Sid Vicious

Everything about the Sex Pistols' singer was just a mess. He literally did not know how to play the guitar, he was a terrible singer, and he was also charged with murdering his girlfriend while the band was at its peak. He also had some problematic racial and political opinions, but fans glorify him as the original King of Punk for who knows what reason. 

Selena Gomez

Disney doesn't need to turn every single actor into a performer. Selena Gomez was fine on "Wizards of Waverly Place," but that didn't mean she needed to become a pop star after the show ended. Her music with Selena Gomez and the Scene was downright boring.