Nyx Ulric

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 Nox Fleuret of Tenebrae when Niflheim invades Lucis.

Appearance
Nyx is a young man with brown hair and blue eyes. He wears the black uniform typical of his fellow Glaives, but his is customized with a silver horn on its hood, purple ribbons on its back, and pelts of blue-gray fur on its left sleeve.

Personality
Nyx is a heroic individual who feels indebted to King Regis Lucis Caelum CXIII. He is arrogant and is haunted by the memory of his sister's death. When his comrades betray him, Nyx remains loyal to the Lucian royal family; when Insomnia falls, he hangs onto hope and resolves to fight for the future.

Abilities
Nyx is a skilled wielder of the Lucian royal family's powers. He favors his ability to warp, and when he is deemed worthy of the Ring of the Lucii, he becomes even more powerful and gains the ability to control the Old Wall.

Story
Nyx grew up alongside Libertus Ostium in Galahd. His sister was killed, and he was saved by King Regis of Lucis. Seeking to repay his debt to the monarch, Nyx joined the Kingsglaive.

Alongside his fellow Glaives, Nyx defends the borders of Lucis from Niflheim and Tenebrae's forces. He disobeys Titus Drautos's order to retreat, and instead chooses to save Libertus, his childhood friend, from Diamond Weapon, a daemon war machine. As punishment Nyx is placed on guard duty upon his return to Insomnia, the crown city of Lucis.

Three days before a peace treaty is to be signed between King Regis of Lucis and Emperor Iedolas Aldercapt of Niflheim, Nyx is relocated to the Citadel by Drautos. The men discuss the death of Crowe Altius, and the next day, Nyx gets into a heated argument with Libertus after seeing Crowe's corpse. That evening, Nyx attends a party celebrating the treaty signing and meets Princess Lunafreya Nox Fleuret.

On the day the peace treaty is to be signed, Nyx discovers Lunafreya has been kidnapped and Drautos has mysteriously disappeared. He demands the Kingsglaive's deployment from King Regis, and leads his comrades on a mission aboard a Niflheim airship to rescue the princess. Nyx is betrayed by a majority of his fellow Glaives, but he frees Lunafreya and uses the airship to fly back to the Citadel with her. There, they help a wounded King Regis escape Imperial General Glauca, who seeks the Ring of the Lucii, a ring that gives special powers to the Lucii's chosen.

At the end of a secret passageway, Nyx questions King Regis's decision to sacrifice Insomnia for Prince Noctis's continued safety. He agrees to protect Lunafreya, who is given the Ring of the Lucii, and flees with her after Regis is impaled by Glauca's blade.

As he and Lunafreya drive away from the Citadel, Nyx is contacted by Drautos and ordered to rendezvous with him in Section D of Insomnia. In the city plaza, he is attacked by Luche Lazarus and discovers through Libertus's intervention that Drautos is truly Glauca. To protect his friends, Nyx puts on the Ring of the Lucii and is granted its power in exchange for his life. After ordering Libertus to get Lunafreya somewhere safe, he engages Glauca while wielding the power of the Lucii. In the clash's aftermath, Nyx dies peacefully as he wishes Noctis a healthy rule.

Creation and development
The likeness of Johan Akan, a French model, is used to portray Nyx. Neil Newbon is the character's motion capture artist.

Voice
In the Japanese version of Kingsglaive: Final Fantasy XV, Nyx is voiced by. In the film's English version, he is voiced by Aaron Paul.