Osmosians are Morveth-born ooze dark matter whose bodies never fully settled into flesh. They are living masses of mutable matter, stolen memory, and shadowed instinct, able to absorb the properties of materials, energy, and living creatures. Most hold a humanoid shape out of habit rather than biology, their forms constantly shifting beneath the surface like ink beneath glass.
Origins
Legends say the first Osmosians were born in the deep places beneath the world, where ancient alchemy, dead magic, and forgotten flesh pooled together in darkness. Some believe they were created when Morveth scholars attempted to distill identity itself into liquid form, only for the experiment to awaken and crawl away with its makers' memories. Others claim they are descended from ancient oozes that fed upon the remains of fallen gods, absorbing enough thought, language, and longing to become people.
Among Morveth, another story is whispered: that Osmosians came from the spaces between bodies. Blood, shadow, hunger, spell residue, shed skin, grave water, and old fear gathered in the cracks of reality until something looked back. However they began, Osmosians have always embodied a disturbing truth. Flesh is not fixed. Identity can be borrowed. Strength can be stolen. Even the self can dissolve and return changed.
Appearance
Osmosians usually appear as slender humanoids made of dark, translucent gel, living ink, violet-black slime, smoky glass, or glossy shadow. Their bodies may hold a face, limbs, hair-like shapes, and recognizable features, but these details are choices rather than necessities. When relaxed, their edges soften, drip, ripple, or blur. When threatened, their bodies harden, sharpen, or thicken as they absorb nearby matter.
Their eyes are often the most stable part of them, glowing in pale violet, blue-white, silver, green, or cold amber. Some Osmosians maintain elegant humanoid features, while others appear unsettlingly unfinished, with smooth faces, liquid hands, or voices that sound as though they are speaking through water. After absorbing a material, parts of their body may resemble living steel, bark, stone, bone, glass, or crystal before slowly melting back into their natural form.
Culture
Osmosian culture is quiet, secretive, and deeply personal. They do not define family by blood, since blood is only one substance among many. Instead, they form small groups called Pools, bound by shared memories, survival oaths, or the places where they first learned to hold a stable shape. A Pool may be a hidden household, a Morveth laboratory, a cavern commune, or a wandering band that travels under false names.
Many Osmosians fear losing themselves. Their ability to absorb matter, energy, and living patterns gives them power, but every borrowed property leaves an echo. A warrior's rage, a beast's hunger, a monster's instinct, or the cold patience of stone can linger after the transformation ends. Because of this, Osmosians value rituals of self-remembrance: names spoken at dawn, personal tokens sealed in glass, memory chants, and mirrors used not for vanity, but for proof.
Their greatest cultural rite is the First Shape. A young Osmosian is asked to hold a chosen form for a full day without dissolving, mimicking another, or absorbing outside matter. The rite is not about discipline alone. It is a declaration that the Osmosian is not merely what they consume. They are a person who chooses what remains.
Traits
Osmosians possess mutable bodies capable of absorbing and imitating the physical properties of the world around them. By touching stone, wood, metal, bone, glass, or other materials, they can briefly alter their own substance, becoming harder, heavier, sharper, smoother, or more resilient. This makes them difficult to pin down and even harder to predict.
They can also drain and redirect energy, pulling heat from flame, charge from unstable devices, or force from magical attacks. Their most feared gift is biological assimilation. By coming into contact with a creature, an Osmosian can briefly echo one of its physical or supernatural traits. This does not make them a perfect copy. It gives them a stolen fragment: a resistance, a sense, a claw, a movement, a defensive instinct, or a monstrous survival mechanism.
Among Morveth, Osmosians are valued as infiltrators, survivors, scouts, and living containment vessels. They are also watched carefully. A person who can become almost anything must fight harder than most to remain themselves.
Lifespan and Vitality
Osmosian lifespans are difficult to measure. Some live only a few decades before dissolving into mindless matter. Others persist for centuries, constantly renewing themselves through absorbed material and stolen energy. Their bodies do not age in the ordinary sense. Instead, they become more complex, darker, denser, and more difficult to read.
Their vitality depends on stability. An Osmosian who absorbs too much too quickly may become unstable, their body flickering between substances, voices, and instincts. One who refuses to absorb at all may grow thin, brittle, and translucent. Healthy Osmosians learn balance, taking only what they can release.
When an Osmosian dies, their body collapses into inert fluid, ash-dark residue, or glassy sludge. Some Pools preserve a drop of the fallen in sealed vessels, believing a fragment of memory remains within the matter.
Environmental Preferences
Osmosians thrive in dark, damp, unstable, or magically saturated places: abandoned laboratories, deep caverns, ruined cities, flooded crypts, shadowed tunnels, and Morveth enclaves built near strange sources of power. They prefer places with many materials to touch and many paths of escape.
They can survive in most environments, but extreme dryness, intense sunlight, and sterile surroundings make them uncomfortable. Too long in such places and their bodies become tacky, sluggish, or painfully rigid. They are most at home where the world is not quite finished becoming itself.
Common Reasons To Adventure
Osmosians adventure for survival, discovery, identity, and hunger. Some seek rare materials or powerful creatures to absorb, hoping to strengthen their bodies or unlock forgotten potential. Others are fleeing Morveth experiments, hostile alchemists, or former Pools that tried to decide their shape for them.
Many adventure to understand personhood. If they can imitate stone, beast, monster, and magic, what part of them is truly their own? Others are drawn to danger because battle reveals useful patterns. A creature must show its nature under pressure, and Osmosians are very good at stealing what pressure reveals.
Example Names
Osmosian names often evoke fluidity, darkness, reflection, and unstable identity. Examples include: Vel, Oryn, Sable, Mirr, Vosha, Nhal, Sevrin, Dripha, Mol, Veyth, Ixon, Nym, Calyx, and Ossa.
Typical Alignments
Most Osmosians lean toward neutral alignments, shaped by survival, secrecy, and the constant challenge of self-definition. Some become neutral good, using their strange gifts to protect others from monsters, tyrants, and experiments like the ones that may have created them. Others become true neutral, caring less about morality than continuity, memory, and the right to exist.
Evil Osmosians are deeply feared. They may treat other creatures as collections of useful traits rather than people, consuming identity, power, and memory without remorse. Among their own kind, the greatest taboo is not killing. It is taking so much from another being that nothing meaningful remains.
Relations with the Great Factions
Caerwyn
- The nature-bound faction views Osmosians with caution. Caerwyn respects adaptation, but Osmosian absorption feels unnatural to many druids, especially when it mimics living creatures. Osmosians answer that nature consumes, changes, and repurposes everything. They simply do it faster.
Nythera
- The arcane-industrial faction is fascinated by Osmosian matter absorption and would gladly study them as living transmutation engines. Osmosians distrust Nytheran curiosity, knowing that a scholar who asks how their body works may soon ask how to take it apart.
Varkesh
- The militaristic empire sees Osmosians as infiltrators, assassins, and battlefield assets. Their ability to adapt to armor, weapons, monsters, and hostile environments makes them valuable, but Varkesh command structures struggle to trust soldiers who can change shape, substance, and loyalty under pressure.
Silcan
- The festival faction finds Osmosians tragic, beautiful, and unnerving. Some Silcan artists celebrate their shifting forms through dance, maskwork, and living sculpture. Osmosians may enjoy the acceptance, but often dislike being treated as spectacle rather than person.
Brinari
- The Brinari understand fluidity better than most and often treat Osmosians with practical respect. A ship has room for strange bodies if they pull their weight. Still, Brinari crews value trust above all, and an Osmosian must prove that their changing form does not mean a changing oath.
Morveth
- Among Morveth, Osmosians are both kin and warning. They embody the faction's fascination with the unknown, the unstable, and the self beyond ordinary limits. Some Morveth enclaves welcome them as sacred mutations. Others treat them as experiments that escaped the table. Osmosians know Morveth better than most: it offers shelter, knowledge, and darkness, but never without a cost.
