Were there too many or too few returning characters in Lost in Space? I suppose the answer depends on the individual fan. Dr. Smith was originally intended as a recurring but not permanent character. It was owing to his runaway popularity with fans in the first season that he was made a regular on the show. Irwin Allen reputedly intended to add the recurring character of a talking purple llama in the fourth season. Personally, I think it might have been nice to see Jimmy Hapgood again, or revisit some of the other one-off guests on the show, but the possibilities of bringing back these characters never seems to have been seriously entertained by either the series’ regular writers or Allen himself.