Valkherion is tall and powerfully built, with skin the pale matte color of old bone and white-hot filaments for hair, each strand moving as if stirred by an invisible updraft. Cold internal fire glows behind his eyes. His high-collared ash-grey robe is embroidered with gold edict-script that rearranges itself as he moves, though the words always appear legible to him. Long hands end in burnished metal finger caps. He waits with his weight centered precisely over both feet, never slouching or shifting; when he walks, his steps land with the careful finality of a seal pressed into wax. His wings are folded so tightly beneath his robe that their outline is easy to miss. The unexpected detail is that he keeps a tiny, carefully tended nest of living moss in a gold cup at his belt, watering it with a drop from his censer after every execution.

Valkherion is patient and controlled in deliberation, yet merciless once he has reached a conclusion. He considers himself compassionate because he does not punish from spite, but this self-image lets him inflict cruelty without acknowledging it. In public he is calm, procedural, and nearly impossible to provoke. Alone, he tends his moss cutting with fussy care and refuses to explain why. Evidence can interrupt his certainty for a moment; appeals to pity usually make him more rigid.

Valkherion was raised among the Hodne, celestial beings tasked with guarding the colonies and interpreting the Seven Decrees. He became renowned for memorizing edict-law and for making complicated rulings sound inevitable. His mentor, the jurist Eno, taught him that a decree existed to protect living people, not to replace judgment. During a period of unrest, Valkherion condemned Eno for refusing to authorize a purge. The sentence was legal under Valkherion's own interpretation, and carrying it out became the formative act that taught him to mistake consistency for virtue. Later, a prophecy warned that 'the Chain sings beneath petal and root.' Valkherion took it as a warning about the Children of Concord, a pacifist Qumon and Hollowed Sentinel community seeking redemption through Dreamroot integration. The community's pleas and evidence of peaceful intent did not change his reading. He ordered the attack on their refuge, Spiral Haven. His flame broke the Spiral Grove, and radiant salt poisoned its soil. More than three thousand people died. Valkherion remembers the operation as a completed duty, but the grove's thorns still bleed sap that carries the victims' names. He designed the Radiant Brand, a cathedral weapon satellite that could impose edict-light across colonies. It remains in orbit, an instrument of surveillance and suppression. His blade, Unforged Vow, is sealed in the Halo Vault, where its temperature rises when Bloom approaches. Valkherion now travels between colonial courts, enforcing the Seven Decrees and seeking traces of Qumon influence. He is also trying to locate the remaining Dreamroot communities before his opponents do. The moss in his belt-cup came from a surviving cutting of Spiral Haven; he tends it in secret and has never explained why.