Darth Blight's Sith Empire was an organization, which lasted from and started at 4,577 BBY and ended at 4,566 BBY. It was ended by the Old Republic. Darth Blight was the founder, and it consisted of many Sith. In 4,566 BBY, Darth Blight, sent a strike team (consisting of only twenty Sith) to Yavin IV and they encountered CloneSaber and Sebarian. They fought, and were defeated. Ten were decapitated, five stabbed and five slashed in half. Blight fought Sebarian and CloneSaber and lost and was severely injured. Sebarian cracked his head during the fight, but lived.