Dolores Quantero
Cliff Roberts
Carlos Manning
Mel Donovan
Maria Martinez
Insp. Grogan
Romero (Nightclub Owner) [Chs. 3, 9]
George Tomkins
Kidnapper Norton / Streetsweeper Blake / MineThug Dow / BombThug Lyons [Chs. 2, 5, 7, 10]
Thug Murphy / Police Officer Angus [Chs. 7, 8] / Pete (Truck Theft Thug / Bar Thug [Chs. 1, 9, 11]
Rollins - Killer [Ch. 6]
R. J. Riggs (Bomb Maker) [Ch. 10]
Morris Kelso (Artist-Thug) [Ch. 11]
Ned Gray (Thug) [Ch. 4]
Lippy Monroe (Thug) [Ch. 5]
Woods Thug Moody / MineThug Eddie / Truck Thug Zarco [Chs. 4, 7, 12]
Art Warehouse Thug (uncredited)