Classification: Titanic Subworld Worm
Description: The Cthonians are an ancient race of immense tentacled worms. If that wasn't bad enough, they also boast telepathic powers and cause earthquakes. Oh yeah, and they want to wipe out humanity. Great. While highly resistant to heat and pressure in the inner Earth, the Cthonians can't handle water. Rumor has it they serve an even greater and older member of their kind known only as Shudde M'ell.