 In his DVD audio commentary for "The Mysterons", Gerry Anderson recalled that as it was the first episode to be filmed, "everything had to be perfect" on a technical level.The title "The Mysterons" does not appear on screen; however, the opening shot features a caption that reads "Mars2068 A.D." While some sources consider this to be the title, the episode is referred to in all production documentation as "The Mysterons".Chris Bentley rejects "Mars2068 A.D." as the title, noting that the title captions in the series' other episodes use a different Microgramma font.