The "Piggy" name came from one of two brothers who were childhood classmates of Freleng's, nicknamed "Porky" and "Piggy".
Piggy was given a light, Caucasian-like color with distinguishing birthmarks. The character appeared as a gluttonous child in a large family of pigs in "At Your Service Madame" (which gives his full name as Piggy Hamhock), where he leads his fellow siblings in foiling a bum's attempt to rob their mother. A year later he starred in "Pigs Is Pigs" in which his gluttony would take center stage. After that he was discarded with his character traits transferred for a time to Porky Pig.
Piggy appears as a fat, pink pig who has distinguishing brown-colored birthmarks on both his butt and right ear. Piggy didn't wear any clothes, save for a red bow tie around his neck.
- Beck, Jerry. Audio commentary for "I Haven't Got a Hat" on the Warner Bros. DVD set Looney Tunes Golden Collection, Volume 3. (2005) citing Freleng's autobiography.
- Looney Tunes and Merrie Melodies: A Complete Illustrated Guide to the Warner Bros. Cartoons. Henry Holt and Company. ISBN 0-8050-0894-2