Master Builder

The Master Builder, also referred to as Faber, was a notable Forerunner individual most famed as the architect of the Halo Array. He was the head of the Builders, a rate associated with technology and engineering, and among the most powerful Forerunners. It is not known what became of him, though some records suggest he may have been killed in the final days of the Forerunner-Flood War.

In the Covenant religion
Though the Covenant had access to few concrete details about the Master Builder, his role as the creator of the Halos was known. Due to the monumental significance of the "Sacred Rings", he was likely the most popular deity in the Covenant pantheon. Known as Etan Ahron in the Covenant common language and sometimes given the epithet Ring-maker, he is associated with applied sciences, craftsmen, techaries and discovery-priests, artisans, architects and builders.