R2-Q5 is an Imperial astromech droid appearing in Star Wars. He is a black-domed R2 unit stationed on the Death Star and serves the Empire rather than the Rebel Alliance. The droid is best known for his brief appearance in A New Hope, where he stands out among the other astromechs due to his dark coloration and Imperial affiliation. R2-Q5 functions as a background character, helping to establish the setting and atmosphere of the Death Star's operations.