Who are these people in Legally Blonde the Musical?

I love Legally Blonde the Musical. Okay leilani, cece, kirstine, veronica, courtney, whitney, are all greek chorous members or Delta Nu`s or extras. Grandmaster Chad is the headmaster at Harvard. Reporter is reporter at the court. Padmadon is the guy is the song Harvard Variations who has an accent. Lowell is the freaky guy with an afro in Harvard Variations. Aaron is a background guy. Winthrop no idea???!?