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Fat Man and Little Boy
Cast
52 cast members · 20 with popularity data
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Sorted by Buzz Score · April 23, 2026
1
Paul Newman
Gen. Leslie R. Groves
5.2
#481 overall
2
John C. McGinley
Richard Schoenfield
4.1
#726 overall
3
Natasha Richardson
Jean Tatlock
3.2
#1,158 overall
4
Laura Dern
Kathleen Robinson
2.9
#1,392 overall
5
John Cusack
Michael Merriman
2.3
#1,921 overall
6
Bonnie Bedelia
Kitty Oppenheimer
1.2
#3,936 overall
7
Alan Oppenheimer
(voice)
1.1
#4,438 overall
8
Clark Gregg
Douglas Panton
0.7
#6,003 overall
9
Dwight Schultz
J. Robert Oppenheimer
0.7
#6,516 overall
10
Fred Thompson
Melrose Hayden Barry
0.6
#7,245 overall
11
Todd Field
Robert Wilson
0.5
#8,445 overall
12
Ed Lauter
Whitney Ashbridge
0.3
#10,408 overall
13
Del Close
Dr. Kenneth Whiteside
0.2
#14,879 overall
14
James Eckhouse
Robert Harper
0.2
#14,997 overall
15
Jim True-Frost
Donald Hornig
0.2
#15,329 overall
16
Mary Pat Gleason
Dora Welsh
0.1
#19,238 overall
17
Allan Corduner
Franz Goethe
0.1
#19,749 overall
18
Walker Edmiston
(voice)
0.1
#20,205 overall
19
Ron Vawter
Jamie Latrobe
0.1
#22,242 overall
20
Arthur Holden
Oakridge Doctor
0.0
#25,759 overall
21
Ron Frazier
Peter de Silva
—
22
Michael Brockman
William "Deke" Parsons
—
23
John Considine
Robert Tuckson
—
24
Joe D'Angerio
Seth Neddermeyer
—
25
Jon DeVries
Johnny Mount
—
26
Péter Halász
George Kistiakowsky
—
27
Gerald Hiken
Leo Szilard
—
28
Donald MacKechnie
James Tuck
—
29
Madison Mason
Boris Pash
—
30
Krzysztof Pieczyński
Otto Frisch
—
31
Don Pugsley
Bronston
—
32
Logan Ramsey
Brehon Somervell
—
33
Barry Yourgrau
Edward Teller
—
34
Marek Alboszta
Scientist
—
35
Steven Baigelman
Dr. Avenell
—
36
Frank Benettieri Jr.
Messenger
—
37
Roger Cubicciotti
Frank Oppenheimer
—
38
Franco Cutietta
Enrico Fermi
—
39
Robert Peter Gale
Dr. Louis Hempelman
—
40
Wesley Harrison
Peter Oppenheimer
—
41
Brent Harrison
Peter Oppenheimer
—
42
Tom McFarlane
Scientist
—
43
David C. Parnes
Raincoat Man
—
44
Allen Poirson
Harold McDonald
—
45
David Politzer
Robert Serber
—
46
Bill Rubenstein
Times Reporter
—
47
Ken Strausbaugh
Observation Officer
—
48
Walter Sullivan
Henry Stimson
—
49
Brian Wandell
Dennis Talmudge
—
50
John Williams
Mack Stoddard
—
51
Matthew Faison
(voice)
—
52
Stan Jones
(voice)
—
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