Bree Talzin

Bree Talzin was a Dathomirian witch during the Clone Wars. But before the Clone Wars she was a Sith Lord. But resigned 20 years before the Clone Wars. After Order 66, Emporer Palpatine had summoned her to the Senate building, but it was a trap. Palpatine ga summoned her to Coruscaunt for her own execution, or she knew the Sith Lord's weekness and thought that she was too dangerous to be kept alive. So Sidious impaled her in the stomach, killing her on the spot.