Prophet of Truth

Prophet of Truth was the leader of the three Prophet Hierarchs that led the Covenant High Council and is the central antagonist of Halo 2 and ''Halo 3. ''He was one of the main instigators of the war against humanity, plotting the ousting of the Elites from the Covenant and replaced them with the Brutes. He eventually became the de facto leader of the Covenant from which the position he led the forces in an attempt to activate the Halo Array.