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- All Your Powers Combined: Against Clear's final form, his book turns golden and all the defeated demons show up to lend their support, and in several cases, their spells. Saying it's awesome is an understatement.
- Amnesiac Hero: Even his name is a mystery to him at first.
- Badass Adorable: Most demons are, but Zatch is especially cute and, after gaining some experience, exceptionally badass.
- Berserk Button: In general, Zatch despises mamodos who gleefully abuse their power and influence on others, especially those looking to take advantage of being king.
- Beware the Nice Ones: When in the proper mood, he's a force of nature.
- Big Eater: Like most mamodo, he's more than capable of eating an animal whole, bones and all. Cooking is optional.
- Boring Invincible Hero: A surprising subversion. He actually loses several times. First to Zeon (before he met Kiyo), then to Brago, then Bari, and finally Riou. And even then, the victories he does get aren't easy and Kiyo and he don't come out unscathed, heck a few time they're nearly beaten to the brink of death. They've also a number of technical losses, such as the fight against Shinichi and Eshros - Shinichi ends up with Kiyomaro's book after the clash of Guranbaison and Zakeru, but accepts his 'win' as his personal growth, casts aside Eshros, and returns their book to let them send him home.
- Breath Weapon: Most of his spells are projected from his mouth.
- Cain and Abel: The Abel to Zeon's Cain.
- Clothes Make the Superman: While Zatch is fairly powerful on his own, he learns the secrets of his regenerating, shielding mantle late in the story.
- Curtains Match the Window: Blonde hair and gold eyes.
- Death Glare: Enough to stun resident badass Bari.
- Determinator: Giving up is about the only thing he can't do. The few battles he's ever lost were ones where he was physically unable to continue.
- Dynamic Entry: How he's introduced to the series: hang gliding straight into Kiyo's bedroom window.
- Easily Impressed: Blowing his mind is a piece of cake. In one of the first episodes, Kiyo is able to captivate him with a toy make of a noodle box and chopsticks.
- Elemental Eye Colours: He has gold eyes and electric powers.
- The Good King: His goal to become one.
- Go Through Me: Zatch takes a lot of hits to protect Kiyo. The one time Kiyo explicitly tells Zatch not to do this, Kiyo dies.
- Hair of Gold, Heart of Gold: In noticeable contrast to his white-haired twin brother.
- Kid Hero: He's no more than 8 years old.
- Laser-Guided Amnesia: His brother stole his memories to make sure he suffered in the human world, constantly attacked without knowing why.
- Limit Break: Bao Zakerga
- Magic Pants: As it turns out, his mantle actually is magic, giving it the ability to stretch to any size.
- Magnetic Hero: And we don't just mean Jikerdor.
- Naked First Impression: With Kiyo.
- Naked on Arrival: Right into Kiyo's bedroom.
- Naked People Are Funny
- Oblivious to Love: Really gets him into trouble with Penny, who thinks he's trying to insult her.
- Our Dragons Are Different: His strongest attack spell, "Baou Zakeruga", which condenses into a huge electrical dragon.
- Power Glows: His physical enhancement spell, "Rauzaruk".
- The Power of Hate: Baou Zakeruga's true power is only unlocked through Zatch's seething hatred towards Riou, for killing Kiyo.
- Shock and Awe: His primary element
- Super Mode: Rauzaruk, the sixth spell, enhances Zatch's strength and speed exponentially for thirty seconds.At the cost of not being able to use any other spells. Thankfully Kiyo figured this out pretty quickly. The Golden Book in the final chapters, which allowed Gash/Zatch to use souped-up spells of past mamodo who were already defeated.
- Super Strength: True of all demons, but most obvious with Zatch, who stopped Pamoon's strongest spell with his body alone.
- Trademark Favorite Food: Yellowtail tuna
- Verbal Tic: 'Unu!' This was apparently a way of royalty speaking, started after finding out who his real family was
- What Happened to the Mouse?: Seriously, where the hell did that eagle come from?
- Awesomeness by Analysis: With an IQ of 180, this is his own special skill. Later on, when he gains the Answer Talker this is only amplified.
- Back from the Dead: He is in fact dead for a short period, only has his heart restarted by an emotionally broken Zatch pounding on his chest, and even that isn't enough. It also takes a lot of Saifogeos and a long dip in restorative Faudo juice before he wakes up, and his allies take a lot of damage by then.
- Badass Bookworm: Near the end of the series, he's athletic enough to break school records.
- Big Damn Heroes: At the end of the Faudo saga, when he finally comes back.
- Brilliant, but Lazy: At the beginning of the series, he chooses not to go to school, in part due to bullying and in part because he's so smart it's a triviality.
- Butt-Monkey: On a lot of occasions.
- Came Back Strong: With the Answer Talker.
- Death Glare: On par with Zatch's. Possibly the true reason they make such good partners.
- Demon Head: Taken to epic levels in the final fight with Rodeaux.
- Determinator: Matched only by Zatch in this department; even his own death isn't enough to stop him.
- Heroic Sacrifice: Performed in the battle against Riou/Leo.
- Informed Flaw: His Jerkass / Insufferable Genius tendencies early on tend to be quite informed since his classmates were equally rude to him. And according to his father, once middle school came around and kids realised how much smarter than them Kiyo is, they shunned him.
- Jerk with a Heart of Gold: He's arrogant and short-tempered, but a good guy deep down.
- Loner-Turned-Friend: To just about everyone in his school. Once he comes out of his shell, he's surprisingly good at making friends.
- Nightmare Face: Gains a disturbing demonic face with fangs and horns whenever he's really enraged.
- Oblivious to Love: Both Suzume and Megumi have feelings for him. Kiyo has no clue, one of the only areas where his intelligence fails him.
- Only Sane Man: Often when faced with the antics of the rest of the group.
- Reed Richards Is Useless: Subverted, once he gains the Answer Talker power and has some downtime to ponder it, his first ideas are how he can help the rest of the world with it.
- Took a Level in Kindness: Starts out as an ill-tempered Jerkass to soon become a Jerk with a Heart of Gold. More obvious after character development. By the end of the series, he's a Nice Guy who only gets mean if angry or frustrated.
- Younger Than He Looks: Um, yeah, he don't look like a middle school student.
- Attack Reflector: Giga Ra Seushiru traps the enemy in a barrier that reflect their spells back at them.
- Barrier Warrior: Her spell theme.
- Berserk Button: When people look at her panties. It was enough to awaken her strongest attack spell, which is completely fueled by anger and hate.
- The Dreaded: She's notoriously known to be a bully in the demon world, and well deserving of her nickname.
- Fiery Redhead: Her nickname in the demon world is "Tia the Strangler", of course we know why.
- Goofy Print Underwear: And if you see them you will regret it.
- Healing Shiv: Saifogeo, a giant magical sword that heals whoever it stabs. Really.
- Little Miss Badass
- The Medic: Falls into this role once her Saifogeo spell is revealed.
- Combat Medic: Both used and averted. She does have attack spells, but the first is incredibly weak, the second is an Attack Reflector that can be broken if the opponent's attack is too powerful for it to handle, and the third is a Cool, but Inefficient attack that requires her to be extremely angered to be used.
- The Power of Friendship & The Power of Love: Chajiru Seshirudon
- The Power of Hate: Chajiru Saifodon
- Shipper on Deck: She seems to ship Kiyo and Megumi, noticing with a smile when Megumi once blushed at being called Kiyo's girlfriend.
- Ship Tease: Near the end of the series she finds herself oddly excited at the prospect of seeing Zatch the next day.
- Single Woman Seeks Good Man: She has a bit of a crush on Zatch.
- Tsundere: Mostly with Zatch. With everyone else, she's pretty sweet all the time.
- You Gotta Have Blue Hair: In the anime, where she had pink hair. The author Makoto Raiku, in the other hand, depicts her as red-haired in the color spreads and volume covers.
- Betty and Veronica: Veronica to Suzy's Betty.
- Cool Big Sis: Especially to Tia.
- Defeat by Modesty: Narrowly averted in the Faudo arc; she nearly refuses to say Abhorrent Admirer Unko Tin-tin/Poosophagus's name as part of a gag test of wisdom.
- Idol Singer
- Only Sane Man: Alongside Kiyo, though she's the sort to get amused while he gets angry.
- Rescue Romance: It's pretty clear she fell for Kiyo the second he showed up to save her and Tia from Maruss.
- Ship Tease: With Kiyo. All the time. It seems to be less frequent in the manga and more in the anime. The manga had one very prominent moment when Kiyo needed mouth-to-mouth and Megumi look very gleeful at the chance, with Tia even telling her its her opportunity. The anime had more regular stuff.
Voiced by: Masami Kikuchi (JP), Richard Steven Horvitz (EN, Episodes 11-49), Jeff Nimoy (EN), Isacha Mengíbar (SP)The first of Zatch's allies, he serves as Comic Relief. Despite his timidity, he fights alongside his friends and desires to be stronger. Has the power of Illusions.
- Beware the Nice Ones: Particularly invoked in his fights with Bago and Goomu.
- Beware the Silly Ones: Kanchome's apparently useless power and ridiculous demeanor make him easy to underestimate. It's almost always a bad idea especially after his training with Dufort.
- Big Brother Instinct: With Rusca, a little girl who he befriended while he got strayed in a rural village in Spain.
- Cowardly Lion: At least once he begins to get some stronger spells...
- Delicious Distraction: Candies, which actually led him to nothing but trouble.
- Heart Is an Awesome Power: Once you figure out how to use these powers correctly, they're useful. Kanchome's illusions are vital to a number of victories, and once he develops stronger techniques, is arguably the strongest demon in the series. His 3 final spells allow him to trick a foe into cancelling their attacks, use their own attacks against them (and only that demon) and most powerful, his illusion world, where the pain is real (at least through mental truama.) During a training session, he managed to beat Zatch.
- Master of Illusion: Particularly his final spell, which traps the target in a full illusionary world with no escape.
- Oddball Doppelganger: He can transform into replicas of other characters, but they're far from perfect. One had a nose that would make Cyrano De Bergerac feel normal and another has a forehead as big as the torso. Luckily for him the people he had to fool were idiots
- Self-Duplication: The fourth spell, "Dima Buruk," produces a number of Kanchome clones, each with comparable speed and strength to a Rauzaruk-enhanced Zatch.
- Sweet Tooth: He apparently lives entirely on candy and desserts.
- Took a Level in Badass: Boy, did he. After several months of training with Dufort, he learns how to directly affect the opponent's mind, making his illusions unbeatable. He even beats Zatch in a practice match.
- What Kind of Lame Power Is Heart, Anyway?: Compared to Zatch's electrical powers, Tia's shielding and healing abilities, and Ponygon's super-speed armor, transforming into something without any boost to stats seems a bit lame.
- With Great Power Comes Great Insanity: His strongest spell began doing this to him until Folgore snapped him out of it.
- Agent Peacock: A flamboyant pop-singer with questionable taste in clothing and more endurance than a mamodo.
- Bowdlerize: 'Chichi wo moge/Groping Breasts/Pick the Boobies' becomes 'Hey Hey Let's Dance All Day'.
- Butt-Monkey: Bordering with Iron Butt Monkey.
- Clothing Damage: Of the comic variety.
- Crouching Moron, Hidden Badass: Once we find out his origin story.
- Dark and Troubled Past: Was a feared juvenile delinquent who beat up anyone in his way. Led to being feared by his hometown and being kicked out by his own parents at gunpoint. After seeing a show about hippos, he goes from being a 'lion' to a 'hippo.'
- Death Glare: When he gets serious, his eyes take on the same designs as Gash, Zeon, and Ashuron to show his incredible willpower.
- Delinquents: What he used to be. It appears to still haunt him to this day.
- Determinator: It's pretty much impossible to get him to stay down.
- Goofy Print Underwear: Added in the dub to hide his original bare ass via clothing damage.
- Handsome Lech
- Hidden Depths: He's a notorious womanizer, who still finds time to visit sick kids in the hospital for a special performance. He also showcases considerable strength of will for a preppy pop star. Not even counting his past as a delinquent...
- Idol Singer: A rare male example. And an Italian one at that. Although it's implied that he's more popular in Japan than his home country.
- Lovable Sex Maniac: Come ON, his most popular song (in the original Japanese) is about boobs!
- Made of Iron: He invariably takes more damage than Kanchome when the two are in battle. It never seems to slow him down for very long.
- Theme Music Power-Up: When Kanchome sings "Iron Man Folgore," Parco rises up to fight once more despite his injuries. Subverted that after Kiyo casts Zakeru several times, he finds himself too numb to try and stand up again. The manga has him look fearful of Kanchome's singing and tries to crawl away.
- Adaptive Armor: His ultimate armor spell in the manga can shapeshift.
- Boring, but Practical: His true forte is speed. Sure it's not as flashy as throwing lightning bolts, but he can dodge almost anything and hit pretty hard thanks to it.
- Cowardly Lion: He initially didn't want to find his partner due to a fear of battle. He gets over it when his friends need him to step up.
- Fire-Forged Friends: He hated Zatch when they first met, until Zatch helped him save his father's life.
- Good Is Not Nice: It's perhaps indicative of the seriousness of the situation, but during the fight to stop Faudo Ponygon attempts to defeat the stronger Rodeaux by broiling his partner alive.
- Heroic Sacrifice: Runs himself almost literally to death bringing Zatch to the final battle with Clear Note. Sunbeam has Megumi burn his book before he actually dies.
- How Do I Shot Web?: At first he has a hard time controlling his flames, often burning Sunbeam on accident.
- Instant Armor: The effect of every spell he learns.
- Meaningful Name: Invoked by Kiyo, who disliked him at the time, by giving him the name Umagon. Roughly, it means "horse monster".
- My Name Is Not Durwood: He keeps trying to tell everyone his name is Schneider, but nobody understands him. Once they are back to the demon world, he has grown fond of the Umagon/Ponygon name, even though everyone already knows his real name.
- Playing with Fire: While the third spell is activated and his armor specialty.
- Took a Level in Badass: His book owner was late to the party, but once he showed up...
- The Unintelligible: To everyone but Sunbeam and fellow horse Karudio, though Sunbeam still can't understand his name and Karudio never tells anyone because he's sort of a dick like that.
Voiced by: Hozumi Gouda (JP), Henry Dittman (EN), José Escobosa (SP)Ponygon's partner, he is a automobile engineer from Germany. One of the older members of the group and one of the few to understand Ponygon (albeit not able to figure out his name.)
- Adults Are Useless: A defiance, since he's one of the older contenders in the fight, and holds himself to the ideal of being a "cool adult" (which basically means reliable and trustworthy).
- Catch-Phrase: "GROOVY!" and "ROCK 'N ROLL!"
- Continuity Nod: In a breather chapter, everyone is trying to learn to ice skate, but all fail spectacularly. Sunbeam is especially livid banging and cursing the ice (as it wasn't that much later from his fight against Sauza and Karudio.
- Friend to All Living Things: Animals love him, and he can understand their thoughts. The epilogue shows him living on an African animal sanctuary.
- Germanic Efficiency- A mild example. Sunbeam is a German engineer, specializing in automobiles. The epilogue shows him helping out by starting automobile factories in Africa.
- Gratuitous English: Very fond of in the Japanese version.
- Ship Tease: With nun Elle Chivas. The end shows they're living together in Africa.
Voiced by: Kazunari Kojima (JP), Wally Wingert (EN), Marisa Marco (SP)One of the strongest Mamodo ever, he is a sullen and serious contender. He mellows a bit in the tournament and gains more drive. He strives to be a 'strict, but kind' king. His power is Gravity.
- Big Eater: Most mamodo are. But he is seen eating a whole crocodile. Raw.
- Casting a Shadow: His powers actually manifest as gravity manipulation.
- Dark Is Not Evil: Brago is visually terrifying, no doubt, but he's far from evil.
- The Dreaded: He's pretty feared among the mamodo as a scary guy. They're right. He is also one of the Four Prodigies, four mamodo children so mighty that only adults could fight them. The others are the two dragon siblings and Zeon.
- Gravity Is Purple: Most of his spells are either black, purple or both.
- Gravity Master: All of his spells are based on gravity.
- Jerk Ass: Generally rude and doesn't think highly of humans.
- Jerk with a Heart of Gold after some Character Development, but by the end of the series the jerk part has mostly faded. He desires to become a strict, but kind king.
- Mundane Utility: His Reisu spell, basically a ball of physical gravity, is used more than once to push people to a safe spot.
- Names to Run Away from Really Fast: The demon of the black book is an intimidating description.
- One-Man Army: He basically solos the bulk of Zofis' thousand year old demon army, and the only reason he has any trouble at all is the need to separate the brainwashed masters from the crowd before he can use his stronger spells.
- The Rival: Towards Zatch, eventually. For most of the contest Zatch and Kiyo view Brago as the man they have to surpass to win.
- Sociopathic Hero: Generally rude and doesn't think highly of humans. He even threatened the life of Sherry's butler once. To remind, Brago is no more than 15. Subverted after plenty of Character Development.
- Training from Hell: He went through some unspecified "Elite Training". Whatever it was, it was enough to make him one of the favorites to win the battle.
Voiced by: Fumiko Orikasa (JP), Saffron Henderson (Eps 1-85) and later Karen Strassman (Eps 86-98), Pilar Martín (SP)An 18 year-old heiress from France, she is Brago's partner. Initially through reluctance, they do grow together. She serves as an aloof ally and grew up in a rather cold home. Her reason for fighting in the battle is to rescue her best friend.
- Abusive Parents: Sherry's mother, at least. She was immensely overbearing and forced a load of work and practices upon a very young Sherry. Her father's whereabouts are unknown. Her mother was so abrasive and disapproving that Sherry once attempted to kill herself.
- Action Girl: The first female bookkeeper shown, and the only one who can keep up with her mamodo.
- Badass Normal: Unlike other bookeepers, who usually just stand back and casts spells, she joins the fray as much as Brago, usually fighting the opposing bookeeper.
- Charles Atlas Superpower: She starts off about as tough as you'd expect a genteel 18 year-old girl to be. After training herself to keep up with Brago, she's tough enough to floor some Mamodo.
- Childhood Friends: With Koko.
- Defrosting Ice Queen
- "I Know You're in There Somewhere" Fight: She struggles to wake Brainwashed and Crazy Koko, who insists that she turned evil out of her own free will.
- Interrupted Suicide: As a little girl, she couldn't take her mother's abuse and attempted to drown herself, but Koko saved her.
- Jerk with a Heart of Gold: Spares Zatch and Kiyo the first time because she ultimately feels that they share a similar motivation (trying to save their friend) and by tearing friends apart, she'd be no better than Zofis.
- Lady of War: In the middle of the series, she's body-slamming mamodo like it's nothing and all while wearing a frilly pink dress.
- Ojou Ringlets
- Rich Bitch: Sort of; she's not a snob, but she is kind of bitchy And can you blame her?
- The Only One Allowed to Defeat You: To Zofis.
- The Unfettered: There are two things that matter to her: Save Koko and make Brago king. Everything else is secondary, if that.
- Whip It Good: She has a cane for all purposes which doubles as a whip. She has used it offensively.
- Awesomeness by Analysis: Has an unspecified ability to predict incoming attacks.
- Badass Normal: He has high reflexes that enable him to dodge things most humans can such as shards of stone from an explosion and even Mamodo spells.
- Shipper on Deck: Refers to Megumi as Kiyo's girlfriend.
- Uncle Pennybags: He's the head of a financial group and is the one to provide the heroes with private planes and such for their battles.
- Walking the Earth: He was a wanderer before he met Ropes, after his book is burned he returns to his family's business.
- The Worf Effect: Fights Kiyomaro and Gash to a stand still then loses to Zeon to show the latter's power.
- Worthy Opponent: Considers Kiyomaro to be this before they fight, which is why he wanted to.
- Bare-Fisted Monk: His spells come in the form of powerful punches and kicks.
- Face–Heel Turn: In the Faudo arc, to save Li-en from the curse. He changes back the moment it is lifted.
- Interspecies Romance: With Li-en.
- No-Holds-Barred Beatdown: Unko Tintin kicks the absolute crap out of him.
- Star-Crossed Lovers: With Li-en.
- Unconscious Objector: At the end of their fight Unko Tintin isn't sure if Wonrei is still conscious or not.
- You Shall Not Pass: Holds off Unko Tintin.
Voiced by: Haruna Ikezawa (JP), Gwendoline Yeo (EN), Amparo Valencia (SP)Wonrei's partner, she is from China and her father is a crime boss, leading to her being rather lonely.
- Anime Chinese Girl
- Faux Action Girl: Wonrei normally does the fighting, after all, and the one time she gets to blows with an antagonist she's quickly taken down, despite supposedly being skilled in martial arts herself. To her credit, she does do well against Mooks but most other enemies are just stronger than a human could be.
- Interspecies Romance: With Wonrei.
- Mafia Princess: Her father is an unspecified high-roller in the Hong Kong underworld.
- Odango Hair
- Star-Crossed Lovers: As she points out, even if Wonrei wins, they'll be separated. She is able to accept this because he'll always be in her heart.
Voiced by: Naozumi Takahashi (JP)
- Badass Pacifist: None of his spells can be used offensively, but his spells are still powerful, one able to launch a red beam that slows down opponents.
- Beware the Silly Ones: In the Faudo Arc's final battle, he beats Rodeaux, Zeon's incredibly deadly Dragon, to a pulp using nothing but support-type spells. He's in control the entire fight, and only loses because Rodeaux takes a cheap shot at Elle.
- Character Development: Become less pervert and more courageous as the story march on.
- Cowardly Lion: He spends the whole Faudo Arc shivering and hiding. But when the chips are down, he takes on the Arc's Co-Dragons effortlessly
- Hyper Awareness: His demon sensing skills are so sharp he can dodge attacks without looking at them, often with miniscule margin of error.
- Mundane Utility: The first time the first time Elle has to read the book, he uses each spell to get a look at Tia's panties.
- Panty Thief: Although he's not above bras and swimsuits either.
- Pinocchio Nose: His lips get longer whenever he lies.
Voiced by: Kotono Mitsuishi (JP)Momon's partner, a nun who travels the world to stop Mamodo from fighting.
- Armor-Piercing Slap: Delivers one to Momon when she finally gets tired of his cowardly ways.
- Catch-Phrase: Constantly says "Oyoyoyoyoyo" whenever she's nervous. Also, how many times have you heard her say "Momon that's bad!"?
- Hidden Depths: She's VERY good at singing, especially Beethoven's Ode to Joy.
- Nun Too Holy: Played a bit.
- Parental Substitute: Tries to be one for Momon anyway, yet despite his perverted nature and never listening to her, Elle still cares for him and tries her best to protect him when his antics get him into trouble. She is a nun after all.
- Ship Tease: With Kafka Sunbeam.
- Technical Pacifist: She'd rather not use violence. Fittingly, her partner has absolutely no attack spells at all and was quite proud he never learned any offensive spells.
- Berserk Button: Hurting the Professor makes him explode with rage.
- Easily Impressed: He's constantly amazed by Dr. Riddles tall tales, no matter how unrealistic they are.
- Frickin' Laser Beams: One of his primary means of attack.
- Mini Mook: His Koburuku spell summons a bunch of mini Kidos... from his mouth.
- More Dakka: The other primary means of attack.
- Super Gullible: No matter how many times he falls for it, he still gets blown away by his book owner's obviously exaggerated stories only to get devastated when the Dr. Riddles reveals he was just kidding.
- Took a Level in Badass: Kid really kicks his combat prowess up a notch when the Professor is badly injured by Belgim E.O.
- Wave Motion Gun: His Zegaruga and Gigano Zegar spells, being giant laser cannons.
- Badass Grandpa: That he can keep up with all of the craziness going on around him is astonishing. His age does catch up with him every once and a while, though.
- Big Good: He's the one who gathers the book users and demons to fight Zofis and the one that calls the shots.
- Catch-Phrase: "Kidding!" or in Japanese, "It's a lie!"
- Cool Old Guy: When he's not being a pain in the ass, that is.
- Failure Knight: In his backstory.
- The Gadfly: Many times, when Kido explains something Dr. Riddles had explained earlier, Dr. Riddles will just exclaim his Catch-Phrase.
- Heroic B.S.O.D.: When Kido finds him, the doctor is sitting in a mansion, surrounded by shelves of books and doing nothing with his knowledge. Then we find out why...
- Insufferable Genius: "I'm Professor Riddles, the one who knows ALL!" Even Teen Genius Kiyo is annoyed. Especially Teen Genius Kiyo.
- Jerk with a Heart of Gold: He's an incorrigible troll, and delights in insulting Kiyo even as he's gathering heroic demons to face the Big Bad. Kiyo is left wanting to both strangle him and thank him.
- My Greatest Failure: The reason he was sitting around doing nothing? He used to be a surgeon. Then he failed to save a child, and the guilt drove him into seclusion. In the original, the child's also his grandson.
- Team Dad: Particularly for Kiyomaro.
- Troll: He's always winding Kiyo up.
Vincent Bari & Gustav
Voiced by: Ryotaro Okiayu (Vincent Bari, JP), Unshou Ishizuka (Gustav, JP), Wally Wingert (Vincent Bari, En), Crispin Freeman (Gustav, EN), Jorge Saudinós (SP, Vincent Bari), Miguel Ángel Garzón (SP, Gustav)
- Armor-Piercing Question: Gustav, to Bari: "What kind of king do you want to be?"
- Badass Mustache: Gustav.
- Barehanded Spell Block: Very casually to his own spell after it hit Rashirudo. And after being hit by it a few times, he simply punches Zakeruga out.
- Blood Knight: A mild deconstruction. Prior to his fight with Gash, fighting was the one thing Bari liked but without a propose beyond that he was growing more and more dissatisfied with his life. He began to gain purpose after fighting Zatch.
- Cool Old Guy: Gustav
- Covered in Scars: After his battle with Elzador, Bari is littered with scars all over. He even lost one of his horns.
- Death Glare: His 'strong eyes' that drive Keith up the wall
- Defeating the Undefeatable: Keith considers his fight with Elzador to be this. Bari chides Keith for not having the guts to think it was possible.
- Determinator: Proves himself to be one when facing an enemy far stronger than even himself.
- Everything Is Better With Spinning: His spells are all have a twister theme.
- Face of a Thug: Even his neutral expression is intimidating. Hell, even his smiles are usually terrifying.
- Flight: When firing his spells from behind.
- Get a Hold of Yourself, Man!: To Gash.
- The Gift: As noted above, Bari is of no spectacular origin, nor did he receive any training from anyone prior to the start of the battle for king. He is a naturally powerful demon.
- Heroic Sacrifice: Takes Zatch's place in a death-trap because he respects the little guy too much to let him take the fall.
- Knight of Cerebus: The first and one of the few mamodos to outright defeat Kiyo and Zatch, even taking their strongest spell while only suffering cosmetic damage. The only reason he doesn't burn their book is because their fight showed Bari a purpose for his life beyond mindless battles and he decides to have a rematch with them later. Likewise, their first real defeat subsequently leaves both Kiyo and Zatch in a slump for some time after.
- Manly Tears: During his Heroic Sacrifice
- Slasher Smile: Pretty much the only kind he is capable of.
- When He Smiles: Although he gains a more tender, genuine smile as his restless anger subsides.
- Smoking Is Cool: Gustav.
- Stealth Mentor: Gustav pretty much manipulated the entirety of the fight between Bari and Gash to teach Bari that he needs to be motivated.
- Super Reflexes: Dodged Zakeruga from point blank range.
- Super Strength: To such a degree that one strike from his hand does more damage than an spell from one of the stronger enemies in the Fudou arc.
- Tears of Fear: When facing Elzador's overwhelming strength. But Bari overcame his fear to emerge victorious .
- The Unfought: He never got his rematch with Gash, instead pulling a Heroic Sacrifice to save Gash and others trying to stop Fudou.
- This is a Drill: Generally, his spells revolve around twisters, but a couple of his spells concentrate them into drills on his arms.
- Took a Level in Badass: Yes, even further.
- Took a Level in Kindness: After his Character Development, Bari became much more kind to others.
- Training from Hell: What do you do when you want to get stronger? Well, if you're Bari you go challenge a freaking dragon, that's what you do. He fought Ashuron's brother one-on-one and won.
- The Worf Barrage: The first mamodo shrug off a direct hit from Baou Zakeruga. It provokes an understandable Oh, Crap! moment from Kiyo since, up until now Baou Zakeruga has proven able to one-shot any mamodo they've come across and also drained Kiyo of all his heart energy, leaving them unable to cast anymore spells.
- Worthy Opponent: To Gash and Kiyomaru.
- You Could Have Used Your Powers for Good: Delivered to Bari by Gustav at the end of his battle with Zatch, pointing out that for all of Bari's natural power, all he does with it is going around picking fights with any mamodos that he comes across rather than seeking a higher goal. It ultimately convinces Bari to spare Zatch and decide on a new goal of becoming the strongest king that has ever lived. He ultimately doesn't become king but Gustav at the end notes that Bari had become a strong mamodo capable of striking even a king.
- Bad Powers, Good People: Played mostly straight. Her powers are mainly on powerful offensive capabilities. The end implies she has moves that allow her to protect people; her strongest allowing people to survive in space.
- The Berserker: The effect of her master Shiori's spells.
- The Gwen Stacy: To Zatch. Her situation is almost Zatch's entire motivation for wanting to be King.
- Superpowered Evil Side: Kolulu was saddled with one to make sure that she was willing to fight.
- We Hardly Knew Ye: Lasts a single episode/chapter.
- Healing Factor: It's his one ability and is easily the most powerful healing spell in the series.
- Good Thing You Can Heal: Danny makes virtually no effort to defend himself against automatic fire, knowing full well that his spell will do away with the damage immediately.
Voiced by: Kenta Miyake (JP)A large, animal-like mamomdo who is a friend of Zatch's from the mamodo world. Despite his scary exterior, he's a nice guy concerned with helping his partner Kyle overcome his timidity.
- Badass Normal: Effectively, since Kyle was to scared to cast spells Rein had to beat any challengers barehanded.
- Gentle Giant: He looks pretty terrifying, but he's just as kind and gentle as Zatch.
- Heel–Face Turn: In his backstory. He was originally a violent, rampaging demon who was feared and hated. Once, he severely injured himself, and despite his threats, Zatch brought him back from the brink of death. Afterward, Rein reformed.
- Made of Iron: Having to fight without spells, Rein has no real defense against other demon's spells besides enduring them.
- Shapeshifting: Can also take human appearance.
Voiced by: Junko Takeuchi (JP), Michael P. Greco (EN)A young, tough-acting demon with a good heart. He's not interested in fighting so much as finding a certain someone.
- Big Sister Worship: Towards Cherish.
- Bystander Syndrome: Ted refuses to help out against Zofis's army, saying it's not his problem.
- Chekhov's Gunman: He first appears as a silhouette during an extra chapter depicting Professor Riddles's attempt to get help against Zofis's army.
- Good Old Fisticuffs: His weapon of choice. Unlike many other demons, Ted has no true attack spells. Instead, he gets . . .
- Super Mode: Ted's gears. They can only be used in sequence, one at a time, and each raises his speed and strength to formidable heights.
Earth & Elly
Voiced by: Hideyuki Umezu (Earth, JP), Konami Yoshida (Elly, JP)
- Antagonist Abilities: He has the ability to drain people's energy through his sword and somehow this skill seems less effective when he's fighting alongside the heroes than it was being used against them.
- Better to Die than Be Killed: Elly would rather die from Riou's curse than allow Faudo to be awakened, since Faudo will destroy the world and kill her anyway.
- BFS: His spells all make use of his sword. Some get quite large.
- Iaijutsu Practitioner: The Jerudo Ma Sorudo spell is a powerful Iai attack that can be held back and released instantly when the enemy gets within range.
- Knight in Shining Armor: His appearance is a spot on match and Earth comes from a clan that upholds the demon world's laws. While in the human world, he makes a point of investigating what he believes to be threats to either world, such as Baou and Faudo.
- Knight Templar: Eventually mellowing.
- Littlest Cancer Patient: Elly
- Spotting the Thread: Earth claims to be going for a walk, but Elly notices he's bringing the book with him and concludes an enemy is nearby.
- Storm of Blades: In the manga, the Varusere Ozu Māru Sorudon spell.
- Worf Effect: gets beaten by Goomu to showcase how dangerous he is and by extension how dangerous the much stronger Clear is.
- Worf Had the Flu: Elly was having a particularly bad attack of her disease at the time and they were out of medicine.
Riya & Aleshie
- Badass Normal: Aleshie can fight a demon in hand to hand combat with reasonable success.
- Death Seeker: Aleshie, though only briefly, so that his power could not be used to unseal Faudo.
- Determinator: Aleshie can keep fighting through a curse that ought to be keeping him at death's door. He says he's had worse.
- Ridiculously Cute Critter: Riya's tellytubby-esque appearance qualifies.
Karudio & Sauza
- An Ice Person: Karudio has ice powers, in contrast to Ponygon's fire.
- Big Brother Instinct: Sauza sees his little sister in Elly, they are unable to team up properly until he stops trying to protect her.
- Harmless Freezing: Surprisingly, a subversion. Karudio's final spell produces such sheer cold that it's even dangerous for himself.
- Heroic Sacrifice: Uses a spell that will freeze even himself to death to stop Faudo's heart demon. Sauza burns the book before he can expire.
- Teeth-Clenched Teamwork: With Earth and Elly, at first.
Ashuron & Riin ViseAshuron first makes his appearance as one of the final ten demons in the fight, an incredibly powerful dragon. After testing Zatch in battle, he reveals that he is seeking to defeat Clear Note, an evil demon with considerable strength of his own.
- Giant Flyer: Of the dragon variety.
- Impaled with Extreme Prejudice: Almost stabs Clear Note in two using his horn and his ultimate spell.
- Madeof Iron: Can No-Sell all but Clear's most powerful attacks.
- Playing with Fire: The fire breath you'd expect from a giant dragon.
- Our Dragons Are Different: Specifically, huge (even when children), intelligent, can become human, and love sake.
- Shapeshifting: Like Rein before him, he can take human form, though it's still pretty freaky.
- Super Speed: His ultimate spell, Shin Feiuruku, enables supersonic flight speed in a straight line.
- Too Fast to Stop: When using his ultimate spell, he has a bit of difficulty when it comes to maneuvering.
- We Hardly Knew Ye: Built up as the Big Good of the final arc. Sent back about a quarter of the way into it.
Cherish & Nicole
Voiced by: Ai Nagano (Cherish, JP), Sayaka Aida (Nicole, JP)The demon girl who Ted is looking for, and the one who inspired him to defend people who are too weak to defend themselves. Her powers revovle around Crystals.
- Broken Pedestal: Albeit subverted.
- Cool Big Sis: How Ted and the other kids from the demon world regard her.
- Fear of Thunder: Really bad case of it, from Zeon torturing her with his lightning.
- Gemstone Assault: The Kofaru spell family.
- Little Miss Badass: She's tough enough to rank pretty high in the Faudo cult's hierarchy. She even gives Zeno pause for a while.
- Magic Mirror: Two of these were apparently summoned by the Gurādo Ma Kofaru spell in the manga. Cherish uses them for exit portals for the projectiles of the aforementioned spell. Basically allows her to fire from three different locations without moving.
- Samus Is a Girl: Ted actually believed that Nicole was a boy when he met her by the first time, due of the clothes she was using.
- Small Girl, Big Gun: The Gurādo Ma Kofaru spell in the manga. Still fires diamonds.
Suzume Mizuno/Suzy Mizuno
Voiced by: Tomoko Akiya (JP), Colleen O'Shaughnessey (EN)Kiyomaro's friend from school, she's ditzy and cheerful and has a huge crush on him. One of the first friend Kiyomaru has.
- Betty and Veronica: Betty to Megumi's Veronica.
- Brainless Beauty: Downplayed; she's cute, but in-universe she's considered rather plain.
- Butt-Monkey: When bad things aren't happening to Kiyo, it's because they're happening to her instead.
- Cloud Cuckoo Lander: Hooooh boy.
- Cute Clumsy Girl
- Damsel in Distress: At the beginning of the series as part of Zatch's plan to make Kiyo a hero.
- The Ditz: The planet she's on hasn't been discovered yet.
- Genki Girl
- Girl Next Door
- Nice Girl:
- No Sense of Direction: Doesn't help that she's a scatterbrain.
- Ordinary High-School Student: As ordinary as she gets, anyway.
- Plucky Comic Relief: She does try her best. But the world has it out for her.
- Plucky Girl: She's as feisty and tenacious as she is ditzy.
- Static Character: She gets zero character development, never wavering from her role as comic relief.
- Unknown Rival: To Shion Hibiki and Megumi.
- Yandere: Played for Laughs. And to be fair, she's still not all that bad (ex: she was jealous of Filler Arc girl Shion and considered her a rival for Kiyo...but at the end, when it's announced that Shion has transferred out of the school, she's actually genuinely sad about Shion's departure.)
- Arch-Enemy: To Sherry and Brago.
- Bad Boss: All of his minions, and even Koko, are just tools for him to become king.
- Big Bad: Of the first major arc, at least.
- Big Eater: Like all Mamodo, but in Zofis' case, he prefers huge feasts fit for a king, which mirrors his personality and ambitions. Also, unlike other Mamodo such as Zatch or Brago, Zofis doesn't scarf down his meals like an animal. Quite the opposite, as shown in ep.69.
- Combat Pragmatist: At one point he announces his arrival by blasting another demon's book before they even knew he was there.
- Dirty Coward: Hides behind his army of Thousand-Year-Old mamodo. When Brago finally confronts him, he spends most of the battle running away, and when he's finally taken down, he's a teary mess.
- Dude Looks Like a Lady: His face, his colored fingernails, his outfit, and even his voice (to an extent) make his gender somewhat ambiguous to viewers. But all the characters can tell he's male.
- Evil Sorcerer: Unlike most Mamodo, Zofis has powers that go far beyond his book spells.
- Expy: His look, voice, personality, and even his attacks are very reminiscent of Freeza.
- Failed a Spot Check: Subverted. Zofis, despite his strong perceptive abilities, somehow completely missed that Brago had intercepted the spell Zofis had shot at Sherry when they first met. Brago finds this hard to believe and comes to the conclusion the Zofis had indeed noticed him and run away rather than fight.
- Faux Affably Evil: And he can just barely manage that.
- Inferiority Superiority Complex: There are hints that he felt inferior back in the mamodo world, but as the Big Bad, he styles himself like the king he intends to be.
- Knight of Cerebus: The series takes a notably darker turn during his arc, and he's one of the first villains to have absolutely nothing funny about him.
- Manipulative Bastard: Literally; he has the power to manipulate the hearts and mind of humans and Mamodos alike. Even when he has to use mundane methods like against Sherry, he displays a through understanding of how to mentally break people.
- Smug Snake: He actually is incredibly powerful and can do things such as fly, teleport, and mentally dominate others without the use of his book. But faced with someone he knows is his equal or superior and he isn't so smug.
- Stuff Blowing Up: His powers are centered around explosions.
- Tyrant Takes the Helm: His ultimate goal is to become king of the Mamodo world and rule with an iron fist. He fails
- Villainous Breakdown: He starts losing his composure when Brago and Sherry enter the conflict. Them singlehandedly defeating his army, Brago's spell actually hitting him, and Sherry becoming immune to his manipulations all push him farther into breaking down. By the time Brago threatens to hunt him down in the demon world, he's reduced to a sobbing wreck.
- Affably Evil: Rarely loses her cute, smiling demeanor even when she's being evil.
- Break the Cutie: Her backstory. Zofis is able to use this to his advantage. . .
- Broken Pedestal: It seems this way at first, when Koko, under Zofis' control, tries to break Sherry's spirit by revealing that she actually hates Sherry and is a truly evil person all on her own. Subverted in that, in the end, this really is all a trick of Zofis', and Koko really is the good friend Sherry remembered her being.
- Childhood Friends: With Sherry.
- Cuddle Bug: A villanous example: Koko sure likes to hug Zofis from behind. But the fact that she's brainwashed the whole time, however, makes it all look very creepy and squicky.
- Laser-Guided Amnesia: Zofis removes all memories of her actions while evil. He refuses to do so until Brago tells him that if he doesn't, he will personally make Zofis' life in the demon world a living hell.
- Mind-Control Eyes
- More Than Mind Control: Zofis attempts to convince Sherry it's this. It almost works. Zofis also attempts to invoke this: unlike other people whose minds Zofis simply controlled, Zofis created an entirely different personality out of the dark feelings in Koko's heart so that she would be his bookkeeper. Zofis restores her heart to normal after he gets beaten.
- Put on a Bus: Despite her being Sherry's initial reason for fighting, she totally disappears after Zofis is sent back. Justified, in that she goes off to college and Sherry wouldn't want to remind her of the battle anyway.
Riou/LeoA four-legged beastlike demon who seeks to resurrect the giant demon Faudo for his own goals.
- Animal Motif: Lions. His spells also have a beast theme.
- Arch-Enemy: Comes to view Kiyo as his main enemy out of everyone opposing him.
- Big Bad: Of the Faudo arc
- Cast from Hit Points: His curse hurts him just as much as it hurts the victims.
- Clown Car: You know that mouth on his chest? His partner's in there.
- Dangerous Forbidden Technique: His final spell turns him into a giant berserk beast. He's still no match for Zeno.
- Even Evil Has Standards: Having been beaten by Zeno, Leo gloats to him that his goal to take over Faodo is a futile one, as he's armed a failsafe device that will send Faudo back to the Mamodo World. Zeno simply smirks and says he'll just wreck the device then, visibly horrifying Leo - he'd intended to use Faudo to win the tournament, not destroy the world, which leaving him in the human realm would inevitably do. Not that he's in any position to argue, as Zeno immediately sends him back.
- Funny Afro: Has one that resembles a lion's mane. Zeon grabs onto it to be taken into the control room with Riou.
- Hero Killer: Kills Kiyo, for a time.
- Hijacked by Ganon Mid-way through the Faudo Arc, Zeno takes over and sends Riou back to the mamodo world
- Unstoppable Rage: Aforementioned final spell.
- Weapon of Choice: His staff.
- "Well Done, Son!" Guy: We find out in flashback that everything he did was due to the pressure of representing his family in the tournament, and he was seriously conflicted about some of the things he did.
- Worf Effect: Defeats Zatch and Kiyo, then is beaten by Zeno to show how dangerous he is.
Voiced by: Urara Takano (JP), Debi Derryberry (EN), Sara Vivas (SP)A demon with strong electrical powers who looks uncannily like Zatch. He's tied to the loss of Zatch's memories.
- Adaptational Villainy: In the manga, Zeon does start out rather dickish but as the battle goes on we start to see he does have a noble side and that his actions were purely driven by jealously which he eventually overcomes once he sees Zatch's past. In the anime, no such development exists, he's evil through and through and has nothing but contempt for Zatch to the bitter end, even when he's beaten. This was because the author had broken his hand as he was in the midst of the story arc and the anime rapidly caught up before he could do the battle between Zatch and Zeno. So the animation staff just had to go with anything and just ran with what they had.
- Arch-Enemy: To Zatch
- Big Bad: For the last half of the Faudo arc, and for most of the series seeing as he's the one who removed Zatch's memories.
- Blood Knight: Zeno is very ruthless and it was something he inherited from his father. This reason is exactly why King Bell gave Bao to Zatch. Bao consumed so much darkness, the spell became dangerous and Zeno, possessing his father's wrath, would've been consumed by it. Contrast this to Zatch, who not only manage to resist it, but purify Bao.
- Cain and Abel: The Cain to Zatch's Abel.
- Charles Atlas Superpower: His spell selection is similar to Gash's, meaning his feats of extreme strength and speed come from pure physical training.
- Evil Albino
- Evil Twin: Of Zatch, natch. Literally.
- Exotic Eye Designs
- Flash Step: Spams this, often to get behind opponents.
- Freudian Excuse: His grudge against Zatch? He believed that, since Zatch got the incredible power of Bao, and he himself had to go through Training from Hell, that his parents favored Zatch. His Heel Realization hits when he realizes Zatch's bad past yet never waivered from his kind self while also learnign Zatch was given Bao to protect Zeno from it.
- Hard Work Hardly Works: Part of what drives him. He feels driven to surpass Zatch's Bao Zakeruga with his own power, born from his Training from Hell. If he can do so, he'll prove to himself that the suffering of said training was actually worth something. He actually is stronger than Zatch, but he loses because Zatch matches his and Dufort's suffering and the power coming from it with the care from his friends, empowering Bao.
- The Heavy: His actions kickstart the plot, and he's the driving force behind the second major arc of the series.
- Heel–Face Turn: His last act in the human world.
- Ignored Epiphany: He sees fragments of Zatch's memories, revealing bits of Zatch's past along with the horrific might of Bao. He seemingly shrugs it off though he eventually realizes he was in the wrong. Furthermore, he confessed that if he did win, he would've destroyed Zatch's book to prevent Bao from consuming him.
- Kick the Dog: Beating Rops was all part of the competition, but he rubs it in by having Dufort Zeker the already burning book, destroying it instantly so Rops doesn't have the chance to give his bookkeeper a farewell.
- My God, What Have I Done?: Starts undergoing one when he catches a glimpse of Zatch's memories and seeing the corrupted form of Bao. Finally hits it when defeated and sees Zatch's unpleasant past. Sums it up as such: "Forgive me, Zatch. Your brother has been a fool."
- Out of Focus: He's introduced in one scene and then later we find out he burned Rops' book...and then we don't hear from him again 'til the second arc.
- Pet the Dog: Seeing Rodeaux being willing to risk his life to attack him, Zeon tanks the hit rather than dodge it.
- The Power of Hate: His suffering along with the hate from Dufort resulted in his ultimate spell. He and Dufort were released from it when Bao ate the spell.
- Shock and Awe: Just like Zatch, although he's far more competent with it.
- Slasher Smile: Very fond of these.
- Smug Super: Fond of using only the bare minimum of force to counter his enemies' spells. This still comes off as him showing off though, since he's beating them with spells that ought to be much weaker than theirs.
- Tyke Bomb: Trained from when he was three to be a candidate for king.
- White Hair, Black Heart
- You Cannot Grasp the True Form: Of Baou Zakeruga. Not until he sees Gash and Kiyomaro nearly devoured by its power, he doesn't.
- Ask a Stupid Question...: Given his Answer Talker power, asking him how he knows something causes him to respond with derision.
- Awesomeness by Analysis: His Answer Talker ability.
- Blue and Orange Morality: He considers the lives of human beings to have no more importance than the lives of flies. Since no one cares if a fly dies, he figures it doesn't matter if people die. He admits that most people would probably disagree with his assessment.
- Came Back Strong: Implied. He indicates the Answer Talker comes from dying then coming back to life.
- Evil Albino: Much like his partner, although not quite as pale.
- Freudian Excuse: Dufort was raised in a lab environment from childhood, treated cruelly and anyone kind to him was removed. After years of torment and testing, he was given one final battery of tests that opened the path to his release, all while taunted by the scientist who had ruled his life. Turns out that A)His Answer Talker was being used for military application, B) He was being released into the Arctic to die rather than being freed, and, oh, C) His mother sold him for ten thousand dollars. Teaming up with Zeon doesn't seem so far-fetched, considering...
- Nerves of Steel: He jumps off a pillar at least three stories tall without flinching, confident Zeon will catch him.
- Not Good with People: He's very bad at even carrying on a conversation. Justified, seeing as the only human interaction he's had was through a computer screen.
- Not So Different: To Kiyo Takemine; drives the point home in the Anime when he mind scans the former commenting about his years of jealousy fueled neglect received both from his peers and his teachers in life, comparing it to his own harsh lab rat days in the asylum he'd been incarcerated in.
- Psychic Powers: In the Anime; Dufort had vast psychic powers for which he was poked and prodded within an undisclosed facility most of his life for.
- The Mentor: During the Clear Note arc, he helps the remaining protagonists bring out their greatest potential via his use of the Answer Talker.
- The Power of Hate: His Answer Talker ability was honed through pure hatred. It's implied his immense amount of heart power comes from this hatred as well.
- Skewed Priorities. He cure a child's fatal disease because the boy's family's wailing was keeping him from getting any sleep.
- The Stoic: He's rarely seen with so much as a twitch.
- Not So Stoic: Was angered so much when Apollo asked how much hatred he was hiding to the point where he attempted to finish him and Rops off with a 'Giga' level spell, until Zeon convinced him otherwise. He is also moved to tears when he sees Zatch taking in his suffering to free him from it.
- Straw Nihilist: Given his past, it's no surprise. Character Development frees him from this.
- Walking the Earth: After Zeno's gone, he decides to wander.
Clear NoteThe final villain of the series, an incredibly powerful demon who lives for destruction.
- Anti-Magic: The Supurifo spell family.
- BFG: The Zarefedōra spell creates a gigantic artillery cannon which doubles as a projectile.
- Big Bad: Of the last arc.
- Bishonen Line: Played straight with first, then averted with his One-Winged Angel form.
- Creepy Child: All Mamodo are children, but Clear Note looks the most human of them all.
- Dem Bones: The Bādorerugo spell conjures a giant, white, winged doll, which looks like a dragon skeleton.
- Evilutionary Biologist: He claims his existance and intentions to be the natural result of evolution.
- Generic Doomsday Villain: He's an extremist nihilist whose goals are the destruction of the human and Mamodo worlds and then suicide. he's also never so much as mentioned prior to his arc.
- Invincible Villain: His first appearance; he hands Brago his first and only non-friendly defeat, destroys the full-power Baou Zakeruga, and nobody but Ashuron is able to lay so much as a finger on him (Brago pitched in at one critical moment, but only because Vino was out of energy). Interestingly enough, the fights with his various powered-up forms are much more even thanks to the heroes also getting much stronger.
- Light Is Not Good
- No-Sell: The Supurifo spell family, as mentioned above. Unlike other defensive spells, they don't stop attacks as much as they directly cancel their effects or make them dissapear.
- Omnicidal Maniac: To its logical extreme.
- One-Winged Angel: Ends up with two such forms, each giving him an ungodly amount of power.
- Person of Mass Destruction: He compares himself to a nuke.
- Physical God: His final form ends up this way.
- Powered by a Forsaken Child: We never find out anything about Vino, the baby who wields Clear Note's spellbook.
- Power of the Void: The Radisu spell family.
- Pure Is Not Good: It's implied that the reason he's so powerful is that his bookkeeper is a baby and can thus supply completely "pure" heart energy.
- Recursive Ammo: Bādorerugo can shoot its hands which seperate into smaller parts. Every tiny part contains the Annihilation effect of the Radisu spell family.
- So Last Season: Does this to his predecessors as Big Bad by virtue of his methods: he kills his opponents. As nasty as they were, even Zeno and Zofis were simply content to send them back, but not Clear.
- White Hair, Black Heart
- With Great Power Comes Great Insanity: His current looks, goal and power level comes from him being controlled by his own spell, Shin Clear Seunousu.
- The Worf Effect: Delivers Brago the only one of these he ever gets. Brago, after training, returns the favor to his first One-Winged Angel form.
Hyde/Haido & Eido/Eita Kubozuka
Voiced by: Megumi Urawa (Hyde, JP), Hiroshi Kamiya (Eido, JP)The anime's very first villains. Hyde is an ambitious mamodo with wind powers, while Eido is a slacking loser.
- Blow You Away: His spells are wind-based.
- Cool Board: Eido sports a cool way, skateboard included, though according to Hyde he is just a poser.
- Friendless Background: Eido and probably Hyde as well.
- Minor Major Character: They are the first villains of the series, one of the few teams who managed to get a fair draw with Zatch and Kiyo, and also get an interesting bit of Character Development in their second and last episode, which appears to set them as important rivals or Foils to the protagonists in the future. However, after a mere cameo in one of Megumi's concerts, they never appear again in the series.
- What Happened to the Mouse?: They disappear after their second apparition (which only happens in the anime). As they aren't present at the King Festival, it's clear that they were defeated and their book burned at some point, but how or by who remain unknown. Later, Hyde does an apparition at the end of the manga, assisting Zatch with his final attack on Clear Note and later at school in the mamodo world.
Papipurio & Lupa
Voiced by: Michiru Yamazaki (Papipurio, JP), Chihiro Sakurai (Lupa, JP), Sam Riegel (Papipurio, EN), Dorothy Elias Fahn (Lupa, EN)
- Born Lucky: Manages to get into the last ten mamodo despite being absurdly weak.
- Gonk: Both of them.
- Heel–Face Turn: They were never really evil, but they eventually lose their selfish attitude after being saved by Kanchome.
- No Celebrities Were Harmed: Lupa kind of looks modeled after Whoopi Goldberg from her role in Sister Act.
- Nun Too Holy: Lupa is dressed in a nun outfit but she never acts as such.
- Replacement Goldfish: For Lupa's deceased son.
- So Last Season: Their problem is their spells are always at the level everyone else's were one arc ago.
- Standard Status Effects: Papipurio's spells are full of things like paralysis, itching, and blinding effects.
- Villain Exit Stage Left: Defied. They try to do this to set up a hostage exchange with Kyle, but Zatch just keeps chasing them until they reach the exchange spot.
Patty/Penny & Uri/Ururu
Voiced by: Naoko Matsui (Patty, JP), Kosuke Toriumi (Ururu, JP), Stephanie Sheh (Patty, EN), Stephen Apostolina (Ururu, EN), Ana María Marí (SP, Penny), Alejandro García (SP, Uri)Gash's self proclaimed lover who chase after him for long times. Partner with Uri, a poor man who Patty promised to help take of his hungry family in exchange for helping her find Gash.
- Berserk Button: One look at Zatch is all she needs to go off the deep end.
- Bitch in Sheep's Clothing: Oh sure, she's extremely cute and sweet at first but beneath it she's extremely selfish, vain, ultimately just unpleasant. Also if you make her mad....
- Big Eater: All mamodo are this, but Penny loves sweets in particular.
- Death Glare: A pretty nasty one once something or someone sets her off.
- Distaff Counterpart: To Gash. When she cut off her hair she look almost exactly like him. Their spell mirror each other and notibly "So Giaku" and "Baou Zakeruga".
- Evil Is Petty: She joins in with Zofis simply because Zatch doesn't remember her in the demon world despite the fact he lost his memory. They did try to explain this to her but Kiyo flubbed the explanation making Penny think she was being taken advantage of.
- Goofy Print Underwear: It has pictures of Zatch.
- Heel–Face Turn
- Heroic Sacrifice: Catches Demolt's attention so he would attack her instead of turning Uri to paste. Gash and Umagon keep her from dying, although her book is still burned.
- Important Haircut: Cuts it off to use in distracting Demolt, cementing her Heel–Face Turn. The grand finale shows she keeps the shorter hairstyle.
- Little Miss Badass: In their first fight Penny was actually kicking Zatch's butt for a good portion of the fight.
- Making a Splash
- Our Dragons Are Different: So Giaku, the dragon of water and Shin So Giaku.
- Pet the Dog: Though she was totally selfish and committed illegal acts in order to do this, her helping provide for Uri's family was pretty nice of her.
- Sweet Tooth: See Big Eater
- Spoiled Brat: Subverted in that nobody else does, she pretty much spoils herself.
- Tiny Tyrannical Girl: Though in Uri's case, he just doesn't really bother to put his foot down with Penny cause he knows there's no point.
- Tsundere: Towards Byonko.
- Unstoppable Rage: Zatch can tell you, if you set her off, RUN!!!!, not that running does much good anyway.
- Woman Scorned: At least that's how she sees it in regards to Zatch.
- Yandere: She comes off as sweet and nice at first, if vain. But once she learns Zatch doesn't remember her?Hoo boy. Finally stops being one with her Heel–Face Turn, though.
- You Wouldn't Like Me When I'm Angry: Oh no you wouldn't.
Byonko & Alvin
Voiced by: Yasuhiro Takato (Byonko, JP), Masaaki Tsukada (Alvin, JP), Brian Beacock (Byonko, EN), David Lodge (Alvin, EN), Javier Balas (SP, Byonko), Fernando Hernández (SP)
- Adorkable: That clock Byonko wears? Alvin promised to give him a cookie at three o'clock so Byonko made a fake clock set at that time. It was stupid and cute enough to convince Alvin to participate in the battle to become king.
- Big Damn Heroes: Double subverted. He tries to come from out of nowhere to save Patty from Zatch's Baou Zakeruga, but forgot that Alvin wasn't there to actually cast any of his spells and he gets blasted alongside her. Still, there being two targets instead of one diffuse Baou's power enough that they both survive.
- Cool Old Guy: Alvin.
- Crouching Moron, Hidden Badass: Byonko is pretty much a joke. He only ever shows up to get his ass kicked and Alvin can't even pronounce his spells properly. But once he does, the first thing Byonko does is knock Demolt on his ass.
- Obfuscating Stupidity: Alvin pretends to forget his dentures so he won't have to support Zofis.
- The Unintelligible: Alvin, but he was doing it on purpose as he was well aware of Zofis' evil intentions.
Rodeaux & Chita
- Better to Die than Be Killed: Lets his book be burned rather than be torn apart by the Faudo cells inside him.
- Emotionless Girl: Chita. until Rodeaux tells her to stand up for her true feelings before he vanishes.
- Go Out with a Smile
- Pet the Dog: The speech that Rodeaux gives to Chita before Zeon burns his book, telling her to find her own willpower.
- The Starscream: His intent, but naturally nothing comes of it due to Zeno severely outclassing him.
- Winged Humanoid: Rodeaux.
Voiced by: Ryo Horikawa (JP)
- Alas, Poor Villain: As his book burns, he laments that he wasn't friends with Leo and that after all their hard work, the grand vision they once had was stolen from them with ease by Zeon. His last act is to apologize to his partner for being a handful.
- Anti-Villain: Despite what he says, he's really only in it to help Leo.
- Death Glare: Gives one to Fango. An omake panel reveals he was absolutely seething despite his apparent composure.
- Doomed Moral Victor: He rejects Faudo's power, seeing accepting it as a betrayal to Leo, and his fight with Aleshie is so close he probably would have won with it.
- Enigmatic Minion: His motives remain a mystery, even to himself.
- Eyes Do Not Belong There: He has eyes on all sides of his head and on his palms. They emit the light he needs for his shadows.
- Human Shield: He uses Fango as a shield to survive Aleshie's ultimate attack.
- Living Shadow: His power includes shadow manipulation and creating things made of shadow.
- Teeth-Clenched Teamwork: He and Fango are all but attacking each other despite being on the same side.
- Unfriendly Fire: Fango clips him with one of his spells, badly burning Zaruchim's arm.
- Worthy Opponent: His treatment of Riya and Aleshie, especially Aleshie, is an odd case. The gist of it is that he considers them to be worthy opponents but can't bring himself to admit it, and therefore wants to crush and humiliate them to prove he's the better fighter.
- Villainous B.S.O.D.: Aleshie sent him into one when they first met. After looking into his eyes Zaruchim was left frozen and trembling. Avenging that humiliation is a major motivator for him.
- Villainous Friendship: Leo's defeat pretty much kills his drive. He later laments that he wasn't even friends with Leo, but it's unclear if he's in denial or sad that their businesslike relationship wasn't more personal.
Voiced by: Kenyuu Horiuchi (JP)One of the demon kids who team up with Riou to wake up Faudo, Keith's reason for doing so is mainly to take Faudo's power for himself. He holds a personal rivalrly with Bari.
- Cloud Cuckoo Lander: The guy is nuts
- The Rival: Bari.
- Smoking Is Cool: He has a preference for cigars.
- The Starscream: Until he takes on Faudo's powers, despite his claims to the contrary
- Took a Level in Badass: He gets three powerups from Faudo in his fight with Bari. They doesn't save him.
Goomu & Mir
- The Aloner: Goomu was alone in the demon world and his partnership with Clear is based on Clear being willing to allow him to live so long as Goomu is the only one left.
- Because You Were Nice to Me: The reason behind his Heel–Face Turn.
- Big Creepy-Crawlies: Goomu's appearance is similar to a beetle.
- Dark and Troubled Past: Mir is implied to have been a former moll for the Russian mob.
- Power of the Void: His spell theme. Works slightly different from Clear's and looks drastically different.
- The Unintelligible: Goomu, albeit Mir (and arguably Kanchome) can understand what he is saying.
- You Have Outlived Your Usefulness: As soon as he starts showing misgivings about the Evil Plan, Clear slices him in half, fully intending to kill him. Zatch is able to send him back before he dies.
Thousand-Year Old Demons
GorenAlthough not one of the demons Zatch and company fight, Goren is important because his spell is the one that sealed so many demons into stone in the first place. Did not become king, ultimately, as that honor went to Zatch and Zeon's father.
Laila & Albert
Voiced by: Rumi Shishido (Laila, JP), Kishou Taniyama (Albert, JP), Kate Higgins (Laila, EN), Crispin Freeman (Albert, EN), Valle Acebrón (SP, Laila), Cholo Moratalla (SP, Albert)A young female demon who was trapped in stone for 1000 years. She is the only one who disagrees with Zofi's plans, and helps Gash's group upon their arrival in the Devolo Ruins.
- Deadpan Snarker: Once the stone of moonlight is destroyed, Laila and a now liberated Albert start smack-talking Demolt like there's no tomorrow.
- Horned Humanoid: Laila, who has small horns on her head.
- Little Miss Badass
- Lunacy: Laila's spell theme is geared towards crescent moons.
- Pint-Sized Powerhouse: She's able to throw Demolt around.
- The Stoic
- You Gotta Have Blue Hair: Laila has purple hair.
- Wise Beyond Their Years
- Combat Pragmatist: Jumps the heroes expressly because he knows they are exhausted.
- Groin Attack: Tio pelts his 'little gentleman' with rocks.
- Large Ham: He gives grandiose narration to events even as he accidentally shoots himself with his own spell.
- Trademark Favorite Food: Melons.
- Unskilled, but Strong: He's a complete idiot, but his power is no joke.
- Villain Song: CATCH MY HEART! Very Melon!
- Simple Staff: His spells all revolve around making it longer and stronger.
- Trick Boss: The real threat is his human partner Genzo!
- Ax-Crazy: He's the worst kind of nutcase, the kind with two chair mounted machine guns and magical powers.
- Beware the Silly Ones: He nearly kills Dr. Riddles and is so strong that Kido is forced to sacrifice himself in order to beat him!
- Psychopathic Manchild: To be fair, when you're stuck in a stone tablet alone for a thousand years, you're probably not going to come out mentally unscathed.
- Younger Than He Looks: In the final chapter he's introduced as a new classmate of Zatch. Yes, despite his appearance, Belgim is actually six years old.
Voiced by: Yoko Matsuoka (JP), Katie Leigh (EN), Alicia Sainz de la Maza (SP)
- Anti-Villain: Unlike the other 4, all he wants is to not be turned to stone again by Zophis.
- Brick Joke: Remember that stone Kiyo found and did all those weird things to...? He remembers it all.
- Fatal Flaw: He considers it to be his compassion, as back during his war he could have beaten Golem if he had been distracted by an obviously faked hostage.
- Hyper Awareness: Is able to accurately attack his enemies just off the sounds they make while an entire floor below them.
- Star Power: His main ability is manipulating star-shaped drones. They do everything from firing lasers, blocking attacks, and powering Pamoon up.
- Redemption Equals Death: After he loses and decides to fight with Zatch, Zophis appears and burns his book.
- Blood Knight: He laughs after being hit in the face by Ponygon and Zatch.
- The Brute: Plays this role much better due to his lack of intelligence. until his master unintentionally activated the spell to boost his intelligence.
- The Berserker: Described as one.
- Catch-Phrase: Refers to a lot of things as "depressing."
- Dangerous Forbidden Technique: His final spell. Not for him, for his master since it makes Demolt intelligent enough to stop taking orders.
- Discard and Draw: His final spell greatly boosts his power but he doesn't use any other spells during it's duration. Whether this is because he's incapable of doing so or because him eating his master prevented any spell calling is unclear.
- Dumb Muscle: He's supposed to be this. The fact that he's actually fighting strategically is what clues Laila in to the fact that his partner isn't controlled.
- Informed Flaw: Laila says Demolt is supposed to be too stupid to fight well, but he's not that bad. He might have let Zatch's Zakeruzem hit him the first time (and then Zakurga'd his arm with a painful explosion), but after that, he figures out its effects just as quickly as Kiyo and dodges all attempts made on him. Until Laila and Albert restrict his movement, that is.
Voiced by: Shihomi Mizowaki (JP), Michelle Ruff (EN), Valle Acebrón (SP)Zatch's number one nemesis who bullies him throughout the story and is the only one that he can't defeat.
- The Bully: She lives to torment Zatch. And she's pretty good at it too, considering that he could pretty much turn her inside out if he really wanted to.
- Gonk: Could easily be mistaken for a demon herself (and in fact, Bari thinks she's one at first).
- Hidden Heart of Gold: She will taunt Zatch, torture Zatch, and make his life a living hell...but the one and only time he's actually in danger, she helps him without hesitation, with great risk to herself.
- Jerk Ass: She doesn't really have a reason to bully Zatch as brutally as she does; she just seems to be sadistic. Although...
- Loving Bully: It's heavily implied that Naomi constantly bullies Zatch as a way to show that she really likes him.
- Gag Boobs: The reason for her existence is for us all to have a laugh at her weirdly-shaped body and comically over-sized breasts.
- Gonk: Her face and limbs makes her look nothing like any normal human in the show.
Voiced by: Mari Adachi