Black Sun fortress

During the time of the Clone Wars, the Black Sun crime syndicate had a fortress located on Mustafar, a planet in the Outer Rim known for being volcanic. Xomit Grunseit, who was the head of the Black Sun group, kept a group of guards, with Ziton Moj serving as his Captain of the Guard, in charge of them.

In 20 BBY, Darth Maul and Savage Opress, who were Sith Lords, found the base, along with Pre Vizsla and his Death Watch soldiers; this event is known as when it was discovered. Maul, who was putting together a Shadow Collective, tried to get the Black Sun to join him. Grunseit said no, leading Opress to kill him. At the same time, Moj decided to side with Maul.