We are the Big Bang Theory Gang. We come from an American television sitcom created by Chuck Lorre and Bill Prady, both of whom served as executive producers on the series, along with Steven Molaro, all of whom also served as head writers. It premiered on CBS on September 24, 2007, and concluded on May 16, 2019, having broadcast 279 episodes over 12 seasons. We are Sheldon Cooper, Leonard Hofstadter, Penny Hofstadter, Amy Cooper, Howard Wolowitz, Raj Koothrappali, and Bernadette Wolowitz.