The inner serpent. Possession. A second will behind the eyes.

The nematode does not deliver the virus and die. It colonises. It establishes a self-sustaining population in the central nervous system and cycles generations inside a host that no longer ages, which means the colony itself has no actuarial horizon. Neural parasitism of this kind is not invented: Toxoplasma cysts the amygdala and inverts rodent fear of cat urine; the hairworm Spinochordodes drives a cricket to drown so the adult can emerge in water; the jewel wasp injects two ganglia of a cockroach with surgical precision and walks the animal to its burrow. The Archon is the same class of rewrite, seated permanently in the brainstem.

From that seat the colony secretes neuromodulators into cerebrospinal fluid, enforces the haemophagic drive, and broadcasts the pheromone signature that other colonies read as rank. It is not a soul. It is a quorum-sensing occupier whose sensory apparatus has been grafted onto the host's own. The host still thinks. The host's threat-assessment, appetite, and social posture have been edited at the tissue that produces them.