Evan Seinfeld is an American musician, actor, and filmmaker, best known as the lead vocalist and bassist of the heavy metal band Biohazard, formed in 1987. The band's sound is characterized by a fusion of hardcore punk, heavy metal, and hip hop, which helped shape the genre known as "crossover" thrash. Biohazard gained significant recognition in the 1990s with albums such as "Urban Discipline" (1992) and "State of the World Address" (1994), which featured tracks like "Punishment" and "Love Denied." Their music often addresses themes of urban life and social issues. In addition to his musical career, Seinfeld gained fame for his role on the HBO series "Oz," where he portrayed the character of "Bobby B." His dual career in music and acting has made him a notable figure in both industries. Seinfeld's impact on music extends beyond his own band, as Biohazard influenced a wave of metal and hardcore bands that followed, contributing to the evolution of the New York hardcore scene and inspiring future musicians with their blend of aggressive sound and socially conscious lyrics.