Leo Curley grew up in Troy NY on a steady diet of metal and hardcore. Started taking lessons around the age of twelve and hit the stage at seventeen. From there it was years of original heavy bands till landing the slot with Biohazard in 2000. Earlier he used to play in a band called Bent. Now he has his own band called NA$H. The most likely reason of parting ways with Biohazard (May 2002) was creating his own music that he couldn't do 100% in Biohazard.