Blessings of the God-Emperor Upon You:Ash Walkers

Those mutated by constant exposure to the choking ash and geothermal radiation typically display ash-grey skin, tremendous physical strength, elongated bat-like ears, and the loss of their sight along with the sense of smell as the bone surrounding both the ocular and nasal area of their skull weakens - collapsing inwards as the skin rots, leaving only a gaping pit across their face - which forces the mutants to rely on a twisted version of echolocation to navigate. These poor creatures, termed "ash walkers" by the citizens, are shunned and driven to the very fringes of society to eke out a miserable survival amongst the blasted wastelands.