Jeffrey Hunter

as Captain Christopher Pike (archive footage)(1 ep)

as Self (archive footage)

as Captain Christopher Pike (archive footage)

as (archive footage)

as Frank Mannata

as Billy Hayes

as Count Enrico

as Joe Collins

as Lt. (J.G.) Lyman P. Jones

as Captain Benteen

as Joe Novak

as Technical Adviser

as Garver Logan

as Justin Power

as Emmet Crown(1 ep)

as Capt. Christopher Pike (archive footage)(1 ep)

as Francis Jerome(1 ep)

as Ralph Stuart(1 ep)

as Jeremy Thrallkill(1 ep)

as Jim Grayam

as (voice) (uncredited)

as Christopher Pike

as Joaquín Murrieta

as Roark Logan(1 ep)

as Timothy Higgins

as Fred Girard(1 ep)

as Temple Lea Houston(26 eps)

as Lacer

as Sgt. Dane(1 ep)

as Sgt. (later Lt.) John H. Fuller

as George R. Tweed

as Harold(1 ep)

as Jesus

as Matt Jameson

as Fred Morrow

as Edward "Jocko" Townsend(1 ep)

as Guy Gabaldon

as Lt. Tom Cantrell

as Self

as Adam Caulfield

as Himself (uncredited)

as Sgt. Nico Kantaylis

as Captain Bill Ranson

as David Martin

as Joe Mundy

as Frank James

as Bless Keough

as William A. Fuller

as Martin Pawley

as Thad Anderson

as Gordon Grant

as Matuwir

as Dick Cannock(1 ep)

as Owen Brown

as Little Dog

as Johnny Colt

as Self(1 ep)

as Wesley Jerome Penn(1 ep)

as Phil Aubry(1 ep)

as Self(1 ep)

as Prince Haidi

as Signalman Andrew 'Canada' Brown

as Bill Ainslee

as Ben Tyler

as Bob Grayson

as Edward J. (Ed) Miller

as Chad Carnes

as Danny Klempner

as The Kid

as Pappy Creighton

as Third Plebian(uncredited)