Berussca

The adder Berussca lived in Brockhall with her three children, Zassaliss, Harssacss, and Sesstra. When King Sarengo of Riftguard attacked Brockhall with his Ratguard troops, Berussca and her children killed all but six of the rats. Sarengo broke Berussca's spine, but she poisoned him.

Books
Berussca was mentioned in Triss.