In Greek mythology, the creature known to have been born from the blood of Uranus is the Furies, or Erinyes. According to myth, when Uranus was castrated by his son Cronus, his blood fell to the earth, birthing these vengeful deities. The Furies represent vengeance and are tasked with pursuing wrongdoers, particularly those who commit familial crimes. Their presence underscores the themes of justice and retribution within Greek myths, often serving as a symbol of the inescapable consequences of one's actions. They are feared spirits who enforce moral order and ensure that justice is served among mortals.