提供电影《星球大战》中的角色名单和他们的描述。
1. Luke Skywalker - A farm boy who becomes a Jedi and leads the Rebel Alliance against the Empire.

2. Princess Leia - A member of the Rebel Alliance and a skilled leader and warrior.

3. Han Solo - A smuggler and pilot who becomes a key member of the Rebel Alliance.

4. Darth Vader - A powerful Sith Lord and henchman of the Emperor.

5. Emperor Palpatine - The leader of the Galactic Empire and a powerful Sith Lord.

6. Obi-Wan Kenobi - A Jedi Master who trains Luke Skywalker and battles against the Empire.

7. Yoda - A wise and powerful Jedi Master who trains Luke Skywalker.

8. Chewbacca - A loyal Wookiee and co-pilot of the Millennium Falcon.

9. R2-D2 - A loyal astromech droid who aids the Rebel Alliance.

10. C-3PO - A protocol droid who serves as a translator and assistant to the Rebel Alliance.