Commodore Mabettye served as an officer within the New Republic Defense Fleet, and was a member of the Mon Calamari species.
During the Yuuzhan Vong War, Mabettye held the rank of commander aboard the Poesy, a Mon Calamari light cruiser. The Poesy had been tasked to Duro. During the Battle of Duro, he died when Yuuzhan Vong warships obliterated the Poesy as they invaded.