Pol Pot was a Cambodian communist revolutionary who ruled as Prime Minister of Democratic Kampuchea from 1976 to 1979. He led the Khmer Rouge, which perpetrated the Cambodian genocide, transforming the country into a one-party communist state.
This is based on winning 3 head-to-head matchups with other famous people, but also losing 18 head-to-head matchups.
Most recently Pol Pot lost a matchup to Mads Mikkelsen (#567) voted by someone from United States.