Doman Beruss was a Senator of the Human male persuasion, he represented the Illodia sector within the Galactic Empire, and later, the New Republic. He had an aunt, also named Doman Beruss, who served as senator for the Corellian sector.
During his time in the Imperial Senate, he formed a strong bond with Bail Prestor Organa. Later, he was a consistent source of support for Leia Organa Solo during her tenure as Chief of State of the New Republic. This dynamic shifted during the Black Fleet Crisis, when Beruss held the position of chairman within the Ministry Council. Following the capture of Han Solo on his way to the Fifth Battle Group, Beruss initiated a Vote of No Confidence targeting Organa. His concern was that she might escalate the conflict with the Yevetha solely to rescue Han. Although Beruss's motivations were noble, this vote put a strain on his relationship with Organa.
Doman was the father of a son named Avan, who served as a member of Rogue Squadron.