Mr. Wild’s success in the film led to the Sid and Marty Kroft children’s television series “H.R. Pufnstuf,” in which he played Jimmy, a boy living in a magical, vividly colored land peopled by large puppets and fantastical creatures. The series was very successful and spawned a 1970 film, “Pufnstuf,” in which he again played Jimmy. At this time, he also began a recording career.