Mitch Brenner
H. George Wells
Sir David Karfrey
Lee Allen
Steve Donegin
Daddy-O
Cpl. Gwilym
Pongo (voice)
Curry
Bruce Templeton
Brian Ian "Boysie" Oakes
Self
Grady
Palmer
Nick Carraway
Charles
Les Mangrum
Major Walter Gerber
Mike Mitchell
Mike Harper
Winston Churchill
Chuka
Garwood B. Jones
Travis McGee
Scobie Malone
John Brodie Evans (as Rodney Taylor)
Mike Randall
Marko
Pirro
Herbert Ellis
Ross Taford
Peter McDermott
Captain Jack Savage
Ralph Halloran
Col. Hollis Farr
John Cassidy
Frank Brand
General Sorenson
Sir Francis Drake
'Black Jack' Bouvier
Bill King
Jason Carlyle
Lem Sutter
Mr. Payatta
Commander W.P. Anderson
Christopher Tauling
Gen. Willoughby
Lieutenant Bob Robson
Peter Reaney
Brynie MacKay
Trader Horn
Jack Bailey
Jack Janiero
Ted Kitteridge
Doc
Israel Hands
Shamus McCoy
George McLeay
Supt. Bob McLaine
Hank Brackett
Clint Tolliver
Himself / Narrator / H.G. Welles
Marian Casey
Edward Adeane
Pongo (voice) (archive footage)
Billy Patrick
Tom Dempsey
Clancy
Paul Duveen
Gordon Cahill
Anthony Fouche
Sam Tipton
Coach
Clegg Forbes
Lavender
Mr. Gilbert
Boyd Harland
Jed Harper
Evan Thorpe
Inspector Rory Lanahan
Fred Gauman
Baxter
Mike Harper (archive footage) (uncredited)
Tommy Scarbrough
Jim
Frank Agretti