The ever-faithful R2-D2 (Aretoo-Detoo) is a feisty astromech droid of surprising determination and resourcefulness. Communicating in a variety of beeps and whistles, Artoo's cylindrical body is equipped with multiple instruments and sensors designed to carry out his primary utility droid functions. Along with his tall, golden counterpart, C-3PO, Artoo frequently finds himself coming to the aid of his human masters. Owned by the heroic Luke Skywalker, Artoo is instrumental in leading the young farm boy to the Jedi Knight, Obi-Wan Kenobi and initiating Luke's involvement with the Rebel Alliance. Often seated in the droid socket of his master's X-wing Fighter, Artoo accompanies Luke on his successful Rebel Mission to destroy the Empire's Death Star, and on his personal quest to train as a Jedi under the tutelage of the wise Jedi Master Yoda.