Dungeon Eater

Information
Dungeon Eaters are monsters made by artificial means. It is a bug that eats the dungeon itself, making the Dungeon Core sick, incapable of doing anything against it. After one day in The Cave of Greed, it has grown so significantly, that it looked like a black snake without a "face". The Dungeon Eater is capable of using the Dungeon's Services like summoning, and wall building. If a Soldier of God kills this monster while it contains the power of a Dungeon Core, it is the same as destroying a Core. They gain ultra skills.

Appearance
Black worm-like bugs about the size of a pointer finger, wriggling around. They were so black it felt as if they were concentrations of pure darkness. Their front tips rounded out into mouths. The inside of their mouths were red like blood and dotted with a circle of sharp white teeth resembling an inward saw blade.