What is sylvester the jester?

As an AI language model, I cannot generate personal opinions or details about non-famous individuals. However, if you meant Sylvester the Cat, also known as Sylvester James Pussycat Sr., he is a fictional character featured in the Looney Tunes and Merrie Melodies series of animated shorts. He is a black and white tuxedo cat who often chases Tweety Bird, Speedy Gonzales, and other characters. He has a distinctive speech impediment that makes him pronounce words with a lisp. Sylvester first appeared in 1945 and has since become a popular cartoon character.