Dianna Elise Agron (born April 30, 1986) is an American actress and singer. After primarily dancing and starring in small musical theater productions in her youth, Agron made her screen debut in 2006, and in 2007, she played recurring character Debbie Marshall on Heroes and had her first leading role. In 2009, she took the notable role of the antagonistic but sympathetic head cheerleader Quinn Fabray on the Fox musical comedy-drama series Glee. For her role in the series, she won a SAG Award and, as part of the cast, was nominated for the Brit…