All Cast

J. Robert Oppenheimer

J. Robert Oppenheimer

Self (archive footage)

Ellen Bradbury Reid

Ellen Bradbury Reid

Self - Daughter of Los Alamos Scientist

Christopher Nolan

Christopher Nolan

Self - Writer / Director, "Oppenheimer"

Jon Else

Jon Else

Self - Filmmaker, "The Day After Trinity"

Kai Bird

Kai Bird

Self - Co-Author, "American Prometheus"

Bill Nye

Bill Nye

Self - Science Educator

Richard Rhodes

Richard Rhodes

Self - Author, "The Making of the Atomic Bomb"

Mareena Robinson Snowden

Mareena Robinson Snowden

Self - Nuclear Security Expert

Alan B. Carr

Alan B. Carr

Self - Senior Historian, Los Alamos National Laboratory

Gregg Herken

Gregg Herken

Self - Author, "Brotherhood of the Bomb"

Jennet Conant

Jennet Conant

Self - Author, "109 East Palace"

David Eisenbach

David Eisenbach

Self - History Professor, Columbia University

Alex Wellerstein

Alex Wellerstein

Self - Nuclear Historian

Martin J. Sherwin

Martin J. Sherwin

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

Michio Kaku

Michio Kaku

Self - Theoretical Physicist

Leslie Groves

Leslie Groves

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

Charles Oppenheimer

Charles Oppenheimer

Self - Grandson

Robert Christy

Robert Christy

Self - Theoretical Physicist (voice) (archive sound)

Robert S. Norris

Robert S. Norris

Self - Author, "Racing for the Bomb"

Hideko Tamura

Hideko Tamura

Self - Hiroshima Survivor (Age 10)

Roy Glauber

Roy Glauber

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

Edward Teller

Edward Teller

Self - Theoretical Physicist (archive footage)

Eleanor Roosevelt

Eleanor Roosevelt

Self (archive footage)

Judy Woodruff

Judy Woodruff

Self (voice) (archive sound)

Adolf Hitler

Adolf Hitler

Self (archive footage)

Vladimir Putin

Vladimir Putin

Self (archive footage)

Xi Jinping

Xi Jinping

Self (archive footage)

Albert Einstein

Albert Einstein

Self (archive footage)