Covers the Monster Rancher anime cast.
The heroes of the story, a group seeking to find and unlock the Phoenix.
Our excitable Hero, who gets transported to the series world by a prototype game, something he takes extremely well, all things considered. Brash and impulsive, but his boundless energy and enthusiasm can prove catching.
- Ascended Fanboy: He was a fan of the games, and then goes inside one.
- Badass Normal: Being only human, he obviously doesn't have any special attacks like monsters. That doesn't stop him from fighting right alongside them.
- Character Development: He's pretty rash and dumb in the first season, but by the third he's grown into a seasoned fighter and mature young man who's learned the value of strategy as well as strength.
- Cherry Blossom Girl: A male example alongside Mocchi. Genki's last name, Sakura(佐倉) is a homophone with the word Sakura(桜) which means cherry blossoms, which are a symbol of death and rebirth.
- Curtains Match the Window: Brown eyes, brown hair.
- Determinator: Is he ever.
- Deus Exit Machina: Gets separated from the others a few times, typically to set up his Big Damn Heroes return.
- Dub Name Change: The dub changes the Japanese on the envelope Genki receives in Episode 1. Now in English, the mail address lists him as "M. Genki" of "Allenville". However, the dub dialogue never changes Genki's family name, nor does it ever suggest that Genki doesn't live in Japan.
- Empowered Badass Normal: He's seen focusing energy in order to attack, as well as transferring it to others and putting it into his attacks. Later on it is shown he can launch Combined Energy Attacks and, in the last two episodes focus the energy of everyone they know, combining the bodies of several of his friends and reviving the Phoenix.
- Face Death with Dignity: Best illustrated during "Magic Stone Mayhem" when most of the Searchers are cornered and about to be executed via firing squad; while everyone else flinches, he just stands there glaring.
- Foreshadowing: Could he actually be part of the Phoenix? Not exactly.
- Hope Bringer: Helps inspire Golem, Tiger, and Hare to fight Moo.
- I Just Want to Be Special: He really wanted to visit the world of Monsters.
- Jumped at the Call: He may not have been expecting to be sucked into the game world, but he sure doesn't have any issues with it. Particularly the second time around.
- Just a Kid: Gets this reaction at first.
- Keet: As his name states, he's full of boundless energy.
- Kid Hero: Stated to be 10.
- Meaningful Name: He even tells the others outright "[My name] means energy, and I've got lots of it!"
- His last name, Sakura(佐倉) is a homophone with the word Sakura(桜) which means cherry blossoms, which are a symbol of death and rebirth.
- The Power of Friendship: Firm believer in this, and very good at rallying the others.
- Rollerblade Good: His rollerblades were sucked into the game along with him, and he grows very adept at fighting with them on (though he doesn't need to wear them to rumble. They just provide a very good speed boost for him. Plus, you know, impacts connect a lot harder with wheels on).
- Super-Strong Child: For a pre-teen, Genki can carry Pixie or Holly without effort, fight monsters with his fists, and lift a boulder over his head.
- Trapped in Another World: Much to his delight.
- What Beautiful Eyes!: His eyes are stated to be very clear and honest.
- Would Hit a Girl: He has no problem fighting female monsters.
A young woman who has been searching for the legendary Phoenix with the help of her best friend Suezo and the Magic Stone, a mysterious pendant which acts as a sort of magical compass, pointing out the way they should travel. Acts as The Heart of the Searchers — all of them have joined her quest, and she in turn keeps their very different personalities from clashing to the point of tearing the team apart.
- Action Girl: While she doesn't charge into battle all the time like Genki, she does defend herself and her friends several times.
- Curtains Match the Window: Brown eyes and hair.
- Distressed Damsel: She is kidnapped by Moo during the first season, during which time she learns about her father serving as his vessel. The guys rescue her in the next episode.
- Doomed Hometown: We see how it was destroyed in episode 8; this prompted her search for the Phoenix.
- The Heart: Keeps the team from clashing quite often.
- Luke, I Am Your Father: Her father is Moo's vessel.
- Memento MacGuffin: Along with the Magic Stone itself, she also obtains a dagger originally owned by her father.
- Mineral MacGuffin: The Magic Stone, which she wears as a pendant.
- Only One Name: Her last name is never revealed.
- Silk Hiding Steel: She may act as The Heart, but she is not a pushover; "I don't want to fight, but I will!" It's just that she never gets a chance to fight as the rest of the time take care of the battles.
- Skirt over Slacks: Wears these.
- Taking the Bullet: Sets the main plot of "Run, Tiger, Run!" into action when she shoves Tiger out of the way of a Black Worm's poison spike.
- Took a Level in Badass: She can hold her own against weak thugs, but given how nasty the Baddies the Searchers face are Holly normally has to stay back. Later on though, she goes from hanging back to pulling a dagger on one of the Big Bad Four.
- Tragic Keepsake: Both the Magic Stone and her father's dagger.
- Troubled Backstory Flashback: A good chunk of Episode 8.
A cute pink monster unlocked from Genki's game disc. While the others are initially concerned that bringing along a newly born monster on such a dangerous quest isn't the best idea, Mocchi grows into one of the team's best battlers, as well as Genki's best friend.
- Badass Adorable: Incredibly cute, also becomes one of the strongest monsters in the show.
- Brought Down to Normal: During the third season, he has to relearn most of his attacks.
- Cherry Blossom Girl: A male example alongside Genki. Mocchi uses cherry blossoms to attack and is associated with them, and the death-rebirth aspects come into play in the second and third seasons.
- Cherry Blossoms: His Cherry Blossom Blizzard attack. Cherry blossoms also become his symbol, and the death/rebirth aspects come into play during the second season finale/third season opening.
- Crossdressing Voices: Janyse Jaud voiced him.
- Deus Exit Machina: Ends up on the awkward side of one when the entire rest of the team pulls one during "The Mocchi Cannon".
- Just a Kid: Gets this reaction along with Genki.
- Pokémon Speak: Averted; he appears to use this at first, but it turns out to be a very heavy Verbal Tic.
- Ridiculously Cute Critter: Mocchi is adorable.
- Third-Person Person: "Mocchi hungry!"
- Took a Level in Badass: Goes from being just a baby to one of the team's strongest members.
- Verbal Tic: "Chi!"
- Wave Motion Gun: The Mocchi Cannon.
Holly's partner/best friend. She tends to spoil him quite a bit and didn't really focus on training him to fight; as a result, he isn't as strong as his species can be, though that doesn't stop him from doing his best to protect her.
- Awesomeness by Analysis: In season 3, Suezo is able to learn Poritoka's ultimate technique by seeing him use it once. He uses it against Mocchi for training.
- Berserk Button: Holly. Suezo will try to take on anyone he sees as a problem for her.
- Butt-Monkey / The Chew Toy: Generally on the end of some mistreatment. Not one episode goes by in which Suezo isn't harmed in some way in a humorous manner (typically after being thrown into the air and somehow forgotten).
- Can't Catch Up: Suezo struggled with this; even Mocchi was able to quickly surpass him. This was mainly due to Suezo having serious difficulty with the mental powers his species tends to be better known for. Even after his Day in the Limelight episode where he managed to learn Teleport, he still couldn't catch up and had his skills mostly Played for Laughs.
- Cowardly Lion: The most likely member to panic during fights, yet still usually willing to stand his ground. Especially as the show goes on.
- Doomed Hometown: We see how it was destroyed in episode 8.
- Establishing Character Moment: When he first meets Genki, he demonstrates his ego by being offended by Genki questioning him being real... Not long after that he goes out of his way to grab a stunned Genki when baddies charge in.
- Eyes Are Unbreakable: Given that he's basically a giant eyeball on a single leg, he'd be in real trouble if this wasn't in effect.
- Fastball Special: Notably, he was the one who came up with having Golem lob him into the air to give him a good look around. He quickly decided he wasn't too fond of that idea after being dropped/forgotten the first few times.
- Kiss of Death: A rarely-seen move; it was cut from the dub except for one instance when it missed.
- Jerk with a Heart of Gold: Vain and selfish, but unwaveringly loyal to his friends.
- Large Ham: He and his (sub-)species are easily the most expressive characters in the series. It helps that they have have the chops to literally chew the scenery with.
- Oculothorax: Just an eye on a tail.
- Spoiled Brat: Holly tended to coddle him when they were younger, and didn't focus too hard on making him learn how to fight.
- Tail Slap: His primary move.
- Teleporters and Transporters: In general, Suezos should have the ability to teleport as one of their attacks. Alas, Suezo himself could never concentrate hard enough to do it. He finally gets the teleport attack, but is not very good at it.
- Took a Level in Badass: It takes a while and he remains The Chew Toy, but Suezo eventually manages to become a truly impressive fighter. It culminates in him being able to take on a huge monster after taking a mean beating and later being able to copy Poritokas ultimate attack just by watching it.
A Gentle Giant who lives in a clearing in the forest and is known as the 'enigma'. While he is the largest and most physically imposing of the Searchers, he is also the most compassionate and prefers to avoid fighting. During most battles, he acts as the team's Stone Wall. Don't piss him off.
- Berserk Button: Hurting his friends, especially Genki or Holly.
- Beware the Nice Ones: When sufficiently angered he can destroy even tough monsters in one hit.
- Fastball Special: Mainly used as a way to help Suezo survey the area; also used the traditional version with Mocchi once.
- Gentle Giant: Loves birds and flowers and dreams of opening of his own restaurant.
- Golem: Of the stone variety.
- Heroic BSoD: In "Guardian of the Discs" after the Jells stomped on his Berserk Button and he slaughtered them in a blind rage.
- Honor Before Reason: "Undine's Lake", where he protects The Mole because he promised to before she backstabbed the group.
- Lethal Chef: Starts out as this, which is understandable since he initially cooks with his usual favorite foods: rocks and gravel. Subverted later on however as he learns how to cook with traditional ingredients and becomes a pretty darn good cook.
- Stone Wall: Usually serves as a barrier for the team to take cover behind.
- Verbal Tic: Third-Person Person who speaks slowly... and frequently pauses... during long sentences.
- Why Did It Have to Be Snakes?: Golem hates water. Justified since he's made of rocks and will sink like a stone in any large body of water. He also fears the potential erosion. Hilarity Ensues whenever the Searchers have to Get on the Boat.
Tiger of the Wind
A wolf bandit who steals from travelers in order to support his pack of wild and stray tiger hybrids. When that doesn't end well, he joins the Searchers in order to get revenge on Moo. Very proud and stubborn.
- Aloof Big Brother: Acted like this towards Gray Wolf to make him toughen up. It sort of backfired, given that Gray Wolf developed an inferiority complex instead that Moo magnified into full-blown Green-Eyed Monster. Also acts as one towards Genki.
- Big Brother Instinct: Despite the above, he'll still leap to protect Gray Wolf when he's in danger. Extends to Genki, Holly, and Mochhi after he befriends them.
- Break the Haughty: Tiger is humiliated by Captain Dino and Hare in two consecutive episodes. The first in Tiger's debut episode and the second in Hare's debut episode. He pays them both back for it.
- Happens again In the Post-Script Season, where Tiger is thoroughly convinced he is as strong as he always was even though he forgot how to use his moves. This results in him being beaten badly by Night Niton and embarrassing himself by being a Sore Loser. After watching Mocchi fight and hearing Genki defend him, Tiger finally gets off his high horse and is able to get revenge on Night Niton.
- Brought Down to Normal: Had to deal with the same problem Mocchi faced during the third season. He didn't take it well as the above trope demonstrates.
- Cain and Abel: The Abel to Gray Wolf's Cain.
- Can't Hold His Liquor: As demonstrated in a scene cut from the dub.
- Dark and Troubled Past: His brother Gray Wolf was captured by Moo and taken away, ultimately becoming one of Moo's Big Bad Four. Tiger is not aware of this last part until much later. He doesn't take it well.
- Defrosting Ice King: Takes a while to warm up to the Searchers, but when he does, it stays.
- Desert Bandits: Introduced leading a band of these.
- Deus Exit Machina: During "Tiger Meets His Match"; leads into a Really Dead Montage before his Faking the Dead plot is revealed via Big Damn Heroes.
- The Dreaded: In his introductory episode, as well as some episodes afterward. His reputation alone scares people.
- Every Scar Has a Story: His first encounter with Moo ended with him getting a nasty slice across his face and his brother's abduction.
- Glass Cannon: Very powerful, but can be taken out fairly quickly.
- Good Is Not Nice: He can be particularly ruthless and brutal in battle and he won't hesitate to kill if needed. Not to mention he's arrogant and overconfident at times.
- Hair-Trigger Temper: Especially around Hare.
- An Ice Person: His Blizzard attack.
- Ineffectual Loner: Tries to keep an emotional distance from everyone, and attempts to leave the group several times after learning what his brother's become. Also takes off alone during "Tiger Meets His Match", and is seemingly killed for it, though it thankfully gets Subverted.
- Irony: Tiger of the Wind was defeated by Hare farting, in a scene cut from the English dub.
- Jerk with a Heart of Gold: Standoffish and proud, but fiercely loyal to his friends.
- Loveable Rogue: Of the thief variety.
- Mr. Vice Guy: Pride is his biggest issue, along with his temper.
- Noble Wolf
- Not So Different: See Hare's entry below.
- Promotion to Parent: While his parents are never shown, he and his little brother have fended for themselves for their whole lives with Gray Wolf turning to his big brother for protection when he needed it.
- Scars Are Forever: Has a scar cutting across his face, which remained even after his Heroic Sacrifice and rebirth in a Mystery Disc.
- Shock and Awe: His lightning attacks.
- Taking the Bullet: Did it for Genki in the beginning of the 25th episode. This was also an example of a Deus Exit Machina to keep him out of the fight scenes for the other characters.
- Vitriolic Best Buds: Treats Hare with disdain and takes any opportunity to insult him, yet will leap to his defense as easily as he would the rest of the team.
The Trickster who pulls a fast one on Tiger, then tries to con the rest of the group. When that doesn't work out quite the way he expected, he apologizes and cheerfully joins the team, acting as The Smart Guy — though his arrogance and overconfidence works against him sometimes.
- Achilles in His Tent: "Underground Adventure".
- Backstory: In contrast to the other Searchers, his past wasn't explored until the middle of the third season, making it a source of Fanfic Fuel. For the record, it turned out he used to be part of a Two Guys and a Girl team of thieves who stole from Moo, but lost both of his partners when one of their targets was actually a trap.
- Bindle Stick: Carries this; sometimes it holds tools the group uses for adventuring. Its contents weren't revealed until his Backstory finally came out late in the third season.
- Fartillery: Scenes with his Gas attack were cut from the English dub.
- Gasshole: Hare is the main source of fart jokes, thanks to Gas: a move that's only used handful of times, but it tends to be quite effective in each appearance.
- Good Old Fisticuffs: His fighting style.
- Heroic BSoD: Goes through a couple of these, but the best instance would be during "Tiger Meets His Match": upon seeing what appears to be Tiger's Lost Disc, he goes into a Thousand-Yard Stare before snapping into Unstoppable Rage.
- Innocently Insensitive: Can be this at times. While trying to get Golem on Horn's ship, Suezo lets out Golem's fear of water. Hare laughs at this, at which Holly tells him to shut up.
- Killer Rabbit: Looks harmless, but can be a very competent fighter.
- Let's Get Dangerous!: Step 1: Make plan and assure friends it will work because you're a genius. Step 2: See plan fail. Step 3: Improvise.
- Love Triangle: Part of it. In the past, Wild Hare believed that he and Fairy Hare were a item and in jealousy, turned evil and plotted to tear them apart.
- Loveable Rogue: Of the Con Artist variety.
- Miser Advisor: Downplayed, Hare tends to be the one thinking about spending and raising money. Of note is "Underground Adventure", were Hare provides a cost-effectiveness analysis of going over a mountain. This leads to Tiger claiming that Hare is Only in It for the Money. Hare admits that was his original intent, but became genuinely concerned as he became part of the team.
- Mr. Vice Guy: Pride and Greed.
- Not So Different: Notice all the tropes he shares with Tiger?
- Playing with Fire: Via his Dragon Kick.
- Shipper on Deck: Of Fairy Hare and Wild Hare.
- The Smart Guy: As he will happily tell you himself, Hare is very intelligent and usually makes the team's plans.
- Too Clever by Half: Knows he's smart, but sometimes his plans don't work out like he expects.
- Vitriolic Best Buds: Loves to tease and trigger Tiger's temper, but just as quick to defend him.
The PhoenixA legendary bird monster who fought Moo long ago, the Phoenix can turn bad monsters to good and revive lost Mystery Discs. While now the stuff of legends, Holly believes it exists, and finding the Phoenix is the object of the Searchers' quest.
- All Myths Are True: The myth about it is perfectly accurate.
- Big Good: It serves as inspiration to the Searchers and is the only one capable of stopping Moo.
- Empty Shell: Its soul split into five monsters, leaving its body soulless.
- Living MacGuffin: It has no real personality other than being benevolent, but is very important to the plot.
- Playing with Fire: Uses fire in beam attacks.
- The Phoenix: Right there in the name!
- Sealed Good in a Can: Specifically, sealed in ice.
- Soul Jar: Its soul was split into five monsters.
- Super Soldier: It was created to end the Last War and defeat Moo.
- Tomato in the Mirror: The Phoenix's body was found, but its soul resides in five monsters—specifically Suezo, Mocchi, Golem, Tiger, and Hare.
Tropes shared by the Baddies in general
- Brainwashed and Crazy: It's stated in the first episode that Moo has built his army by turning monsters evil.
- Card-Carrying Villain: They openly refer to themselves as Baddies/Evil Monsters/Warumon.
- Monster of the Week: How their battles with the Searchers go; Sometimes it's a matter of the heroes wandering into a territory controlled by a particular monster, and sometimes it's a higher-ranked Baddie siccing an Elite Mook on them.
- Mooks: Some monster species, like the Evil Hares, act as foot soldiers for the more powerful Baddies.
- Villain Decay: In the third season, the Baddies end up this way due to Moo and Phoenix's battle at Mount Kairus. Those that weren't reformed prove to be less than willing to remain Baddies once things got tough.
An ancient evil whose origins are Shrouded in Myth, Moo has risen and begun terrorizing the land once more. He has the power to corrupt monsters, signified by wearing his crest.
- Authority Equals Asskicking: Described as an overlord, and does plenty of fighting. His minions are convinced he's invincible.
- Beyond Redemption: The Searchers are looking for the Phoenix so that he may turn all the evil monsters into good monsters. Some of the Searchers firmly believe even Big Bad Moo will be redeemed by the Phoenix and state this multiple times, while the others aren't convinced. Later on, when the Searchers first encounter Moo, they find out through a Curb-Stomp Battle that Moo is legitimately pure evil. After this, those who thought Moo could be redeemed now agree he's beyond any sort of redemption.
- Big Bad: Of the first two seasons.
- Breath Weapon: His main attack in his dragon form.
- Card-Carrying Villain: Revels in his hatred and villainy, and uses evil to become even stronger. He's ''not'' however played for laughs.
- The Corruption: Signified by his baddie emblem.
- The Corrupter: Moo has the ability to change good monsters into bad ones.
- Dark Lord on Life Support: After being weakened by the sun, Moo is in bad shape and is kept alive via life support while he waits for the Magic Stone as a cure.
- Darth Vader Clone: Armored figure in dark who is feared by everyone who knows him. To top it off, he's possessed Holly's father.
- Demonic Possession: The body he's possessing is Holly's father.
- The Dreaded: People in areas largely untouched by him are frightened by the mention of his name.
- Emotion Eater: Hatred makes him even more powerful.
- Evil Overlord: Controls much of the world at the start of the show.
- Evil Sounds Deep: Has a very deep voice, both in humanoid and dragon forms.
- Expy: For Godzilla. From being a 100 foot tall dragon, to being a metaphor for the nuclear bomb.
- Final Boss: In the Post-Script Season finale (his soul anyway), and the entire series overall.
- Fluffy the Terrible: Despite being the ultimate evil, his name is "Moo".
- Gone Horribly Right: He wanted to feed off the searcher's and rebellions negative feelings and emotions, but especially Holly's since he ruined her life. When he finally gets want he wants, bringing out how much she supremely hates him, it drives him nuts.
- Greater-Scope Villain: The Post-Script Season is more about preventing his return by keeping his Mystery Disc away from the Baddie remnants.
- Hopeless Boss Fight: At any time before the finale, especially his first appearance in battle.
- Implacable Man: Nothing can stop him except the Phoenix.
- Killed Off for Real: Is FINALLY killed for good at the end of the third season via his own soul being destroyed.
- Knight of Cerebus: Whenever he starts doing something, all comedic and lighthearted elements are dropped.
- Luke, I Am Your Father: The body he's possessing is Holly's father. He's eventually consumed completely.
- Lost in Translation: "Mu" means darkness or emptiness. This has nothing to do with cows.
- Manipulative Bastard: He's very good at manipulating the heroes' emotions to his own advantage.
- Nigh Invulnerable: He's immune to every kind of attack.
- No-Sell: Nothing hurts him except the Phoenix.
- Orcus on His Throne: Played with. Most dialogue implies he just sits in his castle all day while his minions conquer the world. He didn't know anything about the Searchers till one of his messengers told him, which prompts him to get off his throne so he can use the magic stone to find his original body, but after they escape, he doesn't bother with them even though they're searching for the one thing that can stop him. Justified in that case since he was at least doing something, finding and planning to rejoin his original body. Subverted when he does that, as he immediately goes to kill the Searchers.
- Our Dragons Are Different: His true form is basically a cross between Godzilla and a dragon.
- The Power of Hate: His power source.
- Pragmatic Villainy: Once he learns what he needs from Holly's Magic Stone, he immediately goes to look for it without telling the heroes where he's going.
- Red Eyes, Take Warning: Played straight, but averted when too much hatred makes him lose his mind, giving him yellow eyes.
- Sealed Evil in a Can: His original, dragon body.
- Super Soldier: He was created as one to decisively end the ancient war. It worked.
- Taking You with Me: His last words with the Phoenix. Realizing that the two of them are opposites fated to battle each other as long as they exist, he determines that the only way their battle will ever end is if both of them die, so he intentionally causes a Mutual Kill.
- Take Over the World: His initial goal but after he loses his mind, he turns into an Omnicidal Maniac.
- This Is Your Brain on Evil: He feeds on hatred. Too much hatred drives him insane.
- Turned Against Their Masters: Moo soon destroyed his creators, sending a message to the world that no one is his master.
- Unfortunate Names: See Lost in Translation. "Moo" isn't really the most intimidating name, is it?
- Weakened by the Light: At first, due to his body being imperfect. During the final episodes when he regains his strength, he flies out of the clouds and into the sunlight, unharmed.
- With Great Power Comes Great Insanity: Too much hatred drives him completely bonkers.
- Would Hurt a Child: Kidnaps six-year-old Eve, and torments Genki and Holly.
Moo's right-hand man and most trusted advisor. He is also the leader of the Weeds and personal emissary to the Big Bad Four.
- The Dragon: To Moo.
- Evil Counterpart: To Big Blue.
- Killed Off for Real: He is killed by Lilim near the end of Season 2. Also like Lilim, Captain Weed is one of the only baddies to never reappear again and it is hinted he was never revived and his mystery disk was gone forever, meaning he is now gone for good.
- The Leader: Of the Weeds.
- Rank Up
- Undying Loyalty: Towards Moo. Out of all the Baddies, Captain Weed cares about Moo's well-being and is loyal to him till the bitter end. Plus Captain Weed hates treachery as he attempts to kill General Durahan and Lilim for their betrayal of Moo.
- Villainous Breakdown
- Yes-Man: He obeys Moo's orders without question and agrees with anything he says.
One of Moo's Big Bad Four, his strongest generals. She has a serious grudge against humans, having seen them abuse and mistreat monsters for so long.
- Cleavage Window
- Cute Monster Girl: The most human of the Big Bad Four.
- Dark Action Girl: Though she becomes a normal Action Girl after her HeelFace Turn.
- Dark Magical Girl: Evil and magical, at least at first.
- Defrosting Ice Queen: Post defeat, she begins to warm up to the heroes.
- Depending on the Artist: Her feet either have thick talon like toes◊ or has long toenails◊.
- Does Not Like Shoes: Is always barefoot, most likely due to having long sharp toenails or talons.
- Emergency Transformation: Her fusion into Granity.
- Fairy Sexy: Though she looks more like a female demon than any kind of fairy.
- Freudian Excuse: In the past she and Big Blue were treated badly by the human as their slaves. When Moo offered her to join the rank she accepted in order to get revenge on humanity and turns them into the monsters' slaves.
- Good Wings, Evil Wings: She has evil demon wings, but it's later subverted when she turns good. As Granity she has grey angelic wings.
- HeelFace Turn: Through Defeat Means Friendship, though it takes a while to really kick in.
- High-HeelFace Turn: She is the only female among Moo's Big Bad Four and the only one to redeem herself pre-season 3.
- Humans Are the Real Monsters: Believes this since they imprisoned her and her kind.
- Made of Iron: While she appears to be a Squishy Wizard, especially in the first fight with her, Pixie is quite durable. In the season 2 finale she has her wings chopped off by Moo, is shocked repeatedly with the last time being continuous, is dropped to the snowy ground, and manages to hang on long enough for Big Blue to fuse with her.
- Pinky Swear: Genki does this to her during "My Name Is Pixie".
- Save the Villain: Her rematch with Genki and the Searchers ends with Genki attempting this when the ruins start coming down on their head.
- Shock and Awe/Playing with Fire: Her main attacks.
- Stripperiffic: Compared to Lilim and Poison, ironically she never uses it to her advantage unlike the other two.
- Squishy Wizard: In the dub, it took only one hit to bring her down after she'd been zapping everyone for a good portion of the fight.
- Magic Knight: Though we soon find out she's plenty good at fighting without her magic.
A Golem/Tiger hybrid and Pixie's personal bodyguard, a towering golem whose tiger sub-breed lends his stone skin an icy appearance. Stoic and stalwart, and completely loyal to his Master Pixie.
- An Ice Person: Appearance-wise anyway.
- Battle Butler: Serves Pixie loyally and aids her often in battle.
- Bodyguard Crush: Also loves Pixie.
- Golem: Of the icy variety.
- HeelFace Turn: Along with Pixie's.
- Heroic Sacrifice: When Pixie is fatally wounded, he voluntarily fuses with her to ensure her survival, even though it means sacrificing his own existence in the process.
- Mighty Glacier: Serves to brunt several of the Searchers' attacks.
- Palette Swap: Looks exactly like Golem, but with a Tiger's blue and white coloring.
- The Stoic: Often quiet and shows little emotion.
The second of Moo's Big Bad Four, a mysteriously floating mask and cape with seemingly nothing supporting them.
- Floating Mask: His face is this.
- HeelFace Turn: Like all monsters revived by the Phoenix, he was freed from Moo's influence and met the searchers again during a monster tournament. Despite some initial suspicions, both parties parted on good terms.
- If I Wanted You Dead...: With the No, Mr. Bond, I Expect You to Dine, when Genki questions if the food he offers them is poisoned, he says if he wanted to poison them he would have poisoned the water they drank outside, claiming that would easier than poisoning food, but the Searchers figure that if he did poison the water then they would have noticed by that point.
- Light Is Not Good: Has a noble color scheme and appearance, but is definitely evil.
- Load-Bearing Boss: Destroys the castle with his Gali Hurricane.
- Minor Injury Overreaction: When Genki manages to chip part of his mask in an attack, he goes ballistic and turns into a whirlwind that, while trying to get the Searchers, sucks in his own troops.
- No, Mr. Bond, I Expect You to Dine: He feeds the heroes food and water. The meal isn't rigged, but he uses the distraction to sucker-punch them.
- The Stoic: Often speaks in a completely flat tone. You can count the amount of times he shows any sort of emotion on one hand.
- Villainous Breakdown: During which he becomes Not So Stoic.
JokerOne of Gali's followers and a Master of Illusion who enjoys entrapping his victims with his magic before dealing the final blow.
- Master of Illusion: He creates these to lure the Searchers into a trap.
- Monster Clown: As in the games, he's a floating reaper-like figure with a clown mask for a face.
- Sinister Scythe: Wields this, and also attacks with the hilt of the weapon.
Tiger of the Wind's little brother, who was abducted by Moo and transformed into one of his Big Bad Four. A vicious hunter who exults in his own heartlessness.
- Aloof Big Brother: Deconstructed in that Tiger's treatment fed his insecurities and inferiority complex. Once Moo got his hands on that...
- Cain and Abel: The Cain to Tiger's Abel.
- Combat Pragmatist: In his fight with Tiger, he decided they'd use their claws to break the tie. Tiger agreed, but Gray Wolf then whipped his eyes with his tail, blinding him.
- Green-Eyed Monster: Insanely jealous of Tiger and his abilities, and, perhaps, his friends.
- HeelFace Turn: Like all monsters revived by the Phoenix, Gray Wolf was freed from Moo's influence upon being unlocked again.
- Icy Blue Eyes: Upon turning evil he gains icy blue sclera.
- Not Brainwashed: Or so he insists.
- Savage Wolves
- Schemer: During their confrontation, Tiger calls him on this and says he's been coming up with Zany Schemes ever since he was a pup. (Which may explain why Tiger has such a short temper with Hare...)
- This Is Your Brain on Evil: He gains icy blue sclera and an evil temper.
A beautiful water nymph who oversees a lake. Hides her crest of Moo underneath a mantle and approaches Golem, befriending him.
- Combat Tentacles: Uses these to attack Genki and company.
- Good Eyes, Evil Eyes: Once she's revealed as the mole, her eyes change shape.
- HeelFace Turn: Due to genuinely coming to care for Golem.
- Making a Splash: Uses water-based attacks.
- The Mole: For Grey Wolf.
- Our Mermaids Are Different: She has a Jell-like tail and tentacle arms.
- Redemption Equals Death: Notably, she believes this herself, choosing to leap into the fire Golem is trying to protect her from.
- Tentacle Rope: Snags Tiger with this; in the uncut version they use the tentacle to pull her out of the water.
The fourth of Moo's Big Bad Four, and the monster responsible for razing Holly and Suezo's Doomed Hometown.
- Bad Boss: Threw a Cabalos out the window of his cliff side castle.
- To be fair, that was one of Gray Wolf's former minions.
- Driven to Suicide: Upon seeing Genki, Holly, and the others trying to save him, he lets go of the ledge on purpose.
- Eye Beams: He uses these to attack Genki and Mocchi.
- HeelFace Turn: Like all monsters revived by the Phoenix, he was freed from Moo's influence after Moo's defeat. He even joins the heroes temporarily.
- She's a Man in Japan: At least the european spanish dub portrayed Naga as female.
- Slouch of Villainy: Is often seen lounging on his throne.
- Sssssnake Talk: Averted.
- Take My Hand: Holly attempts this with him.
A set of Animated Armor who maintains an army of his own monsters, frozen and kept on hand for whatever tasks he cares to set them upon. While he works for Moo, he secretly plans to overthrow him.
- Animated Armor: He's a floating set of armor with a cape.
- Authority Equals Asskicking: Despite not being one of the Big Bad Four, his power is on par with them.
- Big Bad: In Season 3.
- Big Bad Wannabe: He quickly takes to the idea of destroying Moo and taking control of the Baddies, only to fail miserably and get double-crossed by Lilim. In the third season, he hopes to use Moo's evil soul to gain power, only to learn that Evil Is Not a Toy.
- Card-Carrying Villain: His title is the Evil General Durahan.
- The Chessmaster: Plans to overthrow Moo along with Lilim.
- Dark Lord on Life Support: Reduced to a head kept alive with special equipment for almost all of season 3. After being saved from Moo's evil soul he regains his body.
- Evil Sounds Deep: He has one of the deeper voices in the show.
- Four-Star Badass: A general, and with the skills to back it up.
- HeelFace Turn: In the Season 3 finale.
- Knight of Cerebus: Durahan's arrival towards the end of the second season signals the end of lighthearted episodes, as he appears right after a Breather Episode. Even though he isn't around for very long, his presence signals a tonal shift, as he and his followers are very persistent and nearly succeed in killing the heroes, and through his actions Moo gets the magic stone, which allows him to overcome the only thing keeping him from killing the protagonists. Following this, the season heads towards a tear-jerking conclusion. He's also a literal knight.
- Large Ham: Has a tendency to refer to himself in the third person while shouting his lines.
- Orcus on His Throne: In the third season he never goes directly after the heroes. Justified considering all that is left of him is his head attached to a huge life support machine.
- Pet the Dog: Is sincerely grateful to his Weed servant for risking his own life to help him. He is also remarkably forgiving to Mum Mew and Gobi respite how much they blunder, though he often still loses his patience with them.
- Redemption Earns Life: At the very end of Season 3.
- The Starscream: To Moo.
- Taking You with Me: His last act in the second season is taking revenge on Lilim just before his ship explodes.
- Third-Person Person: SO SAYS THE EVIL GENERAL DURAHAN!
- Villain Decay: Downplayed. In the third season Durahan never reaches how intimidating a villain he was before, but he is still the most serious villain around and a clear threat.
Durahan's right hand woman, specifically a Pixie/Joker mix. More conniving and evil than Pixie, and she seems to have her own agenda...
- Attack Reflector: In the dub version, Lilim reflected Captain Weed's projectile back at him.
- Ax-Crazy: Is extremely sadistic and gleefully enjoys being evil. She was going to happily kill the baby after Jagged Hound accomplished his side of the bargain. Anytime she does something really evil, she happily blows the victim a kiss, really highlighting how much she's enjoying hurting them.
- The Chessmaster: Has her own schemes, and is working against whoever she feels like.
- Chronic Backstabbing Disorder: She readily backstabs Moo for Durahan, but once she sees how powerful Moo is, she quickly changes her mind.
- The Dragon: To Durahan.
- Fairy Sexy: Though like Pixie, she looks more like a female demon. Even more of one than Pixie does, in fact.
- Faux Affably Evil: She's much more evil than Pixie, and later even Duarahan is horrified by her evil deeds.
- Femme Fatalons: She sliced Captain Weed's fingers with them in the Japanese version.
- Has a Type: According to her, she has a thing for strong men. She is constantly complimenting Durahan's minions and even goes as far as saying Metal Jell turns her on because his body is so hot.
- I Fight for the Strongest Side: Which makes her Durahan's own personal Starscream.
- Killed Off for Real: Near the end of Season 2. Even in Season 3, she never reappeared, though Poison mentioned her treachery a few times.
- Power Is Sexy: She thinks power is sexy and that's why she betrays Durahan because nobody is more powerful(and thus sexier) than Moo.
- Psychotic Smirk: When plotting something evil.
- Rewarded as a Traitor Deserves: She dies at the hands of Durahan, the very monster she betrayed and left for dead.
- Sadist: She is so overjoyed by the fact that she almost killed Genki that she excitedly blows him a kiss and winks at him after Holly barely saved him. She also looked like she was having a blast betraying Durahan and just like Genki, excitedly blows him a kiss after screwing him over.
- Smug Snake: She's clever, but her plans have a tendency to be Out-Gambitted.
- "Take That!" Kiss: Her favorite trope, she does it 3 times over the course of 2 episodes. In episode 44 she steals the stone and gives it a kiss while mockingly thanking Holly. Also in the same episode after she drops Genki to his death she gleefully blows him a goodbye kiss. In the next episode after ambushing Durahan, killing all of his men and ruining his life she mockingly blows him a kiss and says "see ya later".
- The Starscream: To Moo, and later Durahan.
- The Vamp: She shows off her body quite a bit.
- Women Prefer Strong Men: This is her reasoning as to why she betrays Durahan.
A vain Mew/Pixie type who appears in Season 3 under Durahan. She often buys exercise gadgets to look her best and one-up Poison.
- Berserk Button: Don't ever say that Poison is more beautiful than her, and don't call her an old hag.
- Curb-Stomp Battle: To anyone who pushes her Berserk Button, this will be the result.
- Cute Kitten: She looks like one, though she sounds and acts older.
- Dark Action Girl: More subtle than most, but still, she's much tougher than she looks.
- The Dragon: To Durahan in Season 3.
- Eye Beams: One of her most dangerous abilities.
- Fiery Red Head
- Larynx Dissonance: Her voice sounds deeper than you'd expect for a plush toy.
- Ma'am Shock: Never call her Oba-san.
- Nightmare Face: Made even more disturbing considering she's a small, cute little anthropomorphic cat.
- Not-So-Harmless Villain: Don't make her angry.
- Older Than They Look
- Perky Female Minion
- Punny Name: Both version of her names are pun on the word mama and the sound cats make.
- Redemption Earns Life: Like Durahan near the very end of Season 3.
- Ridiculously Cute Critter: Mum Mew is one of the most adorable Baddies.
- Team Mom: A rare villainous example.
A perky, special-breed Pixie serving under Durahan in Season 3. She has a rivalry with Mum Mew for Durahan's affections.
- Bowdlerise: Her appearance in the video game Monster Rancher 2 has her attire dominatrix-themed, all of them are removed in the anime version.
- Dark Chick
- Fairy Sexy: Though she looks even more demonic than Pixie and Lilim.
- Opera Gloves
- Genki Girl: When compared to the more serious Pixie and Lilim. She gets angry a lot more easily than either.
- Perky Female Minion: In stark contrast to the more serious Pixie and Lilim.
- Redemption Earns Life: Like all of Durahan's followers at the very end of Season 3.
- Shock and Awe: Like Pixie, she can conjure lightning.
- Slapstick Knows No Gender: Often on the receiving end of comic violence.
- Vain Sorceress: Proud of her looks and her magic.
- You Gotta Have Blue Hair: She has blue hair.
- Zettai Ryouiki
A Golem/Henger hybrid serving under Durahan in Season 3. Frequently the subject of mistreatment.
- The Brute: Quite strong.
- Butt-Monkey: He's picked on a lot by other Monsters.
- Dumb Muscle: Strong, but not very smart.
- Minion with an F in Evil: Despite being a colossal robot, he is perhaps the least threatening baddie in the entire series.
- Redemption Earns Life: He along with the rest of Durahan's followers at the very end of Season 3.
A special-breed Durahan brought to life by Moo's evil soul after fusing with Durahan and his minions. He is also Moo's final form.
- Animated Armor: Obviously.
- Cool Sword: He wields Durahan's Typhoon Blade, a massive sword that summons electricity.
- Cyclops: He has one single red eye in the center of his helmet.
- Disc-One Final Boss: The last Baddie in the Post-Script Season finale, but he is merely an obstacle the Searchers battle before Moo's evil soul absorbs them.
- Knight of Cerebus: As soon as he appears, the Lighter and Softer tone of season 3 completely vanishes. Fittingly, he was created by a fusion of two previous Knights of Cerebus.
- Last Episode, New Character: He is a new character that appears in the last episode of the entire series.
- Red Is Violent: His armor is colored red and he's evil.
- What Happened to the Mouse?: Immediately after the Searchers and Durahan and his minions have defeated Moo's soul, Ruby Knight is nowhere to be seen. It can be assumed he was destroyed along with the soul.
The unnamed father of Holly. Several years before the series began, he was exiled from his village leaving Holly behind.
- Disappeared Dad
- The Exile
- It's Not You, It's My Enemies: Forced on him by the previous village elder. The old leader was worried that his incredible mastery of the Magic Stone's power would attract evil beings to the village.
- Laser-Guided Amnesia: When he's finally released from Moo's Mystery Disc, he initially has no memory. After watching the Ruby Heart created when Moo's evil soul absorbed Durahan and company in action, he remembers everything.
- Unwitting Instigator of Doom: While searching for the Phoenix he finds a Disc containing Moo's evil soul, becomes possessed, and triggers all of the bad things in the series.
A trainer who cruelly abuses his giant Worm by repeatedly whipping and terrifying it. This bites him hard during "Eternal Worm".
- The Atoner: The death of his Worm in episode 4 turned him against Moo.
- Evil Is Not a Toy: He wanted to join Moo, but the Seed Sisters take advantage of his eagerness and backstab him the first chance they get.
- HeelFace Turn: At the end of his episode he swears to raise his new worm right and fight Moo. He makes good on this promise by fighting the baddie armies and later helping Genki train.
- I Fight for the Strongest Side: Originally joins Moo's forces, until they backstab him.
- My God, What Have I Done?: Eventually realizes how horrible he has been to his monster.
- Spell My Name with an "S": Alternately spelled as Allan or Alan.
- Tsurime Eyes: With small pupils.
- Whip It Good: Uses a whip to attack and berate his Worm.
- You Gotta Have Blue Hair: Has silver hair.
A mysterious monster that appears to be a simple black slab. Remembers the history of the world, and relates this to the Searchers after they unlock him. Has a tendency to randomly fall asleep.
- Apocalyptic Log: A living one.
- The Faceless: While Monols can make faces in-game, this one does not.
- Mr. Exposition: He often tells the Searchers past events, providing the backstory of Muu and the Phoenix. Justified that all the events happened so long ago that to Holly and everyone else that it is myth and legend.
- The Monolith: To further the Shout-Out to the movie 2001, Monol's debut episode has the searchers find his disk in the desert. Later, all the characters are facing the slab outside similar to the "apes discovering the Monolith" scene.
- Sleepy Head: Has a habit of falling asleep when not talking.
A powerful red Dragon with a deep grudge against Moo.
- Instant Awesome: Just Add Dragons!
- Pirates: He and his crew are pirate dragons.
- Nice Guy: The only reason he is hesitant to help at first is because he is concerned for the well-being of his comrades, and once he starts helping he becomes one of the most steadfast and helpful allies the Searchers make.
A Suezo/Tiger hybrid who brazenly defies Moo by continuing to sail with his crew of Rockies (all Suezo/Golem types).
- Abhorrent Admirer: To Holly.
- Arch-Nemesis: Guji, the Zilla/Tiger hybrid who works for Moo.
- Sitcom Arch-Nemesis: Horn and Suezo butt heads many times.
- Frothy Mugs of Water: In the English dub, raided a town for its supply of milkshakes.
- Jerk with a Heart of Gold: As arrogant and dishonest as you would expect a pirate captain to be, but is firmly an enemy of Moo and a loyal friend once you earn his esteem.
- No Fair Cheating: During the Old Maid game he played with Suezo in order for The Searchers to gain passage on his ship. He notices the cards reflections off Suezo's eye and gains the advantage up till the last hand. Suezo finds out at the last minute and forces him to pick the last cards with them face down. He chooses the old maid then had Suezo do the guessing game himself. Suezo's about to pick the correct card but Horn licks the ink off it to prevent him from winning. Hare however, knowing a thing about cheating, sees through it easily and shows the Searchers, forcing Horn to concede.
- Pirates: Though they don't do much pirating.
- Pirates Who Don't Do Anything: So much so that when his ship gets stolen and actually gets used as a pirate ship, Horn is disgusted and horrified.
An Adventurer Archaeologist: She explores the various ruins of the world along with her pet toucan, Joy.
- Adaptation Personality Change: Since Colt's game personality is nearly identical to Holly's, the anime made her a snarky, short-tempered explorer.
- Adventurer Archaeologist: Explores ancient ruins.
- Continuity Cameo: Colt acts as the player's assistant in MR2, along with Joy, who handles most direct interaction with your monster.
- My God, What Have I Done?: Feels very guilty about showing the monsters a factory which used to create monsters.
- Plucky Girl: A bit more tomboyish than Holly.
- Polly Wants a Microphone: Joy sometimes commentates on what's going on.
BakuA Big Friendly Dog who lost his owner to Moo's forces. The subject of a tear-jerking episode.
- Big Friendly Dog: Loves his owner, and Genki, who looks like him.
- Doomed Hometown: Lost it and his owners to Chariot.
- Heroic Sacrifice: Does this to save Genki from Chariot.
- Undying Loyalty: Towards Genki and his village.
A Hare/Pixie hybrid and one of Hare's long lost friends who was separated from him during their raid against the Baddies. After survived, she came across a group of orphaned children and helped raise them at the church since then.
- Action Girl: She's sweet but never underestimate her skills.
- Action Mom: She is an adoptive mother of the children and monsters.
- Freudian Trio: The Super Ego
- New Old Flame: Subverted. Despite Genki's teasing, she and Hare are only close friends. Wild Hare, however, believes in this.
Wild HareA Hare/Worm hybrid and another of Hare's long lost friends. They reunite after the Searchers rescued him from a battle with some baddies which was actually staged as he's one of the baddies.
- Freudian Trio: The Id.
- Green-Eyed Monster: He always believes that Hare and Fairy Hare are in love with each other and out of jealousy, betrayed them and joined with the Baddies.
- HeelFace Revolving Door: Was a friend of Hare and Fairy Hare, until he thought they were in love. Envy drove him into becoming a baddie and betraying them. When he returns years later he pretends to be an ally in order to lure them to a trap, but then turns good again thanks to the words and actions of his old friends.
The second-strongest Monster in the Season 3 Tournament Arc, Poritoka is a White Suezo who is perhaps the biggest jerk in the series—selfish, arrogant, callous, and a bully. He has an incredibly strong spinning move.
- Foil: To Suezo. He's just about everything that Suezo isn't, mean, completely self-centered, and able to use his own teleportation abilities and attacks to their fullest with devastating effect, unlike the main Suezo.
- Hate Sink: There is nothing to like about this monster. He makes Allan seem nice by comparison. See Jerkass below.
- Jerkass: Poritoka may be the biggest one in the series who isn't a Baddie. He treats everybody like dirt and has no redeeming qualities, and delivers a brutal beatdown to Mocchi during their fight.
- Smug Super: Say what you want about his personality, but there is a reason he's so smug—he's just that good.
- World's Strongest Man: At least in comparison to rest of his species. Unlike the other Suezos shown in the series, Poritoka is incredibly strong, fast, and deadly, most likely making him the strongest Suezo in the series.
The strongest Monster in the Season 3 Tournament Arc. Most is a White Mocchi and is hailed as a warrior/superhero. He acts on his own mysterious reasons, and tends to have a calm, stoic demeanor.
- Badass Long Robe: His standard attire when not fighting in an official battle in the ring.
- Big Brother Mentor: Towards Mocchi.
- The Cape: Also looks the part in his standard attire.
- Deus Exit Machina: Most is completely aware of the problem the Searchers faced during season 3, and even directly intervene with it, albeit unintentionally at first. After providing the Searchers with basically everything they need to close out the conflict, he stays in the sideline with no explanation whatsoever. Its mentioned he is recovering from his injury, but had that was the case, Mocchi is in an even worse form than he is, and he just curbstomped Durahan's minions by himself. Regardless Most pressence in the final battle would completely eliminate any tension from the climax of the story, so he had to go.
- The Dreaded: Most of Durahan's minions are understandably afraid to face him on account of his power and skill.
- Final Boss: The champion of Legend Cup, and the last challenge for Mocchi to overcome by himself.
- Nice Guy: In complete contrast to Poritoka, Most is probably one of the most benevolent characters in the series. Whenever he's not training for the tournament, he's doing good deeds. When he learns why the Searchers need the Winners Plate, he just gives it to them after beating Mocchi. In fact he would have done so sooner, but didn't have the Plate with him at the time.
- One-Man Army
- The Paragon: For Mocchi. Its interesting to note that the Searchers was this for him, as its the sacrifice of the Searchers that inspires him to be the monster he is today.
- The Stoic: Most rarely shows emotions.
- Signature Move: Mossama, which he taught to Mocchi.
- Story-Breaker Power: Most is one of the strongest Monsters in the world, strong enough that while he is recovering from his injury, he curbstomps Durahan's minions by himself without breaking a sweat. Even after the later Took a Level in Badass, his fight against Mocchi is a Curb-Stomp Battle despite the guts power boost from Genki. Most is so strong, that he was able to fight against Mocchi with the guts from all of the searchers and still win. Its because of this, that after the conclusion of Legend Cup, he is written out of the story.
- Where was this guy when Moo was rampaging? According to him, Moo just didn't interest him.
- World's Strongest Man: He's one of the strongest Monsters in the world, and his game counterpart is also one of the strongest monsters.