Kerwin Mathews

Jack

Judi Meredith

Princess Elaine

Torin Thatcher

Pendragon

Walter Burke

Gama

Don Beddoe

Imp

Barry Kelley

Sigurd

Dayton Lummis

King Mark

Anna Lee

Lady Constance

Robert Gist

Scottish Captain

Tudor Owen

Chancellor

Ken Mayer

Boatswain

Stuart Holmes

Celebration Guest (uncredited)

Jack Mower

Nobleman (uncredited)

Monty O'Grady

Nobleman (uncredited)

Bert Stevens

Celebration Guest (uncredited)

Helen Wallace

Jack's Mother (uncredited)