Onslow Stevens

as Lugal

as Flint Johnson

as Brig. Gen. Robert O'Brien

as Dr. Franz Edelmann

as Ben Goddard

as Jack Lestrade

as Emir Hassan

as Dr. Walters

as Dr. Matt Higgins

as Sheriff Adler

as J. Stanley McMasters

as Hearn

as Col. Daniel Morgan Benedict II

as John P. Tedesco

as Frank Faber

as Judge Dana Culver

as Igor Braun

as Cmdr. James McLean

as Mr. Lassiter

as Col. Ethan Waters

as Johnny Achilles

as Guy Polli

as Holden

as Dr. W.L. Janz, M.D.

as Field

as Judge Williams

as George Harland

as Chief Agent Alec Conrad

as Dr. Jim Borden

as Sheriff Eggly

as Self (archive footage)

as Roger Morrow

as Dr. John Kendrick

as Nate Girard

as Professor Brandt

as Joshua Davis

as Aramis

as Grover Johnson

as Counsellor Doone

as Capt. Jim Martin

as John Grayson

as Tom Hannegan

as Joe Baldwin

as Barnard

as Rudolph Von Preissing

as Brock Danvers

as Sir Gerald 'Jerry' Markham

as Dan Adams

as Walter

as Jack Hanway

as Lyn Durland

as Gregg Jackson

as Francis Scott Graham

as Tom Deaver

as Ellis

as Dan 'Ace' Cartwright / Henry Mathews

as Gen. Nathan Keller

as Captain Allen

as Scott Varnum

as Sam Houston

as Hannibal Pardee

as Lt. Dearborn

as Stanley Stanfield

as Dr. Frank Norton

as Mr. Nickerson

as Bob Dunbar

as Dr. Joel Becker

as Gen. de la Garance

as Bob Stevens

as Henchman (uncredited)

as Mr. Wendi

as Commander D. B. McGraw

as Sam Bellows

as Pecos Kane

as Don Phillips

as Steve Nichols, alias Steve Cummings

as Prof. John Applegate

as Tom Crosby

as Frederick Keller

as Lawrence Vail

as Dr. Franz Edlemann (archive footage)

as Dr. Franz Edlemann (archive footage)

as Walter Van Runkle

as Carl Cutler

as Jeffrey 'Jeff' Powell

as John Barrett

as John Hawley

as Richard Evans

as Attorney Palmer

as Calvin Brown

as Harry Rogers

as Henry

as Dr. Roy Stark

as Jayda McQueen

as Mr. Shaw

as Dr. Foster

as Prince Michael

as Farraday

as Carl Hughes

as Jack Morgan

as (archive footage)

as Sidney Lennox