Height: .96 meters tall Manufacturer: Industrial Automaton Type: Astromech droid Vehicle: Darth Vader's Sith starfighter Affiliation: Galactic Empire

When Anakin Skywalker fell to the dark side and became Darth Vader, he cast off his entire past. To further embrace this change, he had a Jedi starfighter painted black to become his Sith starfighter, and selected a similarly dark-hued astromech droid to replace his former droid companion R2-D2. Unlike the jovial, friendly relationship Anakin had with Artoo, Darth Vader regarded R4-K5 as little more than a functional tool.