Libby Chessler is the head cheerleader at Westbridge High and Sabrina's main rival for the affections of Harvey Kinkle. Libby is a typical mean girl who is snobby and rich and enjoys taunting Sabrina and calling her a freak. She also targets Jenny and Valerie.Sabrina frequently casts spells on Libby to teach her a lesson, but winds up having to undo the damage she has caused.She is friends with Cee Cee and Jill.She has a stepbrother named Russell.