Good Charlotte consists of Joel Madden, Paul Thomas, Billy Martin, Dean Butterworth and what current coach on "The Voice Australia"
Benji Madden Benjamin Levi "Benji" Madden (born Benjamin Levi Combs on March 11, 1979) is an American guitarist, vocalist, songwriter, and producer. He is the lead guitarist and backing vocalist for the band Good Charlotte, as well as pop rock collaboration The Madden Brothers. He formed both of these acts with his identical twin brother, Joel Madden. Benji is currently a coach on "The Voice Australia".
Gwen Sebastian Gwen Noel Sebastian is an American country music singer-songwriter. Sebastian was signed to Lofton Creek Records in 2009 and released two singles for the label. In 2012, she was a contestant on the second season of "The Voice".