Line-up

• Burton C. Bell - vocals (1989-Present)
• Christian Olde Wolbers - guitar and studio bass (2004-present); studio and live bass (1994-2002)
• Byron Stroud - live bass (2004-present)
• Raymond Herrera - drums (1989-present)

Former members

• Dino Cazares - guitar (1989-2002)
• Andrew Shives - live bass (1991-1994)

Additional personnel

• John Bechdel - keyboards (live and recorded on Digimortal)
• Rhys Fulber – samples/keyboards/programming/mixing
• Reynor Diego - samples/keyboards (live and recorded on Demanufacture) (1991-1995)
• Dave Gibney – bass, vocal (spoken word intro for "Big God/Raped Souls" on Concrete) (1990-1991)
• Andy Romero - bass on Concrete (and seen briefly on the Digital Connectivity DVD)
• Steve Tushar - keyboards, programming, electronics