A Tentacled Horror is roughly 50 feet in diameter and is composed of hundreds of thick wriggling tentacles. It has no discernible body beyond the mass of pseudopods and moves by undulating across the ground. It speaks no languages.

A tentacled horror lacks subtlety in combat, simply moving in and flailing away with its numerous tentacles. A successful hit with three or more tentacles indicates a crush attack for an additional 3d6 points of damage. Those who witness a tentacle horror for the first time must save vs. Spells or flee in stark terror for 1d20 rounds.