I think I know who the heavy set guy was that Gerry mentioned. I just watched "Target: Jimmy Olsen" and that heavy set guy was in this episode at the beginning...when Clouse is following Jimmy at the beginning to nab him...the heavy set guy stands up and begins talking to Jimmy. When they get back to the planet, the guy says, "I'll have the prints for you right after lunch Jimmy" and Jimmy says "Thanks Hank". - You won't find this scene in the scripts -it's not there, but it is in the episode.
So there's another one for you - Hank! The problem is that I don't really know what his job was. I think he was also in "Madam X". He was the guy arguing with a woman about Lex Luthor. He says "If you ask me Superman isn't the hero he used to be. Lex Luthor may have had his faults but Superman should have saved him." The woman he's talking to says "Are you nuts? Luthor was a low life, scum-sucking criminal. How could anyone like that guy?...Oh, sorry Lois." Tee hee.
