American television actor who rose to fame for his portrayal of Alistair on the hit FOX musical series Glee. He is also recognized for his several appearances on the series Aquarius in 2015. He made his acting debut in the 2011 comedy Bad Teacher. He guest starred on an episode of Modern Family in 2013. His younger sister is pop singer Billie Eilish. He's originally from Los Angeles, California. He has collaborated with pop vocalist Billie Eilish.