Kevin Clash is the puppeteer who developed and performed Elmo, turning a minor background character into the most recognisable Muppet of his generation.
He started by building
Clash made his own puppets as a child in Baltimore, taught himself from what he could see on television, and was performing locally while still at school. That path — building first, performing on your own material, learning by doing it badly and then less badly — is exactly the route most people reading this are on.
How he got in
Kermit Love met him while working on The Great Space Coaster and urged him to apply to Sesame Street. Clash joined the company in 1979.
What he did with Elmo
The puppet existed before he took it on and had no defined personality. Clash gave it the falsetto, the third-person speech and the specific physical vocabulary — the wriggle, the giggle, the total absence of guile — that made the character work. It is one of the clearest demonstrations in puppetry that a character lives in performance rather than in construction.
The technical craft
Elmo is performed high, in a sustained falsetto, with constant small movement. That combination is physically demanding in three separate ways at once, and Clash sustained it across decades of production.
Beyond Sesame Street
he performed Baby Sinclair on Dinosaurs, Splinter in the Teenage Mutant Ninja Turtles films, and Clifford on Muppets Tonight, and worked extensively as a puppet captain and director.
He continues to work in puppetry, and remains one of the most technically accomplished hand puppet performers the form has produced.