Shadows of Calus
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The Shadows of Calus are an elite team of Loyalist champions in the service of Emperor Calus, composed of individuals from various civilizations who were personally recruited by Calus during his exile. In the days immediately before the Red Legion set out to the Solar System to wipe out the Guardians, Calus deployed his Shadows to assassinate the various conspirators behind the coup that deposed him. While the Shadows succeeded in eliminating nearly everyone on Calus's hit list except Caiatl, Umun'arath, Otzot (additionally referenced during Insight terminus strike), The Consul and Dominus Ghaul, none of them survived their mission.
In the aftermath of the Red War, Calus had since started auditioning Guardians to replace them as the newest generation of Shadows, starting with a trial through The Leviathan. They would later aid the emperor in clearing his ship of incursions from the Vex, Red Legion and Hive in addition to proving their meddle in the Menagerie; to which the Guardians that succeeded were given the title of Shadow much to the concerns of the Vanguard and the suspicions of Aunor Mahal.
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