# Evan Seinfeld
**Evan Seinfeld** (born 1967) is an American musician and actor from Brooklyn, New York, best known as a founding member, bassist, and vocalist of the hardcore and metal band Biohazard, and for his acting role as Jaz Hoyt on the television series *Oz*.[1](https://www.imdb.com/name/nm0782640) • [2](https://evanseinfeld.com/about)
| Key fact | Detail |
|---|---|
| Born | 1967, Brooklyn, New York[1](https://www.imdb.com/name/nm0782640) |
| Signature band | Co-founded Biohazard in Brooklyn in 1987; bassist and vocalist in a fusion of hardcore, metal, and hip hop[2](https://evanseinfeld.com/about) • [3](https://evanseinfeld.com/music) |
| Biohazard albums | Studio albums over three decades, including *Urban Discipline*, *State of the World Address*, and *Divided We Fall*[3](https://evanseinfeld.com/music) |
| Departure | Left Biohazard in 2011, shortly after *Reborn in Defiance* (the band's ninth studio album) was recorded[4](https://loudwire.com/biohazard-billy-graziadei-interview-reborn-in-defiance-evan-seinfeld-departure-more/) |
| Acting | Jaz Hoyt on *Oz* (1998–2003, 33 episodes); appeared in *Judgment Night* (1993)[1](https://www.imdb.com/name/nm0782640) |
| Other projects | Attika 7 (*Blood of My Enemies*, 2012; *Mayhem*, 2013), The Spyderz, Triple Sicks[5](https://exclaim.ca/music/article/attika_7-blood_of_my_enemies) • [6](https://www.evanseinfeldmusic.com/) |
| Current work | Moved to Tulum, Mexico in 2021; founded the men's support platform Mantorship and the Full Metal Fitness app; planning a trap metal solo release for 2027[7](https://blabbermouth.net/news/biohazards-evan-seinfeld-says-his-new-solo-project-will-release-something-in-2027-you-can-expect-a-lot-of-collaborations) |
## Biohazard
Seinfeld co-founded Biohazard in Brooklyn in 1987, describing the band as built "out of basements, sweat, and conviction" and as a fusion of hardcore, metal, and hip hop made before the style had a name.[2](https://evanseinfeld.com/about) • [3](https://evanseinfeld.com/music) On the band's 1990 self-titled debut he played electric bass and shared lead vocals with guitarist Billy Graziadei, alongside guitarist Bobby Hambel and drummer Danny Schuler.[8](https://musicbrainz.org/release/d382f8e1-3216-4580-8e56-5ed067b8a8fc) Seinfeld has said the band thought of itself as hardcore, while hardcore audiences called it metal and metal audiences heard rapping; he credits Biohazard as one of the main organic pioneers of rap metal.[7](https://blabbermouth.net/news/biohazards-evan-seinfeld-says-his-new-solo-project-will-release-something-in-2027-you-can-expect-a-lot-of-collaborations) • [9](https://www.teethofthedivine.com/interviews/interview-with-evan-seinfeld/5/)
**Touring and visibility.** By the band's own account it played about 300 shows a year in the 1990s.[9](https://www.teethofthedivine.com/interviews/interview-with-evan-seinfeld/5/) Biohazard appeared on the *Judgment Night* soundtrack in 1993, a collaboration with the rap group Onyx that Seinfeld calls an honor and that interviewers have described as helping pioneer the meeting of rap and metal.[9](https://www.teethofthedivine.com/interviews/interview-with-evan-seinfeld/5/) • [6](https://www.evanseinfeldmusic.com/) In 1994 the band played the newly formed second stage at [Monsters of Rock](https://www.edgepedia.org/monsters-of-rock) at Castle Donington on June 4, on a bill with [Aerosmith](https://www.edgepedia.org/aerosmith), Pantera, Sepultura, Extreme, and [Zakk Wylde](https://www.edgepedia.org/zakk-wylde)'s Pride and Glory; its set was cut short when security stopped fans from climbing onstage, and the band was invited back to play the festival's main stage in 1996.[10](https://www.loudersound.com/music/some-kids-wanted-to-come-up-onstage-chaos-ensues-and-the-people-in-charge-seemed-to-panic-and-cut-the-power-how-a-cult-hardcore-punk-band-shut-down-one-of-rocks-most-legendary-festivals-after-bagging-an-unlikely-major-label-deal)
**Departure and reunion.** After a 2008 reunion tour that covered more than 40 countries, the classic lineup recorded *Reborn in Defiance*, released in 2012 as the band's ninth studio album. Seinfeld quit shortly after the album was finished, calling Graziadei out of the blue to say he was out; Scott Roberts, formerly of CroMags and Spudmonsters, took over bass and vocal duties.[4](https://loudwire.com/biohazard-billy-graziadei-interview-reborn-in-defiance-evan-seinfeld-departure-more/) Seinfeld later returned to the band. Its first studio album in over a decade, *Divided We Fall*, came out in October 2025 via BLKIIBLK, recorded at Shorefire Recording Studios in [Long Branch, New Jersey](https://www.edgepedia.org/long-branch-new-jersey) and The Hydeaway in [Van Nuys](https://www.edgepedia.org/van-nuys), California.[7](https://blabbermouth.net/news/biohazards-evan-seinfeld-says-his-new-solo-project-will-release-something-in-2027-you-can-expect-a-lot-of-collaborations)
## Acting
Seinfeld's best-known acting role is Jaz Hoyt on the HBO prison drama *Oz*, which he played in 33 episodes from 1998 to 2003.[1](https://www.imdb.com/name/nm0782640) His screen credits also include *Judgment Night* (1993), *Wizard of Gore*, *Kiss Me Again*, and *Angry Dogs*, with writing credits on *Final Rinse*, *Judgment Night*, and *Beavis and Butt-head*.[1](https://www.imdb.com/name/nm0782640) • [11](https://www.tvguide.com/celebrities/evan-seinfeld/credits/3030249941/)
## Adult film work
Under the name Spyder Jonez, Seinfeld performed in and directed adult films. In a 2004 interview with *AVN Online* he said he had always been an exhibitionist and had fantasized about doing porn, and he co-starred with his then-wife, the adult film performer [Tera Patrick](https://www.edgepedia.org/tera-patrick), in Vivid's feature *Tera, Tera, Tera*.[12](https://blabbermouth.net/news/biohazard-s-seinfeld-on-his-career-in-porn-i-have-always-been-hypersexual) His band The Spyderz included other adult entertainers, and he later spent time supporting the career of his girlfriend, [Lupe Fuentes](https://www.edgepedia.org/lupe-fuentes).[13](https://www.teethofthedivine.com/interviews/interview-with-evan-seinfeld/4/) • [14](https://www.ugrap.de/interviews/evan-seinfeld-biohazard/)
## Other music projects
Seinfeld's projects beyond Biohazard include the groove-metal band Attika 7, whose debut *Blood of My Enemies* (2012, Rocket Science Ventures) featured bassist Tony Campos of Soulfly, Static-X, Prong, Possessed, and [Ministry](https://www.edgepedia.org/ministry-band), and motorcycle builder Rusty Coones; a second album, *Mayhem*, followed in 2013.[5](https://exclaim.ca/music/article/attika_7-blood_of_my_enemies) • [6](https://www.evanseinfeldmusic.com/) His own music site also lists The Spyderz and Triple Sicks among his streaming catalogs.[6](https://www.evanseinfeldmusic.com/) Before Biohazard he played bass in the Wisconsin hardcore band Demise from 1986 to 1987.[15](https://www.metal-archives.com/bands/Demise/3540534494)
## Later work
After living in Los Angeles for a long time, Seinfeld moved to Tulum, Mexico in 2021. He has spoken openly about addiction and the loss of his earlier identity, and describes a routine of gym work, yoga, meditation, and breathwork; he reports getting in shape after being overweight in his 30s.[7](https://blabbermouth.net/news/biohazards-evan-seinfeld-says-his-new-solo-project-will-release-something-in-2027-you-can-expect-a-lot-of-collaborations) • [2](https://evanseinfeld.com/about) Drawing on recovery programs such as [Alcoholics Anonymous](https://www.edgepedia.org/alcoholics-anonymous), he founded Mantorship, a men's support platform holding weekly online "Circle of Brotherhood" meetings centered on vulnerability and self-acceptance.[7](https://blabbermouth.net/news/biohazards-evan-seinfeld-says-his-new-solo-project-will-release-something-in-2027-you-can-expect-a-lot-of-collaborations) • [16](https://evanseinfeld.com/) He also launched the fitness app Full Metal Fitness, which combines workout programs, meal plans, and group accountability calls.[7](https://blabbermouth.net/news/biohazards-evan-seinfeld-says-his-new-solo-project-will-release-something-in-2027-you-can-expect-a-lot-of-collaborations)
In a July 2026 interview he announced a separate solo project in a style he described as trap metal with a hardcore attitude, with electronic elements, planned for release in 2027 and featuring what he called a lot of collaborations.[7](https://blabbermouth.net/news/biohazards-evan-seinfeld-says-his-new-solo-project-will-release-something-in-2027-you-can-expect-a-lot-of-collaborations)
## References
1. [Evan Seinfeld, IMDb](https://www.imdb.com/name/nm0782640)
2. [About Evan Seinfeld, evanseinfeld.com](https://evanseinfeld.com/about)
3. [Music — Evan Seinfeld of Biohazard, evanseinfeld.com](https://evanseinfeld.com/music)
4. [Biohazard's Billy Graziadei on 'Reborn in Defiance,' Evan Seinfeld's Departure + More, Loudwire (March 14, 2012)](https://loudwire.com/biohazard-billy-graziadei-interview-reborn-in-defiance-evan-seinfeld-departure-more/)
5. [Attika 7 — Blood of My Enemies, Exclaim! (August 8, 2012)](https://exclaim.ca/music/article/attika_7-blood_of_my_enemies)
6. [EvanSeinfeldMusic](https://www.evanseinfeldmusic.com/)
7. [Biohazard's Evan Seinfeld Says His New Solo Project Will 'Release Something In 2027', Blabbermouth.net (July 23, 2026)](https://blabbermouth.net/news/biohazards-evan-seinfeld-says-his-new-solo-project-will-release-something-in-2027-you-can-expect-a-lot-of-collaborations)
8. [Release "Biohazard" by Biohazard, MusicBrainz](https://musicbrainz.org/release/d382f8e1-3216-4580-8e56-5ed067b8a8fc)
9. [Interview with Evan Seinfeld, Teeth of the Divine (April 26, 2010)](https://www.teethofthedivine.com/interviews/interview-with-evan-seinfeld/5/)
10. [How a cult hardcore punk band shut down one of rock's most legendary festivals, Louder](https://www.loudersound.com/music/some-kids-wanted-to-come-up-onstage-chaos-ensues-and-the-people-in-charge-seemed-to-panic-and-cut-the-power-how-a-cult-hardcore-punk-band-shut-down-one-of-rocks-most-legendary-festivals-after-bagging-an-unlikely-major-label-deal)
11. [Evan Seinfeld List of Movies and TV Shows, TV Guide](https://www.tvguide.com/celebrities/evan-seinfeld/credits/3030249941/)
12. [Biohazard's Seinfeld On His Career In Porn, Blabbermouth.net (June 18, 2004)](https://blabbermouth.net/news/biohazard-s-seinfeld-on-his-career-in-porn-i-have-always-been-hypersexual)
13. [Interview with Evan Seinfeld, page 4, Teeth of the Divine (April 26, 2010)](https://www.teethofthedivine.com/interviews/interview-with-evan-seinfeld/4/)
14. [Evan Seinfeld (Biohazard), ug rap](https://www.ugrap.de/interviews/evan-seinfeld-biohazard/)
15. [Demise, Encyclopaedia Metallum: The Metal Archives](https://www.metal-archives.com/bands/Demise/3540534494)
16. [Evan Seinfeld: Biohazard, Full Metal Fitness & Mantorship, evanseinfeld.com](https://evanseinfeld.com/)
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*Topic: Encyclopedia › Arts and culture › Music › Musicians and ensembles › Individual musical biographies › Rock, metal, and popular-band musicians › Emo, post-hardcore, and metalcore*
*Initially written Sep 17, 2026 · Reviewed: Sep 17, 2026; Sep 30, 2026; Oct 25, 2026 · Edited: Sep 30, 2026; Oct 12, 2026; Oct 15, 2026; Oct 25, 2026 · Last review: Oct 25, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license