The Prince in Chains is the herald of the god of darkness, Zon-Kuthon, and serves as the manifestation of his will on Golarion, but he was once so much more. Before his transformation into a herald, the Prince in Chains was a spirit creature who had fathered both Zon-Kuthon and his half sister Shelyn. Now the Prince in Chains is a hateful creature of broken flesh, pain and chains.