is an American puppeteer, puppet builder, writer, director, and producer, who has taken over performing most of Richard Hunt
's Muppet characters, including Scooter
Outside Disney, he is a core performer on Sesame Street, where he performs characters, such as Baby Bear and Cookie Monster as of 2001 - although, Frank Oz, Cookie Monster's original performer, returns to the street to voice Cookie Monster a few times a year, along with both Bert and Grover.
He also performed Peter Cratchit in The Muppet Christmas Carol and Miss Poggy in The Muppets. He is also the current voice performer for Beaker succeeding from Steve Whitmire respectively.