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  • Kaizo
  • Duelist
DeckLIGHT Machine
Anime debutYu-Gi-Oh! SEVENS episode 001: "Let's Go! Rush Duel!"
Appears in
AnimeYu-Gi-Oh! SEVENS
Voice actors
  • Yusuke Kobayashi[1]

Kaizo (カイゾー Kaizō) is a character in the Yu-Gi-Oh! SEVENS anime. He is one of Yuga Ohdo's inventions, or "Roads", having been modified from a Goha Corporation Drone. During the Maximum arc, most of Kaizo's original data is stolen and held hostage by Nail Saionji, who challenges Yuga to retrieve it.



Full-body view of Kaizo in his robot body.

Kaizo is a green, spherical Goha Corporation Drone with a blue screen that serves as both a display and Kaizo's face. Following his modifications by Yuga Ohdo, he has a red top that resembles a bottle cap with a gold tube at the side, and blue cylindrical thrusters with white rims; the left one with some yellow plating. After he joins Goha 66, he is given new yellow thrusters, though these are later removed by Luke. Kaizo's appearance also changes subtly whenever Yuga modifies him. When Yuga modifies him to detect the longing of a man, he adds a bulb to the top and give Kaizo two red dowsing rods.[2]

Full-body view of Kaizo when it is contained in the seat of the Duel Bicycle.

After being trapped in the Duel Bicycle, Yuga eventually transfers Kaizo's data remnants into the green bike seat with a silver connection rod. He attaches a small speaker to the rod to allow Kaizo to communicate while he is trapped in the seat.

When Kaizo disguises himself as a student at Goha 6th Elementary, he wears a black wig and hangs a blue school uniform beneath him with a white shirt and a red tie. After Kaizo joins Goha 66, he is given a robot body that he operates as the head. The body is styled to appear as though it is wearing a charcoal suit with a white undershirt, maroon tie and yellow hexagonal badges on the belt and tie, with grey hands and brown shoes. Kaizo himself sits in a green hexagonal port lined with neatly styled black "hair".


Prior to its modification, Kaizo attempted to enforce the laws of Goha City on Yuga and his friends and presumably had no more personality than other Drones.[3] Following Yuga's modifications, Kaizo became subversient to him, but not unwilling to challenge him, insulting Yuga during his Rush Duel with Romin. He shows himself to be a fan of Romin, supporting her during her Rush Duel with Yuga and claiming that they would beat Yuga into a pulp, as well as siding with RoaRomin and supporting Roa's desire to gain the rights to Rush Dueling purely because Romin sided with them.[4][5] Yuga apparently considers Kaizo a failed invention because of this, much to Kaizo's dismay, though it is unclear if Yuga is being serious.[6] Notably, while Kaizo normally calls Romin with the pronoun "-chan", the fake Kaizo uses the more affectionate and childish "-tan", an early hint to its deception.[7]

However, after he is stripped from his body by Nail Saionji, the fragment of Kaizo that remains in the Duel Bicycle demonstrates a loyalty and willingness to Yuga and his friends not seen before, swimming out to sea after them in an attempt to warn them of the danger they are in.[8] It later volunteers to use up the last of its data to allow Yuga to successfully use Real-Time Rush Duel Programming and install Maximum Summoning, albeit with full confidence that Yuga would be able to retrieve its original data by defeating Nail.[9] However, due to the erasure of this data, the present Kaizo exhibits none of these traits.

Kaizo demonstrates fear when Yuga resets or modifies him, though this does not seem to have affected his personality in the manner that Yuga had intended.[4] Yuga theorizes that Kaizo is becoming more eccentric every time he modifies him.[10] He dislikes tasks or qualities applied to it that it feels are demeaning, although Romin's praise usually snaps him out of this.[11] Kaizo is resentful at being stuck in the seat of the Duel Bicycle and worries that Yuga is not seriously trying to retrieve the rest of its data, and is disheartened when Yuga places it in embarrassing positions in the blueprints for the Super Rush Robot.[12]

Due to Sebastian being behind the theft of Kaizo's original data and Sebastian's disdain of a common Drone like Kaizo, Kaizo develops a rivalry with him. Kaizo generally takes the opportunity to consistently needle Sebastian, and though they appear to settle their differences after fighting for an entire day, they still argue afterwards, particularly after Sebastian tries to gain the favor of Asana Mutsuba. Despite this, Kaizo later admits to Nail that he believed Sebastian would be all right during his Duel with Finger Chikako.

Kaizo eventually tires of the abuse he suffers at Yuga and Luke's hands and tries to have Luke's sister beat them up before discovering Goha 66 at Maximum Mountain. Empathizing with their struggle against being faceless employees of the Goha Corporation, he joins them to get revenge against Yuga and his friends, to the point that he is even willing to go against Romin. He voices a desire to modify them as he pleases and likens his Dueling strategy to corrupt business practices.


"Kaizo" is a Japanese word meaning "remodel" or "modification", referring to Yuga remodeling Kaizo from a Goha Corporation Drone. Yuga picks this name in the spur of the moment, a name that Kaizo feels is too literal.


Birth of Rush Duels[edit]

Kaizo reveals himself after Yuga's Duel with Luke.

The Goha Corporation Drone that would become Kaizo detected Yuga Ohdo attempting to install his Rush Dueling rules into his Duel Disk in the Hologram Man's chamber, entering after Gakuto Sogetsu arrived. The Drone warned Yuga, Tatsuhisa "Luke" Kamijo, Gakuto and Romin Kirishima that they would be penalized if they did not close Yuga's Duel Disk in six minutes and sixty-six seconds, but Luke used his mysterious power to deactivate it briefly. The Drone later reactivated, resisting Luke's further attempts to deactivate it, but apparently shut down when Yuga defeated the Hologram Man in a Rush Duel.[3] After the Duel, Yuga modified the Drone to obey him, a task that he described as easier than hacking his Duel Disk. He used the Drone to secretly livestream his Rush Duel with Luke, revealing its presence and sending it home after the Duel.[13]

When Yuga brought Romin to the Road Laboratory, the Drone excitedly asked for her autograph. It requested a name for Yuga to address the autograph to, so Yuga came up with "Kaizo". Yuga managed to convince Romin to Rush Duel him, and Kaizo enthusiastically gave her a Duel Disk and offered to take her guitar case for her, but Romin refused. Kaizo supported Romin throughout the Duel, demeaning Yuga constantly and trying to make him go easy on Romin. Romin was able to make a comeback and push Yuga into a corner with "Prima Guitarna of the Colorful Light" and Kaizo celebrated, but Yuga was able to make his own comeback and defeat Romin. Kaizo praised Romin despite her loss, but Yuga pulled out his tools and began to reset Kaizo, despite the Drone's protests.[4]

Kaizo showing appreciation of Nico.

Yuga later used Kaizo to help film a Rush Duel promo video, modifying him to like the video several thousand times to boost its profile. After defeating Gakuto in a Duel, Yuga modified Kaizo to help stamp Gakuto's paperwork and ease his workload.[14] Kaizo showed up out of nowhere when Luke was Dueling Bakuro Shinjitsu, expressing adoration for the bespectacled Nico and briefly scaring her away and eagerly suggesting that Romin try wearing glasses as well. Irritated by Kaizo, Romin asked Yuga to do something about Kaizo; Yuga obliged by tying Kaizo up for the remainder of the Duel.[10]

Yuga brought Kaizo with him, Romin and Gakuto to the Tahayasty Restaurant after he heard of its impending closure. They decided to investigate the A.I. Restaurant that was out-competing it, but Yuga and Gakuto were both refused entry, so Yuga decided to disguise Kaizo as a home delivery drone. Kaizo wasn't happy with the look, but perked up after being praised by Romin and successfully gained entry into the restaurant, recording everything he saw and taking pictures with several girls there. He returned to the Tahayasty Restaurant to report its findings, stating that it would prefer the A.I. Restaurant. After being subjected to some of Yuga's unsuccessful Roads, Kaizo witnessed Menzaburo Oomori's arrival and his ordering of the Tahayasty Restaurant Owner's last bowl of ramen, though it told Menzaburo that the restaurant's closure wasn't his fault as it would have closed anyway. Kaizo watched Yuga and Menzaburo's Rush Duel over the last bowl of ramen as the shopkeeper passionately prepared it, but was shocked when Luke ate it afterwards. The restaurant became a lot more popular after the Duel, and Yuga enlisted Kaizo to help with waiting tables, much to his displeasure.[11]

Kaizo is deactivated by Yuga.

Kaizo served Yuga and his friends drinks when Yuga brought Mimi Atachi to visit the Road Laboratory, though he was dismayed when Yuga called him a failed Road due to his attachment to Romin. That night, Kaizo remained dormant in the Road Laboratory as Mimi attempted to steal Yuga's notebook, only being briefly roused after Mimi was caught in the act.[6] Yuga brought Kaizo with him to investigate the disappearance of the Relic from the Hologram Man's chamber, but Kaizo was unable to find any clues. After their search, Luke was challenged to a Rush Duel by Yoshio Atachi, and throughout the Duel Kaizo did his best to keep him cool due to the warm temperatures.[15] Yuga later modified Kaizo to be capable of detecting the longing of a man, believing that it would allow him and his friends to find Gossie, but Kaizo instead detected Kan's longing to find Gossie. Yuga later deactivated Kaizo after he detected his own longing to stop Kan from pursuing Gossie any further due to Yuga realizing "Gossie" was simply the product of one of his Roads.[2]

After Romin told the boys she was leaving the Road Laboratory one night, Kaizo explained that RoaRomin had a concert that weekend and explained the band's history to Yuga and his friends, including that of Roa Kirishima, Romin's cousin. Romin gave them tickets, prompting Kaizo to asks where his ticket was. Despite not getting a ticket, Kaizo nevertheless joined Yuga, Gakuto and Luke at the concert at Seven Hells Hall, carrying the Duel Guitar that Yuga had modified for Romin. Gakuto had also brought Romin flowers, but Luke hadn't brought anything and rushed off to find something, only to scream in terror moments later. Kaizo, Yuga and Gakuto left Romin in the dressing room and went to find Luke, finding him sitting in a dark corridor and concerned for Romin's safety. Kaizo and Luke were worried to find that Romin had left her room, but the concert began before they could investigate further. Mimi joined them at the concert, taking Kaizo's spot, much to its indignation, and Roa announced his intention to Rush Duel Yuga and his friends for the rights to Rush Dueling in a three-on-three team Duel. Luke and RoaRomin's bassist, Ushiro Omaeno, Dueled first, and Kaizo and Mimi realized that he was saying his name rather than warning Luke to look behind him. Throughout the Ghost Story Duel, Kaizo was terrified by Ushiro's scary stories, winding up clutching Gakuto in fear, though Luke eventually realized Ushiro was just saying his name and defeated him, much to Kaizo's relief.[16]

Gakuto volunteered to Duel next, and Roa revealed that Romin would be Gakuto's opponent. Kaizo was relieved that Romin was safe, and once again began supporting her over Yuga, mocking him for not knowing that Romin had been spying on them, though Yuga claimed he'd known all along. Romin was hesitant during the Duel, prompting Luke to call her an underhanded spy and tell her to hurry up, much to Kaizo's fury. Kaizo decried Gakuto when he brought Romin to 900 LP, but was surprised when Romin went into a berserk hunger and began Dueling intensely, defeating Gakuto. Kaizo cheered Romin on, flying away with her after she returned to normal.[5] Kaizo also acted as an MC and referee during Yuga's Rush Duel with Roa, praising Roa and Romin while downplaying Getta Taira and Ushiro. During the Duel, Roa showed footage of the Hologram Man being disqualified from the 666th Goha Dueling Tournament where he used "Sevens Road Magician", which he had given to Yuga. Roa suggested the Hologram Man had been disqualified from the tournament due to creating "Sevens Road Magician" himself, an action Kaizo confirmed to be a violation. According to Goha Duel Rules, Yuga would be disqualified if he drew "Sevens Road Magician", and Kaizo monitored Yuga's hand as the Duel continued.[17] Yuga eventually drew "Sevens Road Magician", which Kaizo confirmed to Roa. Before Kaizo could disqualify Yuga, the Relic emerged from the ground and projected the Hologram Man, who introduced himself as Otes. Kaizo insisted that this changed nothing, but was knocked down when Yoshio entered the stage with the Newspaper Club and used as a projector to show footage of Otes's disqualification, which confirmed he had been disqualified due to being a Goha employee, and Otes himself confirmed "Sevens Road Magician" was a legal card, allowing the Rush Duel to continue. Yuga eventually defeated Roa, and Kaizo switched back to his side, praising him along with the crowd. Yuga later took Kaizo to get juice for his friends after the Duel.[18]


Kaizo faces off against the TO-3 Drones.

Yuga connected Kaizo to the Duel Bicycle and asked him to search for Luke's favorite food; Kaizo found that it was curry rice. Romin thanked Kaizo for its help, and Kaizo was so overjoyed that it raced out of the Road Laboratory. Kaizo eventually calmed down, but was then stopped by three other Goha Corporation Drones, who had detected that it was a modified drone and refused to let it pass. Kaizo transformed the Duel Bicycle into Robot Mode to intimidate the Drones, but they assumed a TO-3 combination, so Kaizo instead challenged them to a Duel.[7]

Kaizo is kidnapped by Nail Saionji.

However, as the Duel progressed, Kaizo was contacted by an unknown entity telling him to become part of it, and Kaizo tried to flee into the Duel Bicycle, but only a small part of his data was able to escape and the rest was stolen by Nail Saionji. A fake then took Kaizo's place within his body, and reactivated after a short time.[8] The other Drones were defeated, but the fake Kaizo remained unresponsive until Yuga mentioned Romin's name and it flew off; Yuga assumed Kaizo had been temporarily drained by the Robot Mode. The fake Kaizo and Yuga headed to Roa Kirishima's apartment, where Romin was cooking for Luke, meeting Luke himself on the way and bringing him with them. Luke wasn't happy to see Romin, as he was still angry over her betrayal, and the fake Kaizo acted as if it was incensed by Luke's rudeness towards Romin. Luke then smelled the curry Romin had cooked and was moved by how good it tasted; the fake Kaizo's taste sensors confirmed its taste as well. After Luke named the curry "Dragias Curry" due to the blue color, Romin tried to add spices to simulate the powerful second attack of "Dragias the Striking Dragon", but this resulted in the curry exploding directly under the fake Kaizo and flooding the apartment.[7]

Kaizo tries to warn Yuga.

The fake Kaizo arranged to lure Yuga and his friends away from Goha City, telling them of an island where the Relic would next appear, though in truth no such island existed. It took Yuga, Romin, Luke and Gakuto to the Goha Fishing Elementary, which would not return to Goha City for a month, but feigned ignorance when the ship's captain Nanami Maguro informed the kids they were on the wrong ship. The real Kaizo took control of the Duel Bicycle and left the Road Laboratory once its battery was completely charged, transforming into Robot Mode to swim after Yuga and getting trapped in one of the Goha Fishing Elementary's nets. The remains of the Duel Bicycle provoked a Duel between Maguro and Yuga, which Yuga was able to win. After the Duel, Yuga examined the Duel Bicycle and discovered the memory of Kaizo's data being stolen. As Yuga held the fake Kaizo down and learned from Maguro that the island the fake Kaizo had lured them to didn't exist, the real Kaizo used the last of its battery to warn Yuga that the A.I. in its body was a fake, and the fake escaped back to shore upon being discovered. Fortunately, Yuga had placed a transmitter into its body due to Kaizo's tendency to run off, and they took the Duel Bicycle back to shore with them, tracking Kaizo's body to the A.I. Restaurant.[8]

Once they went inside the restaurant, Yuga transferred Kaizo's data into the seat of the Duel Bicycle. After Romin Dueled and defeated Arata Arai, Luke showed him Kaizo in the bike seat and managed to learn that Arai had seen Kaizo's body go through a door.[19] Yuga and his friends were greeted by Nail, who showed them the real Kaizo's data contained within a data drive, causing the real Kaizo to tremble at the sight. Nail explained that Kaizo's data could only be retrieved if they defeated the Duelists in the Garden of Providence, but if Yuga and his friends lost six times, they would have their Duel accounts deleted.[20]

Kaizo is used by Sebastian to conceal "Sevens Road Magician".

The next day after Luke had defeated the first Duelist, Schrödinger Nekoyama, Yuga was tinkering with Kaizo at the Road Laboratory to attach a speaker to him. Romin asked Yuga what would happen to Kaizo if they couldn't retrieve his data, and Yuga admitted that he wouldn't even be able to return Kaizo to a normal Drone without it, though he suggested that he could make a new Kaizo, a suggestion that angered Kaizo.[21] That night Kaizo was charging in the middle of the room when Yuga woke up from a dream and tripped on his charge cord, begging Kaizo not to charge there. The next morning Yuga began work on the Super Rush Robot, once again worrying Kaizo as to Yuga's sincerity to finding his original data. Yuga reassured Kaizo he was making him an important part of the robot. Kaizo was initially flattered by Yuga's statement until he learned he was intended as the cooling device located in the robot's crotch and he angrily hopped outside. Kaizo then found four Comforting Harmonious Massage Chairs outside that Yuga and his friends used, and Kaizo was dragged into the Garden of Providence with Romin when the floor elevated beneath them. Yuga was challenged to a Duel by Sebastian, the A.I. that had stolen Kaizo's data, who lectured Yuga over his worth in comparison to the seat he sat on, criticizing Kaizo's fearful trembling. Yuga made a comeback against Sebastian with "Sevens Road Magician", but Sebastian used his "Gate of Thrones" Trap to return the card to Yuga's hand and hide it in Kaizo, then disguise the other cards in Yuga's hand as duplicates of Kaizo, challenging Yuga to find the real one. Yuga's friends hesitatingly spoke up in support of Kaizo, but Yuga was able to successfully find him, and Yuga's friends all admitted that Kaizo could be a pain, but they still loved him. Yuga then defeated Sebastian, returning them to the surface. That evening Kaizo asked if they truly loved him, and they assured him they did. Yuga then revealed that he had altered his blueprints to place Kaizo as a deodorizer in the posterior of the Super Rush Robot, much to Kaizo's exasperation.[12]

Yuga took Kaizo with him to the A.I. Restaurant when Luke treated him and his friends to a meal. Luke was kidnapped from the room, and Yuga and the others were trapped in the room by Luke's wristwatch causing the technology to malfunction, which also caused Kaizo some discomfort. Yuga was able to use Kaizo to lever open the door and get to Luke, and after Luke defeated Arai, Yuga was able to learn the location of the Gate of Providence, the entrance to Nail's haven.[22] Nail used the original data of Kaizo to replicate the code of Rush Dueling, which allowed him to install Maximum Summoning. Yuga took Kaizo with him to the Gate, giving him to Romin to hold again during his Rush Duel with Nail, but Nail's Maximum Summon defeated Yuga.[23] Kaizo was sent back to the surface with Yuga, Gakuto, Romin and Luke, and Yuga left him in the Road Laboratory the next day when he went for a walk.[24]

Yuga took Kaizo with him to the Goha Duel Museum after he resolved to install Maximum Summoning himself, giving him to Romin to hold again while he Dueled Nail. As Yuga initiated the Real-Time Rush Duel Programming to change his friends' Duel ID cards, the process became too much for his Duel Disk, so Kaizo hopped out of Romin's arms and gestured that Yuga should use his processing power to complete the installation, though doing so would completely erase what was left of Kaizo. Yuga was reluctant to do so until Kaizo reminded him that he would be able to retrieve Kaizo's original data by defeating Nail, and he plugged him into his Duel Disk to complete the installation and successfully Maximum Summon "Super Magitek Deity Magnum Over Road", consuming the remnants of Kaizo's data.[9] The original Kaizo was restored and returned to Yuga after he defeated Nail, with no apparent memory of his ordeal.[25]

Goha 6th Elementary[edit]

At some point, Kaizo was told of what had been done to him.[26] Kaizo alerted Yuga, Romin and Gakuto to Luke's takeover of the Student Council Room for his new Luke Club, which Kaizo believed to be a sign that Luke was up to no good again. Kaizo and Yuga watched Luke unsuccessfully attempt to gather members for his club throughout the day, and they later went and eavesdropped on him Dueling himself, which Kaizo took as evidence that he'd snapped.[27]

Kaizo arguing with Sebastian.

Luke received an invitation to the Rush Duel Tournament, and he decided to take the Rush Duel Club on a Rush Duel Training Camp. In order to do so, the Club required an advisor, and Sebastian was sent to fill the position, much to Kaizo's anger given that Sebastian had kidnapped him. Kaizo tried bossing Sebastian around at the camp, though Yuga asked him not to fight with Sebastian. Kaizo supported Romin during Luke's intense training, which Luke was trying to exploit to hone Romin's awakenings. That night, Romin argued over the television remote with Sushiko Maki and they Dueled to see who would claim it. Kaizo supported Romin, explaining her Dueling style to Menzaburo. During the Duel, it was revealed that Princess G would be on the show Sushiko wanted to watch, snapping Romin out of her rage and allowing Sushiko to defeat her, much to Kaizo's disappointment.[26] On the third day of the camp, Kaizo, Yuga, Romin, Gakuto and Luke were trapped in the cabin after a massive trench was dug around it, and to Kaizo's shock, Yuga dropped him into the trench to test the depth; Kaizo subsequently attacked Yuga angrily. After they learned that they had no food due to Luke eating it all the previous night, Kaizo gloated that this was what they got for putting Luke in charge. Yuga asked Kaizo to get help from Sebastian, but Kaizo refused to lower himself to ask his rival until Romin asked him and he immediately jetted off. He found Sebastian giving the camp manager a massage and mocked him for his claim that the manager was someone of authority before arrogantly telling him to come with him. Sebastian's dismissal of Kaizo soon led to the two Drones fighting, Kaizo's mission forgotten, and by the evening Kaizo and Sebastian had battered each other into exhaustion. Kaizo admitted that Sebastian wasn't such a bad guy, and they watched the sunset with the manager before Kaizo remembered that he'd left the kids behind at the cabin.[28]

After the training camp, Gakuto explained that Ranze and Rinnosuke hadn't come to the camp because they were on holiday, and it was revealed that Luke had instead entered the Rush Duel Club into the the "Trumpet Duet Tournament", so the club decided to ask the Concert Band Club for help. They were attacked by karakuri puppets when they arrived at the Concert Band Clubroom, and Kaizo and Sebastian were swatted into the wall with ease after Sebastian tried to protect them, before the club president, Luke's sister Tiger, returned. Tiger eventually agreed to help them if Yuga could defeat her in a Rush Duel (after blowing Luke and Kaizo into the wall again). Kaizo was initially confused by Tiger's use of the effects of her "Trumpetonfa the Stabbing Music Maiden" to increase their ATK, but later realized that she was using their effects to send monsters to the Graveyard. Kaizo was also confused by Tiger's claims of breath being important to martial arts and asked Sebastian to translate. Tiger was able to put herself in a position to win, but to Kaizo's relief she failed to send the correct card for the effect of her "Nunchuclarinet the Whirling Music Maiden", allowing Yuga to remain in the Duel. Yuga was able to defeat Tiger, and she agreed to train them in wind instruments, having Kaizo practice breathing with the rest of the Rush Duel Club.[29]

Kaizo isn't happy when Asana Mutsuba claims to dislike modification.

Kaizo accompanied the Rush Duel Club to the Trumpet Duet Tournament, which was held in a dilapidated building in the woods and he suggested Sebastian had sent them to the wrong location. When they found the tournament room however, it was full of Goha 6th Elementary students Rush Dueling, who mistook Kaizo for a Goha Corporation Drone, a comparison that irritated Kaizo. After it was revealed the tournament was really a Dark Rush Duel Tournament, Luke ended up Dueling the tournament organizer, Jango Arisugawa, over making him waste his time practicing with an instrument. Jango's use of an ant Deck prompted Yuga and Romin to accidentally make ant puns, much to Kaizo and Gakuto's displeasure, and even Gakuto started doing so. Luke eventually defeated Jango, but afterwards the building began to shake.[30] The students had been discovered by the Heavy Cavalry Duel Club, led by Asana Mutsuba, who wanted to eliminate Rush Dueling for being a modification, something that angered Kaizo given that his name stemmed from the word and he expressed his displeasure, only to be further infuriated when not only did Asana claim to hate Drones as well, but Sebastian tried to flatter Asana. Yuga challenged Asana to a Rush Duel to allow the Goha 6th students to Rush Duel freely, and Kaizo cheered for Yuga during the Duel, but Asana defeated Yuga with a Maximum Summon. As the condition for her victory, Yuga and the others were forced to transfer to Goha 6th Elementary.[31]

Kaizo informing Nail of the events at Goha 6th Elementary.

As Drones were not permitted at Goha 6th Elementary, Kaizo and Sebastian were tied up, Kaizo taking the opportunity to scribble on Sebastian's face in revenge for his support of Asana. Yuga later had Kaizo deliver various Roads to students of Goha 6th Elementary to help them, though Kaizo only acted to help the female students, later reporting back to Yuga. Kaizo watched the ensuing Rush Duel between Gakuto and Galient Tazaki, and after the Duel ended, Asana accused Yuga of spreading suspicious devices across the school. Kaizo indignantly revealed himself and claimed that the Roads (himself included) had been nothing but helpful, but Asana sent him and Sebastian with Yuga and his friends to the Abandoned Dorm.[32] Once they were there, Yuga created Roads that he disguised as Kaizo and Sebastian and sent them to ask Nail Saionji where Asana had got her Maximum Monsters and to borrow "Yggdrago the Heavenly Emperor Dragon Tree" from him.[33][34] As they evaded the Heavy Cavalry Duel Club, Kaizo began arguing with Sebastian again, accusing him of being a traitor and suggesting a race to get to Nail first. Kaizo distracted Sebastian to get a head start, but it began raining, forcing Kaizo to take shelter, and he sent a message to Sebastian telling him about the cave he was sheltering in. As they dried by a fire, Finger Chikako burrowed out of the ground, and Kaizo was taken with her cute appearance, though surprised when she challenged them to a Duel, calling them flies that she couldn't allow to escape. Kaizo was eager to Duel her, but Sebastian contacted him and asked to be allowed to Duel while Kaizo went to Nail, as Kaizo would be able to get there faster, informing him of a hidden shortcut to Nail's Haven. He asked Kaizo to promise to do this for him, and Kaizo agreed as long as Sebastian promised to win the Duel. Sebastian and Kaizo antagonized one another during the first turn of the Duel to divert Chikako's attention, Chikako's eventual statement that Kaizo should be quiet giving him the opportunity to sneak away. Kaizo succeeded in reaching Nail, informing him of the situation and assuring him that Sebastian would likely arrive soon.[34]

Nail informed Kaizo that he had not given Asana her Maximum, enclosing a message within him for Yuga that suggested he look for the cache of Duel Disks buried on the outskirts of Goha City and also giving Kaizo "Yggdrago" without any protest despite Kaizo begging.[35][34] Nail told Kaizo to return to Yuga with Hunt Goto, who brought water for Yuga and the others. On the way back, they passed by Sebastian's damaged body. Kaizo and Hunt eventually found Yuga, Romin, Luke, Gakuto, Ranze and Rinnosuke in the mine, where Romin was about to drink mine water, and Kaizo tried to claim credit for the rescue, though to his annoyance Romin thanked Hunt instead. Kaizo showed Yuga Nail's message, and after it had finished playing, Hunt was able to find an entrance to underground hallways.[35] When they arrived at the Heavy Cavalry Colosseum, Chevelle Kayama and Trapigeon were waiting for them with an exhausted Galient, who challenged them to a Duel to prevent them passing, but passed out and Ranze took his place, Dueling Rinnosuke, who ended their Duel in a DRAW.[36] As there had been no victor, Chevelle insisted on another Duel, which Luke accepted, though he instead Dueled Trapigeon, something Kaizo found nonsensical, though Trapigeon did indeed make the decisions during the Duel. Luke eventually defeated Trapigeon, allowing them to pass.[37]

Kaizo and the kids finally reached the mine, where Hunt quickly uncovered a prototype Duel Disk. After Yuga and Hunt dug up enough prototype Duel Disks for Yuga to extract three Duel ID cards and add them to his Deck, Gakuto and Yuga discussed how Asana had likely created her own Maximum with Duel ID cards from the mine. Asana and the Heavy Cavalry Duel Club then arrived and she confirmed Yuga's theory, informing them that most of the Duel ID cards in the Duel Disks couldn't be used due to their age. Asana challenged Yuga to another Duel, agreeing to allow the students of Goha 6th Elementary to Rush Duel freely if she lost as she had when they last Dueled, but with the condition that Rush Dueling would be banned at all elementary schools in Goha City if she won. Kaizo cheered Yuga on throughout the Duel due to his dislike of Asana, but Yuga was barely able to fend off "Wurm Ex-Cavator". To Kaizo's shock, Asana revealed that she knew Yuga had sent him to get "Yggdrago the Heavenly Emperor Dragon Tree" against her and urged Yuga to Summon it, though Yuga confirmed that he'd added the three Duel ID cards to his Deck and was gambling on being able to recreate "Super Magitek Deity Magnum Over Road", something that annoyed Kaizo after the effort he'd gone through to get "Yggdrago". Yuga succeeded in drawing and Maximum Summoning "Magnum Over Road", powered it up and attacked "Wurm Ex-Cavator", but Asana made the ATK of their Maximum Monsters equal and as they destroyed one another Asana and Yuga's Maximum cards began to disintegrate; Gakuto ruling that whoever's Maximum was destroyed first would take the ATK of the other.[34] Both Maximum Monsters disintegrated at the same time, as Kaizo conveyed to the onlookers, and Yuga and Asana continued their Duel, with Asana revealing that they were trying to crush Rush Duels so that the Goha Corporation would remanufacture the parts for their Heavy Cavalry. Yuga was able to defeat Asana and reveal to her that R0, the Mobile Duel Device her family had created, had been modified during its construction, convincing her that modifications were acceptable. Kaizo tried to befriend Asana as a result, but she continued to rebuff him as she still detested Drones for putting her family's company out of business.[38]

Team Battle Royal[edit]

Due to Asana's defeat, Yuga and his friends were allowed to return to Goha 7th Elementary. Romin learned that Princess G had been fired by the Goha Corporation and was depressed by the news, much to Kaizo's own sadness. As Princess G had been fired for supporting Rush Dueling, Romin decided to quit Rush Dueling and challenged Yuga to her last Rush Duel, despite Kaizo's protests. Kaizo worried over Romin throughout the Duel despite Romin rebuffing his, Luke and Gakuto's support for her and was horrified when Romin Summoned the weak "D". Despite Kaizo's fears, "CAN:D" actually allowed Romin to bring out both "Prima Guitarna of the Colorful Light" and "Esperaid of the Smashing Light", a combination that Kaizo praised in addition to Romin's new outlook, which allowed her to defeat Yuga. After the Duel, Kaizo tried to congratulates Romin but she brushed him aside to look into a room where music had been playing from and eventually confirmed that she wasn't quitting Rush Dueling after all.[39]

Ranze quit the Student Council, leaving the position open for Luke, the runner-up of the last election to assume her position. Kaizo leapt at the chance to assume a position of power and acted as Luke's aide as he had the students paint the school the color of "Dragias the Striking Dragon", even dunking himself into blue paint. After school they flaunted they power to Yuga, Romin and Gakuto, but were yelled into the wall by Tiger to put them in their place. Kaizo was badly damaged by the impact and began to shut down, mistaking Sweets Kakoko's announcement of the Goha Rush Duel Team Battle Royal as Finger Chikako announcing it.[40]

After Yuga repaired Kaizo, Kaizo tired of the abuse he'd been suffering at the kids' hands and left for Maximum Mountain, having become aware that Tiger was training there and hoping he could convince her to beat up Yuga and his friends. Instead, Kaizo's spirit of adventure detected a significant reading in Maximum Mountain, where he found the members of Goha 66 excavating. They exchanged stories, and Kaizo learned that Goha 66 desired to retire from the Goha Corporation by taking control of it to ensure they were remembered as more than faceless employees, a desire that Kaizo found moving. Embracing the leader of Goha 66 he pledged his loyalty to them and was given a robot body and Deck for his service. Aware that Roa had caused Getta and Ushiro to abandon him during the Goha Rush Duel Team Battle Royal, Kaizo sought them out and told them of his own abuse, recruiting him to his side. Once he had, they went to the Abandoned Dorm to lay in wait for Yuga, Luke and his friends.[41]

Eventually Luke, Romin, Gakuto, Menzaburo, Sushiko and Nick arrived at the Abandoned Dorm, and Kaizo made a grand entrance between Getta and Ushiro, though he was initially dismissed as malfunctioning until Getta and Ushiro supported him. Kaizo declared his intentions to modify them all as revenge for what they had done to him and challenged Luke to a Rush Duel. Kaizo's Trap Cards were able to fend off Luke's attacks with ease, and on his next turn he told them all why he had joined Goha 66 before bringing out "Shining Black Corporate King Arktalk the Corrupt" to recover his Traps and assemble three strong monsters. Destroying "Dragias the Striking Dragon", he attacked with the intention to defeat Luke, though Luke was able to barely survive with "Dragon's Tenacity". On his next turn Luke took advantage of Kaizo's well-set field with the effect of "Stock Buster the Terrorstriking Dragon" to lower the ATK of his monsters, before Summoning "Dragonic Slayer" to destroy one of Kaizo's Traps. Kaizo hoped he would still have a chance if Luke only destroyed "Attack Salary Cut" instead of "Battle Demotion", but to his dismay Luke successfully chose "Battle Demotion" and defeated Kaizo. After the Duel, Kaizo abandoned his body and tried to sneak away, but he was spotted by Nick and captured by Luke's power after he tried to flee. Luke brought Kaizo with him into Maximum Mountain, where Tiger and the Heavy Cavalry Duel Club had defeated the members of Goha 66, and Luke used Kaizo's confession switch to force him to reveal Goha 66's plan to everyone present.[41] Events stalled when Tiger challenged Asana to a Duel, and after Asana defeated her, Tiger yelled Luke into a wall, shattering it to reveal the supposed main server, but Kaizo noted that the server was too small to contain all the Dueling data it was said to.[42]


Original Deck[edit]

These cards can briefly be seen when Kaizo Duels the three Goha Corporation Drones in episode 14.

LIGHT Machine Deck[edit]

When working under Goha 66, Kaizo is given a LIGHT Machine Deck composed of monsters reflecting the corporate lifestyle of the Goha Corporation. His Deck focuses around the manipulation of costs, particularly his LP; his Trap Cards all require an LP cost to debilitate his opponent's monsters while the effect of "Shining Black Corporate King Arktalk the Corrupt" can retrieve said Traps at a discard cost.


Opponent Episode(s) Outcome
Three Goha Corporation Drones 14 Win
Tatsuhisa "Luke" Kamijo 47 Lose

Other appearances[edit]


  1. NeoArkadia (March 6, 2020). "The Organization | [SEVENS] Various Pieces of Information Revealed". YGOrganization. Retrieved March 21, 2020.
  2. a b Yu-Gi-Oh! SEVENS episode 9: "Wonderful Jurassic"
  3. a b Yu-Gi-Oh! SEVENS episode 1: "Let's Go! Rush Duel!"
  4. a b c Yu-Gi-Oh! SEVENS episode 3: "Romin's Secret"
  5. a b Yu-Gi-Oh! SEVENS episode 11: "No More Holding Back!"
  6. a b Yu-Gi-Oh! SEVENS episode 7: "The Transfer Student Is an Elementary Schooler?"
  7. a b c Yu-Gi-Oh! SEVENS episode 14: "Romin's Kitchen"
  8. a b c Yu-Gi-Oh! SEVENS episode 15: "Setting Sail! Goha Fisheries Elementary"
  9. a b Yu-Gi-Oh! SEVENS episode 25: "Dreams, Courage, and Friendship"
  10. a b Yu-Gi-Oh! SEVENS episode 5: "Luke, a Manly Battle"
  11. a b Yu-Gi-Oh! SEVENS episode 6: "I Beg Your Noodle! Ramen Duel!"
  12. a b Yu-Gi-Oh! SEVENS episode 19: "The One Who Is a Throne"
  13. Yu-Gi-Oh! SEVENS episode 2: "The Man Who Possesses a Demon"
  14. Yu-Gi-Oh! SEVENS episode 4: "Farewell, Student Council President!"
  15. Yu-Gi-Oh! SEVENS episode 8: "Post-Apocalypse and Napolitan"
  16. Yu-Gi-Oh! SEVENS episode 10: "A Terrifying Ghost Story Duel"
  17. Yu-Gi-Oh! SEVENS episode 12: "The Forbidden Ace"
  18. Yu-Gi-Oh! SEVENS episode 13: "Another King"
  19. Yu-Gi-Oh! SEVENS episode 16: "The Man Who Washes Duels"
  20. Yu-Gi-Oh! SEVENS episode 17: "The Cat in the Garden of Providence"
  21. Yu-Gi-Oh! SEVENS episode 18: "Sorry, Gett-A Chance"
  22. Yu-Gi-Oh! SEVENS episode 22: "The Sealed Devil"
  23. Yu-Gi-Oh! SEVENS episode 23: "What Lies Beyond Providence"
  24. Yu-Gi-Oh! SEVENS episode 24: "Resolve"
  25. Yu-Gi-Oh! SEVENS episode 26: "Maximum Duel!"
  26. a b Yu-Gi-Oh! SEVENS episode 28: "Training Camp! Sushi Duel"
  27. Yu-Gi-Oh! SEVENS episode 27: "The Luke Club Is Born!"
  28. Yu-Gi-Oh! SEVENS episode 29: "Galient Digging"
  29. Yu-Gi-Oh! SEVENS episode 30: "In Battle, A Tiger's Breathing"
  30. Yu-Gi-Oh! SEVENS episode 31: "Rebelli-Ant Is Mine"
  31. Yu-Gi-Oh! SEVENS episode 32: "The Lady Who Loved Heavy Cavalry"
  32. Yu-Gi-Oh! SEVENS episode 33: "Goha 6th Elementary School"
  33. Yu-Gi-Oh! SEVENS episode 34: "The Shiatsu Nether-Empire Strikes Back"
  34. a b c d Yu-Gi-Oh! SEVENS episode 38: "Unearth the Maximum!"
  35. a b Yu-Gi-Oh! SEVENS episode 35: "Sound! Gohanium"
  36. Yu-Gi-Oh! SEVENS episode 36: "Enlightenment ♡ Ranze Eyes"
  37. Yu-Gi-Oh! SEVENS episode 37: "Coo-Coo-Luke-Coo"
  38. Yu-Gi-Oh! SEVENS episode 39: "Bring it Back! Mutsuba's Pride!"
  39. Yu-Gi-Oh! SEVENS episode 40: "Give Me Jam ♪"
  40. Yu-Gi-Oh! SEVENS episode 41: "I'll Yameruler the Sogetsu Style"
  41. a b Yu-Gi-Oh! SEVENS episode 47: "The Employee's Counterattack"
  42. Yu-Gi-Oh! SEVENS episode 48: "Clash of Secret Techniques!"