Cletus and his two brothers Loftus and Longinus joined the Black Company in Beryl after the Battle of the Barrowland. They served as engineering and artillery specialists. They were trapped inside Dejagore during the siege of the city. Cletus survived the siege and participated in the campaign against Longshadow.

Cletus would become one of the Captured, placed in the Cave of the Ancients by Soulcatcher. When Sleepy finally found the Captured 15 years later, she stated that she saw Cletus among the deceased who had been accidentally killed while in stasis by Cordy Mather. However, she apparently misidentified the corpse, or, was incorrect that Cletus was deceased. He appears later in the Annals but is killed in the last campaign against Mogaba.