In his lab on the Imperial throne-world, Darth Sidious kept a number of stolen Jedi lightsabers if he needed them. In 10 ABY, he discovered onboard his Super Star Destroyer Eclipse that Luke Skywalker renounced the dark side thanks to the efforts of his twin sister, Leia Organa Solo.
Enraged, Sidious used the lightsaber to attack Luke. Despite the Sith Lord's ferocious power, he was caught off guard by Skywalker. Mere minutes later, the Eclipse was destroyed along with Sidious's clone.
- Dark Empire 6: The Fate of a Galaxy (First appearance)