The Viltrum Empire is the faction of the Viltrumites.The leader of the Viltrum Empire ruled the entire planet. Argall had been Emperor until his death by Thaedus. Desperate and in disarray, the Viltrumites battled each other, killing the weak of the planet. In order to build a perfect society after the disarray, The survivors of Viltrum Empire rebuilt the civilization from the ashes and began conquering planets for hundreds of years until The Scourge Virus infected them. After the disarray of Argall's death, Thragg was named the Grand Regent of the Viltrum Empire and was tasked with finding a successor for Argall.