All Monsters (3)

• Ankheg - Gigantic burrowing arthropods with chitinous shells that can subsist on filtered earth or meat
  OSRIC
• Badger - Swift-moving burrowers that defend their territory and mate for life
  OSRIC
• Purple Worm - Gigantic subterranean monsters with poisonous stingers
  BFRPG, OSE, OSRIC