Bernard Deyries was never quite able to duplicate the success of The Mysterious Cities of Gold. He only produced one other dud in the form of Rainbow Brite. While MASK lasted for quite a while, it represented the typical one-dimensionalness of action cartoons of the time. You could pick much better action shows even during this bleak time frame of the 80s, like The Real Ghostbusters. MASK had a "Thunderbirds" feel but lacked the supermarionette show's sense of depth and drama. The insistence that the little kid and his idiotic robot sidekick always help out the professionals of MASK by sneaking out was plain annoying. Even long time fans would agree that the show went south when in the third season, the show's creators placed a bigger emphasis on a racing theme simply to market the new toy format at the time.