Adeptus Custodes Shadowkeepers

The Adeptus Custodes with black armor are known as the “Adeptus Custodes Shadowkeepers.” The Shadowkeepers are a specialized sub-faction within the Adeptus Custodes, responsible for guarding the darkest and most dangerous secrets of the Imperium, including the Dark Cells beneath the Imperial Palace on Terra. These cells contain forbidden artifacts, dangerous xenos creatures, and other perilous entities that pose a significant threat to humanity if unleashed.

The Shadowkeepers are distinguished by their black armor, which sets them apart from the typical gold armor worn by most Custodians. Their role is one of immense responsibility and secrecy, as they ensure that the most dangerous threats remain securely contained.