Claim: Brooks Wackerman is in heavy metal bands.
Evidence: Brooks Wackerman -LRB- born February 15 , 1977 -RRB- is an American musician , currently the drummer for the American heavy metal bands Avenged Sevenfold and Mass Mental , also known as the former drummer for Bad Religion , and is the younger brother of John Bob , and Chad Wackerman -LRB- formerly a member of Frank Zappa 's band -RRB-.