Norman "Red" Ryan, (8 July 1895 – 23 May 1936) was a notorious gangster in early 20th century Toronto, Ontario. He came from an Irish Catholic upbringing and he took to the streets as a young man to engage in crime.

Charles Howard Schmid Jr. (July 8, 1942 – March 30, 1975), also known as the Pied Piper of Tucson, was an American serial killer whose crimes were detailed by journalist Don Moser in an article featured in the March 4, 1966, issue of Life magazine.

Vincenzo Casillo (Italian pronunciation: [vinˈtʃɛntso kaˈzillo], Neapolitan: [kaˈsillə]; July 8, 1942 – January 29, 1983) was an Italian Camorrista and the second in command of the Nuova Camorra Organizzata, a Camorra organization in Naples. His nickname was 'o Nirone ("the Big Black one").

Charles Dean O'Banion (July 8, 1892 – November 10, 1924) was an American mobster who was the main rival of Johnny Torrio and Al Capone during the brutal Chicago bootlegging wars of the 1920s. The newspapers of his day made him better known as Dion O'Banion, although he never went by that first name.

Jonathan Wild, also spelled Wilde (1682 or 1683 – 24 May 1725), was an English thief-taker and a major figure in London's criminal underworld, notable for operating on both sides of the law, posing as a public-spirited vigilante entitled the "Thief-Taker General". He simultaneously ran a significant criminal empire, and used his crimefighting role to remove rivals and launder the proceeds of his own crimes.