Robert John Downey, Jr.  is an American actor who made his screen debut at the age of five, appearing in his father Robert Downey, Sr.'s film Pound. He has appeared in roles associated with the Brat Pack, such as Less Than Zero and Weird Science. Other films he has starred in include Air America, Soapdish, and Natural Born Killers. He starred as Charlie Chaplin, the title character in the 1992 film Chaplin, earning him a nomination for the Academy Award for Best Actor.