10. Tamerlane the Great
This 14th-century conqueror of Western, Central and South Asia was known as Timur, and he considered himself to be the descended from Genghis Khan. He was one of the most horrifying rulers, and his rule was followed by cruelty and terror which is responsible for destroying millions of people. He had many ways of murdering, such as forcing people to jump from cliffs and mountains or beheading them eventually. He was also the one to order thousands of people to die of slow suffocation, and he enjoyed making towers out of skulls. Generally, 15 to 20 million people died because of him.
