Cliff Holden, alias William Harrah (played by Dean Jagger) is a protagonist in C-Man.
Doc Spencer (played by John Carradine) appears in C-Man.
Owney Shor (played by Harry Landers) appears in C-Man.
Customs Inspector Brandon (played by Walter Vaughan) appears in C-Man.
Kathe van Bourne (played by Lottie Elwen) appears in C-Man.
Matty Royal (played by Rene Paul) appears in C-Man.
Lydia Brundage (played by Edith Atwater) appears in C-Man.
Minnie Hoffman (played by Adelaide Klein) appears in C-Man.
