De Niro attended PS 41, a public elementary school in Manhattan, through the sixth grade. He then went to Elisabeth Irwin High School, the private upper school of the Little Red School House, for the seventh and eighth grades. He was accepted into the High School of Music and Art for the ninth grade, but only attended for a short time before transferring to a public junior high school. De Niro began high school at the private McBurney School and later attended the private Rhodes Preparatory School, although he graduated from neither. Nicknamed "Bobby Milk" for his pallor, De Niro hung out with a group of street kids as a youth in Little Italy, some of whom have remained his lifelong friends. His stage debut was at age 10, when he played the Cowardly Lion in a school production of The Wizard of Oz. Along with finding relief from shyness through performing, he was also fixated by cinema, and he dropped out of high school at age 16 to pursue acting. He studied acting at HB Studio, the Stella Adler Conservatory, as well as Lee Strasberg's Actors Studio.
Michael Sylvester Gardenzio Stallone   ( / s t ə ˈ l oʊ n / ; born July 6, 1946)  is an American actor and filmmaker. He is well known for his Hollywood action roles, including boxer Rocky Balboa , the title character of the Rocky series' seven films from 1976 to 2015; soldier John Rambo from the four Rambo films, released between 1982 and 2008; and Barney Ross in the three The Expendables films from 2010 to 2014. He wrote or co-wrote most of the 14 films in all three franchises, and directed many of the films.