David Davidovich

Fellow billionaire Roman Abramovich's much lower-profile right-hand man first worked with him at Runicom, an offshore holding. Was also main oil trader at Abramovich's Sibneft, which was sold in 2005 to Gazprom. Owns piece of Millhouse LLC, Abramovich's investment vehicle, with assets in metals, commercial real estate and cash. In 2010 he bought Abramovich's coal mines in Chukotka and sold them to Canadian company Kinross Gold. He also controls Prodo, the second biggest meat and meat products processing company in Russia and the biggest source of his fortune.