Love, who became Clash's mentor, after seeing Love featured in an episode of the documentary Call It Macaroni. In 1979, on Love's recommendation, Clash appeared as Cookie Monster in the Sesame Street float during the Macy's Thanksgiving Day Parade and met Jim Henson, who later became his boss, mentor, and good friend. When he was 19, Clash became a puppeteer for Captain Kangaroo, initially as a guest performer, in which he also made occasional on-camera appearances. The producers of Captain Kangaroo used some of Clash's puppet creations for the show. In 1984, Clash had to turn down Henson's offer to work on his film The Dark Crystal because he was working on two TV shows at the same time, Captain Kangaroo and Love's syndicated program The Great Space Coaster, in which he was producer for the first time. Career Captain Kangaroo was canceled in 1984 after 29 seasons, and Great Space Coaster ended, freeing up Clash to work on projects with Henson such as the film Labyrinth and Sesame Street. Clash started working at Sesame Street for ten episodes in 1983, mostly performing nondescript, stand-in puppets known as Anything Muppets. Some of his earliest characters included the saxophone-playing Hoots the Owl (based on Louis Armstrong), the infant Baby Natasha, and inventor Dr. Nobel Price. After 1985, Elmo, a furry red monster, became his main character. Three puppeteers, including Richard Hunt, had performed Elmo previously, but it was Clash's development, with a falsetto voice, that established the character. He based Elmo's character on the preschool children that attended his mother's daycare in Baltimore and upon his own personality and the personality of his parents. Clash followed the advice of fellow puppeteer Frank Oz, who told Clash to always "find one special hook" for each character. Clash decided that the central characteristic for Elmo should be that he "should represent love". After the height of Elmo's popularity, especially the "Tickle Me Elmo" craze in 1996, Clash's responsibilities at Sesame Street increased. He recruited, auditioned, and trained its puppeteers, and became the senior Muppet coordinator, a writer, director, and co-producer of the "Elmo's World" segment of the show. Clash worked with and mentored the puppeteers of Sesame Street's international co-productions. He found working with the co-productions "a lot of fun" and "very rewarding". He worked on the 1985 feature film Follow That Bird. In 2007, he was promoted to senior creative adviser for