Cisco & Pancho were two of my favorite characters. The series was filmed in color but shown only in black & white. Duncan had been in movies for years, appearing in the serial Spy Smasher & countless westerns. Unfortunately, he was not Latino, his real name was Renaldo Duncan. Leo, on the other hand was from Mexico & proud of it. He was a character actor for many years & was 70 years old when the series ended.