Nistro Nistro , known as Gauche in the Japanese and Italian versions , is a character appearing in the " Yu - Gi - Oh ! ZEXAL " anime . He was Mr . Heartland ' s left - hand man and a committee member responsible for maintaining the World Duel Carnival along with Dextra . Ultimately , his and Dextra ' s true task during this tournament was searching for " Number " cards . However , he resigned his position in order to join the World Duel Carnival along with his partner , with his goal being to defeat Yuma Tsukumo and the Original " Number " before Kite Tenjo did . He later became a professional Duelist , with Dextra as his manager and is currently the Champion of Spartan City . Design . Appearance . Nistro has flame - shaped dark red hair with a lighter red fringe and purple eyes . He has a Duel Disk which looks a lot like Quattro ' s , but more of a fireball based design . He also has a red Duel Gazer tattoo , like Kite Tenjo , Trey , Quattro , Quinton , and his partner Dextra . Prior to entering the WDC , Nistro used a black and dark red trench coat with a high collar over a red shirt with dark red trousers black shoes and black gloves as well as a bracelet on his left wrist identical to the one on Dextra ' s right ankle . Later , he can be seen wearing a grey and black colored coat with orange ruffles as well as two belts and leather pants with white and brown cowboy boots . During the Pro Duelist Spartancity Tournament , Nistro wears a form - fitting blue and red costume , resembling that of a wrestler . He also dons a star - shaped mask whilst wearing this costume . His nightwear consists of a sleeveless , black vest , brown belt and black sweatpants with a grey line down each side . Personality . Opposite to Dextra ' s cold - blooded personality , Nistro is a very high - spirited person , evident to how excited he got during the opening ceremonies of the World Duel Carnival . In the Japanese version , he has a habit of saying " nori " in each of his sentences . He also seems to take his job less seriously , as when investigating mysterious Duels within the tournament , he joked about how some of the Duelists were defeated , while Dextra maintained a calm manner whilst investigating . This tends to cause frequent arguing with his partner , but they actually get along better than they initially appear and their Dueling styles complement each other well . It also seems Nistro values Dextra ( or at least his colleagues in general ) highly , as during their Duel with Yuma Tsukumo , he activated a card that served no other purpose than to take the hit for Dextra . Nistro loves Dueling , heavily punishing anyone that dishonors Dueling . As a member of the committee , he is very severe when punishing a cheater , to the point of physically injuring the participant or forbidding him / her from Dueling in Heartland City for the rest of his / her life . Nistro can be quite competitive with Kite Tenjo , having some form of rivalry with him in collecting " Numbers " . After his defeat , he formed a friendly rivalry with Yuma because he liked his spirit , but he also considered Yuma as his " prey " since he possess the " Original Number " . Recently , however , he has allied himself with Yuma , because he does not want Yuma to be defeated by anyone except himself . . When Nistro Dueled Yuma , he showed a more child like nature , wanting to defeat Yuma with honor , and having Yuma " Duel with strong guts " . When he lost , Nistro told Yuma that it would dishonor him if he didn ' t Duel with all his might . During Yuma ' s Duel with Kite , Nistro cheered for Yuma more , in contrast to Dextra , who cheered for Kite only . He also supported Yuma when he Summoned " Heroic Champion - Excalibur " . Etymology . " Gauche " means " left " in French . This may be a reference to the fact of him being Mr . Heartland ' s " left hand " while Dextra is the " right hand " . His English name also reflects this , as " Nistro " contains the the middle four letters of " sinister " , which is another word for " left " . Furthermore , " Nistro " could be the short for " sinistro " , which means " left " in Italian . " Nistro " may also refer to the word " Nitro " which means speed , which resembles his fiery and excited personality . Abilities . Nistro is able to teleport . Anime biography . History . In their childhood , Nistro and Dextra grew up in Spartan City as orphans , but found happiness in Dueling . One night , they were picked up by Mr . Heartland , who instructed them further in Dueling and moved them out to Heartland . Years later , they were tested by Mr . Heartland alongside other young Duelist s such as Kite Tenjo in an attempt to find the next generation ' s elite Duelists . They were made to fight a Dueling robot , with Heartland having set its level to maximum . The robot physically assaulted them , with Nistro being thrown against a wall . When the robot attempted to do the same to Dextra , he yelled her name . Dextra was saved by Kite , who destroyed the robot with his " Daybreaker " . Yu - Gi - Oh ! ZEXAL . World Duel Carnival Preliminaries . During the opening ceremonies of the World Duel Carnival , Nistro , along with Dextra and Mr . Heartland , kept watch over various parts of Heartland City . Seeing the amount of Duelist s excited Nistro , but he was quickly scolded by Dextra who told him to be more professional . He then argued with Dextra , but was stopped by Mr . Heartland . Kite Tenjo arrived , with Nistro joking about how quickly Kite responded to Heartland ' s summons . Kite gave him an annoyed look in response . Nistro and Dextra investigated incidents during the World Duel Carnival , such as Tombo Tillbitty ' s Basket Rule . During that time , he wore a blue Duel Gazer . They were responsible for eliminating Duelists who broke the rules of the tournament , now Dueling with a tattoo - like Duel Gazer akin to Kite ' s . When Flip was caught cheating , Yuma Tsukumo intervened and Dueled them in Flip ' s place . Their combination overpowered Yuma and drastically lowered his Life Points . In an attempt to turn the Duel around Yuma managed to Summon " " , surprising Nistro and his partner as he held a " Number " card . When Dextra Summoned " Photon Papilloperative " , Yuma identified them as colleagues of Kite , with Nistro and Dextra learning that he has Dueled Kite . Yuma gave up hope when they reduced him to 100 Life Points , but Astral returned and was briefly visible to everyone watching the Duel . Dextra and Nistro identified him ( Astral ) as the " original Number " . Astral helped Yuma execute a winning move and Yuma attacked Dextra . Nistro defended her with " Bounzer Guard " , resulting in him losing instead of her . After the Duel , Nistro asked Dextra not to tell Mr . Heartland about Yuma because he wanted to defeat him himself before Kite did . After Hart Tenjo disappeared from Heartland Tower , Nistro and Dextra went to look for him via a helicopter . After finding him , Nistro blamed Yuma for kidnapping him and when he tried to take Hart back , he created a powerful energy to force Dextra and Nistro to retreat ; when they returned , Hart , Yuma and Tori disappeared . Having found out that Hart disappeared , Kite contacted Nistro and Dextra in order to find out what has happened . Nistro thought it would be best to ignore Kite , but Dextra listened to what he had to say , and then told him the area of the city where Hart was last seen . After Hart was abducted by Quinton , Nistro and Dextra managed to find Yuma in order to question him on Hart ' s whereabouts . Unfortunately for Nistro , Yuma kicked him in the crotch in order to escape , causing him immense pain ( this is cut from the English dub ) . Nistro recovered and tried to to attack Yuma again , but was stopped by Kite . After discussing about what to do , Nistro and Dextra decided to leave the job to Yuma and Kite . They then got back into their helicopter and flew away . After Kite and Yuma defeated Quattro and Trey , Hart was rushed to the hospital as he required medical care . Angered at how Mr . Heartland didn ' t prevent Hart from being hurt , Kite attempted to talk to him about the matter , but was stopped by Nistro and Dextra as he was having a meeting with Dr . Faker about the situation at hand . Nistro mocked Kite for joining up with Yuma , and questioned him on why he didn ' t reveal Yuma ' s identity to Mr . Heartland . He then stated that if Kite wouldn ' t take him out , then he would be happy to take care of the matter . On the third day of the World Duel Carnival , Nistro resigned from his job as an administrator in the contest in order to compete . Dextra later asked Nistro if he was going after Yuma . He confirmed that he intended to use his true Deck in order to defeat the original " Number " . Nistro and Dextra began collecting Heart Piece s and defeated an unspecified number of Duelists off - screen . This path led Nistro to also challenge Nelson Andrews to a Duel . The two exchanged blows with Nistro , forcing Nelson to bring out his " Dimensional Jet Iron " , and eventually , " Superdimensional Robot Galaxy Destroyer " . Nistro revealed his new ace monster , " Heroic Champion - Excalibur " , ultimately beating Nelson ' s ace . Nelson then gave one of his Heart Pieces to him and before Nistro left with Dextra , he told Yuma to make it to the finals as he wanted to fight against him . World Duel Carnival Finals . At the WDC Finals party Nistro allowed Yuma to enter despite forgetting his invitation , saving him from the two bouncers who were attempting to eject him . Nistro told them that despite his looks , Yuma is a finalist . He then turned to talk to Yuma , but he and his friends already ran to the party . Nistro witnessed Quinton and Vetrix attending the party and found them to be suspicious . Dextra confirmed this by telling him about how they were involved with Hart ' s current condition . The day of the finals , Nistro greeted Yuma at the Duel Coaster , calling the event the final showdown while urging Yuma to still enjoy himself . When Mr . Heartland explained that Spell and Trap Card s would activate from the coaster itself , even Nistro was surprised , not having known . Later , Nistro easily defeated one of the finalists with " Heroic Challenger - Spartan " and " Riryoku " . He told his opponent he was at least ten years too early to challenge him . After Yuma and Anna Kaboom are cornered by the Triad of Terror ' s " Magnet " strategy , Nistro rushed in and managed to defeat Coyote with his " Heroic Challenger - Extra Sword " . He then assisted Yuma in Xyz Summon ing his " One - Eyed Skill Gainer " and powering it up enough to defeat the Triad of Terror at the cost of losing Anna Kaboom from their team . They then entered the final area of the Duel Coaster . In this underground section , Nistro was challenged by Tricky Tommy Noble , who he defeated with " Heroic Challenger - War Hammer " . He then approached Quinton , knowing that it was him that had kidnapped Hart . He wished to take revenge as he had been humiliated when he was unable to get Hart back himself . Quinton negate d Nistro ' s first attack and Nistro told him to fight with his full strength . Quinton claimed he did not need to do that to defeat Nistro and proceeded to inflict heavy damage with more Spell and Trap Card s . He brought out " Heroic Champion - Excalibur " , but Quinton even countered that . Nistro was saved by Yuma , who used the effect of " Achacha Chanbara " to reduce the damage Nistro would have taken to zero . Quinton changed lanes after that and Yuma lead Nistro to a Trap Point that contained " The Paths of Destiny " . After Yuma had witnessed all of the other semi - final Duels , he ended up arriving at the " Desert Field " field to see that Nistro was waiting for him . By then , Nistro had recovered his Life Points back to 4000 . With Yuma only having only 100 Life Points himself , Nistro decided to restore him back to 4000 via the effect of " Heroic Gift " as he wanted to have a fair and fiery Duel with Yuma . Despite this , Yuma continued to play defensively , which annoyed Nistro as he expected an enjoyable Duel . Yuma then realized this and began to Duel up to Nistro ' s expectations . Midway through the Duel , the field switched to " Sunset Showdown " . Wishing for the Duel to be decided by a battle using their respective ace monster s , Nistro played " Xyz Xtreme ! ! " , letting him and Yuma Summon " Excalibur " and " " , respectively . Yuma increased the ATK of " Utopia " with " Double or Nothing ! " , winning him the Duel . Despite his loss , Nistro wished Yuma luck , and gave him " Excalibur " . After the Duel with Vector and Dr . Faker was concluded , he and Dextra transported Shark back to the hospital , with Nistro piloting the helicopter and Dextra administrating medical attention . He and Dextra later watched the rematch between Kite and Yuma and was excited when Yuma Summoned " Excalibur " . After Kite won , Nistro left with Dextra , commenting it was a good Duel and muttered a farewell to a sleeping Yuma . Yu - Gi - Oh ! ZEXAL II . Mythyrian Numbers War . After leaving Heartland , Nistro returned to Spartan City to become a Pro Duelist with Dextra as his manager , although he originally wanted her to join him as a Tag Partner . Nistro took the name " Nistromo the Star Voyager " ( " Star Man " in the Japanese version ) to inspire hope in children and became very popular with the citizens . After Yuma and his friends arrived in Spartan City to find another Mythyrian " Number " , Yuma noticed Nistro on an advertisement about the Pro Duelist Spartancity Tournament , which Nistro won by defeating his opponent with " Heroic Champion - Kusanagi " . Afterwards , Nistro was signing autographs where he met up with Yuma and was happy to see him . After a brief reunion , Yuma informed Nistro of why he was in Spartan City and they discussed the Mythyrian " Numbers " over lunch . Nistro and Dextra told everyone about the legend surrounding a sunken coliseum , which Yuma lamented over . Unable to sleep that night , Nistro went down to the lake on his motorbike just before Alito used several " Blast with Chain " cards to drain the lake , causing Nistro to fall into the now drained lake bed . Nistro then ventured into the temple and found Alito shortly before the latter gave him " " . Nistro was brainwashed by Alito ' s " Rank - Up - Magic Barian ' s Force " and entered a Tag Duel against Dextra and Yuma , where he quickly Summoned " Lion Heart " . With " Lion Heart " on the field , Alito manipulated Yuma ' s and Dextra ' s attacks to target " Lion Heart " , with Nistro able to use the effect of " Lion Heart " to continuously save his Life Points from being depleted by detach ing its Overlay Unit s . Eventually , Dextra used " Night Papilloperative " in an assault to eliminate the final Overlay Unit along with herself . Though Alito replenished the Overlay Units , Dextra ' s sacrifice got through to Nistro enough for him to Duel on his own , who proceeded to refuse to play " Barian ' s Force " after drawing it . He reverted to his usual strategy of attacking head - on and boosted the ATK of " Lion Heart " to successfully destroy " " . Nistro also called out to Yuma , who attacked " Lion Heart " with " Heroic Challenger - Excalibur " and defeating Alito with " Overlay Marker " due to Alito attempting to make Nistro use his " Barian ' s Force " using " Battlin ' Boxer Cheat Commissioner " . The Duel ended and Nistro was freed from Alito ' s brainwashing and gave Yuma " Lion Heart " . Nistro told Yuma he would like to help with fighting the Barian s , but Yuma told him that he needed to continue his dream of being a symbol of hope to children . The next day , Nistro held the Spartancity Tournament trophy to a crowd of fans . Barian Emperor Onslaught . After the Barian s began to invade Earth , Nistro became aware of the crisis in Heartland and went to aid Yuma . As the Seven Barian Emperors were chasing down Yuma , Nistro distracted Alito by hitting a baseball at him , which Alito caught . He affirmed he was here to block his path and started a Duel . Nistro gained an advantage with " Heroic Champion - Gandiva " , with Alito being surprised he was having trouble against a human . Enjoying the Duel , Nistro complemented Alito , telling him it had been a while since he was this pumped up . Eventually , Alito initiated a Chaos Draw alongside the other Emperors as Nistro looked on in shock . This allowed Alito to use " Rank - Up - Magic - The Seventh One " to bring out " " , which made Nistro excited by the new challenge . Although Nistro proclaimed that he will keep standing for Yuma ' s sake , Alito told Nistro to burn to cinders by his fists of malice as the monster defeated him . As his soul was sent to the Barian World , Nistro apologized to Yuma for being unable to repay his debt , but he was still pleased with the Duel overall . Nistro was revived after Nash was defeated by Yuma , appearing on the same spot where he was defeated by Alito . Later , he and Dextra watched Yuma ' s Duel against Astral with Yuma ' s friends . Manga biography . Yu - Gi - Oh ! D Team ZEXAL . In the spin - off manga " Yu - Gi - Oh ! D Team ZEXAL " , Gauche is part of the Team Duel Tournament ' s committee . Decks . Bounzer Deck . Whilst working for Mr . Heartland , Nistro uses a " Bounzer " Deck , which he replaced his original Deck with . It focuses on heavily punishing the opponent through brutish tactics . Using cards such as " Bounzer Guard " and " Photon Strike Bounzer " , he is able to disrupt his opponent ' s tactics . Xyz Heroic Deck . Nistro later uses his Xyz " Heroic " Deck . Nistro ' s primary tactic is to Xyz Summon his " Heroic Champion - Excalibur " in an attempt to perform a One Turn Kill , made easier through cards such as " Heroic Chance " . Nistro utilizes several cards to reduce the number of Overlay Unit s required to Xyz Summon , like " Heroic Challenger - Double Lance " and " Xyz Crown " . He also uses cards to punish defensive tactics such as " Heroic Challenger - Night Watchman " and " Battler ' s Cry " . During his Tag - Team Duel with Alito , Nistro gains access to " " , using " Heroic Challenger - Ambush Soldier " to easily Xyz Summon it .