John Meston and refined the main characters who would populate his and Macdonnell's radio portrayal of Dodge. Jeff Spain soon became United States Marshal Matt Dillon, and veteran voice actor William Conrad was chosen by Meston, Macdonnell, and two other network audition judges to be the lawman and the series' central figure. Other seasoned actors filled the needed regular supporting roles, including Parley Baer as Marshal Dillon's trusty assistant Chester Proudfoot, Howard McNear as Dr. Charles "Doc" Adams, and Georgia Ellis, whose role in the series' early episodes would quickly evolve into the saloon "hostess" Kitty Russell. "Gunsmoke" was broadcast for the
Matt Dillon (Gunsmoke) television successes. Conrad, in particular, would continue to portray Matt on the radio series until it ended in 1961. He would also go on to direct a number of television programs (including two episodes of "Gunsmoke"), to become "The Narrator" for the original television series of "The Fugitive" (1963–1967) and star in three television series: "Cannon" (1971–1976), "Jake and the Fat Man" (1987–1992), and the short-lived 1981 series "Nero Wolfe". In the 1988 action classic, "Die Hard", Hans Gruber (Alan Rickman), asks John McClane (Bruce Willis) whom he is trying to imitate with his heroics, and he mentions Marshal Dillon