Nyx Ulric is the main protagonist of Kingsglaive: Final Fantasy XV and a member of the eponymous Kingsglaive. Hailing from Galahd, he is tasked with protecting Princess Lunafreya of Tenebrae when Niflheim invades Lucis.

"Saved by King Regis as a child, Nyx repays the debt by serving the Kingsglaive with distinction. His unique ability to wield the King's magic and epic exploits in combat have earned him the moniker of 'hero' among his peers."