The dreamscape is a non-physical realm that exists within the mind of every Human, Nymph, and Sylph, as well as the crosses between them. The dreamscape is where thoughts form, and where memories fester. It often portrays itself to its host as some sort of important or serene location, depending on the individual. Narcoleptics such as Felix are more in tune with their minds because they are trapped within it for longer periods of time than most. Insomniacs, on the other hand, have much less control of their lucidity, and are more vulnerable to threats on the dreamscape, such as synthetic nymph injections.
People that are split personalities, in some way or another, display each other within their dreamscapes.