Faber-of-Will-and-Might (Earth-2042)

"The Flood cover more of our galaxywith each passing day. They feast on the essence of life itself. The only way to stop their advance is to remove that life upon which they feast."

- Faber discussing the necessity of the Halo Array to the Librarian

Faber-of-Will-and-Might, often shortened to Faber, most commonly known by his title as the Master Builder, was a male Force-sensitive Forerunner Builder. He was immensely powerful but exceedingly corrupt, as well as a ruthless and cunning figure. Faber commissioned the construction of the Halo Array and was the Ur-Didact's political arch-enemy for many millennia due to the latter's adamant opposition to the Halos. This conflict eventually culminated in Faber's takeover of the Old Council and the Didact's exile.

Source

 * https://www.halopedia.org/Faber-of-Will-and-Might