The four bandmembers who came together and created Killswitch Engage already had strong fan followings. Mike D'Antonio (bass) was formerly the leader and principal songwriter of Overcast, the legendary underground metal group. When Overcast split in 1998, D'Antonio sought for a year to find the right combination of players to fuse hardcore and metal with melody. During the summer of 1999, D'Antonio connected with Adam Dutkiewicz, who was the drummer for Aftershock, and Joel Stroetzel, Aftershock's guitar player. Jesse Leach, vocalist for Corrin and Nothing Stays Gold, joined on, and the foursome took the name Killswitch Engage.