Gwyn ap Nudd (, sometimes found with the antiquated spelling
Gwynn ap Nudd) is a Welsh mythological figure, the king of the
Tylwyth Teg or "
fair folk" and ruler of the Welsh
Otherworld,
Annwn. Described as a great warrior with a "blackened face", Gwyn is intimately associated with the otherworld in
medieval Welsh literature, and is associated with the international tradition of the
Wild Hunt.