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This page is for the extraspecies characters that appear in Monster Musume.

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Voiced by: Teruyuki Tanzawa (leader)

A group of orcs who entered Japan illegally, taking a comic shop hostage to make ridiculous demands. They are handily defeated by MON, making their first introduction in the series.

  • All Men Are Perverts: All of the orcs in PORK are men, and their demands are the printing of orc-centric pornography. Later on another orc not a part of the initial group is shown arguing with a human over the superiority of orc-centric pornography over tentacle monster-centric pornography. PORK's leader reveals himself to be a pedophile when he molests Draco and threatens to rape Doppel-as-Lillith.
  • Attempted Rape: The orcs intended to rape one of their hostages in front of the police. Sadly for them, the "hostage" turned out to be Doppel. In chapter 40 the leader makes a return and assaults Draco, but is stopped again by Doppel using what is implied to be her true form.
  • Fun with Acronyms: In the official English release, they call themselves the "Pioneer Orc Renaissance Kinsmen" or PORK for short.
  • Go Mad from the Revelation: The Orc Leader fails his sanity check after being confronted by Doppel and is left all-but comatose by the sight of her monstrous transformation.
  • Knight of Cerebus: The threat is resolved within a chapter, though they are gun-toting terrorists responsible for an Out-of-Genre Experience.
  • Loophole Abuse: Using the cultural exchange laws, the orcs can perform their terrorist actions without fear of being attacked by the human police force. Eventually defied by Ms. Smith - when the orc leader tells her to accompany him in the deportation that would be his maximum legal punishment, she has Doppel provide her an alibi while she takes out her frustration on him.
  • Madness Mantra: When the orc leader sees Doppel's transformation, all he says afterwards is "little girls scary".
  • The Nose Knows: Orcs have an incredible sense of smell, they can smell anything within a kilometer radius.
  • Not-So-Harmless Villain: The orcs are idiots, yes, however their leader does mercilessly gun down a special forces agent who tried to sneak in, and attempted to rape a hostage in front of the police force.
  • Oh, Crap!: The orc leader, when Ms. Smith gets ready to really punish him. He has another moment when Doppel transforms into an eldritch horror, destroying his sanity.
  • Our Orcs Are Different: They straddle the line between Tolkien and Blizzard orcs. They have human-level intelligence and a high level of cunning, capable of using firearms. Though they violently take hostages and are mostly concerned with their own lusts.. They are also piglike in appearance like old school D & D orcs.
  • Pædo Hunt: The leader of the orc pack openly admits to preferring young girls when assaulting Draco, and is such a pervert that he abandons Draco to chase after the child-sized Lilith and makes it clear he intends to rape her. Lilith turns out to be Doppel in disguise, and she proceeds to Scare 'Em Straight.

Voiced by: Shiina Natsukawa (Japanese), Christina Kelly (English)

A kobold who runs a fitness center for extraspecies, and the first non-government monster girl to NOT be added to the harem.

  • Beast Man: Though she initially appears to just be a Little Bit Beastly, her character profile reveals that she's actually completely covered in fur, head to toe. It just grows thicker on her head, wrists and ankles.
  • Bizarre Alien Biology: She has four more pairs of nipples on her abdomen, beneath her fur, much like an actual dog. Her profile notes that some kobold subspecies even develop a second pair of full breasts.
  • Cool and Unusual Punishment: It's revealed that one of her side jobs is disciplining extraspecies who break the rules (like running off without their host family). Her choice of punishment is to force them to walk an entire marathon!note 
  • Demoted to Extra: The anime adaptation skips her introductory chapter entirely and cuts out her contribution to Kurusu's food worries, instead giving her brief, unvoiced cameos during episodes 10 and 11. It got a little better with the OVA, which was an extended adaptation of the cut introductory chapter.
  • Genki Girl: Polt seems to have near-infinite reserves of energy.
  • Happily Married: Chapter 64 reveals that she'd gotten married to a man who looks suspiciously like "Poltfan", a real-life fan translator who had been unofficially translating the manga to English.
  • Hidden Depths: Despite being a happy-go-lucky genki girl, Chapter 41 reveals she has some insecurities about what people think of her, and worries she is The Friend Nobody Likes.
  • Innocent Fanservice Girl: She's been leaning in this direction lately. In Chapter 43 she gets ogled when she leans down, exposing a healthy amount of her cleavage, and in Chapter 48 her demonstration of the kobold centaur riding machine ends with her whole body sweating.
  • Large Ham: She likes to shout. A lot.
  • Living Lie Detector: A side effect of her potent sense of smell, she can pick up pheromones when someone is stressed or exhausted. And as Draco and Lilith found out, she can tell when they're just acting tired to try to get out of walking a marathon.
  • Male Gaze: One panel in Chapter 17 seems veeeery focused on her tail, and the hole her swimsuit has for it. And Mero's inability to stretch.
  • No Indoor Voice: It's rare to hear her not yelling at the top of her lungs.
  • Non-Idle Rich: She (and kobolds in general) are financially well off due to her species' association with mining cobalt. She owns and manages both the Sports Club Kobold and Kobold Stadium, as well as a number of spas, massage parlors, and relaxation centers.
  • Our Kobolds Are Different: She's a kobold of the dog-like variety often seen in Japanese media.
  • Perpetual Smiler: The only time she isn't smiling is when she's surprised.
  • Real Life Writes the Plot: As of chapter 64, she is married to Polt Fan. Who is based on the real-life english translator for the manga.
  • Reasonable Authority Figure: She is genuinely concerned with how the fitness center will be received and when issues are brought up, such as Mero not handling the chlorinated water in the pool well or the temperature being too cold for Miia, she says she will make sure they will be fixed when the place opens to the public.
  • Skinship Grope: Does this to Kii in an effort to "extract water from plants" after Kii drank all the water that Polt had prepared for herself, Draco, and Lilith.
  • Spell My Name with an "S": Volume 4 of the English release originally had her name as "Port".
  • Token Wholesome: She's up there with Lala and Manako on this. Outside of the Male Gaze entry described above (and an image of her naked and covering her breasts in an omake), she's one of the very few female characters that hasn't had any fanservice moments.
    • When Kii tries bondage on her in chapter 41 it is less graphic than with other girls and Polt mistakes it for a new type of sports training. Even when shown naked in the same chapter, it's from a distance where nothing is seen and is mostly a background detail.
    • Her wholesomeness is tested even further in chapter 43 where her customers ogle her breasts when she leans over for a warm up (she wears no bra), but of course Polt does this with no sexual intentions.
    • Chapter 48 gets even closer to throwing any sense of wholesomeness when Polt demonstrates how the Kobold's new centaur riding machine works.
    • Said image from the omake with her naked is reused in the first OAD as an eyecatch, but this time her nipples are in full view, since the OAD doesn't need to be censored for broadcast.

Voiced by: Airi Ootsu (Japanese), Rachel Landon (English)

A dragonewt with a creepy crush on Miia.

  • A-Cup Angst: Her profile reveals that most dragonewts have large breasts, something Draco is clearly lacking. She's shown with an embarrassed look on her face as she tries to claim that she's not small, everyone else is too big.
  • Adaptational Badass: Kind of. Unlike in the Manga, she does have the ability to fly in the anime...for all the good it does her: Mon shoots her escape attempt down with ease judging by the holes in her wings, and one blast of Suu's poisoned spray ends their fight before it even starts.
  • Awesome, but Impractical: As stated below, Draco's got a bad case of this. She's got scales that can block bullets! But her clothing usually catches on them, and she doesn't run into gun-wielding maniacs too often. She's got an extremely muscular tail! But she can't sleep on her back and she needs specialized clothing. She's got wings! But they're not strong enough for her to do more than glide, she has to deal with a lot of air resistance when trying to run and again, they get in the way.
  • Bifauxnen: To the point that everyone thinks Draco is a man at first. Downplayed after the truth comes out: her appearance in Chapter 25 is far more clearly feminine.
  • Butch Lesbian: She's quite obsessed with Miia and she's so masculine that everyone mistook her for a man. In chapter 40, she also tries to hit on the lizardwoman Liz, only to be promptly shut down.
  • Butt-Monkey:
    • Her profile following Chapter 25 is pretty blunt about it. Her wings and chest muscles aren't actually strong enough to let her fly, her armored scales are actually rather useless in everyday life and interfere with her ability to put on clothes, and her tail detaches if pulled. (Apparently that's somewhat shameful and associated with "lower" reptiles.)
    • Chapter 40 shows that she's approaching Meg Griffin levels: in this chapter alone she is about to get molested by an orc, is reprimanded by Liz (of all people), and almost gets to make peace with Miia until, because of a misunderstanding, is again rejected and chased away. Makes one almost feel sorry for her.
    • And again in Chapter 48, when at the Liminal Convention she tries to lure Miia into a special heated room display exclusively for reptilian species. She is of course rejected. Then she learns that her entrance to the room was conditional on her posing for a crowd in a swimsuit to show off the room's heating because she didn't Read the Fine Print, and has moments to change into a swimsuit before the electric frosted glass clears. Only it turns out the staff mistook her gender and only provided her a pair of swim trunks to change into. Which she doesn't even manage to get on in time. Cue the glass clearing after she'd stripped...
  • Curb-Stomp Battle: Ends up on the receiving end by Suu when she tried to exact revenge on Kimihito for having foiled her attempt at having Miia for herself. Suu ended the battle before it even started.
  • Does Not Like Men: She outright states she hates men. In spite of this, however, she's initially seen pretending to be one, acting like the douchiest stereotype of them imaginable, and expecting girls to like her for it.
  • Double Standard: Rape, Female on Female: After she's revealed to be a girl, her assault on Miia is more or less forgotten and she's treated mostly as comic relief from then on.
  • Draconic Humanoid: Draco has dragon wings and a tail.
  • Fantastic Arousal: As Suu discovers, the tip of her tail is sensitive just like Miia's.
  • Fantastic Racism: Initially appears to have a case of this, though it's eventually revealed she doesn't like men rather than humans in general. In fact, in one omake she's shown requesting to have a cute girl as her host, suggesting she has no problems with humans, provided they're female. She also seems to think reptilian liminals are superior to everyone else.
  • Foreshadowing:
    • Well before The Reveal, Draco orders Miia to stop talking about men, not humans, foreshadowing her Psycho Lesbian status.
    • There's also one on the chapter's cover page which reveals Draco's species' name and family's coat of arms.
  • I Just Want to Have Friends: Although she has a pretty strange way of showing it. She seems to be getting better however, as she's trying to just normally visit Miia at the house by Chapter 34. Unfortunately, no one was home at the time. She seems to horn in on any reptilian extraspecies in general: she starts hitting on Liz as soon as she learns that she's a lizardman.
  • Knight of Cerebus: Remember how Rachnera could have been the manga's first villain? Well, she missed out on that, and Draco got the title instead. She was very close to forcing herself on Miia, and would have had her way if not for Kimihito and Mero being Big Damn Heroes.
  • Laser-Guided Karma: Stalks Miia all the way to the Lamia village (brief cameo at the end of Chapter 62), formally announces her arrival in Chapter 63, and is stripped and sexually assaulted within two pages.
  • No Social Skills: When Draco actually tries to be civil, it's apparent that her social skills are very lacking. She has a hard time apologizing not because she doesn't want to, but because she doesn't know how to apologize.
  • Our Dragons Are Different: This dragon is a Winged Humanoid with draconic wings and a tail.
  • Psycho Lesbian: She tries to force herself onto Miia. A bonus omake with her and the other side girls indicates she actually doesn't like being called a lesbian, though the official English Translation clarifies that she was actually indignant about Lilith's foul mouth, and suggestion she suck on Kii's breasts in public.
  • Red Herring: While the initial assumption was probably the same as Miia's, Draco is NOT the one who sent Kimihito the death threat. She doesn't know anything about it and even if she did she is only interested in Miia.
  • Slasher Smile: She's probably sporting the scariest one thus far in the series. And that's including Rachnera's Nightmare Face.
  • Smug Snake: Draco certainly believes in draconic superiority. Though it turns out that being a dragonewt is nowhere near as great as it sounds. See Awesome, but Impractical and Butt-Monkey above.
  • Spell My Name with an "S": The official English release initially used Drago, before switching in the next volume.
  • Stalker with a Crush: Draco is introduced stalking Miia from the shadows.
  • Take That!: Draco is less than pleased when Miia can't stop being infatuated over Darling despite the fact that Miia felt left out at the aquarium.
    Draco: What's so great about that human anyway...? He's acting like the idiot main character in some harem-style light novel!
  • Tomboyish Name: "Draco" is typically masculine. Then again, so is this Draco.
  • Villain Decay: In her first appearance she almost has her way with Miia and would have succeded if not for Kimihito and Mero. In her next appearance she appears out of nowhere and attempts to attack Kimihito...and is promptly molested by Suu and dealt with. And then in a bonus omake she's being forced to walk an entire marathon (42 kilometers!) by Polt as punishment for going out without her host family. When she's shown up after that, she hasn't even been trying to do anything villainous.
  • Why Did It Have to Be Snakes?: She's creeped out by fish, of all things, as seen in Chapter 25.
  • Winged Humanoid: Draco's wings are the bat-like ones usually seen on dragons.
  • Wings Do Nothing: Her wings are only capable of gliding at best, and their shape and size cause wind resistance that slows down her running. The anime shows she can lift off the ground and glide, but she still can't actually fly.
  • Your Size May Vary: Her wings can vary in size sometimes, most notably in her debut where they look like they're big enough to enable flight.
    • Her tail too, seems to be as long as needed. In Chapter 19, it's long enough to wrap around to her front, with enough left over to bind Miia's wrists. It has also been depicted as being just barely long enough to brush the ground in Chapter 40.

Voiced by: Asami Seto (Japanese), Tiffany Terrell (Englsh)

A dryad whom Papi befriended before she met Kimihito. However, illegally dumped chemicals have transformed her into a rampaging monster, who Papi (and by extension, Kimihito) have to stop.

  • Adaptational Modesty: The anime adaptation gives her bark covering for her crotch.
  • Attack of the 50-Foot Whatever: Turns into a giant, mobile tree and attacks the first people she encounters.
  • Bondage Is Bad: Ties Papi up tortoise-shell style with vines and tightens them until she orgasms.
  • Combat Tentacles: Uses vines to grab onto people and wrap them up BSDM style.
  • Cool Chair: She has a throne made of roots that can move by itself.
  • Forgotten Friend, New Foe: Comes across as such at first due to having been driven crazy by the chemicals she was exposed to, and Papi having completely forgotten about her.
  • Freudian Excuse: Her hatred of humans stems from her kidnapping by extraspecies traffickers and being left behind by Ms. Smith when the traffickers were apprehended.
  • Godiva Hair: Her vine-like hair covers her nipples in some scenes, but not all of them.
  • Humans Are the Real Monsters: Dislikes humans in general, though she admits that Kimihito has good technique.
  • Idiot Hair: A big, leafy one.
  • Immodest Orgasm: When Papi and Kimihito suck the fertilizer out through her breasts, she has one.
  • One-Winged Angel: After absorbing experimental fertilizer for several months, she transforms into a massive plant monster.
  • Perpetual Frowner: Sne always has a bored and/or annoyed look on her face.
  • Plant Hair: Her hair is made of leaves.
  • Plant Person: She's a dryad, who looks mostly human with plant features such as leaves and vines for hair and bark covering her arms and legs.
  • Plot-Relevant Age-Up: Originally looks like a child, but after absorbing experimental fertilizer, she gains a body of a busty adult (which happens to be inside a giant tree monster body). She gains this form naturally when she's met again in Chapter 25, and supplementary materials have since revealed that her apparent age is heavily tied to her nutritional intake: she looks older when she's healthier and younger when she's starving.
  • Psycho Serum: Absorbed experimental fertilizer, which had a number of effects on her.
  • Punny Name: Ki is the Japanese word for tree/wood. Granted, it's probably not her real name, since Papi made it up for her.
  • Sexier Alter Ego: Like Suu, Kii can assume a more... adult-looking form when well-fed.
  • Shout-Out: Her One-Winged Angel appears to be one to the forest god from Hellboy II: The Golden Army.
  • Superhuman Trafficking: Was the victim of this, which is the reason she dislikes humans.
  • Stripperiffic: Doesn't wear any clothes, aside from some bark-like covering on her neck and chest... which leaves her breasts exposed.
  • Yandere: Comes across as such for Papi, though it's not her fault.

Voiced by: Atsumi Tanezaki (Japanese), Hilary Haag (English)

A mischievous devil who decides to cause some trouble to Kimihito and Centorea's date for her own amusement.

  • Ambiguously Brown: In the anime.
  • Attempted Rape: When her hypnotism fails to cause Kimihito to assasult her, Lilith tries to force herself on him. Fortunately, she is stopped by Doppel.
  • Black Eyes of Crazy: Like Doppel she has black sclera, but she seems more mischievous than malicious or insane.
  • Blackmail: Her scheme in Chapter 40 is to hypnotize Kimihito to trick Rachnera into thinking that "Honey" got infatuated with her, thus making her leave Kimihito's house and try to get together with her when she goes all alone in the world. Kimihito and Doppel quickly put a stop to that.
  • Breaking Speech: Tries this on Rachnera by pointing out how she is insecure and fearful about humans accepting her and hides in the shadows to avoid being seen. See below for the response.
  • Bullying a Dragon: She spent most of the chapter she first appeared in being a Troll to Centorea and Manako by playing on their insecurities. She then tries the same with Rachnera... and that's the last we see of here before Rachnera reduces her to a sub.
  • Casual Kink: Really enjoys bondage and refers to Rachnera as "Mistress".
  • Does Not Like Men: She believes that all men are lolicons.
  • Evil Laugh: Written in English as "Ki hi hi!"
  • Fille Fatale: In Chapter 40 she tries to seduce Kimihito in order to get dirty pictures to show to Rachnee, enabling her to get her "Mistress" all to herself.
  • Horned Humanoid: Comes with being a demon.
  • Hypnotic Eyes: Causes Centorea to develop these.
  • In the Hood: Wears a hoodie to hide her horns. The bagginess of the hoodie also helps to hide her tail and wings, with a pair of zippers in the back to let the wings out if she needs them.
    • Ironically, the hood itself has horns. However, since they are clearly part of the hood, it still serves to hide the fact that Lilith has horns of her own.
  • It Amused Me: Her modus operandi.
  • Karma Houdini: Chapter 40 shows that she hasn't changed her ways, and again she gets saved from serious troubles only to disappear and get away scot-free from what she'd done. The only time she was properly punished, she turned out to be Too Kinky to Torture.
  • Kick the Dog: She could have hypnotized Manako to be rid of her, instead she simply exploits her insecurity about her eye by pretending to be a child traumatized by the eye.
  • Mind Manipulation: She can hypnotize people, and tries to get Centorea to rape Kimihito as a prank.
  • Older Than She Looks: Like Papi she is an adult but has the body of a small child. Her profile notes that she enjoys abusing this in petty ways to get into movie theaters and buses while paying only child prices. This backfires on her big time when she tries picking a fight with Rachnera, who notes that she's an adult in a childlike body and therefore can be "punished" as an adult.
    • The anime end-card for Episode 12 reveals that this is because she belongs to the Lesser Devil subspecies, who are noted to look like children.
  • Our Demons Are Different: She's a devil, but the only supernatural powers she seems to possess are hypnotism.
  • Outside-Context Problem: Unlike the other one-off villains so far, Lilith has no real motive beyond causing mischief for her own amusement, though she does gain a motive later on in trying to get back with Rachnera.
  • The Prankster: Continuously pranks Centorea and Kimihito throughout Chapter 21, undergoing Serial Escalation until she brainwashes Centorea into trying to rape Kimihito. It bites her in the ass when she presses Rachnera's Berserk Button.
  • Psycho Lesbian: She greatly enjoys being tied up and "tortured" by Rachnera to the point where she was begging to be "rewarded". In Chapter 34, she's seen deliberately looking for Rachnera and is upset that they haven't met up again since their last "encounter".
  • Sexy Coat Flashing: She's wearing a coat, underwear, and not much else.
  • Too Kinky to Torture: Judging by the last page in chapter 21 she really enjoys bondage (although played with in that said bondage turned her into Rachnera's quivering sub).
  • The Unfought:
    • Played with. Centorea misunderstands the nature of her "hypnosis," and Kimihito never even learns she existed, but Rachnera catches her and settles her good.
    • In Chapter 40 she and Kimihito finally get face-to-face (and face to... other body parts). He's immune to her suggestive poses, and when she tries hypnotizing him, he ends up acting exactly the same way he already was.
  • Villain Decay: Happens to her even faster than it did Draco. Between Rachnera turning her into a quivering sub and Polt punishing her for going out without her host family, whatever threat she once posed is long gone.
  • What Happened to the Mouse?:
    • She's apparently been forgotten about/disappeared after Chapter 21 as she wasn't seen inside the attic in newer chapters. This is averted by the bonus material in volume 5 revealing she was released by Rachnera and subsequently punished for going out without permission/unaccompanied by having to run a marathon.
    • She shows up again in the main story in Chapter 34, distressed at the thought Rachnera might have abandoned her.
    • Part of Chapter 40 is dedicated to her. She's still as mischievous and infatuated with Rachnera as ever.
  • Winged Humanoid: Has small bat-like wings.
  • Wings Do Nothing: She can't fly with her wings, hence why she ran away from the wild boar instead of flying.
  • You Gotta Have Blue Hair: She has light turquoise hair.


A yuki-onna running an onsen resort.

  • Acquired Poison Immunity: Is using slow, constant exposure to the springs she works in as a method of training her body to better withstand her natural weakness to heated temperatures.
  • Amazing Technicolor Population: She's one of the less monstrous girls in the series, looking much like a human with blue skin, snow white hair, no pupils and a shapeshifting ornament of ice constantly somewhere in her hair.
  • Crazy-Prepared: She is really thorough when it comes to designing her resort, having accommodations for practically every monster girl imaginable. May apply to her lover just as much though, since he designed much of it.
  • Early-Bird Cameo: First appeared in a 4koma on Okayado's twitter.
  • Emotional Powers: She loses control of her ice powers when she loses her stoic expression.
  • Face of a Thug: Her cold demeanor and lack of smile has scared off numerous customers.
  • Frozen Face: She's trying to learn how to smile for the customers, but she has a hard time at it.
  • An Ice Person: As befitting a yuki-onna, though she has many difficulties running a hot-springs resort because of her powers.
  • Impossibly-Low Neckline: She wears her kimono somewhat loose, leaving an off-the-shoulder neckline. Though it works since she has an obi sash to hold the dress.
  • Interspecies Romance: Surprising no one, she's dating the human future heir of the resort.
  • Kryptonite-Proof Suit: Wears a special suit to maintain the springs despite their heat.
  • A Lizard Named "Liz": A yuki-onna named Yukio.
  • Personality Powers: Subverted. She isn't really "cold" so much as she just has difficulty expressing herself.
  • Rapunzel Hair: Her hair reaches down to her knees.
  • Reality Ensues: The mixed bathing ended up being so successful that many of her patrons became couples and often return to her resort for weekend getaways and the like. The trouble is, many of the extra-species have little inhibition (if any at all) either due to a species-wide trait or sheer desperation to ensure future generations of their species, and frequently try to have sex in the pools, regardless of whether or not there’s an audience. As a result, Yuki’s been having difficulties in enforcing her own rules, and after receiving numerous complaints, she’s afraid she’ll soon start losing customers. She solves this by hiring bouncers of a sort to help monitor the behavior of patrons.
  • Relationship Upgrade: Revealed in an omake that she is now engaged to her boyfriend.
  • Signature Hair Decs: Her hair is done up using a hairclip created from her own ice, resembling a snowflake that changes everyday due to her cold aura.
  • Single Woman Seeks Good Man: She is completely in love with her boyfriend because he's kind, considerate and has a cheerful smile.
  • The Stoic: It's a problem she's had to work on, since her cold demeanor is scaring off customers.
  • Sugar-and-Ice Personality: Though she's usually quite controlled, she melts when thinking about her boyfriend or when embarrassed by displays of emotion.
  • Symbol Motif Clothing: As befitting of a yuki-onna, Yukio wears a kimono adorned with snowflakes.
  • When She Smiles: When talking about her beloved young master, she unconsciously smiles which Kimihito notes. However, this causes Yukio to lose control of her composure and nearly freeze Kimihito.
  • Youkai: Yukio is a yuki-onna, a Japanese ice monster.

    Ils Nineta (Luz Ninetei)

A nine-tailed fox in the exchange program, working at a shrine as a miko.


A bodyguard working for the Talio Private Security Company to deal with extraspecies threats.

  • Ambiguously Gay / Ambiguously Bi: She seemed quite receptive towards Draco after being given flowers and a teddy bear by her, or at least apolegetic for her earlier animosity. Although many people do mistake Draco for a male at first glance.
  • Animal Eyes: She has slitted pupils.
  • Consummate Professional: Liz takes her job as a bodyguard very seriously, and does not react well to interferences.
  • Cute Little Fangs: Most noticable when she's shouting.
  • Dangerous Forbidden Technique: Since lizards store nutrients in their tail, she risks dying of malnutrition if she cuts her tail off. Kimihito stops her from doing that upon hearing this.
  • Death Glare: When Draco hits on her, Liz intimidates the dragonewt with a menacing glare, bared fangs, and Hellish Pupils.
  • The Ditz: She berates Kinu for being stupid, but she's not much better off herself.
  • Drives Like Crazy: She keeps forgetting one of the most basic rules of driving: keep your eyes on the road.
  • It Only Works Once: Stated word-for-word in her profile about her tail-detachment comment. Her tail would grow back, but with cartilage instead of bone and lacking the internal structure to readily detach again.
  • Lizard Folk: She's a lizardman. Draco initially mistakes her for a dragonewt.
  • A Lizard Named "Liz": Literally.
  • One Steve Limit: The scanlators had initially intended to use Liz as the name for the kitsune in chapter 32. However, after the reveal of this Liz in chapter 34, it was quickly changed to Luz.
  • When All You Have Is a Hammer...: You're being chased? Clearly the best thing to do is to cut off your tail and run.


A bodyguard oni working for the Talio Private Security Company to deal with extraspecies threats.

    Sebasstian & Flounnder (Potemkin)

A pair of fishmen looking to secure the safe return of a certain VIP.

  • Aerith and Bob: Sebasstian is quite the common name, but Flounnder? Not so much.
  • Batman Can Breathe in Space: Both are literal fish out of water. If they're anything like Mero, they too can likely breathe on land so long as their gills are damp.
  • Bitch in Sheep's Clothing: While they initially seem like faithful servants to Mero, it's later shown that they're quite selfish.
    • Whenever something goes wrong, their first concern is what will happen to them, even if someone's life could be in danger.
    • Instead of contacting the authorities to rescue Mero from Octo, they have Kimihito and the girls save her instead because they fear they'll lose their jobs if people find out they knew where Octo was because they tried to ask her for a favor.
  • Dirty Coward: Rather than accompany Kimihito and the others on their rescue mission, they instead drop them off on the island and drive their boat away.
  • Dub Name Change: To prevent a case of Lost in Translation, Potemkin was changed to Flounnder as a reference to The Little Mermaid instead.
  • Fish People: They look like fish with arms and legs attached (they even still have a tail!). In other words, reverse mermen. They know where Octo lives, because they wanted her to turn them into handsome mermen instead.
  • Lost in Translation: Their Japanese names are actually puns on the fish-species they resemble. The English version calls them Sebasstian and Flounnder instead.
  • No Cartoon Fish: Look at the picture.
  • Poor Communication Kills: Semi-justified. They send a bunch of untrained amateurs after Octo instead of MON commandos because they don't want to lose their jobs on account of once trying to bargain with her. Not telling them about the giant sea anemones that live in the cave though... that's just them being lax.
  • Shout-Out: Their English names are a clear reference to The Little Mermaid.
  • Those Two Guys: "Those Two Fishes" is a much more accurate description, but it gets the job done.


A scylla, described as a villain and deceiver of mermaids by Sebasstian.

  • Animal Eyes: She has octopus pupils.
  • Astonishingly Appropriate Appearance: Her hood looks like an octopus head, and the buckles around her collar look like octopus eyes. Combined with her tentacles, they give her the appearance of a giant octopus, especially when shown as a silhouette.
  • Breaking the Fourth Wall: Or even the fifth. In one omake she lends one of her skimpy bikinis to Manako, who is enormously flustered. Octo then asks her why she's embarassed, since she appears naked in every episode of the anime during the ending sequence! For that matter, Manako says that the anime producers didn't ask her permission to put these images in the ending...
  • Carnivore Confusion: She cooks takoyaki, octopus dumplings, in her shop. Then again, octopi are notable for eating members of their own species anyway.
  • Dark-Skinned Blond: Her hair-tentacles are noticeably lighter than her skin.
  • Expy: A half-octopus being described as a 'villain' and 'deceiver'? She's like a thinner, prettier Ursula. It fits quite well, considering Mero's obsession with the fairy tale. Ultimately subverted as she's a perfectly friendly woman with no magical powers at all.
  • Fantastic Racism: She's been accosted by countless mermaids and mermen seeking magical assistance, had malicious rumors spread about her when she was unable to help, and then made a scapegoat for the Mermaid queen's plot purely because she's a scylla.
  • Friendly Rivalry: With Rachnera. They hit it off after using their various means of constriction to duel.
  • In the Hood: She wears a hood that resembles an octopus's head.
  • Kansai Regional Accent: Maybe to make her sound more funny or sympathetic.
  • Let's Get Dangerous!: Inverted. She initially presents herself as a serious threat when her pet anemones very quickly incapacitate Cerea and Miia, and she essentially fights Rachnera to a draw, all while holding Kimihito hostage and threatening to rape him if Rachnera stops fighting to go look for Mero. She later displays a much more laid-back and goofy personality once it's cleared up that Kimihito and company are merely worried about their friend, not assassins sent by the mermaid kingdom.
  • A Lizard Named "Liz": Octo, from octopus.
  • Lovable Sex Maniac: Had her tentacles down Kimihito's pants literally seconds after meeting him. This was mainly done to get Rachnera to let down her guard, but her subsequent fondling of Kimihito and offer of a "reward" was certainly genuine.
  • Not Evil, Just Misunderstood: She's not the evil witch we're initially lead to believe she is. She's actually a nice person and she can't even use magic; she was merely framed through rumors by the queen. Her "kidnapping" of Mero was also a big misunderstanding.
  • Oblivious to Love: In an omake from volume 16, there's a human that repeatedly approaches her for love advice about a scylla that can't seem to notice his feelings at all.
    Octo: "Man, ya just gotta go all out and tell her how ya feel! Go get her tiger!!"
  • Prehensile Hair: She has tentacles instead of hair that she uses as an extra pair of hands.
  • Red Herring: She's set up as a serious villain and the source of many problems in the mermaid kingdom, but she's an innocent scapegoat for a larger scheme by Mero's mother.
  • The Scapegoat: She has been framed as an evil witch who deceives mermaids as part of a scheme by the queen.
  • Solitary Sorceress: People seeking magical solutions to their, often trivial, problems have forced her to isolate herself. Mostly because she can't do any magic to begin with. Funnily enough she later decides to take what she learned giving such people advice by going to the Arctic Inn to offer her services as a couples counselor to make some money.
  • Spell My Name with an "S": Oct or Octo.
  • Southern Belle: Octo has a very pronounced southern accent in the English print of the manga.
  • Unscaled Merfolk: Unlike Mero, Octo is a scylla; in place of a fish tail, she has octopus tentacles.


A jiangshi looking for a Japanese man to marry.


A killer bee who is after Kimihito.


A matango that Papi found outside the house and brought inside.

    Curie Drakulya

A vampire who entered Japan illegally.

  • Acrophobic Bird: In The 'Verse, vampires can fly using batlike wings, enjoy sleeping in coffins, can control bats with supersonic signals, and can pretty much only consume blood because they can only consume liquids with high iron content. Our Friendly Neighborhood Vampire is (at least initially) afraid of heights and can't fly, afraid of dark enclosed spaces and can't sleep in a coffin, is afraid of bats, is Afraid of Blood, and is generally too timid to consciously assault someone to drink their blood (the only times she did so, she was being possessed by her father's ghost, and desperate because her only nourishment for that day was toxic).
  • Afraid of Blood: She can't stand the sight of blood.
  • Alternate Identity Amnesia: She has no memory of her actions while under her father's control.
  • Claustrophobia: The reason she refuses to sleep in coffins.
  • Cute Little Fangs: Nope! In the vein of Rachnera, her mouth's full of razor-sharp, shark-like ones.
  • Demonic Possession: When night falls, her father's ghost possesses her.
  • Disappointed in You: Her father was incredibly disappointed in her for not being able to continue the legacy of the slowly dying Vampire race.
  • Embarrassing Nickname: Coolie. Cool as a cucumber!
  • Failed a Spot Check: Makes her appearance by biting one of the members of MON and sucking their blood. Unfortunately for her, said member was Zombina, meaning poor Curie ends up quaffing down formaldehyde.
  • Fighting from the Inside: When Curie's father tries to force her to bite Papi, she resists him by biting herself instead.
  • Genki Girl: Once her father's ghost is dealt with, she perks up a lot at night, becoming a lot more energetic and gregarious than her shy daytime self.
  • Ill Girl: She has very low stamina, a pale, drawn complexion, and nasty circles under her eyes: according to her profile, her haemophobia has left her malnourished.
  • Ironic Fear: She's really, really bad at being a vampire. She can't stand the sight of blood, fears heights, doesn't like cramped dark spaces, and is afraid of bats. This personality goes completely out the window at night, however.
  • Kiss of the Vampire: You expected anything different from this series? Her preparing to bite Papi is played up a good amount, with the harpy blushing and sweating profusely as Curie starts licking her neck.
  • Lost in Translation: Papi calls her "Cucumber" (Kyūri), in Japanese. Since it doesn't fit in English, the scanlators went with "Coolie" instead.
  • Lunacy: Almost to the point of being a split personality. During the day, she's polite and completely harmless. During the night, she's terrifying and predatory due to her evil father possessing her.
  • Mystical White Hair: While she has white hair and is a vampire, about the only thing supernatural about her is her father possessing her: she has none of the stock vampire powers beyond flying with her wings.
  • Our Vampires Are Different: They're not undead, to begin with: they're living being afflicted with a disease that alters their behavior and biology. Vampires have a weak digestive system and can only consume liquids (such as blood) for sustenance. They create ultrasonic waves that can be used to control bats. They have bat-like wings that enable them to fly, and, like Harpies, the wing makes up the entire arm, with their membrane going down to about their hips. Their weakness to sunlight is explained away by having very sensitive skin that is easily harmed by UV rays, and their weaknesses to garlic and silver are a result of allergic reactions. They do cast reflections, however, and their weaknesses to crosses is simply a cultural taboo. They sleep in coffins partly to shield themselves from sunlight, and partly out of species-wide habit, though Ms. Smith isn't entirely sure on the latter. To further complicate matters, Curie's profile and notes on the vampire virus suggests that the original, true 'vampires' died out long ago. This would mean Curie is simply a chiropteran demihuman infected with the virus.
  • Parental Abandonment: Both her parents are dead.
  • Sleepy Head: During the day, she's the equivalent of a human staying up late. Once her father's gone, she's much more energetic at night.
  • Spell My Name with an "S": Curie or Kyurii.
  • Supernatural Gold Eyes: Although how supernatural vampires are in this setting is debatable.
  • Why Did It Have to Be Snakes?: She's terrified of bats, even cute ones like fruit bats.
  • Winged Humanoid: Wings for arms variant.
  • Your Vampires Suck: Oh lord, does it suck being a vampire in this series. Curie's profile pretty much has her dethrone Draco in regards to having an incredibly troublesome body: skin hypersensitive to UV rays, poor eyesight, allergies to silver and garlic, a digestive system so weak it limits her to a liquid diet (and she's malnourished because of her aversion to blood), wings that limit her wardrobe, sensitive ears that make noisy places hard to handle, and no cool supernatural powers like turning into mist, hypnosis or eternal life to make up for it. It's actually not too shocking that the vampire race is going extinct. Ironically it is theorized that vampires aren't even really originally vampires, but rather the remnants of a species of bat-like monsters that became infected with the vampire virus in ancient times.


A leech girl who attended the extraspecies expo.

  • Bizarre Alien Biology: She uses an exoskeleton suit to look more humanoid, because without it her tentacle-like limbs just wriggle around. It looks very scary, even more when she's splashing around in the pool. Then there's the whole hermaphrodite matter.
  • Exotic Eye Designs: Being a leech-person, she has eyespots instead of normal eyeballs. They're normally drawn as either dots or lines that convey her mood.
  • Genki Girl: She's always energetic, so much that the other girls are afraid she might get carried away if they share a pool with her.
  • Hermaphrodite: Like an actual leech, she's an hermaphrodite.
  • Mix-and-Match Critters: While she consumes blood like a leech, her appearance is more similar to a hammerhead worm, especially her head.
  • Shameless Fanservice Girl: Prefers to lounge around in the nude. This annoys Moskii, who forces her to wear her exoskeleton suit and swimsuit. She also doesn't mind showing off her masculine sex organs (off-page) when the other girls are curious.


A mosquito girl who attended the extraspecies expo.


A lamprey eel mermaid who attended the extraspecies expo.

  • A Lizard Named "Liz": 'Yatsume' means eight-eyes, which refers to the Japanese name for lampreys "yatsume-unagi" (eight-eyed eel)'
  • Nice Girl: She cooks and cleans for the other girls, and wants to befriend Curie, despite their incompatible sleep cycles.
  • Seldom-Seen Species: Lamprey eels aren't that well known in popular media.
  • Supreme Chef: A variation. In addition to being a good cook, she knows how to prepare meals her more-hemovore friends can enjoy.
  • Unscaled Merfolk: She's an eel, and as such she can walk on land like a lamia. And unlike the other three girls, she doesn't depend entirely on blood for sustenance.


A large slime who entered Japan illegally.

  • Bizarre Alien Biology: The contaminated waters it absorbed at some point in its life are responsible for its resistance to water. Those impurities were also used to create a skeleton to support its massive body, lacking the sheer water pressure Suu uses to maintain her giant form.
  • Breath Weapon: She copies Suu's ability to fire a beam of pressurized water from her mouth.
  • Fusion Dance: Of the Power Booster variety, as per standard slime breeding. She's aiming to absorb Suu, the brains to her brawn.
  • Knight of Cerebus: Unlike every other character to appear before her, Nega-Suu is nothing more than a threat, and there isn't anything about her that gets played for humor or fanservice. Downplayed after she is defeated and regenerates into a more peaceful and intelligent state (indicated by her being shown to have learned to read). She later manages to fulfill her absorption instinct in another way by becoming the slime that directly produces more of the new humanoid slime species.
  • Monster Progenitor: As a nutrient gathering slime (and quite a successful one given its size), it's initial instinct was to absorb a experience-gathering slime and then divide into new slimes that continue the cycle of nutrient and information gathering. Suu was its target and it crossed an ocean to find her. However, after absorbing Suu's hand and interacting with her repeatedly, it learns to become a female humanoid slime itself, the first of the "black slime" subspecies. After her defeat, Nega-Suu mellows out, learns to read, and her filtering abilities are put to use in an experiment at Yukio's hot spring inn. During said experiment she absorbs DNA from many types of monster girls, and learns to use the information she gains from them to split off and produce new humanoid slimes of various shapes and colors, who proceed to find and leave with male human partners to go out into the world. Thus the humanoid slime becomes a functional species.
  • Non-Malicious Monster: Unlike most other antagonists in the story, her attempt to absorb Suu isn't done out of malice or uncontrollable undesired biology. She's more like a wild animal trying to follow her base instincts of slime reproduction. Once she is stopped and contained, and inadvertently allowed to follow her instincts in another way, she becomes rather docile.
  • Only Known by Their Nickname: The Broker refers to her as Nega-Suu in the middle of the fight to distinguish between her and Suu, the name sticks.
  • Spikes of Villainy: Whereas Suu is always smooth and curvy no matter what form or size she takes, Nega-Suu has spikes jutting out of each of her joints except her hips. However, that's only while she's acting as an antagonist due to all that contaminated water. After her core is pulled out and allowed to reform with purer water, which also results in her losing her antagonist status, she loses the spikes.
  • Stock Ness Monster: It is initially mistaken for this due to only a single eyed tentacle coming up out of the water.
  • Story-Breaker Power: Unlike Suu, this slime is capable of being completely submerged in large bodies of water without the risk of being destroyed (its stated to have changed its body into a gel-like form to keep from disintegrating). When subjected to an excess of hydrophilic polymer in an attempt to break it down to a containable size it simply adjusts its only somewhat reduced mass into a new form and breaks free, revealing a massive female body differing from Suu only in that she is covered in spikes. That said, if one can reach its core and extract it, the core seems to be relatively helpless.
  • Super-Persistent Predator: Its entire purpose for sneaking into Japan was to find and absorb Suu, who is assumed to be the most extraordinary of experience gathering type slimes, to produce even more powerful slimes after they combine and split once more. Neither rivers nor hydrophilic polymers do much to slow it down.
  • Unskilled, but Strong: Nega-Suu's tentacles aren't as dexterous as Suu's, but she makes up for it with colossal strength granted by her gel-like body and internal skeleton.

    Lamia Tribe

Miia's friends from her village are Shequa, Sanka and Maru.

  • Curtains Match the Windows: Shequa has blonde hair and golden eyes.
  • Has a Type: Discussed in an omake. Sanka would like a guy she could just have fun with, basically a friend with benefits. Shequa dreams of landing a really kind guy who would remember and celebrate all kinds of anniversaries with her (first date, first time having sex, and so on). Maru on the other hand is down for just about anyone provided they are really into all kinds of sex all the time.
  • You Gotta Have Blue Hair: Sanka has green hair and Maru has pink hair. In contrast, Shequa's blonde hair seems almost pedestrian. Then again, their hair colours match their scales, so Shequa's golden scales are also rather unusual, compared to the colours most snake scales come in.

    Echidna Tribe

One of the four Serpentine tribes present at the Stud Tournament

  • Dude, She's Like, in a Coma!: The Echidnas intended to strangle Kimihito into unconsciousness before getting him off so they wouldn't have to face him in the intended fashion in the tournament.
  • Facial Markings: Echidnas have lightning bolt shaped marks on their face as a coming of age symbol. They call them "tattoos", but they're actually (washable) paint.
  • Has a Type: One of the key traits the Echidnas seek in their men is power, so their mates tend to be incredibly muscular.
  • The Lad-ette: Seems to be their hat: Echidna are (at least on the outside) violent, crude and tough as nails.
  • Real Men Wear Pink: As it turns out, their boyfriend is an excellent craftsman and made their earrings, rings, and necklaces.
  • Tomboy with a Girly Streak: Despite their rough, boyish exteriors, they still wear adorable snake jewelry and are squishy romantics at heart. They like strong men because of how it feels when they are hugged by one, and are also fond of romantic comedies.

    Melusine Tribe

One of the four lamia tribes present at the Stud Tournament

  • Entertainingly Wrong: When they finally get Kimihito's pants off, they discover he doesn't have an erection around them. The tribe collectively believe he's "a pure boy" who can only be aroused by someone he genuinely loves, meaning they can't have their way with him. The narration reveals that in reality their excessive lewd and crass behavior was just a turn off for him.
  • Extreme Libido: You thought other Lamia tribes or even the Satyr were bad? They have NOTHING on the Melusine. They flat out admit to Kimihoto that they couldn't care less about the tournament's rules, and immediately try to have their way with him.
  • Wings Do Nothing: Played with. Melusine wings lack the musculature to get them off the ground and are useless on land. However, they are noted to be used to help them swim.

    Medusa Tribe

One of the four lamia tribes present at the Stud Tournament

  • Face of a Thug: Medusae have a perpetual scowl, which has been known to scare anyone who looks at them, so they try to alleviate their gaze by wearing glasses.
  • Meganekko: Due to the fact medusae have an inherently intimidating gaze, enough to sometimes make others freeze in terror, every member of this tribe wears glasses in an effort to give a less menacing impression, which does well to highlight both their overall stoicly intelligent demeanors and their more understated, yet still very much present, sensuality compared to other lamia.
  • Not So Above It All: They normally have little interest in the Stud Tournament and overall behave very conservatively compared to the other types of lamia who focus heavily on sex. However, should the "manliness" of their chosen mate be challenged/insulted they will readily show off how passionate they can be with him.
  • Sexy Secretary: Rather than turning people to stone with their gaze, Medusa in this series seem to have a 'stony' demeanor, dressing in fancy suits and sporting Scary Shiny Glasses. Kimihito outright asks if its some kind of fetish they are into, which they promptly deny.
  • Stating the Simple Solution: In the face of the Exchange program outlawing kidnappings and reducing the number of men exposed to the Serpentine races, the Medusa Tribe came up with a very practical plan. To simply hire men to join their society to reproduce. It would bring in far greater numbers than the kidnapping, and the potential of these men falling in love and staying for free would greatly help the species long term. Miia still objects to the plan because she believes in finding one's personal soulmate.


A young lightweight centaur who has come to train under Cerea in order to improve her racing form.

  • The Ace: She's the fastest among her peers at the centaur sports school she attends. She also clears Cerea's (hastily-assembled) obstacle course with ease.
  • Meaningful Name: She is named after the Andalussian breed of racehorses.
  • Sempai/Kohai: While persuading Cerea to train her, she refers to her as the former, and Cerea likewise reciprocates by referring to her as the latter.


A nightmare centaur looking for a way to fulfill her species' special needs.

  • Dark Is Not Evil: She is mentally compelled to create nightmares, looking for any excuse to give them to people, but she's not an outright bad person, only doing so when she's intentionally and willingly allowed the chance.
  • Everyone Has Standards: She may be desperate for a way to fulfill her compulsion to inflict nightmares, but she refuses to break into people's houses just to have more targets. She may have an urge to do something that stresses people out, but she's not an outright criminal.
  • Face of a Thug: She has a rather creepy disposition, particularly her having Creepy Shadowed Undereyes (which bring to mind sleep-deprivation-induced Exhausted Eye Bags brought by intense nightmares), but outside of her sheer compulsion to give people stressfully terrifying nightmares, she's actually a rather sweet and considerate girl, refusing to afflict people unless she's given explicit permission, and apologizing to Kimihito when she accidentally did so unprompted after seeing him napping peacefully.
  • The Gadfly: While she's against forcing nightmares on people, she does get a bit of a kick out of creating dreams her targets find incredibly humiliating, such as a Dream Within a Dream where they wake up the first time to find that they've soiled themselves in front of their lover, only to then wake up for real.
  • Interspecies Friendship: Develops one with the baku(dream-eating tapir) by the end of her chapter
  • Meaningful Name: She is a NIGHtmare who can affect DREaMs.

    Cheron du Pell

A heavyweight centaur who has taken up farming, now that strength of arms is no longer as important as it once was.

  • Amazonian Beauty: She's a very attractive centaur lady with an impressive busom, and she is also visibly muscular, having nicely built arms, well-toned stomach muscles, and thick legs. When she goes through her temporary Art Shift this is even more pronounced, still being just as attractive while becoming outright buff, her arm muscles getting thicker and her stomach getting notable abs.
  • Boobs of Steel: To an even greater extent than Cerea, as heavyweights were the, well, heavyweights of the battlefield, and she is both taller and stronger, as well as being significantly more well-endowed.
  • Call to Agriculture: With centaur culture changing in recent times (jousting becoming simply a sport for instance), she decided that becoming a farmer who can optimize work in places where her strength and mobility were useful over machines was the best way for her to live out a life as a "knight".
  • Kansai Regional Accent: She has the classic case of a thick Kansai accent, turned into a heavy southern accent in the English translation. Due to her heavy dedication to farming, Cerea and Kimihito came under the impression she was an Idiot From Osaka, but it turns out she is actually quite a bit smarter than that.
  • Let's Get Dangerous!: She acts like a bumbling and kindhearted, if strongly forward-thinking, lady under normal circumstances. But if anybody tries to threaten her livelihood, she performs an outright Art Shift into something out of Fist of the North Star before showing the offending threat who they're dealing with. She goes right back to normal after the problem is dealt with.
  • Meaningful Name: She is named after the Percheron breed of workhorses.
  • Retired Badass: Like many other heavyweight centaurs, she used to be one of the fiercest knights in centaur society, specifically being "The Great Warrior of the Pell Family", as stated by Cerea. Also like other heavyweights, she had a Call to Agriculture once knighthood became obsolute, lovingly tending to her crops when she can. Just because she's retired doesn't mean she's any weaker, though, as some wannabe produce thieves learn the hard way.
  • Smarter Than They Look: Cerea and Kimihito initially had the impression that she was simply a farming-obsessed country girl, but she later shows she actually has well thought-out plans to create a self-sufficient and highly-profitable agricultural system for extra-species by utilizing their skills and physical abilities in order to get work done without the need for costly high-maintenance stuff like tractors. Hearing all this really surprises them.
  • Underestimating Badassery: Cerea heavily underestimated her strength at first, despite being a strong heavyweight centaur, since she seemed like a Kindhearted Simpleton. She realizes her mistake after seeing her beating a biker gang to a pulp when they tried to steal her produce.

Alternative Title(s): Daily Life With Monster Girl Others


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