Failed attempts to experiment with magic often result in transforming dragons into these hellish creatures. They are extremely dangerous, and will mindlessly kill any living creature without regard to friend or foe.

Dragons are highly-intelligent reptilian creatures that—from a human perspective, at least—appear to live forever. Many different varieties of dragon exist, each with their own unique qualities, habitats, and behavior. Adolescence in dragons is usually marked by the growth of a hatchling’s wings, although not all breeds of dragons grow wings and some breeds have other traits that indicate the beginning of maturation. In Galsreim, dragons and humans coexist peacefully.

Zmobie's home is a "Cyrpt" (that is what she has carved into a stone plate above the entrance, anyway) which she has built with her own claws despite her decrepitude. In there, she is waiting. For what or who, nobody knows -- she probably does not know either.

Sometimes, she is visited by daring young dragons who figured out how they can appease this undead:

Zmobie loves cranberries.