James Arness Marshal Matt Dillion Actor Milburn Stone Dr. Galen "Doc" Adams Actor Amanda Blake Kitty Russell Actor Ken Curtis Festus Guest Star Roy Roberts Harry Botkin Guest Star James Nusser Louie Pheeters Guest Star Glenn Strange Sam Guest Star James Whitmore Jim Forbes Guest Star David Ladd Brian Forbes Guest Star Peter Whitney Jason Holt Guest Star Julio Medina Pedro Guest Star Fred Scollay Clint Fisher Guest Star Gilman Rankin Hank Purvis Guest Star Berkeley Harris Farmer Guest Star Philip Leacock Producer Gilbert Ralston Writer Scott Hunt Writer Beth Keele Writer Marc Daniels Director