Darth Nyx, who was born Marcellus Petreius was a Human male who was at different stages of his life, a pilot, a Death Watch member, and a "Sith". He at first worked in shipping for the Republic, but after becoming frustrated that the Seperatists weren't "being punished", he quit and joined Death Watch, which he worked with until the end of the war. Having discovered his own Force-sensitivity, he left Death Watch and traveled to Korriban where he encountered Krayt, who agreed to take him on as his apprentice.