Genghis Khan

Genghis Khan was a Mongol military leader and the grandfather of Kublai Khan. (TV: "Assassin at Peking")

According to one account, the First Doctor once encountered Genghis Khan. (PROSE: Time and Relative) According to another account, the First Doctor claimed to Genghis' grandson that he had heard of Genghis but hadn't met him. (TV: "Assassin at Peking")

The Seventh Doctor claimed to have delivered Genghis Khan, describing him as "a sweet baby." (PROSE: Tragedy Day)

When claimed he wanted to rule people "for their own good", the Third Doctor wondered if he had heard Genghis Khan say the same thing. (TV: The Dæmons)

once lied and told Chang Lee that the Doctor had been Genghis Khan. (TV: Doctor Who)

According to both the Sixth (AUDIO: City of Spires) and Ninth Doctors, (TV: Rose) the TARDIS once withstood an attack from the hordes of the Genghis Khan.