Biohazard is an American hardcore band formed in Brooklyn, New York City, in 1987. They are one of the earliest bands to fuse hardcore punk and heavy metal with elements of hip hop. The original lineup consisted of bassist/vocalist Evan Seinfeld, guitarist Bobby Hambel, guitarist/vocalist Billy Graziadei, and drummer Anthony Meo. The band has released 10 studio albums, with their most commercially successful being "Urban Discipline" (1992) and "State of the World Address" (1994).