J. Robert Oppenheimer

Self (archive footage)

Christopher Nolan

Self - Writer / Director, "Oppenheimer"

Jon Else

Self - Filmmaker, "The Day After Trinity"

Kai Bird

Self - Co-Author, "American Prometheus"

Bill Nye

Self - Science Educator

Martin J. Sherwin

Self - Co-Author, "American Prometheus" (voice)

Michio Kaku

Self - Theoretical Physicist

Leslie Groves

Self - Director, Manhattan Project (voice) (archive sound)

Edward Teller

Self - Theoretical Physicist (archive footage)

Eleanor Roosevelt

Self (archive footage)

Judy Woodruff

Self (voice) (archive sound)

Adolf Hitler

Self (archive footage)

Vladimir Putin

Self (archive footage)

Xi Jinping

Self (archive footage)

Albert Einstein

Self (archive footage)