Martin P. Robinson
Martin P. Robinson is a puppeteer for the Jim Henson Company. He also built, designed, and performed the puppets for Little Shop of Horrors. He is best known for his work on Sesame Street, having performed the characters of Telly Monster, Mrs. Grouch , Slimey the Worm, Mr. Snuffleupagus, Oscars niece Irvine, and Shelley the Turtle on the show for overyears. He also performed the characters Riff the Cat and Clef the dad on Allegras Window, and was an animatronic puppeteer for Leonardo in Teenage Mutant Ninja Turtles. He is the puppeteer responsible for training the puppeteers on Sesame Tree. He also voiced The Cat in the Hat in the second season of The Wubbulous World of Dr. Seuss.
Robinson was born on March 9, 1954 in Dearborn, Michigan and later graduated from Brookfield East High School in Brookfield, Wisconsin, a suburb of Milwaukee.
Source: Wikipedia