as Tibor
as Johnny Barrett (archive footage) (uncredited)
as Farmer Brown (voice)(1 ep)
as Wellington
as Kendal's Father(1 ep)
as Sheriff Hatch
as Chambers
as Sahm-Ir
as Mr. Watson
as Steve Curan
as Ross Gilmore
as Senator Weyburn(1 ep)
as King Leonidas
as Jesse Keller(12 eps)
as Dr. Halverson(5 eps)
as Hull(1 ep)
as Dr. Paul M. Chapman
as Silver Cloud(1 ep)
as Avery Porter
as George Noland(1 ep)
as Mike Palmer(1 ep)
as Harry Cordel(1 ep)
as Nick Barkley(112 eps)
as Wiley Bondesen(1 ep)
as Johnny Barrett
as Dr. Ted Dietrich(1 ep)
as Senator Orville(1 ep)
as Steve Curan
as Ted Grover
as Jess Carver(1 ep)
as Lafe Harkness(1 ep)
as Stephen Tremayne
as Russian Officer
as Frank Brennan
as Mark Goodwin(1 ep)
as Ward Bannister(1 ep)
as Bob Mooney
as Chip
as Clay Culhane(44 eps)
as Ben Miranda (uncredited)
as Hale Connors(1 ep)
as Theodore Roosevelt(1 ep)
as Jim Brandt (uncredited)(1 ep)
as Stacey Gouge (uncredited)
as Sam Dixon(1 ep)
as Sheriff Dan Trevor(1 ep)
as Doc Holliday(2 eps)
as Clay Elliot(1 ep)
as William Sherwood(1 ep)
as Peter Warren(1 ep)
as Lt. John Stickney(1 ep)
as Theodore Roosevelt(1 ep)
as Frank Weaver(1 ep)
as Sundance Kid(1 ep)
as Marshal(1 ep)
as Roy Bancroft(1 ep)
as Sheriff Matt Kilgore(1 ep)
as Fly Hoyt(1 ep)
as Jubal(1 ep)