The most famous oligarchs of the Putin era include Roman Abramovich, Alexander Abramov, Oleg Deripaska, Mikhail Prokhorov, Alisher Usmanov, German Khan, Viktor Vekselberg, Leonid Mikhelson, Vagit Alekperov, Mikhail Fridman, Vladimir Potanin, Pyotr Aven, and Vitaly Malkin.