R5-D4, also called "Red" by Luke Skywalker, was a red and white-striped R5 astromech droid owned by a group of Jawas on Tatooine in the early days of the Galactic Civil War. Shortly before the Battle of Yavin, the Jawas attempted to sell him to Owen Lars, but the droid purposely malfunctioned his motivator at the advice of R2-D2, so that Lars could purchase R2-D2 in R5-D4's place.