NPC: A digger slug
Long Desc: A large slug intent on digging is here.

A massive beast bred intentionally for its ability to dig deeper, faster,
and better than normal men.  They are quite a stupid race, mental ability
not being a needed skill for digging in deep, dark, sometimes inhospitable
areas.  The digger slug seems intent on digging, and doesn't even notice
your presence.  Dont stand too close however, as acid seems to ooze from his
pores.
It is a unique approximately 4'9" tall.

This NPC can be found in: Irda Isle Caverns.
  …in A Slime Covered Cell.
*This NPC is stationary.
This NPC is immune to: acid earth
This NPC is resistant to: silver pierce