The Avengers are a team of superheroes and the protagonists of the Marvel Cinematic Universe (MCU) media franchise, based on the eponymous team from Marvel Comics created by Stan Lee and Jack Kirby in 1963. Founded by S.H.I.E.L.D. director Nick Fury, the team is a United States–based organization composed primarily of superpowered and gifted individuals, described as "Earth's Mightiest Heroes", who are committed to the world's protection from a variety of threats.