Ms. Mullins (School of Rock) (2003)

Description

Played by Joan Cusack, is the uptight and strict principal of Horace Green Prep School. She is initially presented as a by-the-book administrator who prioritizes tradition and academic excellence. However, it is later revealed that she harbors a secret love for rock and roll music and longs to be more carefree. Her character arc involves a transformation as she embraces her passion and lets go of some of her rigidity.