General Reycom and Hosokawa is an easygoing Mamodo whose spells revolve around ice. He is the first Mamodo that Zatch encounters in the tournament as well as the first competitor he eliminates. Reycom is voiced by
Motoko Kumai in the Japanese version, and
Debi Mae West in the English dub. Reycom's partner is , a disgruntled deliveryman. Around the time he was laid off work, Hosokawa discovered Reycom who tempted him with the promise of getting rich and was ecstatic over his powers. He learns about Zatch's upbringing and confronts him, putting Kiyo on the fore of the Mamodo tournament for the first time. Reycom enjoys the abject treatment from Hosokawa, claiming that this arduous dynamic makes him stronger. The anime significantly expands Hosokawa's background as an unforgiving criminal who capitalizes on Reycom's spells by robbing banks and forward his greed, borrowing from a separate minor character that Zatch and Kiyo encounter early in the manga. Hosokawa is voiced by
Ken Yamaguchi in the Japanese version, and Phil Hayes in the English dub.
Hyde and Eido Kubozuka is a level-headed Mamodo and the first opponent that Zatch encounters in the anime's chronology. His spells are based on wind which also allow him to go airborne. Hyde challenges Zatch twice more but is overmatched each time and runs away. By whom or how Hyde is eliminated is unknown. The only reference to Hyde in the manga is during the battle between Zatch and Clear Note. Hyde is voiced by
Megumi Urawa in the Japanese version, and
Michelle Ruff in the English dub. Hyde's partner is , a lustful and impulsive skateboarder. Eido refuses to take the Mamodo battles seriously and instead uses Hyde's spells to steal food and merchandise, and to get the attention of attractive girls, all to Hyde's annoyance. After Kiyo stops him from harassing Suzy, Eido makes a plan to defeat Zatch by kidnapping Suzy and some of
Kiyo's classmates, but Kiyo and Zatch also derail this attempt. Hyde defends Eido against an attack by Zatch, ameliorating an otherwise fragile relationship between them both. Eido is voiced by Hiroshi Kamiya in the Japanese version, and
Robbie Rist in the English dub.
Gofure and Renji resembles a vicious wolf. He first appears as an innocent lost puppy; however, this is revealed to be a disguise due to one spell. Another spell makes him fire a shower of
stalactites. Gofure meets Zatch who takes him in as a friend, candidly unaware that he is a hostile Mamodo. Gofure then launches his assault on Zatch inside Kiyo's house but is ousted by Brago. Gofure is voiced by
Daisuke Ono in the Japanese version, and
Steve Blum in the English dub. Gofure's partner is , who sees pure entertainment in the Mamodo tournament. Renji is voiced by Yukihiro Misono in the Japanese version, and
Dave Wittenberg in the English dub.
Kolulu and Lori Kolulu, or in the Japanese release, is a dovish Mamodo. For her spells, she temporarily grows into a pernicious and berserk monster, overriding her docile personality, and sprouts steel claws on her fingers. Kolulu initially refused to participate in the Mamodo tournament, so her violent alter ego was ingrained to force her into the fights. Kolulu is eliminated by Zatch on her request. She becomes a major factor shaping Zatch's motivation to be a "kind king". Kolulu is voiced by
Hōko Kuwashima in the Japanese version, and
Kate Higgins in the English dub. Kolulu's partner is
Lori, known as in the original, a smart teenage girl who is constantly home alone due to her parents being away. Lori mistakes Kolulu for an
abandoned child and adopts her as a sister. She then accidentally activates Kolulu's alternate form who nearly injures her. Terrified of this, Lori tries to avoid conjuring the spell again but does so to prevent Kolulu from being run over by a vehicle. This catches Kiyo and Zatch's attention, and they engage the pair in combat unaware that Kolulu and the vicious monster are one and the same until Lori tearfully mentions Kolulu's name. In the anime, Lori makes a cameo on a later episode in which she gives Zatch words of advice prior to his fight with Rops. Lori is voiced by
Yuka Imai in the Japanese version, and
Philece Sampler in the English dub.
Eshros and Shin Akiyama is a cocky Mamodo with the singular focus of earning the crown of the Mamodo world. His powers are based on
earth, with one spell summoning an enormous mud serpent. The marks on his face change with his emotional expressions. Zatch and Kiyo misidentify him as an ordinary boy until they overhear his plan to cause mayhem, including destroying a schoolyard. Zatch prevents Eshros from executing his plan, eliminating him by
technicality. The encounter with Eshros frames Zatch's perspective of
good and bad Mamodo. Eshros is voiced by
Yuki Kaida in the Japanese version, and
Scott Menville in the English dub. Eshros' partner is , a burlesque middle-aged adult. In spite of his muscular build, he is gentle and compassionate, always taking Eshros for granted even as he is clandestinely manipulating him. Shin befriends Zatch when he frightens off Naomi, and Kiyo confuses him for a Mamodo. Eshros beguiles a reluctant Shin into destroying the school where he was picked on in his youth, and Shin times it on a Saturday to avoid
casualties. During the battle against Zatch, it is revealed that Shin is fulfilling his mother's deathbed wish for him to be a stronger person by heart, which Eshros has been exploiting for his own nefarious resolve. However, Zatch convinces Shin that he is a good person and not Eshros, pressing Shin into spurning his Mamodo. Shin is voiced by
Nobuo Tobita in the Japanese version, and
Steve Blum in the English dub.
Maruss and Rembrant is a prideful and lavish Mamodo, as well as Tia's old best friend. His spells produce a multitude of
chains and maces. Back in the Mamodo world, he was a dear and caring person, but he becomes cruel, bad-tempered, sadistic, and heartless in the tournament. When Tia met him on Earth, Maruss proclaimed himself an opponent and severed his friendship with her. He immediately attacked her, but she fled to safety. Since then, Maruss makes Tia his prime target and pursues her relentlessly. During Megumi's concert, Maruss nearly defeats Tia, but Zatch intervenes and ultimately eliminates him, in part because Tia and Megumi also render assistance. Maruss is voiced by
Junko Takeuchi in the Japanese version, and
Joshua Seth in the English dub. Maruss' partner is , who is deeply loyal to Maruss and helps him chase Tia by
tracking Megumi's
concert stops. After Maruss is defeated, Rembrant runs off. Rembrant is voiced by Masayuki Nakata in the Japanese version, and
Roger Rose in the English dub.
Robnos and Ruku is a condescending Mamodo resembling an
android with a
hemispherical helmet. For his spells, he attacks by firing a laser beam from his hand, and he can split into two copies each with half the usual amount of power. Robnos tricks Zatch and Kiyo into battling him by falsely claiming to have kidnapped Suzy. He picks a
cold warehouse as the location to give himself an edge over Zatch, but Kiyo makes an improvisatory move that allows Zatch to eliminate him. In the anime, Robnos (not Tia) is the first to alert Zatch and Kiyo of Zeno. Robnos is voiced by
Konami Yoshida in the Japanese version, and
Colleen O'Shaughnessey in the English dub. Robnos' partner is , a browbeat man in a
parka. Ruku is voiced by
Tetsuo Kanao in the Japanese version, and
Wally Wingert in the English dub.
Baltro and Steng is a complaisant Mamodo who hides in an oversized metal armor for his own expediency. His spells revolve around the use of flowers to
telekinetically move metal objects; this allows him to also control minion "ghost knights", or empty
plate armors with flower implants. He can also propel his armor suit by the same means. Under Zeno's guise, Baltro sent his ghost knights to abduct Seitaro to draw Zatch into a battle with him. When Zatch destroys the armor, Baltro retreats but is eliminated by Zeno for his falter. Baltro is voiced by
Kiyoyuki Yanada in the Japanese version, and Phil Hayes in the English dub. Baltro's partner is , an English former boxer who takes up residence inside a forlorn castle and pillages surrounding settlements of their food and money, as well as capturing and enslaving villagers who resist him. Among the people he had taken are Kory's parents. Steng was also contracted by Zeno to kidnap Seitaro as part of his elaborate scheme to eliminate Zatch. Steng is voiced by
Kazuki Yao in the Japanese version, and David Rasner in the English dub.
Yopopo and Djem is an energetic and free-spirited Mamodo whose spells are based on the concept of music. Yopopo wears a tight green costume and a cap with a feather. He only talks by saying his own name, as well as sing and prance out of habit. The melodies he makes draw the attention of Kikuropu, who subsequently tosses him out of the tournament. Yopopo is voiced by
Hiroko Emori in the Japanese release, and
Dave Mallow in the English dub. Yopopo's partner is , a flinty tween girl who lives on the English coast. Djem is annoyed at Yopopo's prancing and often pushes him out of her leisure activities. She met Yopopo one month prior to the story when her parents welcomed him into the family. Djem tried without success to teach Yopopo the
human language. Later, Kikuropu and British Gentleman invaded Djem's home and terrorized her family before Yopopo repelled them. Djem since faults Yopopo's presence for drawing her attackers and has been gradually distancing herself from him, heedless of the fact that Yopopo is trying to attract Kikuropu with his incessant singing and avenge her. When Yopopo is ousted, he utters "Friend" to a sobbing Djem as she lovingly embraces him for his final moments on Earth. Djem is voiced by Haruhi Terada in the Japanese release, and
Dorothy Elias-Fahn in the English dub.
Kikuropu and British Gentleman is a large, grotesque Mamodo with a heavily
crustaceous exoskeleton. His spells include sprouting
pincers and
stretching his hands outward at his targets. Kikuropu heard Yopopo's singing and attacked him and Djem's family. Yopopo attempts to counter Kikuropu on his own, but Kikuropu outmatches him until Djem, Zatch, and Kiyo arrive. Zatch uses
Bao Zakeruga for the first time on Kikuropu, causing his fortified skin to
molt and enabling Yopopo to eliminate him. Kikuropu is voiced by Hitoshi Bifu in the Japanese version, and
Dave Mallow in the English dub. Kikuropu's partner is , a wanton man whose real name is never divulged. He seeks to battle others for his own gratification and had menaced Djem's family for that reason. British Gentleman is voiced by
Issei Futamata in the Japanese version, and
Jonathan Fahn in the English dub.
Rops and Apollo Genesis resembles a
ladybug. His spells involve ropes and chains reeling out of his body which are strong enough to lift objects bigger than himself. Rops mostly takes a position of humility in the tournament, refusing to eliminate his foes but instead leaving them in a mortifying state of judicious defeat. Kiyo witnesses Rops preventing an oncoming car from hitting a boy; in the anime, Rops saves Suzy from the same fate. Rops gains a newfound valor to become king that represents
liberty during a subsequent battle against Zatch that ultimately culminates in a stalemate. Rops is eliminated by Zeno in a harrowing brawl at
Holland. Rops is voiced by
Mika Kanai in the Japanese version, and
Michelle Ruff in the English dub. Rops' partner is , a mellow and patrician heir to a proliferating American corporation who travels the world to find as much joy as he can before taking the reins as CEO. How Apollo came across Rops varies between the manga and anime: in the first, Apollo spots Rops riding a raft with meager provisions; while in the second, Apollo meets a group of children nurturing the Mamodo, who then helps Apollo get past a
border barrier to escape an
isolationist country. Regardless, both Apollo and Rops happily navigate the world with each other as deep-seated companions. Apollo is able to determine that Kiyo has a Mamodo by asking what color Zatch's book is and requests a battle with the two. After Rops' demise, Apollo accepts his promotion, and he uses his company's resources to assist Zatch and his friends throughout the remainder of the series, such as safely ferrying Zofis' hostages back to their homes. Apollo is voiced by
Toshihiko Seki in the Japanese version, and
Michael Lindsay in the English dub.
Danny and Mr. Goldo is a pithy pubescent Mamodo. He has only one spell, which instantly heals his injuries, but he makes up for this by physically fighting his opponents. Although he has a rough first encounter with Zatch, they both share a rapport. However, their friendship is cut tragically short when Zatch is forced to save a historic statuette bound for a museum, ousting Danny from the tournament in the process. Danny is voiced by
Kappei Yamaguchi in the Japanese version, and
Yuri Lowenthal in the English dub. Danny's partner is , a grouchy elderly man. He is assigned to transport the statuette to a museum and treats Danny as a deferential bodyguard, always calling him "
Danny Boy" to his exacerbation. While delivering the artifact at the museum, Goldo sends Danny to buy food and gets robbed of the package. As Danny confronts the thieves, Goldo is threatened by their ringleader before Kiyo saves him. As Danny returns to the Mamodo world, Goldo heals him for the final time and expresses his heartful appreciation by dropping the "boy" label. Goldo is voiced by
Iemasa Kayumi in the Japanese version, and
Dave Mallow in the English dub.
Purio and Lupa Purio, known as in the Japanese release, is a vain and boisterous Mamodo who likes using his regal front to mask his predominately weak facet. His spells involve spewing chemical-like substances from his mouth, with one paralyzing his foes for a short time. Purio's overall strategy is to bide his time in the tournament and wait until only one Mamodo is left to challenge. He is introduced in the series collaborating with Zoboron, and they both test their teamwork against Zatch and Kiyo, but Purio retreats when Zatch and Tia defeat Zoboron. After that, he tries to vie for other Mamodo's allegiances, with marginal results in his favor. In the final leg of the tournament, Purio befriends Kanchomé but is eliminated along with Kanchomé by Clear Note. He places 8th on the tournament. Purio is voiced by Michiru Yamizaki in the Japanese version, and
Sam Riegel in the English dub. Purio's partner is , a woman sporting a large
afro and a shriveled face. Lupa came to meet Purio at the gravesite of her late son, who had died from a heart defect. She treats Purio as her own, doing whatever possible to protect him from their opponents and going so far as bending to his selfish requests. Lupa is voiced by Chihiro Sakurai in the Japanese version, and
Dorothy Elias-Fahn in the English dub.
Zoboron and Hige is a mute Mamodo resembling a
Komodo dragon. For her spells, she fires from her mouth energy spheres that are sluggish but destructive. Zoboron confronted Purio at a tundra and following a brief scuffle, the two Mamodo allied with one another. Later on, Zoboron and Purio nearly defeat Zatch, but Tia saves him and helps eliminate Zoboron. The English adaptation of the manga and anime incorrectly casts Zoboron as male. Zoboron's groans in the anime's English dub are provided by
Roger Rose. Zoboron's partner is , a plump and arrogant man in an Egyptian tunic. Both Hige and Lupa train with each other by their Mamodo's side and together go head-to-head against Zatch and Kiyo. However, when Tia and Megumi enter the fight, Hige quarrels with Lupa, unwittingly opening a division that results in his Mamodo's demise. Hige is voiced by
Kōji Ishii in the Japanese version, and also by
Roger Rose in the English dub.
Vincent Bari and Gustav is an embittered and fomenting Mamodo wearing a purple
jester garb. For his spells, he forms
vortices on his hands and unleashing them at his opponents, and for one technique uses the vortices as drills. Before encountering Zatch, Bari defeated every Mamodo in his way in the pursuit for the meaning of battle. The scuffle with Zatch and hearing his goal of being a kind king causes Bari to rethink his aim, and over time he begins to comprehend what being a "strong king" entails. Later, Bari infiltrates Faudo and eliminates Keith to save Zatch and his friends, but he gets caught in a trap rigged by Keith and is mortally wounded in the process, prompting Sunbeam to eliminate him out of mercy. In the anime, Bari and Keith are shown to be acrimonious with one another after the latter beat him in a
tempura eating contest. Bari is last seen being transported out of Faudo. Bari is voiced by
Ryotaro Okiayu in the Japanese version, and
Wally Wingert in the English dub. Bari's partner is , a
Finnish man. Gustav is constantly critical of Bari's endgame. However, when Bari is defeated, he praises his Mamodo in their final moments together. Gustav is voiced by
Unshou Ishizuka in the Japanese version, and
Crispin Freeman in the English dub.
Kido and Dr. Riddles , romanized as
Kedo in the Viz Media translation of the manga, is a dimwitted Mamodo portrayed as a
marionette with a graduation cap. For his spells, Kido changes his body into various mechanical contraptions, with one producing a swarm of miniaturized self-duplicates. His strongest spell conjures a giant mechanized goddess, which he uses against Belgim E.O. who also dispels him. Kido is voiced by
Akemi Okamura in the Japanese version, and
Brianne Siddall in the English dub. Kido's partner is
Dr. Riddles, known as in Japanese release, a wacky but golden-hearted 67-year-old American
illusionist. He lives inside a massive library that gives him limitless information on everything from the outside world. A running gag is that Kido would believe anything stated by Riddles who then tells him that he was joking, eliciting a shocked reaction from Kido. Riddles was a surgeon who quit his career and sequestered himself in the library after failing to save his grandson during a medical operation. As soon as Kido came into his life, Riddles emerged from seclusion and shared the secret of the Mamodo spellbooks to those he trusted, Kiyo included—this is because Kido reminded him of his late grandson. Riddles informs Zatch, Kanchomé, Tia, Ponygon, and Wonrei about the threat from Zofis and unifies them into a strike force team to blunt him, contemporaneously enlisting Brago and Clear Note without success. Even though Kido returns to the Mamodo world, Riddles continues to contribute to the tournament by discovering the emergence of Faudo. Riddles is implied to possess the Answer Talker. Dr. Riddles is voiced by
Rokuro Naya in the Japanese version, and
Quinton Flynn in the English dub.
Penny and Uri Penny, known as in the Japanese release, is a ravenous Mamodo portrayed as a tween girl with two long
ponytails; the shade of her blue hair differs between the manga and anime. She specializes in water-based spells. Penny brags about her obsessive love with Zatch, which started when she spotted him capturing a yellowtail on the Mamodo world. Penny then made multiple efforts to seduce Zatch. On Earth, she encounters Zatch in Japan, completely unaware of his amnesia. Believing that Zatch has dumped her, Penny goes on an angry rampage against him, uncasing a split personality. After her first attempt to eliminate Zatch fails, Penny is summoned by Zofis to command a small detachment of
resurrected Mamodo to help her exact revenge on Zatch. However, Penny flees back to Zofis when Zatch defeats them with Tia's aid. As Zatch and company infiltrate Zofis' hideout, Penny grows wise of Zofis' horrific methods and destroys the Stone of Moonlight before being eliminated by Demolt. In her fading moments, Penny states her desire for Zatch to forgive her misdoings and to play with her back on the Mamodo world, and he agrees to that promise. Penny is voiced by
Naoko Matsui in the Japanese version, and
Stephanie Sheh in the English dub. Penny's partner is
Uri, known as in the original, a vagabond who agreed to Penny's terms to steal food for his family. At the end of the manga series, he lands a stable job as a chef; he secures that occupation in the wake of the battle against Zofis in the anime. Uri is voiced by
Kosuke Toriumi in the Japanese version, and Stephen Apostolina in the English dub.
Byonko and Alvin Byonko, known as in the Japanese release, is a happy-go-lucky Mamodo portrayed as a frog with a clock on his chest and a
three-leaf clover on his head that had been a
four-leaf. His spell set consists of attacks and defenses with
viscoelastic saliva—one spell also stretches his limbs to immense proportions. Byonko is an agent of Zofis, helping him collect stone tablets to form his army of
pastime Mamodo, as well as escorting Penny over to him, inadvertently saving Zatch from her in the process. Although Byonko strives to impress Zofis and befriend the members of his army, he soon comes to realize Zofis' evil intentions and switches over to Zatch and company. He is ousted by Demolt at the climax of the offensive on Zofis. Byonko is voiced by
Yasuhiro Takato in the Japanese version, and
Brian Beacock in the English dub. Byonko's partner is , a semi-reclusive 56-year-old man living in retirement in
Madagascar before becoming enmeshed in the Mamodo tournament. Alvin repeatedly brushed off Byonko's urges to pair up with him, making him cry. Byonko cried louder when Alvin plucked a leaflet from the clover on his head, so Alvin sated him with a promise of giving him a cookie and agreed to accompany him. However, Alvin became wary of Zofis' deceptions and removed his
dentures to prevent himself from casting Byonko's spells, but he re-inserts his teeth to back Byonko once he mutinies against Zofis. After Zofis' defeat, Alvin returns to his provincial life with Byonko's leaflet as a keepsake. Alvin is voiced by
Masaaki Tsukada in the Japanese version, and
David Lodge in the English dub.
Ted and Jido is a brash and somewhat immature Mamodo portrayed as an elegantly-clad young boy with
pompadour hair. Ted only attacks and defends against foes in hand-to-hand combat, but his spells step up his stamina level, called , when invoked in a certain order; his highest upgrade is , but it causes him pain and is used sparingly. In the anime, one spell causes Ted to emit an explosive pulse of aura that sends him into a momentary coma. Ted becomes Zatch's friend when he spends a night at Kiyo's house. Ted is uninterested in being king; instead, he entered the tournament to seek closure with Cherish, with whom he has a relationship. In the manga, he encounters Cherish inside Faudo and breaks her out of Zeno's subjugation but is eliminated by Gyaron, his body fading in Cherish's arms. Due to differences in the anime's plot points, Ted makes it to the final episode wherein he is safely teleported off Faudo. Ted is voiced by
Junko Takeuchi in the Japanese version, and Michael P. Greco in the English dub. Ted's partner is
Jido, or in the Japanese release, a middle-aged streetwise drifter who rides a motorcycle as his personal means of transportation. He is Ted's sole company in the search across the world for Cherish. On the run-up to the infiltration of Faudo, Kiyo secretly instructs Jido and Ted to rendezvous with him and Zatch by giving them Apollo's contact information by email. Jido is voiced by
Kouji Ishii in the Japanese version, and Christopher Darga in the English dub.
Arth and Ellie is an incorruptible knight-laden Mamodo who wishes to politically reform the Mamodo world "for the greater good" as king. He relies on a sword to carry out his spells. Arth is the first to know about Faudo materializing on Earth, and he sought to forestall its release but failed. Rioh therefore inducts him into his ranks to help undo Faudo's seal. Upon its release, Arth fights alongside Zatch and company. During this, Arth also teaches Kiyo to read the Mamodo language. In the final stretch of the tournament, Arth falls to Gorm, an agent of Clear Note. In the anime, Arth sacrifices himself to Rioh to get Zatch and his allies past a blockade set up by Rioh. Arth is voiced by
Hideyuki Umezu in the Japanese version, and Randall Montgomery in the English dub. Arth's partner is , a stoic 7-year-old girl suffering from a terminal illness (the anime makes no mention of her ailment). Ellie becomes plagued with Rioh's curse as a consequence of Arth failing to stop Faudo's release. Her condition coupled with the aftereffects of the curse severely cripples Ellie and deprives her of necessary Heart Power. Sometime after Faudo, Ellie is cured of her disease, to Arth's jubilation. Ellie is voiced by
Konami Yoshida in the Japanese version, and
Sandy Fox in the English dub.
Koral Q and Grubb is a robotic Mamodo whose spells cause him to transmogrify into various gadgets, including deploying a cluster of mirrors. Even though he deftly outruns Zatch's spells, Koral Q ultimately falls to him. At the last moment, Koral Q gives Kiyo a photograph of Faudo as the only clue to its existence on Earth. Koral Q is voiced by
Chie Kōjiro. Koral Q's partner is , a tech-savvy junior high school delinquent who, like Kiyo at the beginning of the series, has no friends. Grubb has been spying on other Mamodo, including Zatch and his allies, from the outset to study their partners and strategies, using Koral Q as his resource. Grubb chastises Zatch and Kiyo for battling Zofis and his army of ancient Mamodo. He is also revealed to have taken the picture of Faudo. When Grubb loses Koral Q, Kiyo encourages him to make friends, and he does so. Grubb is voiced by
Akio Suyama.
Kardio and Souza resembles a
Mongolian horse. His spells allow him to gain armor and manipulate ice, an obverse of Ponygon's moveset. Besides his spellbook owner, Kardio hates working with others, after having been ambushed by a gang of Mamodo during the tournament. Kardio also harbors a particular distaste toward Ponygon for his fire-based techniques, and for the fact that Ponygon has many friends. He eventually overcomes his distrust and teams up with Zatch and his allies as they make their way through Faudo. Kardio is knocked out of the tournament trying to defend Ellie from a Faudo-inhabited organic being. This does not happen in the anime as Kardio is teleported off Faudo in the series finale. Kardio is voiced by
Yuji Ueda. Kardio's partner is , a hardened, albeit diligent, little boy. He is capable of understanding Kardio who, like Ponygon, is unable to speak in words; Souza is also the only human character who can understand Ponygon as well. Souza scoffs at the idea of friendship, and he angrily derides Ponygon and Sunbeam for having friends, thus stoking a bitter adversity. He soon warms up to Zatch and company after helping Rioh unlock Faudo. Souza came across Kardio in
Mongolia and mistook him for a lost horse. Souza tried
riding on his back, but Kardio resisted and nearly flung Souza off, getting some of his mane pulled off as a result. After much effort, Souza tamed Kardio and became deeply fond of him. Souza also shows an apparent affection to Ellie as he attempts to make her die from Rioh's curse to prevent Faudo's release, but Kiyo deters him from that plan. After losing Kardio, Souza returns to the campsite where he found his Mamodo and reunites with his little sister, who starkly resembles Ellie. Souza is voiced by
Kumiko Watanabe.
Rein and Kyle is a warmhearted Mamodo in the form of a large polar bear. He specializes in attacks with claws as his spells. Rein can also transform into a young man for the purpose of disguising himself. Rein was highly feared on the Mamodo world for his mad rampages, except for Zatch who befriended Rein after rescuing him from a tumble off a cliff. In the tournament, Zatch cannot remember his interactions with Rein because of his amnesia. Rein begs Zatch to eliminate him, but Zatch is reluctant to do so. Rein sustains heavy injuries in an assault by Rodeux, and in the aftermath, Zatch finally agrees to oust Rein from the tournament. Rein is voiced by
Kenta Miyake. Rein's partner is , a small, cowardly orphan living in Southeast Asia. Kyle inherited an elegant mansion from his late father, but a member of the house,
Jill, appropriated the family fortune and placed Kyle in a dilapidated hut. Rein attributes Kyle's lack of self-esteem to Jill's neglectful treatment on him, and his unwillingness to cast spells is the reason that Rein wants to return to the Mamodo world. As Zatch and Kiyo try to help Kyle regain his confidence, Purio and Lupa kidnap Kyle and force him to join them, but Zatch rescues him. Watching Rein battle Rodeux gives Kyle the tenacity needed to cast spells for Rein to repel a flustered Rodeux. Later, with Rein gone, Kyle stands up to Jill by threatening to expose her atrocities to the world. Kyle and is voiced by
Kokoro Kikuchi.
Rodeux and Chita is a short-tempered Mamodo with an appearance based on a
vampire bat. For his spells, he uses his wings to carry out attacks, such as creating disruptive vortices. Purio tricks Rodeux into recruiting Rein and Kyle, but Rein knocks Rodeux out cold. After that, Rodeux becomes an acolyte of Rioh, and he kidnaps a hexed Li-en to bring Wonrei over to Rioh's forces. As soon as Faudo is released, Rodeux tries to steal it but falls back in line with Rioh who threatens to turn Faudo on those who oppose him. In the manga, Rodeux is strengthened with Godufa for a grueling matchup with Zatch and his allies. However, as the adverse effects of his power-up set in, Rodeux realizes his folly and sides with Zatch. He eventually becomes devitalized to the point that he cannot battle anymore, and Purio ousts him to end his agony. In the anime, Rodeux shows unwavered loyalty to Rioh. Wonrei and Li-en occupy Rodeux to help Zatch and company maintain their progress through Faudo. Thereafter, Rodeux teams up with Zaruchim to slow down Zatch and the others, but their ploy backfires, and Zaruchim slashes Rodeux's spellbook in anger, dispelling him from the tournament. Rodeux is voiced by
Susumu Chiba. Rodeux's partner is , a girl from Brazil. She had a
domestic dispute with her former boyfriend which caused the loss of her right eye. Subsequently, Rodeux gave her a distinct
eye patch. Chita willingly joins Rioh to prove herself the strongest of all. In the anime, Rodeux injects Faudo's hormonal serum into Chita to bolster her Heart Energy during a desperate sparring with Wonrei. Sometime after Faudo, Chita receives an
eye transplant. Chita is voiced by
Shizuka Itō.
Keith and Berun is a tactless and overweening Mamodo whose spells involve concentrated
plasma beams. He enjoys smoking cigars and flaunts a
walking stick. He often babbles out the verses of
Ode to Joy and tends to wave his stick in the manner of a
conductor's rod while singing. He is also a self-professed archrival of Bari, who is passive about it in the manga. Whereas in the anime, this rivalry is more reciprocal because Keith surpassed him in a potato
tempura eating contest. Although Rioh picks him for his scheme with Faudo, in reality Keith plans to betray him and get control of Faudo for himself, but Zeno beats him to it. Keith loses out to Bari inside Faudo. In the anime, Keith is more ideologically attuned to Rioh, and he gets into an endless battle with Bari, until he is ushered off Faudo by Kiyo. Keith is voiced by
Kenyu Horiuchi. Keith's partner is , a movie director who wears a red ball on his nose. Berun met Keith working at a tempura restaurant where he also heard
Ode to Joy. Berun is voiced by Satoshi Taki.
Riya and Aleshie is a bullish Mamodo portrayed as a small antelope with a T-shaped antler. His spells are predicated on heavy ammunitions, such as enormous bullets fired from a
cylinder on his chest. Riya prods others with his antler to signify that he likes them. The manga and anime diverge on Riya's demise: in the first, he is eliminated by Zaruchim; while in the second, he falls to Zeno trying to defend Zatch from him. Riya is voiced by
Kotono Mitsuishi. Riya's partner is , a witty
indigenous African teenage boy. He and Riya meet Zatch and company outside the mouth of Faudo. Aleshie is at first skeptical of the group's mission to stop Faudo, but he becomes content to hear Zatch's solid resolution to defend every living being and accompanies them, sharing knowledge about Faudo's inner workings. In reality, however, Aleshie intended to use Zatch as subterfuge for ridding himself of Rioh's curse, which he incurred for resisting Rioh. Only after helping Rioh open Faudo's vault to lift the curse do Aleshie and Riya betray Rioh and assist Zatch and camp. Aleshie and Zaruchim also hold a grudge against one another, because Zaruchim had threatened to kill a fellow villager to blackmail Aleshie into joining Rioh's forces. Once Faudo is gone, Aleshie reunites with his people whom he had sworn to protect from impending danger. Aleshie is voiced by
Tomokazu Seki.
Cherish and Nicole is an audacious Mamodo whose spells revolve around
crystals. She ran an orphanage with her parents on the Mamodo world. Among the orphans she cared for is Ted, who aspires to be as brave as she and develops a strong bond with her. Cherish is among a cadre of Mamodo conspiring with Rioh's plans with Faudo. In the manga, as Zeno takes command of Faudo, he tortures Cherish and infuses her with Godufa to forcibly pit her against Ted, who saves her at his own expense. Thereafter, Cherish sides with Zatch and company to retaliate against Zeno, who then ousts her. In the anime, Cherish is willfully loyal to Rioh and accuses Ted of setting the orphanage afire and killing her parents (when it was actually Zofis). As Ted tries to commiserate with Cherish, Rioh eliminates her by sending a
protoplasmic entity to attack them both. Cherish is voiced by
Ai Nagano. Cherish's partner is , a
safari ranger. She disguises herself as a male in her travels with Cherish out of concern for her own safety. Rioh places the curse on Nicole to force Cherish into complying with his wishes. Nicole is voiced by
Sayaka Aida.
Momon and Elle Chivas is a raunchy and unforthcoming Mamodo whose appearance is a blend of a chimpanzee and a rabbit. His spells are based on cunning and evasion, which comport with his tendencies to avoid battles at all costs. Momon's droopy ears allow him to sense a Mamodo's essence and their spells. As a recurring gag, he drops his face flat on the ground whenever he tells a lie. He also delights in snatching women's undergarments and takes
such interest in Tia, inadvertently making her unlock a mighty attack spell. Notwithstanding these, Momon proves elemental in positively locating Faudo for Zatch and his friends. Inside Faudo, he resuscitates Kiyo in a comedial fashion following Rioh's direct hits. Momon sacrifices himself to Zeno in a confrontation that buys Zatch more time. In the anime, Momon survives the turmoil inside Faudo and helps Kiyo with evacuation efforts before being evacuated himself. Momon is voiced by
Naozumi Takahashi. Momon's partner is , a milquetoast and pacifistic
nun. Elle ventures with Momon to find remedies to the ravages brought about by the Mamodo tournament while struggling to control her Mamodo's debaucheries. Elle's first direct involvement in the tournament would be against Megumi and Tia, after Momon repeatedly molests the latter. Elle becomes increasingly proactive when she forces Momon to cooperate with Zatch and his allies on their mission to Faudo. Eventually, she loses patience with Momon and furiously scolds him for his traits. Nevertheless, Elle is deeply proud of Momon for his nonviolent choices, made plain when he defends her from Zaruchim's attacks. Additionally, Sunbeam becomes smitten with Elle after saving her from a chasm. At the end of the series, she and Sunbeam start a romantic relationship. Elle is voiced by
Kotono Mitsuishi.
Zaruchim and Laushin Mo is a
phantasmal Mamodo and an ardent ally of Rioh, serving as his
right-hand man. Zaruchim's spells are
umbral-based, with one allowing him to use his opponents' shadows to
constrict them. He has extra eyes on every portion of his scalp, enabling him to see omnidirectionally. Zaruchim is also revealed in the anime to possess two techniques not confined to his spellbook: shapeshifting, with which he disguises himself as Li-en, and self-duplication. Zaruchim enlists several Mamodo at Rioh's behest to help raise Faudo from stasis. In the manga, when Zeno usurps control of Faudo, Zaruchim questions his loyalism and refuses to embrace Faudo's powers, which leads to Ponygon eliminating him. In the anime, Zaruchim is steadfastly subservient to Rioh's cause and nearly kills Kiyo, Megumi and Aleshie with his spells before being driven off by Ted, and then ousted by Zeno. Zaruchim is voiced by
Ryō Horikawa. Zaruchim's partner is , a thickset serial burglar who is only concerned with enriching himself and securing his own future. For those reasons, Laushin readily pledges his allegiance with Rioh in the hopes of actualizing his dreams. However, at the end of the series, he is seen in jail for his crimes. Laushin is voiced by
Masami Kikuchi.
Fango and Adler is another ally of Rioh, who has sent him to stop Zatch and his allies inside Faudo. Fango's spells are based on fire. In the manga, Fango uses Godufa to combat Ponygon and Riya. Despite this power-up, Riya eliminates him, and Zaruchim uses Fango's fading body to shield himself from another attack—this is in response to Fango's earlier dissensions. In the anime, Fango is joined by Jedun for a battle against Ponygon and Kardio, both who subsequently oust him. Fango is voiced by
Konami Yoshida. Fango's partner is , a nonchalant young adult who feels that the world has no value. Alder is voiced by
Masami Kikuchi.
Jedun and Excarole Rum is a green
rodan-like Mamodo also allied with Rioh. His spells create snake-like forms, while one spell makes him attack in the manner of a
flying disc. In the manga, Jedun is initially hesitant to do any kind of battle but is persuaded when he accepts the Godufa upgrade inside Faudo and attacks Zatch and his allies, and he directly targets Elle before being eliminated by Zatch. The anime's incarnation of Jedun is more insidious wherein he teams up with Fango against Ponygon and Kardio, who quickly oust him. Jedun is voiced
Kōji Ishii. Jedun's partner is , a girl from
South Korea whom Jedun captured and trapped inside a compartment on his belly. Rum casts Jedun's spells from within the Mamodo. She is voiced by
Ai Nagano.
Gyaron and Harry Jet is a chauvinistic armored Mamodo with long steel razor blades flaring from his arms. His armor also channels his spells; one spell increases his agility, and another makes him physically larger and stronger. Gyaron is among the Mamodo abetting in Rioh's plan for Faudo, and is extremely obedient to Zeno who lends him Godufa (in the manga), or to Rioh (in the anime). Gyaron is ousted by Ted in the manga, or by Riya in the anime. Gyaron is voiced by
Susumu Chiba. Gyaron partner is , an opportunist who becomes
obsessed with Faudo and joins with Rioh. He is cautious of Gyaron's wellbeing over his decision to merge with Godufa. Harry is voiced by
Hiroki Takahashi.
Ashron and Rin Visé is portrayed as a giant winged dragon with crimson scales, which allow him to absorb opponents' attacks and mitigate damage. Ashron's spells allow him to unleash blasts of fire and alter parts of his body to fashion attacks. He is also able to change into a human form at will. His stated objective as king is to dismantle the
caste system on the Mamodo world. Ashron is the first character to warn Zatch and his allies about Clear Note, with whom he has been locked in a perpetual feud since the start of the tournament. In his final battle, Ashron manages to put Clear Note in an 18-month
cryptobiotic slumber but is knocked out of the tournament in the process. He comes in 9th place on the tournament. Ashron's partner is , a largely silent young adult with radically long
spiky hair who regularly calls Ashron his "master".
Gorm and Mir resembles a beetle. His while
Crispin Freeman provides his voice for the English dub. ==Minor characters==