Darth Vuli who was formerly Jascar Lorn was the son of Grand Moff Vexel Lorn who commanded the Deep Core and was killed during the Battle of Byss, though his Older Brother took command of the Grand Moffing it was instead the path of Revenge that Vuli sought, joining the Imperial Army and seeking a means destroy the Rebellion caught Vader's eye who decided to train the Force Sensitive.