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Terrain: Underground
Climate
Movement: Climb
52 creatures
| Name ▲ | CR | Type | Alignment | Size | Description |
|---|---|---|---|---|---|
| Adherer | 3 | monstrous humanoid | LE | Medium | This pallid humanoid creature is wrapped in wispy strips of skin, with bits of detritus and a... |
| Akaname | 1 | aberration | N | Small | This short, spindly creature has warty, brown-red skin and large black eyes. Its long, muscular... |
| Albino Cave Solifugid | 4 | vermin | N | Medium | |
| Amoeba, Giant | 1 | ooze | N | Small | This blob of protoplasm is somewhat transparent, allowing the bones of undigested meals and a... |
| Amoeba Swarm | 1 | ooze | N | Fine | Thousands of tiny gelatinous clots of animate ooze swarm in a wet mound, surrounded by a cloying... |
| Amphisbaena | 4 | magical beast | N | Large | This large snake has two heads, one at each end of its long, coiling body. Both display large... |
| Ancient Crystal Dragon | 15 | dragon | CG | Huge | |
| Azruverda | 13 | aberration | CG | Huge | A humanoid head peers forth from this enormous creature’s beautifully iridescent, spike-covered... |
| Black Pudding | 7 | ooze | N | Huge | |
| Blindheim | 2 | magical beast | N | Small | The size of a short, stocky humanoid with webbed feet and claws, this frog-like creature has... |
| Carnivorous Crystal | 11 | ooze | N | Medium | The facets of this crystalline formation shift and vibrate, as though in anticipation. |
| Cave Fisher | 2 | vermin | N | Medium | |
| Cave Scorpion | 1 | vermin | N | Medium | |
| Centipede Swarm | 4 | vermin | N | Diminutive | |
| Choker | 2 | aberration | CE | Small | |
| Cytillipede | 6 | magical beast | N | Large | This segmented creature has a chitinous body covered in patches of glowing, purple fungus.... |
| Deathtrap Ooze | 8 | ooze | N | Large | The killing blade of this horrific trap drips with an animated sheen of foul brown-orange slime. |
| Decapus | 4 | aberration | CE | Medium | This swollen cephalopod has ten writhing tentacles and a hideously monstrous face with pale,... |
| Dire Corby | 1 | monstrous humanoid | NE | Medium | This creature looks like a humanoid crow with oily black feathers, glittering eyes, and a sharp beak. |
| Drider | 7 | aberration | CE | Large | |
| Executioner’s Hood | 2 | aberration | N | Tiny | |
| Flail Snail | 4 | magical beast | N | Large | This enormous snail has a brightly colored shell and four tentacles on its head, each tipped... |
| Fungal Crawler | 3 | aberration | N | Small | This giant fanged cricket is caked in pungent fungal growths and topped with a mushroom-like cap. |
| Ghorazagh | 13 | aberration | NE | Large | With an armored spherical body, numerous tentacular legs, and a multi-eyed visage, this... |
| Giant Centipede | 1/2 | vermin | N | Medium | |
| Giant Whiptail Centipede | 3 | vermin | N | Huge | |
| Grick | 3 | aberration | N | Medium | This pallid, slimy, worm-like creature is the size of a human, its mouth a sickening tangle of... |
| Gug | 10 | aberration | CE | Large | This towering menace has a horrible, vertically aligned mouth and arms that split at the elbows... |
| Hag Eye Ooze | 3 | ooze | N | Small | A single eye stares unblinking from an amorphous blob. A transparent pseudopod extends from the mass. |
| Hollow Serpent | 16 | undead | NE | Large | This creature looks like an oversized, empty snakeskin, its body covered in barbs and maw filled... |
| Lurker Above | 7 | aberration | N | Huge | |
| Magma Ooze | 7 | ooze | N | Large | This seething mass of bubbling molten rock churns and moves of its own hungry accord. |
| Mite | 1/4 | fey | LE | Small | |
| Morlock | 2 | monstrous humanoid | CE | Medium | |
| Nuglub | 2 | fey | CE | Small | |
| Ochre Jelly | 5 | ooze | N | Large | |
| Ogre Spider | 5 | vermin | N | Huge | |
| Phantom Fungus | 3 | plant | N | Medium | Portions of this three-stalked fungoid monster’s body seem to fade in and out of sight. A large... |
| Rat King | 5 | magical beast | N | Small | Squeaks and chittering cries rise from a tangle of diseased rats with their tails knotted together. |
| Roiling Oil | 6 | ooze | N | Large | This viscous heap slides like an inky spill. It’s the color of a starless night sky, and a thick... |
| Rust Monster | 3 | aberration | N | Medium | |
| Shoggoth | 19 | ooze | CN | Huge | |
| Slithering Tracker | 4 | ooze | N | Small | A long, moist streak along the dark stone suddenly undulates like a serpent and then rises up to attack. |
| Slurk | 2 | magical beast | N | Medium | This disgusting beast looks like a slime-covered toad, but with two walrus-like tusks jutting... |
| Tentamort | 4 | aberration | N | Medium | This dark blue creature has a conical body covered in angry red eyes and numerous tentacles, two... |
| Titan Centipede | 9 | vermin | N | Colossal | |
| Trapper | 8 | aberration | N | Huge | |
| Tsaalgrend | 2 | plant | N | Small | Strange, translucent gas bladders carry this tangle of thorny, purple vines and clumps of mold... |
| Tyrant Jelly | 9 | ooze | N | Large | This amber-colored ooze contains the preserved larva of a giant insect, almost like a monstrous brain. |
| Vemerak | 14 | aberration | CE | Huge | This huge monstrosity seems like some alien, clawed insect, with vaguely humanoid features and... |
| Vexgit | 1 | fey | LE | Tiny | |
| Xenopterid | 7 | vermin | N | Medium | What appears to be this creature’s cloak unfurls into bug wings, and its apparently human face... |