Kubups are brightly-colored arboreal creatures that can jump up to 100 feet high. They are an important part of forest ecosystems, as they feed on dead tree leaves and recycle them into nutrients for the trees. They typically climb to the very top of trees and sleep there, clinging to the leaves by their sharp teeth, but during stormy weather, they can sometimes be found hiding under rocks or in caves.

Their fur, when rubbed on a person's skin, will cause that person to turn into a dornax if the kubup was faizen. The effects of this process are irreversible except by highly skilled magicians.