The King carries racing number 43 in Pixar's Cars.
The King is the veteran Piston Cup champion who mentors Lightning McQueen indirectly through his example. His blue-and-white design and calm professionalism contrast with the reckless behavior of Chick Hicks. Richard Petty, the voice of The King, also raced with number 43 in NASCAR, making the character's number a direct reference to his real career.
The film presents The King as a respected champion nearing the end of his racing career. Lightning's arrival threatens the established order, while Chick's aggressive tactics show a very different idea of competition. The King remains a symbol of experience, sportsmanship, and continuity in the Piston Cup world.
The number 43 is not Lightning's number: Lightning uses 95, and Chick Hicks uses 86. The King is also distinct from Strip “The King” Weathers' nickname, which is used throughout the film as his racing identity.