Name	Known for
Joe Jones Robert Oppenheimer Robert Oppenheimer See fewer	Spies, Lies and the Superbomb (2007)
Shannon Whirry Kitty Oppenheimer Kitty Oppenheimer See fewer	Middle Men (2009)
Mike Lawler Edward Teller Edward Teller See fewer	Spies, Lies and the Superbomb (2007)
Slade Hall Stan Ulam Stan Ulam See fewer	Haunted Airplane (2009)
Ben Tyler Dean Acheson Dean Acheson See fewer	Spies, Lies and the Superbomb (2007)
Marco Hofschneider Klaus Fuchs Klaus Fuchs See fewer	The Island of Dr. Moreau (1996)
Andrew Scott Andrei Sakarov Andrei Sakarov See fewer	All of Us Strangers (2023)
Georg Nikolloff Russian Official (as Georg Nikoloff) Russian Official (as Georg Nikoloff) See fewer	The Theory of Everything (2014)
Gergo Danka Igor Kurchatov Igor Kurchatov See fewer	Eastern Promises (2007)
Dennis Ford Adm. Lewis Struass Adm. Lewis Struass See fewer	Everything's Eventual (2009)
Stephen Earnhart Hack 1 Hack 1 See fewer	Lord of Illusions (1995)
Roy Hunt Hack 2 Hack 2 See fewer	Spies, Lies and the Superbomb (2007)
Stephanie Likes Make-up Girl Make-up Girl See fewer	Jolene (2008)
Gerrard McArthur Henry Arnold Henry Arnold See fewer	Silent Witness (1996)
Noah Lee Margetts Robert Lamphere Robert Lamphere See fewer	Batman Begins (2005)
Boris Isarov Beria Beria See fewer	Superman IV: The Quest for Peace (1987)
Dick Baniszewski Russian General Russian General See fewer	Spies, Lies and the Superbomb (2007)
Gene Ganssle Harry Gold Harry Gold See fewer	Postmarked (2016)
Cliff Everett Smith Robb (as Cliff Baldwin Smith) Robb (as Cliff Baldwin Smith) See fewer	Senoa (2017)
Steve Gresser Witness Isidor Rabi Witness Isidor Rabi See fewer	Forget About It (2006)
Mark Gluckman Witness Vannevar Bush Witness Vannevar Bush See fewer	Spies, Lies and the Superbomb (2007)
William E. Johnson III Fbi agent Fbi agent See fewer	The Kingdom (2007)
Jeffry O'Brien Reporter Reporter See fewer	American Bomber (2007)
Sean Pertwee Narrator Narrator See fewer	Equilibrium (2002)
Richard Meek Army Official (uncredited) Army Official (uncredited) See fewer	Take Me Home Tonight (2011)