Stanley Brock's formative years were spent residing on East 14th Street in Manhattan's lower east side, a locale that would later influence his comedic endeavors. Prior to his solo career, he shared the stage with a female partner, collectively known as Stan and Nan, and together they traversed the Upstate New York comedy circuit, performing one-night stands in the Catskill Mountains, affectionately referred to as the "Borscht Belt" due to its abundance of holiday camps catering to the Jewish community from the New York City/Tri-State area.
In addition to his comedic pursuits, Brock supplemented his income by working in a clerical capacity for a Manhattan-based Refrigeration and Air Conditioner Company during the mid-1960s to early 1970s. It was during this period that he would frequently test his comedic material on his fellow employees, honing his craft and preparing for his eventual transition to the West Coast.
Brock's success in Hollywood was marked by his versatility in playing character roles in both film and television. He established himself as a semi-regular presence on the popular 1975 series Barney Miller, showcasing his range and comedic chops to a wider audience.