Roxanne is a student from Max's high school. She is very beautiful, popular, kind, and friendly, as well as forgiving as shown at the end. Roxanne is best friends with Stacey, the student body president. The film shows that Max has had a crush on her for some time, though he believes she never notices him due to his being incredibly unpopular.
In actuality, Roxanne is shown to have a mutual crush on Max as well, but is rather shy about it. After Max had fallen from the school's bleachers, Roxanne ran over to him, helped him up, and started giggling nervously when he too started to babble nervously at her and when he ran off in embarrassment of his goofy "Ah-hyuck!" laugh, Roxanne was left feeling confused and disappointed that he ran away from her. Later, during Max's performance at the school assembly, Roxanne is shown to be first ecstatic and then flattered by the special attention Max gives to her and smiles at his identity reveal. When in the principal's office, she stares and smiles at him longingly, but is nervous when Stacey motivates her to talk to him.
When Max finally gets to the courage to ask her out, she accepts his offer with no hesitation, and is dejected when he later has to cancel their date. Though, she moves past it when Max convinces her—through a lie—that his reasons for canceling their date are impressive enough reasons. After she later learns the truth and his reasons for lying (that he wanted her to like him), she admits that she had already liked him, and forgives his lie since it was in the right place. She accepts another date from him and is pleasantly surprised by an impromptu kiss that he gives her.
Roxanne lives with her father, who loves her intimately and is somewhat overprotective of her. In return, she loves her father dearly, although she occasionally needs to discipline him when he gets too overprotective.