Via Screenrant.com:

Rogue One made Darth Vader’s castle part of the new canon, and now its origin story will be revealed thanks to Star Wars comics. The original trilogy of films never even suggested that the servant and apprentice of Emperor Palpatine would have a home or base of operations. But as extended universe mythology and series-inspired artwork took shape, the idea of a “fortress” just as chilling as Vader took root.

The idea was folded into the new, Disney-owned Star Wars canon with Rogue One: A Star Wars Story. Connecting to the prequel films that saw Anakin Skywalker physically transformed into Darth Vader, the Mustafar castle’s location clued fans in to a larger Force mystery. And soon, the Darth Vader comic series will explain the castle’s origins – and how it became the one place in the galaxy Darth Vader might actually call his “home.”

The promise of that coming explanation comes from writer Charles Soule directly, who along with artist Giuseppe Camuncoli have proven that some of Vader’s best stories have yet to be told. And after setting in place the new origin of Darth Vader’s lightsaber, and how Vader can survive underwater, Soule took to Twitter to reveal that “the next big arc in the Darth Vader series is called FORTRESS VADER. It’s about how he got this” along with artwork of the now-canonical black castle.

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