Radik Tagirovich Tagirov (Russian: Радик Тагирович Тагиров, Tatar: Радик Таһир улы Таһиров; born May 1982), dubbed the Volga Maniac, is a Russian serial killer who murdered 31 elderly women in and around the republic of Tatarstan between 2011 and 2012. In March 2024, he was sentenced to life in prison.

Max Gufler (1 May 1918 – 9 August 1966) was an Austrian serial killer who was convicted of killing four women. He was suspected of up to 18 murders.

Sergey Valerievich Lozovoi (Russian: Сергей Валерьевич Лозово́й; born May 1, 1965), known as The Giant (Russian: Великан), is a Russian criminal and serial killer who committed a series of brutal murders, for which he was wanted as a fugitive for a long time.

José Efraín Ríos Montt (Spanish: [efɾaˈin ˈrios ˈmont]; 16 June 1926 – 1 April 2018) was a Guatemalan military officer who served as de facto President of Guatemala from 1982 to 1983. His brief tenure as chief executive was one of the bloodiest periods in the long-running Guatemalan Civil War.