Hayen Leslie Panettiere (born August 21, 1989) is an American actress, singer, and Grammy Award nominee. Hayden plays the character Claire Bennet on the NBC television program Heroes. The advertising campaign and slogan for the program known as "Save the Cheerleader, Save the World" has helped make Panettiere famous. She has also worked as a voice actress in the role of Kairi in the Square Enix Kingdom Hearts series.