Ardee

Ardee was an astromech droid in service to a human man who claimed to be the Rebel Alliance pilot Luke Skywalker during the Galactic Civil War. In 3 ABY, the man boasted in a bar that he had destroyed the Death Star, claiming that Ardee had handled his targeting computer during the event. The droid's master was then approached by the Sith Lord Darth Vader, who executed him to send a message to anyone else who thought of impersonating Skywalker.

Text and facts from the “Ardee” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.