A bronze statue of Genghis Khan located in central London. Once he achieved infamy, he became known as Genghis Khan, or “universal ruler.”3. Legend says Genghis Khan and his armies killed more than 40 million people. An illustration of Kublai Khan, Genghis Khan's grandson, being presented a letter by Pope Gregory X by Marco Polo and his brothers. Genghis Khan probably would have hated the Genghis Khan statue.