Rezyl Azzir was resurrected during the Dark Age by his Ghost, and made his way to a refugee camp located beneath the Traveler. At this time many worshiped the Traveler as a god, and formed Factions amongst themselves. Many of the Risen chose to join factions as warlords and enforcers, sowing chaos and distrust. Rezyl and others soon saw that the factions were a threat to the survival of Humanity, and the Risen who joined them were misusing their Light. Due to this dispute, the Faction Wars erupted and fighting quickly spread.
The war ended when the Fallen arrived and began attacking the refugees. Rezyl became a champion of both conflicts as he broke the power of the factions and helped to repel the Fallen assault. Many turned to him as a hero, and some believing that he may even be a god. With the factions now defeated, the camp became united and formed The Last City, and built walls to protect themselves. Over time more survivors and Risen arrived, and they soon became known as Guardians, who swore to protect Humanity. For years he watched the City grow and new Guardians rise, but grew fearful of old stories that told of servants of the Darkness coming to finish what was started during the Collapse. At the end of each day Rezyl would stare up at the Moon wondering what threat lurked up there.
- Yor's name comes from a forgotten language and translates to "The Eternal Abyss."