Biohazard is a band originally based in Brooklyn, New York. They are acknowledged as 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, and drummer Anthony Meo. Guitarist/vocalist Billy Graziadei would join the band soon after, changing the band to a four-piece. As of 2012, the lineup consists of Billy Graziadei, Bobby Hambel, Danny Schuler, and Scott Roberts.