Peter George "Pete" Helmkamp

Voz, Bajo

Terror Organ, Order From Chaos, ex-Revenge (CAN), Feldgrau (USA), ex-Abhomine, Kerasphorus

Gene Palubicki

Guitarra

Demonized (MEX), ex-Apocalypse Command, Blasphemic Cruelty, Inverser, Perdition Temple, Hexorcist, ex-Anal Blast, ex-Kerasphorus, Omegavortex, Malefic Throne

Ronnie Parmer (aka R.P.)

Batéria

2015 - 2016
Catalysis (USA), Bloodmessiah, Phalanx Inferno, ex-Cruciamentum, Brutality, ex-Amon (USA), Malevolent Creation, Promethean Horde, Blightmass, ex-Insatanity, Perdition Temple, ex-Kerasphorus

Bill Taylor

Guitarra, Bajo

1996 - 2000
Laceration (USA-2), ex-Immolation, ex-Perdition Temple

Kelly McLauchlin

Guitarra

2008 - 2009
Equinox (USA-1), Resistance (USA-1), ex-Serpent Son, Unholy Ghost, Pessimist (USA), ex-Possessed, Diabolic

Paul Collier

Batéria

ex-Fistula (USA-2), ex-Pessimist (USA)

Terry "Warhead" Eleftheriou

Batéria

ex-Apocalypse Command