This, in my opinion, is one of THE worst MST3K episodes. The movie was so bad in many ways, that it was hard for Joel and the bots to even riff on it, let alone for them to be very funny riffs. The only thing good to say about Mad Monster is that the host segments were very improved compared to episodes 1 and 2, especially the host segment where Servo falls in love. I would suggest to skip this movie and only watch it if you want to watch the whole complete series, otherwise it's not worth it, except the host segments.
See also
Awards | FAQ | User Ratings | External Reviews | Metacritic Reviews