Auberon is the King of the Unseelie Court of Faerie. He is the King of Winter, so each time he appears in the mortal world, the people in the room or area where he lands feel the temperature drop prior to his arrival.
His hair is charcoal gray with a streak of silver in it. He has pale lips. He is the King of Winter, which makes him the most powerful king of the Four Courts of Faerie.
Auberon is prohibited from interacting with the mortal realm. He does maneuver between both worlds as he wishes, however. Auberon owns the apartment that Sonny Flannery lives in. He also raised Sonny from the time he was a baby until now. It turns out that Auberon is Kelley's biological father. In an attempt to save his place on the throne and his life, Auberon is responsible for calling the Wild Hunt, to hunt Kelley down and kill her.