The Perils of Chaos
Mutants range in appearance from the grotesque to the barely-noticeable. Some can still pretend to be human enough to walk the streets, with horns they can cover with a hat, a patch of green scales, and so forth.
Mutations mostly occur if you’ve been close to Chaos powers of some kind, wyrdstone, or if it runs in your family. Mutants become more and more recognizable as they grow or stay near their Chaos-infused source for long periods of time.
Though early-stage mutants may have the ability to speak and think like a normal human being, eventually they can become savages and kill without remorse should their minds be mutated too.