The Angels of Vigilance is a monastic Chapter of Loyalist Space Marines whose mysterious origins may go back to the bygone days of the Second Founding during the 31st Millennium. It is unknown from which Space Marines Legion their gene-seed was drawn, though the Angels of Vigilance themselves believe they are descended from the Dark Angels. They have stood silent vigil over the Eye of Terror as sentinels against the encroaching forces of Chaos for nearly ten millennia if the rumours about their origins are true.