Roman Arkadyevich Abramovich is a Russian oligarch and politician. He is the former owner of Chelsea, a Premier League football club in London, England, and is the primary owner of the private investment company Millhouse. He has Russian, Israeli and Portuguese citizenship.

Oleg Vladimirovich Deripaska is a Russian oligarch and billionaire. Deripaska enriched himself on previously state-owned assets that were privatized in the aftermath of the collapse of the Soviet Union. He is the founder of Basic Element, one of Russia's largest industrial groups, and Volnoe Delo, Russia's largest charitable foundation. He was the president of En+ Group, a Russian energy company, and headed United Company Rusal, the second-largest aluminum company in the world, until he quit both roles in 2018.