Their subsequent breakthrough album, Urban Discipline, built on the groundwork laid by "Bring the Noise," laying rhythmically shouted vocals over heavy, hip-hop-influenced beats and guitar riffs recalling both hardcore and thrash. The hardcore rap group Onyx recorded an alternate version of their hit single "Slam" with Biohazard backing them, and the two groups worked together again on the Judgment Night soundtrack, contributing the title song. 1994's State of the World Address solidified both their reputation for intensity and their musical hybrid, but Hambel then left the band, reducing them to a trio for 1996's Mata Leao, which some found the group's most seamless rap/metal fusion yet. Hambel was eventually replaced by ex-Helmet guitarist Rob Echevarria, and in 1997, Biohazard released the live album No Holds Barred, which showcased the in-concert ferocity for which the group had become revered.
Biohazard next signed to Mercury Records and released New World Disorder in 1999. The guys left the label following its merger with Universal and harkened back to their D.I.Y. days with a tour of Europe and Japan without label or managerial support. The rarities collection Tales from the B-Side followed in 2001, along with their next full-length, Uncivilization. Guitarist Leo Curley exited the group following the album's relase. Kill or Be Killed appeared two years later and featured new axeman Carmine Vincent (ex-Nucleus), who had previously roadied for the band. Means to an End, Biohazard's eighth and final album, was issued in August 2005 on SPV. Graziadei went on to form Suicide City with ex-members of Groovenics and Kittie. Meanwhile, Seinfeld appeared on the 2006 VH1 reality show Supergroup with Ted Nugent, Sebastian Bach, Scott Ian, and Jason Bonham. ~ Steve Huey, All Music Guide