An all purpose category for creatures that don't belong to any natural ecosystem, even on another Plane.
- Bizarre Alien Biology: Integral. They're resistant or immune to critical hits because their forms are so alien attackers don't know what to aim for.
- Bizarre Alien Psychology: Almost of them have very strange and hostile attitudes.
- No-Sell: They are all immune to acid, for some reason.
- Spawn Broodling: Akatas reproduce by implanting their parasitoid larvae in humanoid creatures, eventually transforming them into void zombies, mindless hosts for the larvae until they grow up.
- Abusive Precursors: They didn't hesitate to try to wipe out a species for disobeying them.
- Animalistic Abomination: They look like big, tentacled fish. They are also an entire species of borderline-incomprehensible Eldritch Abominations.
- Even Evil Has Standards: According to the second dictum of the alghollthu people, an alghollthu is to control and they do not tolerate slavery of their own kind. Members of the Fifth Dictum, a group of veiled masters that secretly bred a race of alghollthu slaves known as enisysians, rightfully fear that if their existence is revealed, their kind would quickly turn against them.
- Eviler Than Thou: The aboleths showed the serpentfolk exactly what they thought of upstarts like them.
- Genetic Memory: They possess one that stretches back farther than even the gods can comprehend.
- Hoist by His Own Petard: The Earthfall turned out to be much more devastating than they expected, and ended up wrecking their empire along with the Azlanti's.
- Mind Rape: ''Do not'' let them capture you alive.
- Organic Technology: They can mutate just about any lifeform to suit their needs.
- Underwater City: Aboleths dwell in grotesque cities in the depths of the sea.
- Where I Was Born and Razed: The algollthu fled and destroyed their own homeworld when their slave races rebelled against them.
- Slave Race: Enisysians have been bred to be subservient to their masters for thousands of years.
- Dumb Muscle: The plizeazoth is a strong and brutish alghollthu subspecies that rely more on their primal instincts than intelligence.
- Extra Eyes: A plizeazoth has five ruby-red eyes, each capable of moving on its own.
- Henchmen Race: Many plizeazoths do not comprehend the true power they have, long ago bred into a life of subservience to the veiled masters.
- Laser-Guided Amnesia: Even their victims recall only their pain and suffering, with at best foggy recollections of their tormentors; the emotional and psychic scars left on their minds scour away all memory of the plizeazoths.
- Torture Technician: The first plizeazoths were bred for the purpose of dealing pain to humanoid victims. They are skilled at using emotion, hallucination, and pain to their advantage.
- Demonic Possession: Omnipaths can possess their victims and ride within them to watch the surface world.
- Knowledge Broker: Omnipaths serve as information hubs between the alghollthu. Using their special ability to establish a network of minds throughout the Darklands and oceans, omnipaths allow other alghollthu and their mind slaves to orchestrate their nefarious plans.
- Nested Mouths: An omnipath has three teeth-filled jaws nestled within each other.
- Photographic Memory: Omnipaths possess a keen intellect and recall everything they (and those within the mesh) experience.
- Psychic Link: Omnipaths can establish a network of minds and communicate with all creatures in its telepathic mesh simultaneously. An omnipath can use the senses of all creatures within its mesh, and any creature that would harm one of the creatures in the mesh immediately becomes known to all other beings the omnipath is mentally linked to.
- Psychic Powers: Omnipaths' primary powers are in their minds, and they pursue psychic magic.
- Adaptive Ability: Brethedans can adapt their bodies at will, gaining more powerful options as they mature.
- Fusion Dance: They can combine into larger beings that have their own intelligence. Brethedan corporations can be made of hundreds of smaller barathu.
- Living Gasbag: They vaguely resemble something like a giant jellyfish or sea squirt, with no discernible external features save for long, trailing tentacles and filled for the most part with lighter-than gases that allow them to float through the endless skies of their gas giant homeworld.
- Named After Their Planet: While their race is properly named 'barathu', no one on Golarion actually knows that name and in all Pathfinder material they're simply called Brethedans after their homeworld of Bretheda.
- Starfish Aliens: They look like floating, translucent masses of gelatin, with clusters of tentacles trailing from their undersides. They are adapted for living in the endless skies of the gas giant Bretheda, and can modify their own genetic code to suit their needs and join together in large numbers to form enormous, hyper-intelligent shared consciousness.
- Armor-Piercing Attack: A charybdis' claws are particularly devastating when used against objects, and ignore the first 10 points of an objectís hardness rating.
- Lamprey Mouth: A charybdis' mouth is seemingly jawless, with teeth arranged in a circle around the maw.
- Mega Maelstrom: A charybdis can generate a 6-foot-across, 120-foot-deep whirlpool.
- Make Me Wanna Shout: Cloakers have the ability to emit an infrasonic moan which unnerves anything that hears it.
- Big Eater: The decapus has an enormous appetite that often drives it to consume whatever food is available.
- Everything's Squishier with Cephalopods: The decapus was named by how it resembles an octopus with 10 instead of 8 tentacles.
- I'm a Humanitarian: The decapus is not above cannibalism when other food sources are scarce.
- Offing the Offspring: Male decapodes typically eat their own children if these are not guarded by the female.
- To Serve Man: The decapus favors humanoid flesh over all other food.
- The Blank: In its natural form, a faceless stalker has no discernible facial features.
Drow that have been magically fused with spiders through the process of drow fleshwarping.
- Bizarre Sexual Dimorphism: Female driders' upper bodies look just like their drow bodies, and their lower bodies resemble black widows and other slender spiders. Males, however... their upper bodies are mostly normal, except for their faces — they have mandibles instead of mouths. Males' lower bodies also resemble bulkier, hairier tarantulas.
- Cursed with Awesome: If they can escape their drow masters and claim their freedom, they get to enjoy an impressively powerful body.
- Our Centaurs Are Different: A spider's lower body and a dark elf's torso and head (with the head having strongly arachnid features in the males).
- Spider People: Females are a fairly standard take on this trope, being centaurine beings with a humanoid drow body above a spider's lower body. Males are spiderlike in their upper bodies too, however: their faces are distinctly arachnoid, with spider mandibles and multiple eyes. They're also an artificial race made by fusing a drow and a spider, although unlike other fleshwarps they can breed true, and have established self-sustaining populations in the Darklands.
- Super Human Trafficking: Many driders are created from drow as a punishment — earned or not, drow being drow — and promptly enslaved.
Noble and kind messengers from the depths of space, the Flumphs risk everything to ensure that other races across the universe understand the threat of the Dominion of the Black and are prepared to fight it.
- The Cassandra: Their peculiar appearance and origins make their quest considerably more difficult.
- Creepy Good: They are aberrations from the most distant reaches of space — something that in Pathfinder breeds little but mind-breaking horrors — who resemble acid-dripping flying jellyfish... and are also Always Lawful Good, genuinely helpful beings who want nothing but the best for regular, planet-bound people.
- The Ageless: These creatures seem to have no maximum lifespan.
- Alien Blood: Flyping polyp blood behaves more like strange vortices of wind. When wounded, its flesh does not bleed so much as whistle and gust.
- Batman Can Breathe in Space: Some flying polyps can travel to other planets by bringing with them a sizable sphere of purloined wind to carry them aloft and sustain them.
- Blow You Away: A flying polyp can send an eerie wind out to slow and eventually stop a creature's escape, or surround itself with blasts of precisely aimed gusts.
- Final Solution: Flying polyps excel at genocide, using their mastery over wind to scour clean entire cities and civilizations when they come upon them.
- Giant Flyer: A typical flying polyp measures 30 feet in length.
- Invisibility Flicker: A flying polyp's body constantly flickers and shifts, passing from visibility to invisibility in a seemingly random pattern and often not wholly at once.
- Too Many Mouths: A flying polyp is a nauseating mass of flesh, eyes, tentacles, and mouths.
- You Will Not Evade Me: The flying polyp's sucking wind creates a peculiar sucking sensation as if it were attempting to pull creatures back toward the flying polyp.
- The Blank: A hundun's robe-like skin obscures its face in darkness.
- Counter Attack: Any creature that attempts to affect a hundun with a mind-affecting effect will suffer negative levels from entropic feedback.
- Eldritch Abomination: Hunduns are given life by the powers of alien gods in the nightmare dimensions of unreality beyond space and time. They embody aspects of the formless void that preceded the creation of the multiverse and reality accommodates their individual existences as intractable errors that must be continually accounted for yet can never fully be corrected.
- Evil Counterpart: Like the proteans, hunduns are tireless foes of archons, asuras, axiomites, devils, inevitables, kytons, and other exemplars of law, relish confusion and disorder, and oppose any effort to impose or maintain discipline, structure or regulation. However, hunduns have nothing but contempt for proteans, their strange religion, and the spontaneous, ephemeral acts of creation in which proteans delight; instead, they seek to spread the freedom and truth of pure entropy to all creation.
- In the Hood: Hunduns appear as gigantic humanoids with faces hidden by voluminous, hooded robes.
- No Face Under the Mask: Their robes are made from the folds of their own skin, and their staves, known as strange attractors, are also part of their body.
- Omnicidal Maniac: Hunduns are the incarnation of the desire to reduce the multiverse to a space filled with nothing but randomly fluctuating energy fields and gravitic curvatures.
- More Deadly Than the Male: The females of this species have one more CR than the males.
- Chest Monster: Their most classic form.
- Reptiles Are Abhorrent: Averted more than not. Dark and Spirit Nagas play this straight, while Lunar, Royal, Water and especially Guardian Nagas avert it completely.
- Snake People: To various degrees. The most anthropomorphic lunar naga has a whole human head, neck and shoulders on a snake's body, while the royal naga only has human-like faces on snake heads.
One of the most prominent representatives of the collective of alien, flesh molded species known as the Dominion of the Black, brain collectors, known more properly as the neh-thalggu, are living supercomputers who, as their common name suggests, harvest the brains of sentient beings to augment their own.
- Alien Invasion: Not yet, but ones encountered on Golarion are agents of the Dominion prepping for a possible one if that becomes necessary.
- And I Must Scream: The brains are still conscious and think independently. The collectors don't care.
- Evil vs. Evil: The Dominion does not like the Great Old Ones.
- Giant Enemy Crab: They look like giant, oblong crab... things.
- Omnicidal Maniac: As far as anyone can tell, the Dominion views the concept of annihilation as a sacred process, returning all that is to the Dark Tapestry (read here: empty space).
- Organic Technology: They are this, and the Dominion in general is fond of it; it's unclear if there's even a difference between their tech and themselves. The neh-thalggu are masters of it.
- Took a Level in Badass: A sufficiently old brain collector who's absorbed enough thoughts will metamorphosize into a scorpion-like creature called a yah-thelgaad, who exchange one of their seven brain containers for even greater intelligence, a larger and better set of attacks, and the power to control disease.
- Mix-and-Match Critters: A reefclaw resembles a lobster in the front and an eel in the back.
- Evil Smells Bad: Spawn of Yog-Sothoth exude a hideous, unforgettable stench that alerts others to their presence.
- Evil Sorcerer: The humanoid spawn of Yog-Sothoth typically take levels in spellcasting classes, usually sorcerer or oracle.
- Human Mom Nonhuman Dad: A humanoid mother and an Outer God father.
- Humanoid Abomination: The less monstrous spawn of Yog-Sothoth remain roughly humanoid in shape and size, although their deformities still require them to wear disguises or layers of baggy clothing.
- Hybrid Monster: Spawn of Yog-Sothoth are created by impregnating a humanoid creature with Yog-Sothoth's essence.
- Invisible Monsters: Spawn of Yog-Sothoth are naturally invisible.
- No Body Left Behind: Upon death, a spawn's flesh rapidly melts until nothing remains but a crusty stain.
- Public-Domain Character: They're lifted wholesale from Wilbur Whateley and his brother in The Dunwich Horror.
- Apocalypse Cult: Star-spawn seed the creation of such cults that prepare the world and bring it to the brink of destruction.
- Batman Can Breathe in Space: Star-spawn don't need to breathe and can survive indefinitely in space.
- Cthulhumanoid: Being quite obviously based on the Trope Namer, star-spawn have a humanoid body and a face full of tentacles.
- Evil Is Not a Toy: The only reward for the Apocalypse Cults that aid the star-spawn is being among the final few to be eradicated, for the star-spawn have no interest in and feel no responsibility toward their pawns.
- Omnicidal Maniac: Star-spawn wish to wipe planets clean of indigenous life.
- Nightmare Sequence: Star-spawn can influence victims via dreams and nightmares, seeding the growth of destructive cults and societies.
- Winged Humanoid: Scaly, membranous wings on a mockery of human shape.
- Public-Domain Character: Their source is the novella The Shadow Out of Time, which has entered public domain.
- Starfish Aliens: Yithians have a slug-like cone-shaped body, with four tentacles emerging from the top, two of which end in pincers, one which ends in four, red trumpet-shaped tubes, and one that ends in a spherical head with three eyes, ears mounted on stalks and small tendrils hanging from the underside.