- Soulfly
- Max Cavalera – vocals, 4-strings guitar, berimbau on "Bleed" & "Tribe", backing vocals on "Bumba" & "Umbabarauma", sitar on "First Commandment" & "Soulfly", talk box on "No Hope = No Fear", agogô on "Fire", chains on "Prejudice"
- Marcello D. Rapp – Bass guitar, acoustic bass on "Soulfly", double bass on "First Commandment", backing vocals on "Bumba" & "Umbabarauma"
- Roy "Rata" Mayorga – Drums, tambora on "Eye For An Eye", backing vocals on "Bumba" & "Umbabarauma", percussion on "Soulfly", "No" & "Quilombo (Zumbi Dub Mix)"
- Jackson Bandeira – guitar, backing vocals on "Bumba" & "Umbabarauma", zabumba on "Fire"
- Additional musicians
- Dino Cazares - guitar on "Eye For An Eye"
- Burton C. Bell - vocals on "Eye For An Eye"
- DJ Lethal - turntables on "Bleed" & "Quilombo"
- Fred Durst - vocals on "Bleed"
- Gilmar Bolla Oito - tambora on "Eye For An Eye", "Tribe", "Bumba", "Bumbklaatt", "Umbabarauma", "Quilombo" & "Prejudice", percussion on "Soulfly", backing vocals on "Bumba" & "Umbabarauma", triangle on "Fire"
- Jorge Du Peixe - tambora on "Eye For An Eye", "Tribe", "Bumba", "Bumbklaatt", "Umbabarauma", "Quilombo" & "Prejudice", percussion on "Soulfly", backing vocals on "Bumba" & "Umbabarauma", chocalho on "Fire"
- Benji Webbe - vocals on "Quilombo" & "Prejudice", chains on "Prejudice", backing vocals on "Bumba"
- Chuck Johnson - backing vocals on "Bumba" & "Umbabarauma", percussion on "Soulfly" & "Karmageddon"
- Eric Bobo - backing vocals on "Bumba" & "Umbabarauma", percussion on "Umbabarauma"
- Los Hooligans - lead and backing vocals on "Bumba", backing vocals on "Umbabarauma"
- Mario Caldato Jr. - backing vocals on "Bumba" & "Umbabarauma"
- Paul Booth - backing vocals on "Bumba" & "Umbabarauma"
- Rob Agnello - backing vocals on "Bumba"
- Ross Robinson - backing vocals on "Bumba" & "Umbabarauma", percussion on "Soulfly"
- Chino Moreno - vocals on "First Commandment"
- Zyon Cavalera - "You Think You All Good" voice on "Bumbklaatt"
- Christian Olde Wolbers - double bass on "No"
- Chris Flam - additional programming on "Tribe (Fuck Shit Up Mix)"
- Logan Mader – guitar on live tracks
- Ritchie Cavalera - vocals on "Bleed (Live)"
- Dayjah - vocals on "Soulfly (Eternal Spirit Mix)"
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- Production
- Ross Robinson – production, mixing on "Soulfly", "Quilombo", "Cangaceiro", "Ain't No Feeble Bastard" & "The Possibility Of Life's Destruction"
- Mario Caldato Jr. – co-production on "Bumba" & "Umbabarauma"
- Andy Wallace – mixing
- George Marino - mastering
- Richard Kaplan - engineering
- Chuck Johnson - engineering
- Rob Agnello - engineering
- Steve Sisco - Assistant mixing
- Monte Conner – A&R, compiling 1999 reissue Bonus CD
- Anders Dohn - production on live tracks except "Eye For An Eye (Live At Indigo Ranch)"
- Jacob Langkilde – engineering on live tracks except "Eye For An Eye (Live At Indigo Ranch)"
- Jan Sneum – executive production on live tracks except "Eye For An Eye (Live At Indigo Ranch)"
- Soulfly - production on "Eye For An Eye (Live At Indigo Ranch)"
- Roy Moyorga - remixing & additional production on "Tribe (Fuck Shit Up Mix)", mixing on "Eye For An Eye (Live At Indigo Ranch)"
- Chris Flam - engineering on "Tribe (Fuck Shit Up Mix)"
- The Rootsman - remixing & additional production on "Quilombo (Extreme Ragga Dub Mix)", "Quilombo (Zumbi Dub Mix)" & "Soulfly (Eternal Spirit Mix)"
- Junkie XL - remixing & additional production on "Umbabarauma (World Cup Mix)"
- Josh Abraham - remixing & additional production on "Tribe (Tribal Terrorism Mix)"
- Brian Virtue - mixing on "Tribe (Tribal Terrorism Mix)"
- Jason Corsaro - remixing & additional production on "Umbabarauma (Brasil '70 Mix)"
- Ted Jenson - mastering 1999 reissue Bonus CD
- Artwork
- Jo Kirchherr – Cover Photo
- Glen LaFerman & Christy Priske – Photography
- Mike Roper & Paul Stottler – Label Design
- Pawn Shop Press – Art Direction, Design
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