Walton once had long hair and a shaggy beard. Chewbacca has hair all over his body. Walton has a son named Luke. Chewbacca has a friend named Luke. Walton was terrific with a basketball.

Lucas is on record as saying that Chewbacca is based on his pet (via ... haired but he was not Lucas' Alaskan Malamute, who was named Indiana.