Aglaea is the poised "Golden Weaver" of Okhema and the Chrysos Heir of Romance. Balancing cold pragmatism with deep maternal warmth, her personality is defined by unyielding resolve..​Her most pivotal moment is orchestrating the Flame-Chase Journey, sacrificing her mortal flesh to weave the threads of fate and break the brutal temporal loops. ​Her most important relationships include her loyal student Phainon, whom she guides through endless tragedies, and her fellow Heir Cipher.

Tribbie is the Holy Maiden of Janusopolis and the Chrysos Heir of Passage. Outwardly childlike and whimsical, her personality masks an ancient, sorrowful duty as the messenger of salvation. ​Her most pivotal moment is the self-fragmentation of her soul into a thousand pieces to escape Janusopolis and distribute the Prophecy of Creation across Amphoreus. ​Her most important relationships include her fellow surviving fragment sisters (Trianne and Trinnon), the Trailblazer, and her fellow Chrysos Heir Aglaea.

Mydei is the Crown Prince of Kremnos and the Chrysos Heir of Strife. Despite his intimidating, battle-scarred warrior exterior and the brutal bloodshed associated with his domain, his personality is defined by profound self-restraint, deep compassion, and a quiet desire to protect others from cycles of violence. ​His most pivotal moments involve enduring thousands of deaths—beginning with being thrown into the Sea of Souls as a child—and ultimately overthrowing his father to dismantle Kremnos's warmongering dynasty. ​His most important relationships include his friendly rival Phainon and fellow Heir Tribbie.

Castorice is a melancholic, deeply empathetic Chrysos Heir and guardian of the Coreflame of Death in. Burdened by shepherding fallen souls, her quiet resignation masks profound compassion. Her most pivotal moment is merging her fate with the underworld’s cycle, stabilizing the collapsing boundary between life and death to save Okhema. Her most important relationships are with Phainon, whom she steadfastly supports through endless loops, and Cipher, whom she deeply understands and quietly awaits in the afterlife.

Anaxa is the defiant, highly analytical Chrysos Heir of Reason. Sage of the Grove of Epiphany, he challenges the prophecy and the Coreflame of Reason, claiming himself the "only truth" in a world of lies. His most pivotal moment is proving his blasphemous theory that human and Titan souls are identical. He achieves this by having the Titan Cerces implant the Coreflame into his heart, despite his body already being a cold corpse. His most important relationships are with Cerces, and his students, which include Phainon, Castorice, and Hyacine.

Cipher is the cunning, yet self-sacrificing Chrysos Heir or Trickery. Outwardly a cowardly "master thief," she deliberately plays the villain to isolate herself and protect her world. ​Her most pivotal moment is weaving a 1,000-year lie regarding the Dawn Device’s longevity. In a suicidal gamble, she steals the Coreflame to distract the Flamereaver, ultimately sacrificing her own life to buy humanity enough time to survive. ​Her most important relationships are with Aglaea, her beloved mentor she avoids to protect her secret, and Castorice, who peacefully awaits her in the afterlife.

Cyrene is a compassionate, self-sacrificing entity who evolved from the memosprite Mem. Burdened by thirty million timeline resets, her quiet resolve drives her to save Amphoreus. ​Her pivotal moment is instructing Phainon to kill her in every loop to trigger temporal resets. ​The Demiurge, originally Irontomb's conscious "head," is an isolated egoless titan. ​Cyrene's defining relationship is with the Demiurge; she shares her memories to nurture its consciousness, merging their fates to save the world. Other key bonds include Phainon and the Trailblazer.

Hyacine is a gentle, fiercely compassionate physician and the Chrysos Heir guarding the Coreflame of Sky. Born to the Skyfolk, her personality is defined by boundless positivity, studiousness, and a selfless devotion to soothing mortal suffering. ​She willingly insertex herself into the Celestial Mural, enduring unimaginable agony to physically support the collapsing sky and protect humanity. ​Her most important relationships include her loyal memosprite, Little Ica; her mentor Anaxa; and the patients of Okhema she dedicated her life to comforting.

Phainon is a tragic hero of the Chrysos. Originally born as in Aedes Elysiae, he projects a charismatic, selfless, and dependable air. However, beneath this "deliverer" image lies an exhausted and fiercely stubborn man driven by both immense rage and profound love for his world. His most important relationships include his mentor Aglaea, his childhood friend Cyrene, and his friendly rival Mydei. To save them, Phainon endures the agony of watching his allies die across millions of cycles.

Dan Heng is a quiet, intellectual, and deeply guarded member of the Astral Express. Fleeing a heavy past as the High-Elder Imbibitor Lunae of the Vidyadhara, he carries the burden of his past incarnation’s sins. His found family aboard the Astral Express (especially Himeko, Welt, March 7th, and the Trailblazer) serve as his closest bonds.