Gus

For every light there is a dark and for everything that preaches the word of the saving grace, there is something that would snuff it out.. The Husk is both and neither. The nameless entity is something ancient and- at its core- vile. Outside of a proper host it seeks those with downtrodden spirits who barely have the kindest regards for themselves. It's a being that barters with the weak hearted and desperate, preying on those that it can beat down, those that have finally met an all time low.

The Husk, although demonic, is considered a 'primordial evil', a stem of some demonic forces although not the original source. Using new hosts, it is able to create new shades and followers via corpses, reanimation, other possessions and hypnosis.

This being has latched onto Gus as its chosen host, fused into their soul and subconscious. They occupy the same space, not unlike college dormmates might with the exception they share the same sort of 'hive mind'.