Charles Arthur Floyd, AKA Pretty Boy, was bestowed the “Public Enemy Number One” title upon Dillinger’s death, largely because he was wanted for the murder of two policemen and two FBI agents in an event known as the Kansas City Massacre.
Though his name isn't as widely known as that of Hickok, Billy The Kid or Doc Holliday, the greatest of all the old west gunfighters was Ben Thompson. Gunman, gambler, soldier on both sides of the border and Austin lawman, his life and death are the stuff of legend. "It is doubtful if in his time there was another man living who equalled him with a pistol in a life-and-death struggle" -Bat Masterson
Amelia Elizabeth Dyer née Hobley (1838 – 10 June 1896) was the most prolific baby farm murderer of Victorian England. She was tried and hanged for one murder, but there is little doubt she was responsible for many more similar deaths—possibly 400 or more—over a period of perhaps twenty years.
Kate "Ma" Barker (born Arizona Donnie Clark; October 8, 1873 – January 16, 1935) was the mother of several criminals who ran the Barker gang from the "public enemy era", when the exploits of gangs of criminals in the U.S. Midwest gripped the American people and press.