Dolus, a Human Moff of the Sith Empire, was a male who existed in the era of the Galactic War. He, along with Moff Graham, received an invitation from a fellow Moff, Valion Pyron, in 3640 BBY. The invitation was to witness the Silencer being tested aboard the Doombringer, a Harrower-class dreadnought. When Pyron presented Lord Kallig as the individual who brought the Silencer to completion, Dolus expressed initial doubt, given Kallig's adversarial relationship with Dark Council member Darth Thanaton. Prior to the test, Captain Joris from [Carnage], the flagship of Darth Achelon, put in a request for assistance. Graham then proposed the destruction of Achelon, which did not sit well with Dolus. Following the Silencer's successful trial, Dolus shifted his stance and pledged his support to Kallig.