Master Chief, Heroes Wiki

Master Chief Petty Officer John-117, also known as simply the Master Chief, is the main protagonist of the Halo franchise. He is an Spartan-II commando of the UNSC Naval Special Warfare Command who became one of the most important UNSC heroes during the Human-Covenant war. With over thirty years of active duty, he has become one of the most decorated war veterans in the United Nations Space Command, earning every known UNSC medal except the Prisoner of War Medallion. His goal is to save humanity

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