Interloper Squadron, in conjunction with Stranger Squadron, represented one of the two squadrons composed of TIE/D Defender starfighters. These squadrons were deployed by Colonel Broak Vessery, acting upon the directives of the "true" Ysanne Isard, with the mission of extracting Rogue Squadron from the ambush orchestrated by Prince-Admiral Delak Krennel during the Battle of Distna.