The Expendables 2 was the only one of the four Expendables movies that actually accomplished what Sylvester Stallone set out to do with the all-star action franchise. For years, Stallone was best known for headlining two major franchises: the Rocky franchise, about an underdog boxer becoming a world champion, and the Rambo franchise, about a Vietnam War veteran reckoning with the fact that the only thing he knows how to do is kill. But in 2010, Stallone added a third franchise to the roster: The Expendables, about a band of aging mercenaries secretly making the world a better place.