Conquest

Conquest is portrayed as a completely irredeemable sadist who was born thousands of years ago on Viltrum. Being raised on the planet of cruel conquerors likely darkened his heart from a young age. Conquest fought in and survived the Viltrumite Civil War. Conquest was then sent to “assimilate” planets and was apparently the most successful of all the Viltrumites, never failing once. It is also implied that he committed countless horrific atrocities single-handedly during this time.