Chick is extremely rude, arrogant and centered on himself and winning, not unlike McQueen himself. However, theses traits are more exaggerate in Chick, and often make him more ridiculous or obnoxious. Chick always brags about winning, and he's also sarcastic and intimidating. Having lived all his career in the shadow of The King has made him bitter and devoid of any sense of fair-play.
Chick largely serves as a parallel to McQueen. They are both racers who dream of getting at Dinoco, which represents the peak of success. McQueen, however, learned to accept that helping others is more important than fame and fortune. Chick, on the other hand, failed to learn the error of his ways and let his anger be his downfall. Chick serves as an example of what McQueen would become if the latter had allowed his anger and arrogance to consume him.