Darth Barad-Dur was a Sith Lord of the Third Sith Empire. His real name was Zahrin Harmon, brother of Adam Harmon and uncle of Oladam Harmon I. He served in the Galactic Imperial Military in the Fleet for a couple years, rising to the rank of Admiral. When Oladam Harmon I came to dominate the Galactic Empire, Zahrin was stripped and discharged from the military. He commandeered the HMSS Darth Vader and its crew and went on a prolonged trip throughout the galaxy. Over time, Zahrin devolved into a man ridden with bitterness and hatred.