All Monsters (38)

• Bee, Giant - Giant bees that live in underground hives with a queen
  BFRPG
• Behir - A particularly nasty subterranean beast with a crocodile's head on a 40-ft long snake-like body with twelve sets of legs
  OSRIC
• Black Pudding - Amorphous creature that lives only to eat, scouring underground areas for organic matter
  BFRPG, OSE
• Blindheim - Yellowish, frog-like humanoids that project twin beams of incredibly bright light from their eyes
  OSRIC
• Caecilia, Giant - Carnivorous, legless amphibians that resemble giant earthworms with bony skeletons and sharp teeth
  BFRPG
• Carcass Creeper - A fearsome, subterranean omnivore described as the magical hybrid of a cutworm and a squid
  OSRIC
• Cave Lizard - Lizards that dwell in underground settings with camouflage colouration
  OSRIC
• Cave Locust, Giant - Pale, cricket-like creatures that live underground, 2 to 4 feet long
  BFRPG
• Dark Creeper - Short, spindly humanoids with pale skin who wrap themselves in loose, dark clothing
  OSRIC
• Dark Stalker - Leaders of the dark creepers, much taller than their followers
  OSRIC
• Dwarf - Short, stocky, bearded demihumans who dwell in mountains and subterranean realms
  OSE, OSRIC
• Ettin - Large, nocturnal two-headed creatures that live below ground
  OSRIC
• Fire Beetle - 2½' long. Commonly found underground
  OSE
• Gelatinous Cube - Nearly transparent cube that travels dungeon corridors absorbing carrion, creatures, and trash
  BFRPG, OSE, OSRIC
• Giant Shrew - Brown-furred, mole-like, insectivores with long snouts. Dwell underground; skilled burrowers.
  OSE
• Giant Slug - Large boneless creatures that spit acid and burrow through wood and earth
  OSRIC
• Giant Weasel - 8' to 9' long, vicious, predatory mammals with rich fur of brown, gold, or white
  OSE
• Gnome - Small humanoids standing 3 to 3½ feet tall with tan to woody brown skin
  BFRPG, OSE, OSRIC
• Goblin - Small, wicked humanoids that favor ambushes, overwhelming odds, and dirty tricks
  BFRPG, OSE, OSRIC
• Grimlock - Fierce blind humanoids with scaly grey hide that dwell in dark places and hunt humans
  OSRIC
• Jelly, Gray - Amorphous creatures that live only to eat, scouring underground areas
  BFRPG
• Kobold - Small, dog-faced reptilian humanoids
  BFRPG, OSE, OSRIC
• Lurker - Dangerous creatures resembling manta rays that wait in high places to drop on prey
  OSRIC
• Oil Beetle - 3' long, burrowing beetles sometimes encountered below ground
  OSE
• Orc - Grotesque humanoids bent on war and domination
  BFRPG, OSE, OSRIC
• Otyugh - Repulsive beasts that feed off refuse and waste, dwelling in rubbish pits and cisterns
  OSRIC
• Purple Worm - Gigantic subterranean monsters with poisonous stingers
  BFRPG, OSE, OSRIC
• Quartz Roper - Rocky creature with living quartz hide that appears as a brownish or smoky grey crystalline statue
  OSRIC
• Rhagodessa, Giant - Spider-scorpion creature with sticky pedipalps for capturing prey
  BFRPG
• Rock Cricket - 2–3' long, herbivorous, giant crickets that dwell in caverns
  OSE
• Roper - Cavern-dwelling monsters that mimic stalagmites with grey-green stony hide
  OSRIC
• Rust Monster - Strange monster built like a huge turtle with insectoid head and feather-like antennae
  BFRPG, OSE, OSRIC
• Scorpion, Giant - Giant scorpions are aggressive predators, sometimes as large as a donkey
  BFRPG, OSRIC
• Shrieker - Large, semi-mobile fungus that wails loudly when approached or threatened
  BFRPG, OSE, OSRIC
• Spirit Naga - Evil naga with black scales and blood red bands, large misshapen human-like head
  OSRIC
• Trapper - Underground predators with flat, chameleon-like bodies that lie in wait on dungeon floors
  OSRIC
• Troglodyte - Intelligent, reptilian humanoids with agile hands, long legs, short tails, and spiky combs on their heads and arms
  OSE, OSRIC
• Vilstrak - Rocky-skinned subterranean humanoids that merge with stone
  OSRIC