'Oppenheimer' Cast: Meet the A-List Actors Starring in the Christopher Nolan Film

As one of the year's most highly-anticipated films, Christopher Nolan’s Oppenheimer almost needs no introduction. Based on the biography American Prometheus about J. Robert Oppenheimer, the theoretical physicist who developed the first nuclear weapons during World War II, the epic drama explores his life and his work. Peaky Blinders’ Cillian Murphy plays the titular character, but he’s just one name in the star-studded cast. Alongside young actors like Florence Pugh, Dylan Arnold and Jack Quaid are icons like Robert Downey Jr., Emily Blunt and Matt Damon.Christopher Nolan's 'Oppenheimer': Everything to Know In fact, Downey Jr. described Oppenheimer as the “best film I’ve ever been in” at the London premiere on July 13, adding, “I cannot wait for you all to experience it." “This is what a summer blockbuster, when I was growing up, used to be," he continued. "It just kind of, like, changed your life. But again, you know, it’s why Chris Nolan is who he is.” From their past roles to person...