Izzy Einstein and Moe Smith
Isidor "Izzy" Einstein (1880–1938) and Moe W. Smith (1887–1960) were United States federal police officers, agents of the U.S. Prohibition Unit, who achieved the most arrests and convictions during the first years of the alcohol prohibition era (1920–1925). They were known nationally for successfully shutting down illegal speakeasies and for using disguises in their work.
Source: Wikipedia — Izzy Einstein and Moe Smith (CC BY-SA 4.0)