All life in the dreamscape is made from bio-jallanecks, and is birthed from a plant-like lifeform known as birtherium, which sucks in organisms from the host's microbiome and converts it to bring it to the dreamscape's non-physical world.
Affiliate Lifeforms, affiliated Lifeforms, or affiliates, are the primary form of life in the dreamscape. They are intelligent beings who are born with unmatched knowledge of a specific area of a person's psyche, and physically represent how healthy that area is.
Affiliate lifeforms will tend to take the form of a person, character, or object the host knows that best suites their role, with some limitation.
For an affiliate to take on a certain form, the host has to be consciously aware of the existence of that form's origin. Two affiliates also can't both take the form of the exact same thing, though they can represent different incarnations of the same thing. There’s also a chance that an affiliate doesn’t truly have the best representation of their role. It’s entirely possible that the best representation for one role is also the best representation for another, so, with seniority in mind, one of those affiliates would be represented by the next best thing. Theoretically, this can also stack to the point where an affiliate is actually a really bad physical representation for their role.
Affiliate lifeforms have an uncanny amount of knowledge about their host's current status with their assigned role. This can be seen with Childhood, who can describe events from Donnie's childhood with extreme accuracy, being able to recall events exactly as they happened.
Affiliate lifeforms, by nature, unconditionally love their host, in much the same way a mother does her child.
Affiliates always tend to be very comfortable with their current form.
Unlike affiliated lifeforms, unaffiliates have no connection to the host's psyche, and are essentially random forms of life that just appear in the dreamscape as biological waste.
Unaffiliated lifeforms are very diverse, with some having close to affiliate level intelligence.