several Stall and Special Summon ing cards to hold his opponent while he gathers material s for Xyz Summon s . Astral Deck . After retrieving his powers , Astral runs an " Astral " Deck , composed of " Astral " counterparts of Yuma ' s monsters . Astral uses them alongside cards like " Ritual Refinement " and " Parallel Material " in order to massively swarm " Number s " on his field . Astral ' s ultimate weapon though is " " , which he can Summon quickly with " Numbers Evaille " , a powerful monster that allows him to spawn even more " Numbers " , as well counting on maximum protection as long as he controls them .