Domains: Darkness, night's depths, the voices in the dark.
Era of ascension: Golden Age of Man (~150,000 years ago). Cohort: current. Lorus predates the Long Winter and is among the only deities to survive it. He did not survive because his followers were strong — organized worship of darkness has always been thin. He survived because primal fear of the dark is involuntary and universal; it does not require a temple.
Worshipped by: No organized culture maintains his cult; his prayer pool is fed by every person who flinches from an unlit room. Some cave-dwelling peoples and those who seek protection from the dark make deliberate offerings, but Lorus does not require deliberate worship to persist. (The worships edge is authored downstream on the worshipper, not here.)
Lorus is mentally ill. He believes darkness is inherently pure — the necessary counterpart to a world obsessed with light — and hears his own voices in the dark night, which he experiences as his own thoughts reflected back. He is neutral rather than malevolent; he does not seek followers in the way other daemons do. He simply endures. That endurance, across an age when every other Golden Age deity died, is the fact that defines him.