Naddist

The Naddists were a Sith cult on Onderon that worshiped the fallen Dark Lord Freedon Nadd. They built the Ancient Proving Grounds for trials where competitors would fight to the death to curry favor with the Dark Lord. Many of them were capable of using ancient Sith magic. Two such individuals were King Ommin and his wife Queen Amanoa. They were largely eliminated following the Freedon Nadd Uprising.