5D6-RA-7, nicknamed Fivedesix by those around him, was an RA-7 protocol droid in service to the Galactic Empire during the Galactic Civil War. Five-D served as an aide to Admiral Conan Antonio Motti's staff around 0 BBY. Fivedesix was known to be foul-tempered and vindictive for a former service droid, making him feared by other droids. He was a spy for the Imperial Security Bureau, and secretly investigated Imperial officers whose loyalties were in question. Fivedesix was eventually destroyed during the destruction of the first Death Star.