The Covenant, or officially called the Covenant Empire, are a fictional theocratic hegemony of alien races who serve as the main antagonists in the first trilogy of the Halo video game series. They are composed of a diverse array of species united under the religious worship of the extinct Forerunners and their belief that the Forerunner ring worlds known as Halos will provide a path to salvation, known as the "Great Journey". After the high Covenant leadership—the three High Prophets—discover that the existence of the human species directly contradicts their ancient religion, they declare a genocidal campaign against humanity to preserve their own political power, knowing if they revealed this information to the rest of the Covenant it would mean the hegemony would fall into chaos. The Hi