Ieldis was a Sith Lord of the Old Sith Empire who was responsible for the creation of the Crucible, a massive organization that created standing armies from the refugees created during war. During his life, he created a Sith sword known as the Sword of Ieldis as well as a helm known as the Helm of Ieldis. Ieldis eventually died, but even after his death, the Crucible lived on.