Ghouls

Ghouls or necrotic post-humans, are decrepit, rotting, zombie-like mutants. They are recipients of intensive, elongated radiation sickness which decays their skin, as well as their ligaments. Paradoxically, they also have greatly extended overall lifespans and are, allegedly, immune to, and even brought back to health by the hazards of background radiation and/or nuclear fallout. There are two types: Feral ghouls and Intelligent ghouls. The difference between them is noticeable as the former are just mindless zombies and the latter are as behave just like a human. It is believe that all ghouls eventually become feral just at different rates as they loss their minds and sainty. Radiation speeds up this process.