Dhahabi Gwahl: The Parasite War

From publisher blurb: The Dhahabi Gwal, or Golden Ghouls are a race of parasitic conqueors inspired by such races as the Goa'uld from Stargate SG1 and the Necrons from Warhammer 40,000. They move from system to system with their undead servitors, posing as gods to less advanced races and overpowering others. Their goal: total dominion of all life.