J. Robert Oppenheimer
Role: Self (archive footage)
Ellen Bradbury Reid
Role: Self - Daughter of Los Alamos Scientist
Christopher Nolan
Role: Self - Writer / Director, "Oppenheimer"
Jon Else
Role: Self - Filmmaker, "The Day After Trinity"
Kai Bird
Role: Self - Co-Author, "American Prometheus"
Bill Nye
Role: Self - Science Educator
Richard Rhodes
Role: Self - Author, "The Making of the Atomic Bomb"
Mareena Robinson Snowden
Role: Self - Nuclear Security Expert
Alan B. Carr
Role: Self - Senior Historian, Los Alamos National Laboratory
Gregg Herken
Role: Self - Author, "Brotherhood of the Bomb"
Jennet Conant
Role: Self - Author, "109 East Palace"
David Eisenbach
Role: Self - History Professor, Columbia University
Alex Wellerstein
Role: Self - Nuclear Historian
Martin J. Sherwin
Role: Self - Co-Author, "American Prometheus" (voice)
Michio Kaku
Role: Self - Theoretical Physicist
Leslie Groves
Role: Self - Director, Manhattan Project (voice) (archive sound)
Charles Oppenheimer
Role: Self - Grandson
Robert Christy
Role: Self - Theoretical Physicist (voice) (archive sound)
Robert S. Norris
Role: Self - Author, "Racing for the Bomb"
Hideko Tamura
Role: Self - Hiroshima Survivor (Age 10)
Roy Glauber
Role: Self - Scientist, Manhattan Project (voice) (archive sound)
Edward Teller
Role: Self - Theoretical Physicist (archive footage)
Eleanor Roosevelt
Role: Self (archive footage)
Judy Woodruff
Role: Self (voice) (archive sound)
Adolf Hitler
Role: Self (archive footage)
Vladimir Putin
Role: Self (archive footage)
Xi Jinping
Role: Self (archive footage)
Albert Einstein
Role: Self (archive footage)
