Determined to rescue Kanan, his fellow rebels infiltrated the Star Destroyer where he was held. While Hera Syndulla, Sabine Wren and Zeb Orrelios battled stormtroopers, Ezra Bridger freed Kanan from his cell.

The Inquisitor intercepted Kanan and Ezra, but Kanan defeated the Imperial agent in a duel, resulting in the Imperial agent’s death.

Kanan and his rescuers fled – and were saved by the arrival of Chopper, leading a rebel task force. The skirmish at Mustafar was one of the earliest rebel victories in the Galactic Civil War.

Vader often retreated to his castle on Mustafar to commune with the dark side of the Force. After the Death Star’s test-firing at Jedha, Vader received Orson Krennic, the project’s director, in his retreat to warn him about the necessity of ensuring the battle station’s security.

After the fall of the Empire, Vader’s castle was left in ruins, and became a pilgrimage site for cultists dedicated to the dark side. They uncovered some of the powerful location’s secrets, guarding them against unworthy pilgrims. Kylo Ren defeated them to claim a Sith wayfinder that had belonged to Vader. This artifact led him to the legendary Sith world of Exegol.