Heather Duke is a fictional character from the musical and film adaptation of Heathers, which is based on the 1988 movie of the same name. She is portrayed as a member of the popular clique at Westerburg High School, known for her sharp wit and often cruel demeanor. Heather Duke is characterized by her desire for power and status among her peers. In the story, Heather Duke's personality shifts as she navigates the complexities of friendship and rivalry. After the death of her friend Heather Chandler, she takes on a more dominant role within the group, showcasing her ambition and willingness to manipulate others to maintain her social standing.