The Firmament encompasses all planes, multiverses and universes except Heaven, Hell and the Ether. The Firmament is generally considered to be surrounded by Ether but between Heaven and Hell. The Firmament is composed of an infinite number of multiverses, most of which are unknown to and incomprehensible by mortals native to our Reality. A few of the known planes include:

• The Astral Plane
• The Dream Realm
• Fairyland
• The Netherworld
• Panopathy
• Our Reality
• The Elemental Planes