Characters played by Strongheart the Dog
Strongheart
Characters played by Bob Custer
Boston Blackie
Characters played by Corliss Palmer
Sylvia Markham
Characters played by Rosemary Cooper
Necklace Nellie
Characters played by Coit Albertson
Denver Dan
Characters played by William Worthington
John Markham
Characters played by Florence Wix
Mrs. John Markham
Characters played by J.P. Lockney
Rob Nichols
Characters played by Violet Palmer
Annette