A recently promoted Inquisitor after serving as an Interrogator for Van Vuygens, Al-Subaai searches for alien influence among worlds of the Calixis Sector. He believes that everything in the galaxy is connected and that the various xenos races are part of a larger web of hostility. The Galaxy, he believes, is literally reacting to Human hegemony like the body reacts to a disease. To him, aliens and creatures of the Warp are symptoms of the galaxy's enmity towards mankind. He therefore advocates the destruction of all aliens, especially those who influence Humans.