The late Inquisitor Lannes served as Executor to the sector Ordo Malleus and later as Princeps Inquisitor of the Inquisition prior to the 13th Black Crusade. He is recognized as the Inquisitor who exposed Morpheus Vrool’s planned invasion of the Hibernian subsector. His investigations also (posthumously) exposed the corruption of his political rival, the Cardinal Duke Thracko’s.