There were three central characters: Correll voiced Andy Brown while Gosden voiced both Amos and the Kingfish. The majority of the scenes were dialogues between either Andy and Amos or Andy and Kingfish. Amos and Kingfish rarely appeared together. Since Correll and Gosden voiced virtually all of the parts, the female characters, such as Ruby Taylor, Kingfish's wife Sapphire, and Andy's various girlfriends, did not initially appear as voiced characters, but entered plots through discussions among the male characters. Prior to 1931, when Madame Queen (then voiced by Gosden) took the witness stand in her breach-of-promise lawsuit against Andy, a feminine voice was heard only once. Beginning in 1935, actresses began voicing the female characters, and after the program converted to a weekly situation-comedy in 1943, other actors were recruited for some of the supporting male roles. However, Correll and Gosden continued to voice the three central characters on radio until the series ended in 1960.