Paul Fix, Duke and Superman

Above, a studio portrait of actor Paul Fix.

One of the most active character actors during his time was Paul Fix. Fix appeared in numerous movies and television shows during his career.

From Wikipedia:

Peter Paul Fix (March 13, 1901 – October 14, 1983) was an American film and television character actor who was best known for his work in Westerns. Fix appeared in more than 100 movies and dozens of television shows over a 56-year career between 1925 and 1981. Fix was best known for portraying Marshal Micah Torrance, opposite Chuck Connors's character in The Rifleman from 1958 to 1963. He later appeared with Connors in the 1966 Western film Ride Beyond Vengeance and The Time Tunnel episode, "The Sky is Falling".

Following the war, Fix became a busy character actor, who got his start in local productions in New York. By the 1920s, he had moved to Hollywood, and performed in the first of almost 350 movie and television appearances. In the 1930s, he became friends with John Wayne. He was Wayne's acting coach and eventually appeared as a featured player in about 27 of Wayne's films.

Fix appeared with John Wayne in such movies as Tall In The Saddle (he also co-wrote the screenplay), Wake of the Red Witch, Hondo, Red River, El Dorado, The Sons of Katie Elder and The Undefeated among others. 

Above, Paul Fix (center) with John Wayne and Robert Mitchum in El Dorado.

Fix appeared in two episodes of the Adventures of Superman, starring George Reeves. In 1951, he appeared in "Czar of the Underworld" and in 1953, he appeared in "Semi-Private Eye".

Above, Paul Fix (left) after having his head clunked by Superman in "Czar of the Underworld".

It is interesting to note that it took Adventures of Superman a while to secure a major sponsor (Kellogg's eventually stepped in), the show did attract top-notch character actors such as Paul Fix.