Tweety is a fictional yellow canary created by Bob Clampett in the 1942 short A Tale of Two Kitties. Sylvester is Tweety's rival cat character who tries to catch him. Bugs Bunny is a fictional rabbit character in the Looney Tunes series who was named the greatest cartoon character of all time by TV Guide in 2002. Porky Pig is a sweety pig character designed by animator Bob Clampett who was the first character created by the studio to draw audiences based on his star power.