Billy Shears as Paul McCartney

In 1966 Paul McCartney died (probably killed) and replaced with a man who's first name is obviously Bill (William) and who's last name is debated. Usually Shepherd and Campbell are the most referenced. Shears is believed to come from Shakespeare, taking a famous Williams and cutting down the name to have a new name but to still reference the name it intends, both pointing to "William", aka Billy, as well as the fact William Shakespeare was a made up character, who has become accepted as a historic figure.