The Tiste Andii are an ancient people of darkness, led by Anomander Rake from their stronghold of Moon's Spawn - a vast floating fortress of hollowed-out black stone that has drifted across the skies of multiple continents over millennia. During the Genabackis campaign Moon's Spawn positions itself above the siege of Pale, its presence a constant reminder that the forces opposing the Malazan Empire include powers that do not measure themselves against human armies. The Tiste Andii are not simply a military asset - they are a civilisation whose concerns and griefs predate the current world by millennia, and whose involvement in present conflicts is shaped by obligations most mortals cannot fully comprehend.