| Jim Durkin |
1983 - 1989 ; 2002 - 2002 ; 2013 - |
HIRAX, RUTHLESS, SHELLSHOCK |
| Gene Hoglan |
1984 - 1992 ; 2002 - 2005 ; 2013 - |
STRAPPING YOUNG LAD, DEATH, TESTAMENT, Devin Townsend, FEAR FACTORY, ZIMMER'S HOLE, FORBIDDEN, DETHKLOK, THE ALMIGHTY PUNCHDRUNK, TENET, DEATH: DTA, DEATH TO ALL, JUST CAUSE, PITCH BLACK FORECAST, HURT |
| Eric Meyer |
1984 - 1992 ; 2002 - 2005 ; 2013 - |
BLOODMOON RITUAL, HUNGER |
| Mike Gonzales |
1986 - 1992 ; 2013 - |
FOREVER ENDS, VIKING |
| Ron Rinehart |
1987 - 1992 ; 2002 - 2005 ; 2013 - |
HUNGER |
| Danyael Williams |
2002 - 2004 |
KILL RITUAL |
| Cris McCarthy |
1991 - 1992 |
SIULENT SCREAM |
| Jim Drabos |
1987 - 1987 |
DEATH FORCE |
| Don Doty |
1983 - 1987 |
ELIMINATE, SHELLSHOCK |
| Rob Yahn |
1983 - 1986 |
SHELLSHOCK |
| Bob Gourley |
1984 - 1984 |
POWERLORD |
| Lee Rausch |
1984 - 1984 |
WARGOD, MEGADETH, ARTILLERY, GRIMACE |
| Jack Schwartz |
1983 - 1984 |
HOLY TERROR |
| Mike Andrade |
1983 - 1983 |
RULES OF PREY, SHELLSHOCK |
