Dark-kin are a race of humans with the blood of fiends (demons, devils, and gods-know-what-else) running through their veins. Sebastian Arnyal is the most obvious example, and his dark-kin heritage continues to evolve each month. The violent Freeport mercenary known as Amalia Grat is another.

Dark-kin have a few traits that make them distinct. For one, they are completely immune to magical charms. More than one ssanu has discovered this the hard way.

For another, dark-kin can see through magical darkness. Sebastian has yet to use this to his advantage, but other dark-kin take advantage of this tactic whenever they can.

Finally, dark-kin cause animals to get very nervous around them. This makes it nearly impossible for Sebastian to ride a horse unaided. Dogs howl, cats hiss, horses whinny, and everything else runs away.