I used to work with somebody who was descended from Genghis Khan (via his son Hulagu, who was an ancestor of the Romanian/Ottoman administrator/diplomat/scholar/musician Dimitrie Cantemir, who was one of her ancestors).

When I last heard from her she was making wooden toys at an eco-village in Italy, which doesn't sound a lot like an expression of the raping and pillaging gene.

It seems Genghis has more known descendants than any other other identified human being in history.