What infamous historical figure was known for bathing in the blood of her victims?

The historical figure known for bathing in the blood of her victims is Countess Elizabeth Báthory. She was a 16th-century Hungarian noblewoman who is often cited as one of history's most infamous female serial killers. Báthory reportedly believed that bathing in the blood of young women would maintain her youth and beauty, which has led to many legends and stories surrounding her life.

These accounts, although somewhat sensationalized by later interpretations, reflect the themes of power, immortality, and the female body associated with vampire lore and the concept of the undead. Báthory's notoriety has made her a figure of fascination in literature, art, and popular culture concerning themes of violence and immortality.

The other figures listed do not hold similar reputations or legends connected to bathing in blood. Marie Antoinette is primarily known for her role during the French Revolution, Catherine the Great was an influential Russian empress known for her reforms and political cunning, and Cleopatra is famous for her relationships with Roman leaders and her reign in ancient Egypt. None of these figures are associated with the gruesome practices attributed to Báthory.