Peter Tork noticed much about his Monkees audition was unusual or comical, so he joined the antics by walking into a wall when coming through a door. This got him noticed by the sitcom's producers, but also led to his getting cast as the "dummy" of the group. Anyone who knew Peter (or listened to him for more than a minute) knew he was far from it, and the Monkees parodied the typecasting during their second season, and in the movie
Head (1968). Tork was also the most musically versatile member, playing a dozen or more instruments.