(born December 11, 1981) better known by his stage name  Zacky Vengeance , is the rhythym guitarist   and backing vocalist  for the American metal/rock  band  Avenged Sevenfold . Baker attended  Hungington beach High School  , and formed Avenged Sevenfold there with  M.Shadows and The Rev.  Before Avenged Sevenfold, he was in a