The moon is ever-present in Mundis, and it is an object of interest to both Thom and Carmen at various points in the story. It provides Carmen with her Luna Talent, and she feels a close bond with it.

The moon, while being a physical "object" that one can see in the sky, is more of a metaphysical realm than a rock floating in outer space. Little is known about the moon outside of the origins of man lying therein.