Simplify the following text for a Grade 6 native English-speaking person.
Original: Kevin Jeffrey Clash ( born September 17 , 1960 ) is an American voice actor and puppeteer whose characters include Elmo , Baby Sinclair , Clifford , Splinter and Hoots the Owl .
Simplified: Kevin Clash ( born September 17 , 1960 ) is a puppeteer and voice actor .