Avelard II born Avelard Mustami was the ruler during the Regency period, succeeding Juan Borges, perhaps by election. Around his time the Imperium saw unprecedented economic growth, particularly under his rule. The demands of the Imperium wanted the Mentats to expand its training program and alter the size, pace or quality of the Order's training efforts. Under severe political pressure Avelard was about to sending troops to Tleilax to force this decision. The troops were composed of united Sardaukar and Landsraad strength He was succeeded by his wife, Maria Mustami.