Characters played by Mark DeNicola
Fessenden's Assistant
Characters played by Steve Herringer
Narrator
Characters played by Christopher O'Neill
Officer John Larson
Characters played by Evgeny Akimov
Konstantin Feoktistov
Characters played by Ken Alder
Self
Characters played by Ron Basch
Leo Szilard
Characters played by Trevor Baylis
Self
Characters played by Adam Bradley
Theodore Case
Characters played by Logan Brown
Colin Pitchfork
Characters played by Ryan Browne
DeForest's Assistant
Characters played by Morgan Burke
Self
Characters played by Brian Scott Carleton
Trevor Bayless
Characters played by Gail Cooper
Gail Cooper
Characters played by Rick Cordeiro
Boss of Walkie Talkie inventor
Characters played by Tim Crouch
Self
Characters played by Jennifer De Lucia
Woman
Characters played by Michael Dean
Self
Characters played by Tim Dowling
Self
Characters played by Frank Eiscorn
Self
Characters played by Leo Enticknap
Self
Characters played by James Fanizza
Willis Carrier
Characters played by David Emanuel Faria
Seaman
Characters played by Gary Frost
Self
Characters played by Matthew Galliford
Hugo Riesenfeld
Characters played by Tim Gasko
Self
Characters played by Jane Gitschier
Self
Characters played by Paul Giurgeu
Young Boy
Characters played by Chris Hadfield
[no data]
Characters played by Katie Hafner
Self
Characters played by Shane Harbinson
KIng Camp Gillette
Characters played by Jim Hill
NASA Scientist
Characters played by Philippe Kahn
Self
Characters played by Philip Kennedy
Self
Characters played by William Lanouette
Self
Characters played by Andy Malone
Bob Kahn
Characters played by Andre Millard
Self
Characters played by Tarun Mullick
Self
Characters played by David Owen
Self
Characters played by Ted Powers
Lee DeForest
Characters played by Tomasso Rivellini
Self
Characters played by Micheal Schack
Police Officer
Characters played by Sergei Sikorsky
Self
Characters played by Norman Singer
Breathalizer Segment
Drunk Driver
Characters played by Katie Uhlmann
Nurse N. Dipadova
Characters played by Scott Vancea
Criminal
Characters played by Michael G. Wilmot
Chester Carlson
Characters played by Robert Zimmerman
Self
Characters played by Craig Arnold
Rudy Krolopp
Characters played by Ben Bain
Zuse Co-Worker
Characters played by Terry C. Barna
John T. Thompson
Characters played by Judy Strite Campbell
Self
Characters played by Julie Cohn
Joy Marshall
Characters played by James Fleming
Self
Characters played by Rayvon Fouche
Self
Characters played by Arthur Fry
Self
Characters played by Tracie Hill
Self
Characters played by Warwick Jacobs
Self
Characters played by Terry Jansen
Sailor #1
Characters played by Thomas Kovacs
Sergei Korolev
Characters played by Michael Bennett Leroux
Patterson's Assistant
Characters played by Paul Levinson
Self
Characters played by Colin Murphy
Ralph Baer
Characters played by John Nathan
Self
Characters played by Terry Novak
Victor Wouk
Characters played by James E. Oberg
Self
Characters played by Janice Peterson
Self
Characters played by Loren Reuter
Self
Characters played by Arcade Riley
Whittle's Assistant
Characters played by Paul Rivers
Harry Wexler
Characters played by Rob Robbins
Self
Characters played by Kenneth Rolt
Self
Characters played by Jordan Roth
Steve Sasson
Characters played by Rick Smith
Self
Characters played by Josh Vokey
Cover Son
Characters played by Ryan Whittal
Crash Test Dummy Model
Characters played by Daniel Wilson
Self
Characters played by Johny Wilson
Self
Characters played by Jordan Wouk
Self
Characters played by Sergey Shpakovsky
Russian Scientist