All living things are classified using a system that groups them by domain of origin:
- Demon – those banished to (or descended from those banished to) the First Hell by the All-Mother
- Divine – those that live within the Divine Space but not on one of worlds floating in it
- Fey – natives to the Fey Lands
- Fiend – natives to the Abode of Fiends
- Intruder – those from outside the Primal Realms, Divine Space, and Planes
- Natural – creatures native to the Living World
- Beast – creatures that are native to the Living World and lacking sentience.
- Monster – life that is native to the Living World but are either descended from or tightly connected to another domain.
- Mortal – creatures that are native to the Living World and that are sentient.
- Plant – vegetation native to the Living World
- Undead – life native to the Living World that does not have Life Essence intrinsically woven into its fabric
- Planar – natives of the various Planes
- Primal – natives of the Primal Realms
- Shade – natives of the Shadowscape
Demons, Fiends, and others from minor worlds within Divine Space are collectively known as Lessers.