The King has around fifty sons with many different women. A widespread belief was that, because he has no use for daughters, he had any female offspring killed. Sometime around the 1990s, the Unseelie King had a romantic encounter with a water faerie. The tryst resulted in Kieran, whom he traded to the Wild Hunt while the boy was still young, apparently due to Court politics.
The Unseelie King has a tall and lean build. He has two large, white horns curling from either side of his temples. He also has a deep pallor, with skin even whiter then Kieran's, and black hair.
The contrast of the sides of his face made it seem like it was divided down the middle. The right side was the face of a handsome young man—clean and uncannily beautiful—while the left was heavily disfigured, with tight, gray skin and several scars, as well as an empty eye socket.
- A History of Notable Shadowhunters & Denizens of the Downworld (first mention)
- Lady Midnight (mentioned only)
- Lord of Shadows (first appearance)