as Mortimer Duke

as Arthur Selwyn

as Art Selwyn

as Shadow (voice)

as Tibor Czerny

as Father Clemente

as Dr. Wallace Wrightwood

as Commander Taylor

as Phil O'Neil (Credits) / Phil 'Mac' McNeil

as Ricardo Quintana

as Charlie Dwyer

as Jimmy Hall

as Larry Martin / Baron Manuel Duarte

as Harry Aldrich

as Alexander Graham Bell

as Henry Van Cleve

as Bingo Harper

as Mike Connors

as Gino

as Martin J. Canavan

as Richard W. Courtland

as John Hathaway

as 'Mitch' Mitchell

as Hiram Stephen Maxim

as Jack O'Leary

as Ken Douglas

as Edward Shelley

as Chris Bern

as D'Artagnan

as Bob Harris

as Joseph Jefferson 'Joe' Parker

as Tracy Egan

as Alessandro

as Stephen Foster

as Senator Alex S. Simon

as Kenneth Harvey

as Edward Solomon

as Dr. Rudi Imre

as G. Paul Siebriese

as Otis Ramsey

as Fern Stobbs

as John Gayle

as Lloyd Lloyd

as Lew Marsh

as Col. Flanders

as Joe Grange

as Dwight Dawson

as George Macrae

as Alexander Graham Bell (archive footage)

as David Brassard Jr.

as Dick Court

as Pedro Sullivan

as Don Ameche

as Karl Freyman / Mario Signarelli

as Justin Travers

as Self (archiveFootage)

as Mortimer Duke / Homeless Man #2 (uncredited)

as Host/Ringmaster

as Frank Aherne

as Peter Nostrand

as Grandpa Harry

as Self (archive footage)

as Jake

as Don Ameche

as Self

as (archive footage)

as Armand Beller