Heather Matarazzo made a memorable impact playing Dum Dum, the outspoken and fierce member of Kevin Williamson’s 1996 horror classic Scream. She’s also known for bringing endearing awkwardness and heart to Lilly Moscovitz, the best friend and loyal sidekick in The Princess Diaries and its sequel, where her chemistry with Anne Hathaway’s Mia Thermopolis adds layers to Gabor Csupo’s coming-of-age tales. Matarazzo’s talent shines in roles that blend humor with vulnerability, making supporting characters feel authentic and unforgettable. Beyond these favorites, she often chooses projects that highlight marginalized voices and complex identities, aligning with her off-screen advocacy. Her performances stay in your mind not just for the dialogue but for the raw emotional truth she brings, whether surviving teenage terror or navigating royal drama. Heather Matarazzo’s presence on screen makes secondary roles stand out as much as leads, proving an actor’s power doesn’t always rest in starring credits alone.