|“||You have your Laws and we have ours. The difference is only that we do not pretend ours are not cruel.||”|
Gwyn ap Nudd is the leader of the Wild Hunt and a Welsh mythological figure.
Gwyn has led the Wild Hunt for centuries. As leader of the Hunt, it was his blood that new recruits were forced to drink as part of their initiation.
After the capture of the half-Shadowhunter, half-faerie Mark Blackthorn, he was surrendered to Gwyn. He then claimed the boy and made him a Hunter. Seen as a gift from the Queen of the Seelie Court and Sebastian Morgenstern, Gwyn ap Nudd met with the Queen to quickly return the favor.
When asked about the gathering of the dead from a recent battle on Adamant Citadel, Gwyn told her that they did not wish to involve themselves with the battle of the Nephilim and the Endarkened, the angels and demons, much to the Queen's disappointment. When the Queen asked for his advice and aid in the battle as compensation for the boy, apparently rare and could instill fear among demons, Gwyn insisted that he did not need the boy to cause fear and that the boy was not worth such trouble as risking involvement with war. So instead, the Queen just asked him to have the Hunters gather the dead after the battle in Alicante, to which Gwyn hesitantly agreed to. They were interrupted by the Queen's knight Meliorn, and he left.
When faeries began to get murdered by a then unidentified group, the murders connected to a series of mundane deaths, the Unseelie Court launched an investigation into it. Iarlath was able to convince someone of power to let Gwyn relinquish one of his hunters, Mark Blackthorn, back to his family to make the Shadowhunters secretly investigate for them, despite the Cold Peace.
During a conversation with Cristina Rosales, Mark casually mentioned Gwyn's weakness—his cloak—a secret that Mark, as a member of the Hunt, was not allowed to ever divulge to anyone. His faerie lover Kieran overheard this and, in an attempt to get him back, told Iarlath. Gwyn, Iarlath, and Kieran came to the Institute shortly after for his punishment: twenty lashes. Gwyn expressed his regret for the nature of his visit but explained that it was necessary because Mark broke one of their oldest laws.
Throughout, Gwyn remained patient as the Shadowhunters continued to object to the whippings and when Julian volunteered in Mark's place. When Julian's parabatai Emma felt the pain he was experiencing, Gwyn understood and silenced Iarlath when he complained about Emma's screaming. Gwyn ordered Iarlath to stop and allowed Emma to heal Julian, and was visibly saddened when Emma, after knocking Jules out with a rune, insisted on taking the whipping herself.
Meeting Diana Wrayburn
A few weeks after the defeat of Malcolm Fade, Gwyn rode to the Los Angeles Institute alone to tell Mark that Kieran was to be executed for the murder of Iarlath. He asked Mark to travel to the Unseelie Court and rescue Kieran, as he and the Wild Hunt had sworn an oath not to interfere. Gwyn was deeply disappointed and slightly angry when Mark refused, citing Kieran's betrayal as a reason why he owed Kieran nothing. Before leaving Gwyn, visibly enamoured with Diana Wrayburn, threw an acorn to her as a way to summon him.
Later on in the Seelie Court, Gwyn arrived to take the Shadowhunters to the Blackthorns at the London Institute. He was happy with Mark for saving Kieran, and looked upon him with pride. At the London Institute, Gwyn and the group from Faerie were met by the Blackthorns and Diana. Gwyn nervously flirted with Diana and asked to court her—to the shock of everyone around them—suggesting a few faerie pastimes. Diana politely refused his offers and suggested a normal dinner instead, delighting Gwyn and earning a round of applause from the Blackthorns.
Gwyn later visited Diana at her apartment in Idris and took her on a picnic in Brocelind Forest. They enjoyed themselves, finding each other easy to talk to, but the picnic was cut short when Diana noticed a blight in the center of the forest.
When the Unseelie King sent the Seven Riders after the Blackthorns, Mark used Diana's acorn to summon Gwyn and ask him to find his siblings, who were somewhere in London and unsafe. Gwyn was annoyed that the acorn was used by Mark, but promised to try after a little encouragement and flattery. Along with Diana he managed to find and rescue Ty, Livvy, Kit from the Riders, and rode back with Diana to Alicante.
Diana bound his wounds received from the Riders, and he questioned her unwillingness to run the Los Angeles Institute. She explained an interview was needed to become a Head, and revealed to Gwyn her greatest secret, that she had been born David Wrayburn and used mundane medicine to change her gender. Gwyn called Diana the bravest woman he'd ever met and asked to hold her, which she let him.
Unlike many of his kind, Gwyn appears honorable and compassionate, though capable of ruthlessness at the same time, especially to his Hunters. Gwyn is also slightly distant from his warriors and has mysterious intentions.
As is typical with members of the Wild Hunt, Gwyn ap Nudd has heterochromia iridum; one of his eyes is black, and the other is a very pale blue. He is also described as a big, broad man with a beard, wide eyes, broad cheekbones, and wicked eyebrows.
- Cloak: Gwyn possesses a cloak that, if stolen, could force him to yield authority to whomever steals it.
- Hunting horn: Gwyn sounds his horn to announce their arrival.
- City of Heavenly Fire (first appearance)
- Bitter of Tongue (mentioned only)
- A History of Notable Shadowhunters & Denizens of the Downworld
- Lady Midnight
- Lord of Shadows
- The character is based on a Celtic mythological figure, Gwyn ap Nudd, who is a psychopomp and ruler of the Otherworld, or the Welsh Underworld. He is often associated to the Wild Hunt and is listed as one of its many leaders, particularly in Wales.