Archons are part of the triumvirate leadership of a Fallen House, and serve the Prime Servitor; working as a go between communicating the wills of each to the other. Archons also act as mechanics for their Primes, and take part in some sort of unclear symbiosis, but are still clearly defined as a servant to their Prime. If an Archon were to fall, that House's Prime Servitor becomes vulnerable to attack. They are also responsible for overseeing a Fallen ritual know as the Archon's Forge, an ancient rite of passage for Fallen seeking to improve their station.
Houses seem to have several high station mechanics called "Rising Archons" ready to assume the role should there be a need to. They themselves appear to be skilled mechanics, eager to prove their worth. How new Archons are selected is unclear, but during the course of the Reef Wars the House of Wolves had no less than two different Archons during the course of the war.
Other duties of Archons are unclear, but they do seem to have a role in the ritualistic docking that Fallen Dregs are subject to. Prime Servitors also play some role in Fallen Star Flight, and it may be the Archon's role in conveying the wishes of the Kell to the Prime on the course. In the absence of a Kell, an Archon can serve as the de facto leader of a House in their stead. Riksis, Devil Archon ruled the House of Devils since the death of his Kell over one hundred years ago. His successor, Aksis, Archon Prime, also used his new authority as Archon to take control of the House, although his power was far more limited due to the radical nature of his views, and the death of Sepiks Prime.
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