The Fundamental Realms are the bedrocks of constructive intent that make up the universe, and the constituent portions of the multiverse.
-- The Source : The heart of the omniverse, of all multiverses and universes. A font of endless power and potential.
-- Hyperspace : A realm of energy defined by eddies and currents in gravity and energetic forces.
-- Astral Plane : The source of gods, myths, and mortals. A place of inchoate possibility where thought and intent are the most potent of all forces.
-- Nullspace : Also known as the Negative Zone or the Dark Dimension. A pit of entropy shared by all universes, where matter and power go to disappear forever.
--The Bleed: Coagulated phlogestein that forms the barriers between the dimensions of the multiverse. Also known as the Microverse.
These Realms each share a unique p-brane frequency with each itinerant universe. A map of Hyperspace for Universe A will not be the same as for Universe B; the Astral realms are where the walls of unreality are the thinnest and most likely to interact with each other. Nullspace is the furthest from Hyperspace and is where P-brane harmony reasserts itself. All universes share a common locale in the infinity of Nullspace, and many harmonies are reassembled or cancelled in the bowels of that place.