character - Theodore Parker (voice)

character - Daniel

character - Roger Laver

character - Bruce

character - Gabriel Robinson

character - Theodore Roosevelt

character - John Wilson

character - Self (archive footage)

character - Moody Burkhart

character - Self (archive footage)

character - Dermot

character - Cameron Brogden

character - Derek

character - John

character - Lieutenant Colonel Owens

character - Matt Davidson

character - Adem

character - Thomas Gregson

character - Sandy

character - Henry Brown

character - Kevin Sweeney

character - Martin B.

character - Charlie Wright

character - William Rainsferd

character - Richard Baker

character - Ulysses S. Grant

character - Steven Abbate

character - Professor George Oswald

character - Alec

character - Narrator

character - Prof. Porter

character - Nicholas Holden

character - Self - Host

character - Gerry Moore

character - Charlie Hamilton

character - Jacob Reiser

character - Matt Furey

character - Frank Brennan

character - Henry Dawes

character - Kerry Max Cook

character - Daniel Webster

character - John Berry

character - Henry

character - CEO

character - David Roby

character - Frank Nitzche

character - Detective Scofield

character - Douglas Thomas

character - Commodore Alfred Lind

character - Joe F. Brown

character - Clint Windsor

character - Harry Vardon

character - Tom Guthrie

character - William Franklin

character - Gen. Benedict Arnold

character - Nick Barron

character - Joe O'Malley

character - Jeremy Bell (segment "The Passenger List")

character - Tom Bledsoe

character - Miles Hendon

character - Paul McCartney

character - Brian

character - John Miller

character - Ben Nicholson

character - Burton Lowe

character - Kieran O'Day

character - Paul Cooper

character - Gary Hallet

character - Henry Morton Stanley

character - Annibal Ramirez / Carlos

character - Self

character - Seth Warner

character - Harry Roland

character - Richmond

character - (segment "John Boorman")

character - Prof. David Ash

character - Don Day

character - Maurice Woulfe (voice)

character - Alfred Ludlow

character - Cap. Robert Walton

character - (voice)

character - Maurice Woulfe (voice)

character - Detective John Hallstrom

character - Benjamin 'Benny' Pearl

character - Bob Finkbine

character - Tom Casey

character - Martin Quarrier

character - James McEwan / Jonathan McEwan

character - Jules Kaye

character - Nick

character - Frankie McGuinness

character - Sam Paxton

character - Self - Guest

character - Crusoe

character - Richard "Stick" Montgomery

character - Chris Keller

character - Felipe Mendoza

character - Michael Pierson

character - Dez

character - Johnny Rourke

character - Self

character - Tom Guthrie

character - Father MacGabbhan

character - Barnet Rosset

character - Self