The renegade Sith Lords Maul and Savage Opress traveled to Mustafar with their new allies Death Watch to convince the Black Sun to join them in conquering Mandalore. After they refused Maul's proposition, Opress beheaded most of the Black Sun's leadership with a throw of his double-bladed lightsaber, and the sole surviving crime Vigo, Ziton Moj, agreed to supply Death Watch.