... is very scientifical.
Figments are entities which exist on a conceptual level. We conceive of them, and thus they are made real. Whenever a stray thought is had, whenever an intricate plan formulated, on the Otherside a figment is born. When we push aside an idea for being too alien to our natures, that unborn seed of a thought sprouts into a figment all the same.
Everything that has ever been thought of; will ever be thought of; whatever has the potential to be thought of already exists in nascent form now, in the past, and future.
Figments are one of the fundamental entities which spring up from the fundamental laws of reality. They parallel elementals: elementals are beings of anima and forma which spring up from the natural cycles of the world, and have existed since before man, genius loci bound to physical places. By contrast, figments are also made spontaneously by the laws of reality, but theirs are based in the traditions and thoughts of sentient races, and furthermore are composed of mens and vis. They are not bound like genius loci to the land, but they are free to roam it, to come and go as they please. Especially now that the planes are broken.
Figments seem to be the byproduct of the sentient races and their thoughts. What purpose they have seems to be a mix of the concept they embody, and the individual personality of the figment. From what is known of them, it seems that they become more individualized as the concept ages.
Figments gather together in groups known as courts, which are ruled by a single figment which embodies the concept. The two known courts as of now are the "Court of Knowledge," and the "Court of Wrath." The Court of Knowledge we shall use as our example: almost every figment which encompasses the concept of knowledge, and others which are something of a stretch, pay fealty and homage to their overlord, the figment Know. While once the Court of Knowledge was led by the figment Knowledge, now that figment is an archangel. Which...
Figments have many names which are ascribed to their class of entity. One of them is "proto-gods," and another especially apt one is The Unmade. The making of a god is in worship, that one shall pay sacrifice to them and hold them in their thoughts. Figments garner power in the same way, and through mechanisms which are not well understood, they have in the past risen to the status of gods.
The Cognitive Realm
Figments do not exist in the conventional sense of the word. They are embodiments of perception and force, able to change their perception to fit forms which can exist on the material plane, and using their absolute mastery of force to lend to the illusion of their physical existence. Sometimes it has been known that especially powerful figments on their death shall somehow transmute from nothing into substance, their blood possessing supernatural abilities. Whether this is true physical existence or further illusions with the essence of the entity is unclear. As the figments are unreal, so too is their realm. It exists somewhere in the great depths of the planar infinity, some say beyond it, and not even the gods venture too deeply within for the maze of its truly infinite corridors and realms is too much for even them to overcome. It is said that when a figment is within its domain, it controls even the physical reality of said domain, rendering them almost invincible within their own territory.