Ronald Previte (October 9, 1943 – August 21, 2017) was an American corrupt police officer for the Philadelphia Police Department and a member of and an informant against the Philadelphia crime family of the Italian-American Mafia.

Takahiro Shiraishi (白石隆浩, Shiraishi Takahiro; 9 October 1990 – 27 June 2025) was a Japanese serial killer and rapist. He was also known as the Twitter Killer or the Zama Suicide Pact Killer, which he was labeled as in most media reports at the time of his sentencing.

Kazimierz Polus (10 September 1929 – 15 March 1985) was a Polish serial killer and pedophile who killed two young boys and an adult man.

John Stompanato Jr. (October 10, 1925 – April 4, 1958) was a United States Marine and gangster who became a bodyguard and enforcer for the gangster Mickey Cohen.