All Monsters (16)

• 16 HD Monsters in Basic Fantasy Field Guide Omnibus
  
• 16 HD Monsters in Basic Fantasy Role-Playing Game
  
• 16 HD Monsters in Old-School Essentials Advanced Fantasy Genre Rules
  
• 16 HD Monsters in OSRIC
  
• Aerial Servant - An invisible extra-dimensional creature summoned to acquire and transport objects or creatures
  Field Guide, OSRIC
• Albertosaurus - Much smaller cretaceous carnivore
  OSRIC
• Archaeopteryx - Jurassic carnivore; no bigger than an ordinary bird
  OSRIC
• Centrosaurus - Cretaceous herbivore that seems to have lived in very large herds
  OSRIC
• Elemental, Cold* - A crude, headless ice statue with long sharp icicles in place of hands
  BFRPG, Field Guide
• Elemental, Lightning - Dark clouds lit from within by flashes of lightning
  BFRPG, Field Guide
• Elemental, Wood - A large, leafless tree elemental
  BFRPG, Field Guide
• Frost Worm - A 40-foot long creature with huge mandibles that lurks under snow and generates intense cold
  Field Guide
• Giant, Mountain - Largest of all giants, living in clans that rule over mountain territories
  BFRPG
• Mosasaurus - Cretaceous carnivore that filled the same ecological niche as sharks
  OSRIC
• Multichromatic Dragon
  OSE-AF
• Ogre, Swamp - The largest and most bestial of ogres, semi-aquatic ambush predators that lie in wait for prey
  Field Guide