Richard Hunt, who, in Jon Stone's words, joined the Muppets as a "wild-eyed 18-year-old and grew into a master puppeteer and inspired teacher", created Gladys the Cow, Forgetful Jones, Don Music, and the construction worker Sully.[121] Telly Monster was performed by Brian Muehl; Marty Robinson took over the role in 1984.[122] Frank Oz created Cookie Monster. Matt Robinson created the "controversial" (as Davis called him) character Roosevelt Franklin.[note 18] Fran Brill, the first female puppeteer for the Muppets, joined the Henson organization in 1970,[123] and originated the character Prairie Dawn. In 1975, Henson created The Muppet Show, which was filmed and produced in London; Henson brought many of the Muppet performers with him, so opportunities opened up for new performers and puppets to appear on Sesame Street.[124]