Avenger was an Imperial EF76 Nebulon-B escort frigate that served in the Imperial Starfleet during the Galactic Civil War. Because of her attack in the Lesser Plooriod Cluster, a Rebel ship that carried D3RM3 with important food supplies for the Alliance, let it off in order to flee. Avenger sent a squadron of TIEs to finish it and left.
The Avenger then took part of an attempt to destroy a Habassan convoy above Retep V following the failure to do so by Thrasher. It sent TIE Avengers and TIE/sa bombers. However the fighters and then the frigate were destroyed by Rebel pilot Keyan Farlander.