12. Attila the Hun
With his nickname the Scourge of God, Attila, the number 12 on our list of most evil people in history ruled the Huns from 434 to 453 in the cruelest and barbaric way that you can imagine. His main goal was to destroy the Roman Empire and basically, everything that would stand on his was in becoming the ruler of the world. The best portrayal of his cruelty is actually the fact that after being refused from Saint Ursula, whom he wanted to marry, he killed her and 11,000 people, even drinking their blood. Besides that, he killed thousands of Romans, but also his two sons.
