Covenant

The Covenant, also referred to as the Covenant Empire, was a massive religious hegemony of multiple alien species that completely controlled a large portion of the galaxy for thousands of years. Originally a mutual alliance between the san'shyuum and the sangheili, the Covenant expanded to include six other core member races (huragok, lekgolo, unggoy, kig-yar, yanme'e, and jiralhanae), and numerous other "fringe" members, united in the worship of the mythified Forerunners and the Halo Array.