Darth Vader’s lightsaber was the personal lightsaber of Darth Vader, a Sith Lord who served as Darth Sidious‘ last apprentice and supreme military commander of the Galactic Empire. He built the weapon after he lost his previous saber during a skirmish on Cabarria.
The lightsaber would later be used to destroy Obi-Wan Kenobi and cut off the right hand of his son, Luke Skywalker. During their confrontation on the second Death Star, Luke returned the favor, cutting off the right hand of Darth Vader.