In Greek mythology, the Giants or Gigantes (, Gigantes, singular Gigas) were a race of great strength and aggression, though not necessarily of great size, known for the Gigantomachy (Gigantomachia), their battle with the Olympian gods. According to Hesiod, the Giants were the offspring of Gaia (Earth), born from the blood that fell when Uranus (Sky) was castrated by their Titan son Cronus.