Wiz Khalifa is an American rapper known for his full body tattoos, expensive jewelry, and rapping about violence and gangs. These unique selling points have not changed over his career. In contrast, Justin Bieber's USPs have significantly changed from his early career, when he was known for his swept haircut and innocent image popular with young girls, to his current image as a "bad boy" emphasized by tattoos and clothing styled. While Bieber evolved his image to grow with his maturing audience, Khalifa's loyal fan base expects his unchanging image as a heavily tattooed, no-nonsense rapper.