The Gloomer

The Gloomer was an enormous, frightening, mindless black water rat that lived in the underground lake of Kotir and was controlled by Tsarmina and her army. Her father, Verdauga, captured and imprisoned it long ago. It was used as a sort of attack animal to fight enemies of the wildcat, and met its demise upon battling the vicious Stormfin, an enormous pike, in River Moss.

The Gloomer had very poor sight and hearing, but enhanced smell. It did not exhibit self-consciousness and was veritably insane.

Books
The Gloomer appears in Mossflower.