The Burning Legion is a vast army of demons in the lore of the Warcraft universe. They are led by the dark titan Sargeras, who seeks to destroy all life and bring about chaos. The Legion is known for its relentless invasions of worlds, aiming to corrupt and conquer them. The Burning Legion consists of various demon types, including Eredar, Dreadlords, and Felguards. They often use powerful magic and dark rituals to achieve their goals. Throughout the Warcraft series, the Legion has been a central antagonist, posing a significant threat to the inhabitants of Azeroth and beyond.