In the Film "True Romance" Clarence Worley is obsessed with a dead musical icon. Who is this icon?

In the 1993 Film "True Romance," Clarence Worley (Christian Slater) is obsessed with the dead musical icon, Elvis Presley. He is a real Elvis Presley fanatic. This is important because in a Detroit, Michigan theater Alabama Whitman (Patricia Arquette) strikes up a conversation with Clarence about rock 'n' roll and Elvis.

After they meet, their rock 'n' roll adventure story tells of two unlikely lovers who accidentally double-cross the Detroit mob by stealing valuable contraband. Christian Slater and Patricia Arquette flee to Los Angeles where they are sought by both gangsters and cops. But before they start fleeing, Alabama falls in love with Clarence. They get married. Then things happen to them and they react!