Master Chief, a super-soldier who is trying to uncover the mystery of a strange object, the Halo. The enemies he will encounter such as the Covenant, an alien race bent on destruction. The Covenant is broken up into several classes, which include grunts, elites, hunters, and jackals, all of which have certain tendencies, weaknesses, and strengths. the Flood, a parasitic alien that takes over human and Covenant soldiers and causes havoc.
