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
Gunsmoke versions of the same pilot episode titled "Mark Dillon Goes to Gouge Eye" are in the archives with two different actors, Rye Billsbury and Howard Culver, playing Marshal "Mark" Dillon as the lead, not yet played by Conrad. Conrad was one of the last actors to audition for the role of Marshal Dillon. With a resonantly powerful and distinctive voice, Conrad was already one of radio's busiest actors. Though Meston championed him, Macdonnell thought Conrad might be overexposed. During his audition, however, Conrad won over Macdonnell after reading only a few lines. Dillon, as portrayed by Conrad, was a lonely,