Looney Tunes Baseball Card 511

The character was designed by animator Bob Clampett and introduced in the short I Haven't Got a Hat (first released on March 2, 1935), directed by Friz Freleng. Studio head Leon Schlesinger suggested that Freleng do a cartoon version of the popular Our Gang films. Porky only has a minor role in the film, but the fat little stuttering pig quickly became popular. Porky's name came from two brothers who were childhood classmates of Freleng's, nicknamed "Porky" and "Piggy".
Since Hugh Harman and Rudolf Ising had left the studio in 1933, taking the studio's star character Bosko with them, Looney Tunes had been kept afloat by cartoons featuring the bland Buddy. Porky's introduction ushered Buddy out the door and pointed to things to come. Tex Avery was hired to the studio in 1935, and his film Gold Diggers of '49 reused much of the cast from I Haven't Got a Hat, albeit in wildly different roles. Porky transitioned from a shy little boy to an immensely fat adult. Though he was still in a supporting role, Porky got most of the laughs. The directors realized they had a star on their hands.

For nine years, Porky ended a cartoon by bursting through a bass drum, saying "Th-Th-Th-Th-Th-That's all, folks!"
Porky shared his stutter with the voice actor who originally played him, Joe Dougherty, who actually did have a stuttering problem. Because Dougherty could not control his stutter, however, production costs became too high and his recording sessions took hours. The versatile Mel Blanc replaced Dougherty in 1937. Blanc continued the stutter; however, it was harnessed for a more precise comedic effect (such as stumbling over a simple word only to substitute a longer word without difficulty). This is parodied in A Connecticut Rabbit in King Arthur's Court, where Bugs Bunny struggles to pronounce the word "porcupine", which Porky pronounces with no trouble.
Porky's Duck Hunt was released in 1937, and Blanc officially became the permanent voice of Porky until his death in 1989. In later interviews, Blanc often made the claim that he intended Porky's stutter to be suggestive of the grunting of actual pigs (although other cartoon pigs do not have such a severe stuttering problem). Porky is currently voiced by Bob Bergen.