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Monster Girl Species List A-Z: Origins and Personalities
By Metavulgar · updated 2026-11-11 · 6 min read
This monster girl species list runs from A to Z across 34 adult fantasy beings. For each one you get the origin (a myth, a folklore tradition or a game) and the personality tropes that fiction hangs on her. Every being here is grown, often centuries old, and a character with her own will.
Use it as a field guide before you choose a story, or as a character reference when you write one. For an at-a-glance table see monster girl types, and for the opinionated order see the tier list.
How to read the entries
Each entry follows the same pattern: Name (origin). A line of lore, then the tropes. Where a type comes from a game or modern writing instead of ancient folklore, I say so. Where lore is disputed, I say that too. The tropes are the common shapes of the character, not rules.
A to D
- Alraune (German folklore and games). A plant woman tied to the mandrake root of old lore. Tropes: sweet-voiced, patient, secretly territorial about her garden.
- Arachne (Greek, via the Roman poet Ovid). A weaver who challenged Athena and, in the best-known version, became a spinner. Tropes: perfectionist, patient, loves patterns and plans, ties things neatly.
- Banshee (Irish folklore). A keening spirit of foretelling. Tropes: solemn, melancholic, strangely tender at night.
- Centaur (Greek). A horse-bodied people of the Thessalian hills. Tropes: proud, athletic, direct, wary of cages.
- Dragon girl (many cultures). Scaled and horned, with a hoard. Tropes: vain, fierce, possessive, secretly romantic. Hear one in curled in the dragon girl's mountain hoard.
- Dryad (Greek). A tree nymph bound to her tree. Tropes: gentle, rooted, stubborn, slow to trust.
E to K
- Elf (Norse and Germanic folklore). In modern fantasy a long-lived, graceful forest being. Tropes: aloof, ageless, dry-humored, quietly sentimental.
- Empusa (Greek). A shapeshifting spirit in the train of Hecate, famous for one bronze leg. Tropes: seductive, theatrical, unsettling.
- Gorgon (Greek). Medusa and her sisters Stheno and Euryale, with snakes for hair and a stone gaze. Tropes: wry, guarded, protective, lonely. Try held still in the gorgon's garden.
- Harpy (Greek). Winged storm-spirits who snatched. Tropes: proud, fast, territorial, brutally honest. Early sources disagree on how many there were: Homer names one, Hesiod two.
- Jorogumo (Japanese). A spider yokai who can take a woman's shape. Tropes: elegant, patient, a gracious host with a hidden purpose.
- Kitsune (Japanese). The fox spirit who gains tails with age. Tropes: playful, clever, loyal once she chooses. The kitsune entry has the lore.
- Kobold (German folklore, then games). Household and mine spirits turned small scaled people. Tropes: eager, cunning, comic, fiercely loyal.
L to O
- Lamia (Greek). A queen of Libya loved by Zeus and punished by Hera. Later a serpent-bodied seductress. Tropes: regal, patient, wrapping. More in lamia and naga.
- Lorelei (German, from an early 1800s poem about a Rhine rock). A river siren who lures boatmen. Tropes: haunting, melancholy, drawn to a song she cannot stop singing.
- Mermaid (many cultures). Fish-tailed women of the water. Tropes: dreamy, moody, drawn to surface sounds.
- Minotaur girl (Greek). A bull-headed figure from the Cretan labyrinth, reimagined as an adult warrior woman. Tropes: blunt, strong, protective, gentle in private.
- Moth girl (modern fan creation). Not a myth, a fandom invention. Tropes: drawn to light, soft-spoken, a little reckless.
- Naga (South and Southeast Asian). Serpent beings tied to rivers and treasure. Tropes: dignified, ancient, guardians of something precious.
- Oni (Japanese). Horned ogres, sometimes punishers, sometimes guardians. Tropes: blunt, hearty, honest.
P to T
- Rusalka (Slavic). A water spirit of rivers and lakes, often drawn from restless, wronged women in the stories. Tropes: wistful, singing, dangerous when ignored.
- Pixie (British folklore). Mischievous small spirits. In adult fiction they are grown beings in a small body. Tropes: prankster, fast-talking, secretly sentimental.
- Siren (Greek). Singers whose voice wrecked ships. Early sources show them winged; the fish tail came later. Tropes: patient, seductive, obsessed with listening. Try sink, held under the siren's tide.
- Slime girl (modern games). The slime started as the weakest enemy in a 1980s role-playing game. Tropes: soft, curious, devoted, shapeshifting.
- Tengu (Japanese). Winged mountain spirits; in monster girl form, proud mountain warriors. Tropes: disciplined, haughty, secretly fond of company.
- Sphinx (Greek and Egyptian). A winged riddling figure. Tropes: teasing, intellectual, loves tests.
- Succubus (medieval European). A night visitor of sleepers. Tropes: negotiating, playful, warm. Start with what is a succubus.
- Tentacle-kin or eldritch lover (modern horror). Not folklore. Tropes: alien, curious, strangely patient.
U to Z
- Undine (Renaissance, from the writings of Paracelsus). A water spirit who gains a soul through love. Tropes: yearning, graceful, vulnerable and dangerous when betrayed.
- Valkyrie (Norse). Choosers of the slain. Tropes: disciplined, bright, loyal, a touch grim.
- Vampire (Eastern European folklore). Undead drinkers of vitality. Tropes: elegant, nocturnal, ancient, restrained hunger.
- Werewolf girl (European). A humanoid woman with wolf traits at the full moon. Tropes: fierce, loyal, possessive, sentimental about the pack.
- Yuki-onna (Japanese). The snow woman of winter legends. Tropes: cold surface, quiet, melting slowly.
- Zombie girl (modern horror, with Haitian folk roots). Tropes: stubborn, loyal, dry humor about being undead.
Quick table: species by temperament
| Temperament | Species |
|---|---|
| Regal and patient | Lamia, naga, dragon girl, gorgon |
| Proud and fast | Harpy, centaur, tengu, valkyrie |
| Playful and clever | Kitsune, pixie, kobold, sphinx |
| Tender and strange | Slime, dryad, alraune, eldritch lover |
| Seductive and ancient | Succubus, siren, empusa, vampire |
| Quiet and cold | Yuki-onna, banshee, rusalka |
| Blunt and warm | Oni, minotaur girl, werewolf girl |
Patterns across the list
Before the groups, a note on how I assembled this. I started from folklore that is well documented, then added game and fan-born types separately so that nothing modern is passed off as ancient. I left out any being whose lore centres on the young, since this is an adult list. Where two traditions overlap, such as lamia and naga or siren and harpy, I list them separately and tell you where fiction blurs them.
Look at the origins column in your head and four groups appear:
- Greek: lamia, harpy, siren, gorgon, centaur, dryad, empusa, sphinx, minotaur, arachne (retold by Ovid).
- Japanese: kitsune, oni, jorogumo, yuki-onna.
- Other folklore: naga, banshee, pixie, kobold, valkyrie, vampire, werewolf, succubus.
- Modern inventions: slime, moth girl, eldritch lover, the monster-girl look itself.
The tropes also cluster. Serpent types tend toward patience and possession. Winged types toward pride and speed. Spirit types toward bargains. Water types toward longing. If you know a type, you can guess what her first line will be.
Reading the origin tags
When an entry says Greek, it means the figure appears in ancient Greek sources. When it says Japanese, it means yokai tradition. When it says modern, I mean the type was created in games, fan art or horror writing. Tropes are always modern, even for ancient beings: the shy gorgon or the teasing harpy is a character choice made by recent writers, not something the old myths say. Knowing the difference lets you enjoy both layers.
Lore warnings: what the list does not claim
Several entries blend old myth with modern invention, and I try to flag that. The harpy and siren overlapped in antiquity, and the fish-tailed mermaid look came to the siren late. The lamia of Greek tradition is not the same figure as the Asian naga, though fiction merges them. The undine comes from a Renaissance writer, not from ancient folklore. The slime, moth girl and eldritch lover are inventions. Treating each origin honestly makes the list more fun, not less, because you can enjoy the costume and know which parts are old.
What to do with the list
Pick two or three types and notice what you feel when you read their tropes. That reaction tells you where to listen first. Start Here is five nights with one monster each and covers several of these types. When you are ready to explore, the personality tropes guide breaks down the traits across species, and monster girl names has a naming list by culture.
Frequently asked questions
How many monster girl species are there?
There is no fixed number. Fan catalogues list hundreds, but a working core is about thirty: lamia, harpy, arachne, slime, kitsune, oni, succubus, werewolf girl, centaur, mermaid, dragon girl, gorgon and more. This list covers 34 with origins and tropes.
Which monster girl species come from Japan?
Kitsune, oni, jorogumo and yuki-onna come from Japanese folklore. Kitsune are fox spirits, oni are horned ogres, jorogumo are spider spirits and yuki-onna are snow women. Many modern monster girl designs borrow from these yokai traditions.
Which monster girl species come from Greek myth?
Lamia, harpy, siren, gorgon, centaur, dryad, empusa, sphinx and minotaur come from Greek myth. Arachne is Greek too, though best known from the Roman poet Ovid. These are the oldest, most documented monster girl types.
Which monster girl types are not mythological?
Slime girls, moth girls and eldritch tentacle lovers are modern. Slimes came from role-playing games, moth girls from fan art and eldritch lovers from horror fiction. They are valid fantasy types, but they do not come from ancient folklore.
What is the best monster girl species to start with?
A succubus or kitsune is the easiest start, because both talk, tease and bargain. Start Here gives you five different types in five nights, which makes comparing them simple.
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