Meaghan Jette Martin plays Tess Tyler: The female antagonist of the film. She went to Camp Rock to be too cool and wants to be a pop star. She is very popular but very mean to others, especially Mitchie, and even purposely blames Mitchie for stealing her charm bracelet so that she can be banned from all camp activities. But her behavior is understandable because her mom never paid attention to her when she was a kid.