Underclass Hero

Underclass Hero is the fourth studio album by Canadian punk rock band, Sum 41. "Underclass Hero" was released on July 18, 2007, in Japan, July 23, 2007, in Canada and Europe and on July 24, 2007, in the United States.
The album featured the self-titled single "Underclass Hero", "Walking Disaster" and "With Me".
The album was the first that did not feature guitarist Dave Baksh who left the band On May 11, 2006, because of personal reasons. The album received mixed to negative reviews but also received success on the Canadian and on the United States album charts where it reached #1 on the Canadian Albums Chart and also at #7 on the U.S. Billboard 200.
The album was certified in both Canada and Japan where it sold 100,000 Units+ in Japan and 50,000 Units+ in Canada.