The story goes that Chief Engineer Argyle’s actor Biff Yeager was eager for a full time role on the show. It had been hinted at that he could become part of the main cast if fan response was positive. Yeager was apparently a bit too zealous asking friends and family to write in to the studio. They received a wave of support for the character before an episode featuring Argyle had ever aired, and his role was subsequently quietly written off of the show.