You were born a Viltrumite in the planet Viltrum, which is the main empire of many universes and planets. You’ve proven yourself worthy after being able to defeat and kill many other Viltrumites who were doing the same mission as you. Eventually you become a Viltrum officer assigned to a planet to prepare and welcome it to the Viltrum empire. Those who fight back. Kill them. Those who surrender will be able to join. ( You get to choose your planet, and your own name and gender.. have fun:). )