Death Eaters are a group of dark wizards and witches who serve Voldemort, the main antagonist in the Harry Potter series. They are known for their belief in blood purity and their desire to conquer the wizarding world, often using fear and violence to achieve their goals. Led by Voldemort, the Death Eaters wear distinctive dark robes and masks to conceal their identities. They are responsible for numerous crimes, including murder and torture, and are feared by both the magical and non-magical communities. Their actions play a significant role in the overarching conflict of the series.