Tol Sivron

Tol Sivron initially served as a member of the Head Clan in Twi'lek society. When chosen, it was expected that he would serve in the Head Clan for many years. However, about one year afterwards, another member of the Head Clan fell while inspecting a project, and impaled himself. Sivron and the three other members of the Head Clan were then cast out. Sivron convinced the three other members to pool their resources, and try to eke out a living in one of the nearby uninhabited caves.

While the other former Head Clan members slept, Sivron murdered all of them. He then took their supplies, and set out in a trek across the desert. Eventually he came upon an Imperial refueling station on Ryloth. He then met a young commander named Tarkin. Tarkin soon found that Sivron was an excellent manager of the complex business arrangements that Tarkin had.

Eventually, Tarkin named Tol Sivron to head up the research facilities at the Maw Installation. For over ten years, Sivron ran the facility that produced such weapons as the Death Star and Sun Crusher.

When the facility was invaded by New Republic forces, Sivron escaped with the other scientists on board the Death Star prototype that was in orbit around the facility. He took the weapon to Kessel, and used the superlaser to destroy the planet's moon, which proved the effectiveness of the weapon. He returned to the Maw Installation to destroy it rather than allow it to fall into Rebel hands. Sivron died when the Death Star prototype fell into one of the nearby black holes.