Fat Man and Little Boy

Fat Man and Little Boy Cast

52 cast members · 27 with popularity data

Full Cast

Sorted by Buzz Score · June 2, 2026

Michael Merriman

Gen. Leslie R. Groves

Natasha Richardson

Kathleen Robinson

John C. McGinley

Richard Schoenfield

Melrose Hayden Barry

Kitty Oppenheimer

Alan Oppenheimer

J. Robert Oppenheimer

Whitney Ashbridge

#11,754 overall

#15,464 overall

#15,572 overall

Dr. Kenneth Whiteside

#17,363 overall

#21,672 overall

#22,537 overall

#23,859 overall

Mary Pat Gleason

#24,719 overall

Brehon Somervell

#26,978 overall

#30,252 overall

Walker Edmiston

#30,229 overall

Oakridge Doctor

#32,935 overall

#50,409 overall

#54,909 overall

Krzysztof Pieczyński

#54,728 overall

George Kistiakowsky

#62,165 overall

Steven Baigelman

#63,411 overall

Michael Brockman

William "Deke" Parsons

Seth Neddermeyer

Donald MacKechnie

Frank Benettieri Jr.

Roger Cubicciotti

Frank Oppenheimer

Franco Cutietta

Robert Peter Gale

Dr. Louis Hempelman

Wesley Harrison

Peter Oppenheimer

Peter Oppenheimer

David C. Parnes

Harold McDonald

Bill Rubenstein

Ken Strausbaugh

Observation Officer

Walter Sullivan

Dennis Talmudge

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