High Quality Content by WIKIPEDIA articles! Admiral Ackbar is a fictional character in the Star Wars science fiction saga. A member of the amphibious Mon Calamari species, Ackbar was the foremost military commander of the Rebel Alliance who led major combat operations against the Galactic Empire and was later integral in the formation of the New Republic. Ackbar played a supporting role in the 1983 film Return of the Jedi, and later became a prominent character in the novels, comics books and other media of the Star Wars Expanded Universe.