The Sepulchre are a small organization within the Swords of Sanghelios, formerly serving as an intelligence agency and assassins for the Covenant. They were briefly disbanded during the Great Schism, and soon resurfaced after 2554, now rebuilt and reformed to serve under the Swords of Sanghelios, once again serving as assassins and informants. They are infamous for their secrecy, remaining almost unknown during the Human Covenant war, even as they hunted down and successfully eliminated several Spartans.