Agripinaa is a great forge world of the Segmentum Obscurus, positioned in the perilous marches near the Eye of Terror and the region once anchored by Cadia. Its place on the very frontier of Chaos has made it one of the most heavily militarized industrial worlds in the Imperium, its manufactorums laboring ceaselessly to arm the fleets and armies that guard against the horrors of the warp.
As a servant of the Adeptus Mechanicus, Agripinaa produces war materiel on a colossal scale, and its output has supplied the defenders of the region through countless Black Crusades and border wars. Its proximity to the Eye means the world lives under perpetual threat, its skies watched and its defenses never at rest, for the enemy is quite literally on the doorstep.
When the defenses of the Cadian Gate finally collapsed, Agripinaa found itself thrust into the front line of a shattered frontier, besieged and embattled as the tide of Chaos surged outward. The forge world became a vital rallying point and shield for the survivors of that catastrophe, its arsenals more precious than ever. Grim, embattled, and indispensable, Agripinaa endures as a smoke-wreathed bastion on the edge of damnation, forging the weapons that hold the darkness at bay.