Darth Mandalore, formerly called Darth Necris, was a Sith Lord who survived the destruction of the Sith Triumvirate, and, after working through various crime circles, came to control Mandalore and wage war against the Republic of Supreme Chancellor Yhar-Moalu. After an initial victory on Onderon, Mandalore was killed in a dogfight above the planet, ending his brief uprising and plunging the Mandalorians into further debt and chaos.