Dunum was a human male who served as an officer of the Galactic Empire in the years prior to the Battle of Yavin. For a time, he served at the Imperial Complex on Lothal until he was assigned to the office of Assessor Potalla on Coruscant. In 4 BBY,[source?] Dunum accompanied Potalla to Lothal, where she was tasked to evaluate the suitability of Commandant Cumberlayne Aresko and Taskmaster Myles Grint, who oversaw the Academy for Young Imperials. In hopes of impressing her, Aresko and Grint framed Dunum by making it appear he had helped Sabine Wren infiltrate the Academy.