35 creatures

Name ▲ CR Alignment Size Environment Description
Amoeba, Giant 1 N Small any land or underground This blob of protoplasm is somewhat transparent, allowing the bones of undigested meals and a...
Amoeba Swarm 1 N Fine any land or underground Thousands of tiny gelatinous clots of animate ooze swarm in a wet mound, surrounded by a cloying...
Animate Hair 1/2 NE Tiny any urban What looks like a pile of shorn hair twitches almost imperceptibly, as if the locks were moving...
Apallie 2 N Small any temperate This small, green ooze shifts form constantly, often taking on a two-legged, vaguely humanoid appearance.
Black Pudding 7 N Huge any underground
Boilborn 1 N Tiny any Like some taut pustule ready to burst, this mobile wound scuttles on a bristle of slick hairs.
Brain Ooze 7 NE Tiny any ruins or underground Two slimy tentacles protrude from the sides of this brain-shaped mass of quivering ooze.
Carnivorous Blob 13 N Colossal any Rolling and twitching like a massive wad of translucent ooze, this crimson blob reaches out...
Carnivorous Crystal 11 N Medium any underground (Plane of Earth) The facets of this crystalline formation shift and vibrate, as though in anticipation.
Colour Out of Space 10 CN Huge any An eerie radiance, a glow unlike anything else, fills the area, bringing with it a stifling...
Deathtrap Ooze 8 N Large any underground The killing blade of this horrific trap drips with an animated sheen of foul brown-orange slime.
Doppeldrek 5 N Medium any (Astral Plane) The half-formed shape a snarling dog rises out of this pile of grayish foam.
Emotion Ooze 6 N Medium any This viscous blob of brightly colored goo quivers and pulses in a curious manner.
Freezing Flow 4 N Large any cold This transparent blue formation of ice is as forbidding as the serpent it resembles.
Garden Ooze 2 N Small temperate forests, marshes, and urban What seems to be a mass of diseased fibers growing on a plant suddenly moves and slithers...
Gelatinous Cube 3 N Large any underground
Globster 5 N Large any oceans or coastlines This grotesque mass of blubber and rancid flesh piles up hideously upon itself, opening a vast...
Gray Ooze 4 N Medium cold marshes and underground
Gunpowder Ooze 14 N Large any land This lurching mass of slime and gunpowder leaves a trail of shiny black residue in its wake, and...
Hag Eye Ooze 3 N Small temperate marshes or underground A single eye stares unblinking from an amorphous blob. A transparent pseudopod extends from the mass.
Hungry Flesh 3 N Large any land or underground A quivering pile of tumorous flesh, this creature leaves a trail of slime as it hungrily...
Hungry Fog 6 N Huge any temperate Horrid shapes form within this cloying green mist, which pulses sporadically and with seeming voracity.
Immortal Ichor 17 NE Medium any ruins or underground This strange—almost beautiful—purple ooze thrums with powerful energy and glows with an eerie light.
Living Mirage 9 N Gargantuan any deserts or oceans A glimmering vision shimmers on the horizon, the very air coalescing into an oasis that may or...
Magma Ooze 7 N Large any volcano or underground This seething mass of bubbling molten rock churns and moves of its own hungry accord.
Ochre Jelly 5 N Large temperate underground or marshes
Plasma Ooze 16 N Gargantuan any This amorphous blob of violet energy ripples like a globe of floating liquid. It periodically...
Putrid Ooze 11 N Huge any Masses of carrion and debris break the inky surface of this enormous, undulating sludge.
Riftcreeper 15 CE Gargantuan any mountains (Abyss) This slithering mass of bubbling red ooze extrudes a nest of long, thin tendrils, as if tasting...
Roiling Oil 6 N Large any underground This viscous heap slides like an inky spill. It’s the color of a starless night sky, and a thick...
Shard Slag 8 N Huge any volcanoes or underground This smoldering mass of metal-encrusted goo sports half a dozen pseudopods, each tipped with a...
Shoggoth 19 CN Huge cold aquatic or underground
Slime Mold 2 N Large temperate forests What at first seemed to be a carpet of fungi and mushrooms suddenly stirs to life, surging...
Slithering Tracker 4 N Small any ruins or underground A long, moist streak along the dark stone suddenly undulates like a serpent and then rises up to attack.
Tyrant Jelly 9 N Large any underground This amber-colored ooze contains the preserved larva of a giant insect, almost like a monstrous brain.