Billy Dee Williams (Lando Calrissian), Mark Hamill (Luke Skywalker), Harrison Ford (Han Solo), Alec Guinness (Obi-Wan Kenobi), Carrie Fisher (Princess Leia), and Peter Cushing (Grand Moff Tarkin) are the only ones in the voice cast to reprise their roles from the films. But since Cushing died in the 1980s, his voice was taken from archive material.
A satellite image of Sao Paolo was used for the loading screen of Yavin 4.