Terrra-vermis

Appearance
Deep in the Underdark a giant worm works its way under mountain, hill, and lakes. This worm is dark in color blending into the earth and rocks. Pincers like fangs protrude from the ever-open mouth, as Terrra-Vermis hungers for everything. Be warry of the spikes, they are used for more than burrowing.

Personality
Always hungry. This Guardian spends its time roaming for food. It enjoys the occasional gem pile, small cow, field of crops, small herds, and hill giants.

Terrra-Vermis will ignore many simple things, anything it senses as food better get out of the way. The problem is nobody has ever figured out what things it considers food.

Background & Relationships
It is said that the first mountain was formed when Terra-Vermis pushed its way toward the surface from somewhere beneath the Underdark. Terra-Vermis has formed many of the hills and caves, it is even rumored it helped carve some river beds.

It is unknown how big Terrra-Vermis actually is as nobody has been around to see the end of its body after its head. It does have a beginning and end though that has been observed.

Terrra-Vermis enjoys spending its feasting moments under the mountains. There is dosn't have to worry about any of the other Guardians except Aquamentary.

Serving the goddess Lakulie, Terrra-Vermis enjoys making patterns that will shape mountains and underground passageways by collapsing them or raising them up.

Misc.
Is there something else you want to include that doesn't fit in any other category? Knock yourself out! Add more stuff as you see fit.