Gelatinous Cubes

The Gelatinous Cube tirelessly scours the dungeons seeking out sustenance. They are nearly impossible to see, but are often given away by the remains floating in their transparent bodies. Gelatinous cubes will eat and absorb anything - including all types of armor worn by unlucky adventurers.

They could usually be found in the deeper dungeons of Sosaria during the time of Mondain in Ultima I, but disappeared in the cataclysm following his destruction.