Nermil is the collective consciousness of a mutated radiophage mushroom colony. Often stumbling, nearly falling, there is always dirt under his nails and bags under his eyes.
He lives deep in an isolated part of the forest, where the radiation is very high and few venture inside.
Nermil's lair is within a long abandoned mining cave, where all sorts of plants and fungi and lichen (his siblings) have since grown and currently populate.
In the center of this cave, Nermil has built himself a makeshift throne off of the trunk of a rotting tree.