What does Wayne Parr's name symbolize in Stargirl?

In Stargirl, Wayne Parr is Hillari Kimble's boyfriend. He is gorgeous by everyone's standards, but in every other way, he is quite ordinary—or maybe even less than ordinary. He "seemed to be nobody." He doesn't play sports, doesn't join any organizations, doesn't win awards, and doesn't make good grades. All Wayne Parr has going for him is his handsome face—yet this proves to be quite influential to their school.

The idiom "on par" references an established standard for something. Wayne Parr establishes the standard for how everyone will behave at school. Wayne Parr doesn't go to sporting events, and neither does anyone else. Wayne Parr doesn't ask questions in class, so no one else does, either. In short, Wayne Parr doesn't care about school, and therefore, no one else does.

Looking back in retrospect, Leo reflects that he isn't sure whether Parr created the standards for everyone or whether Parr was simply a reflection of everyone around him. Regardless, Wayne Par is the epitome of the typical student experience at Mica High. He is the standard and is "on par" for the typical student.

It's also interesting that a stunningly good-looking character has been given a name like Wayne. It lacks the dazzle of the name of his girlfriend, Hillari, which is trendy in both usage and spelling. Wayne evokes connotations of an older generation, falling a bit flat when compared to Hillari and Stargirl. Likewise, Wayne Parr's talents fall a bit flat when compared to his good looks, yet no one seems to notice or care as they follow his lead.

Who is Wayne Parr's role model in Stargirl?

Wayne Parr's role model is, fittingly, GQ, the Gentleman's Quarterly Magazine.

Wayne Parr's claim to fame is that he is "gorgeous".  Other than that, in terms of achievement, "Wayne Parr seem(s) to be nobody".  He does not play a sport, is in no clubs, wins no awards, and his grades are undistinguished.  He is "elected to nothing, honored for nothing", yet oddly, in a way that the narrator, Leo, cannot quite pinpoint, he is highly influential among the student body.  Wayne Parr does not care about much, and neither do the majority of the students.  His apathy and lack of spirit characterizes the school at large.

Puzzled by this phenomenon, Leo suggests that he and Kevin interview Wayne Parr on their television show, the Hot Seat.  Leo feels that Wayne is "a worthy subject precisely because he (does) nothing, because he (is) so monumentally good at doing nothing".  The highlight of the interview with Wayne is when Kevin asks him who his role model is, and Wayne replies that it is GQ.  Wayne's aspiration is to be a male model, and his "ultimate ambition" is to be on the cover of GQ.  As Wayne looks into the camera after making this declaration, Leo can see that Wayne, with his demeanor of bored self-absorption, would be perfect for the role (Chapter 4).