Batu Khan - Wikipedia. Batu Khan (c. 1205–1255), also known as Sain Khan (Mongolian: Good Khan) and Tsar Batu, was a Mongol ruler and founder of the Golden Horde, a division of the Mongol Empire.Batu was a son of Jochi and grandson of Genghis Khan.His ulus was the chief state of the Golden Horde, which ruled Rus', Volga Bulgaria, Cumania, and the Caucasus for around 250 years, …