Known by his nickname Billy, he rose to fame as the lead guitarist and keyboardist for the pop punk group Good Charlotte.
He started playing guitar after he got his first one for Christmas in sixth grade. His first band was called Overflow.
He published a children's book, Damious McDreary: A Boy and His Bat, in 2009.
He married Linzi Williamson on March 1, 2008. They have sons named Dreavyn Kingslee and Zander Jace together.
He appeared with his bandmates in the 2001 film Not Another Teen Movie starring Chris Evans.