Robbie Merrill (born June 13, 1963 in Lawrence, Massachusetts) is an American bass guitar player, best known for his work with the Hard Rock band Godsmack.Robbie was one of the founding members of Godsmack. Merrill met Sully Erna through Sully's sister, and the two became roommates and friends. In February 1995, Erna decided to start a new band as the lead singer after playing the drums for more than 23 years.