Board Thread:Speculation House/@comment-35941743-20190304195312/@comment-27234079-20190702050230

73.Anon.52 wrote: Vader wouldn't know that According to the Sith Code book, he personally delivered Sidious a series of journal entries from Darth Malgus detailing the latter's attempt and plans for making a planet killer weapon, and added onto it with his own notes on how to improve the weapon. He was pretty fully aware of that in legends.