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) (Milburn Stone), and saloon-keeper Kitty Russell (Amanda Blake). These three individuals were among Matt's few real friends because he knew that he could trust them in any situation. In the television version, Chester was eventually replaced by Festus Haggen (Ken Curtis), an uneducated country-boy, but savvy plainsman who ultimately became a badge-wearing Deputy U.S. Marshal; a position that always eluded Chester. In both the radio and television versions, the exact nature of Matt's relationship with Kitty Russell was deliberately kept somewhat vague. Kitty was portrayed by Georgia Ellis in the radio version and by Amanda Blake in the television version.