The collective organization is known as The Holy Orders of the Emperor's Inquisition. Althought they have various methodologies and can belong to different Ordos, they ultimately serve the Emperor and the Imperium of Man. There is no specific background that is required for an Inquisitor, as anyone who shows talent, can be recruited by the Holy Ordos. The three main Ordos are the Ordo Hereticus, hunters of the eneny Within, Ordo Xenos standing vigilant against the threats Without and Ordo Malleus, the defenders against daemonic incursion, the enemy Beyond. 

The Holy Inquisition is not only divided by Ordos and by seniority, but by philosophy and political viewpoints. Due to the nature of the Inquisition, it is inevitable for the Orders servants to give an interpretation of the Emperor’s Divine Will, these explanations create the Puritan and Radical axis that can surface in any Ordo and have numerous sub-factions.