| Andy LaRocque | Guitars (1985-present) |
| See also: ex-Illwill, ex-Metal Against Coronavirus, ex-X-World/5, Blue Detective, ex-E.F. Crowd, ex-Swedish Erotica |
| King Diamond | Vocals (1985-present) |
| See also: Mercyful Fate, ex-Black Rose, ex-Danger Zone, ex-Brats, ex-Brainstorm, ex-Roadrunner United |
| Mike Wead | Guitars (1990-1994, 2000-present) |
| See also: Inner Fright, Mercyful Fate, Nattas, Bibleblack, ex-Hexenhaus, ex-Memento Mori, ex-Warchild, ex-Kamlath, Nu Jävlar!, ex-Candlemass, ex-Maninnya Blade, ex-The Haunted (live), ex-Abstrakt Algebra, ex-Warning, ex-Firegod, ex-Hemisfear, ex-Kryptillusion |
| Matt Thompson | Drums (2000-present) |
| See also: Aghora, Imagika, Legacy of Disorder, Shaolin Dying Squad, Wings of Dahak, ex-Metal Against Coronavirus, ex-Surgeon, ex-Truncator, ex-Synkronizity, The Pyre, ex-Autumn Silence, ex-Bat Castle, ex-Judgement, ex-DeuxMonkey |
| Pontus Egberg | Bass (2014-present) |
| See also: Wolf, Dignity Night Flight Orchestra (live), ex-Dark Illusion, At the Movies, Kryptonite, Tainted Nation, Treat, The Poodles (live), ex-Lion's Share, ex-HammerFall (live), ex-Zan Clan |
| Timi Hansen | Bass (1985-1987) |
| (R.I.P. 2019) See also: ex-Danger Zone, ex-Lavina, ex-Brats, ex-Mercyful Fate |
| Mikkey Dee | Drums (1985-1989) |
| See also: Scorpions, ex-Motörhead, Nordic Beast, ex-Thin Lizzy, ex-WWIII, ex-Dokken (live), ex-Geisha, ex-Don Dokken, ex-Nadir, ex-E-Type (live) |
| Floyd Konstantin | Guitars (1985) |
| See also: ex-Destiny, ex-Geisha |
| Michael Denner | Guitars (1985-1987) |
| See also: Brats, Denner's Holocaust, ex-Danger Zone, ex-Denner / Shermann, ex-Force of Evil, ex-Lavina, ex-Zoser Mez, Iron Space, Lucifer's Dirigible, Taylor's Universe, ex-Mercyful Fate, ex-Art Cinema, ex-Denner's Trickbag, ex-Virus 7 |
| Pete Blakk | Guitars (1987-1990) |
| See also: Disaster/Peace, ex-Blakk Totem, Maryann Line (live), ex-Geisha, ex-Trazer, ex-Blakk Rainbow (Rainbow tribute), ex-Crystal Thanatus |
| Hal Patino | Bass (1988-1990, 2000-2014) |
| See also: Disaster/Peace, ex-Force of Evil, ex-Maltese Falcon, ex-Palladion, Dark Blue Inc., Maryann Cotton, Nordic Beast, ex-Pretty Maids (live), ex-Blakk Totem, ex-Doctor Butcher, ex-Geisha, ex-Åge Sten Nilsen's Ammunition, ex-Witchdoctor |
| Chris Whitemyer | Drums (1988) |
| See also: ex-Valhalla |
| Snowy Shaw | Drums (1989-1994) |
| See also: Dan Black, Mad Architect, Snowy Shaw, Common Disorder, ex-Denner / Shermann, ex-Illwill, ex-Notre Dame, ex-Cans, Metal accomplish Jupiter, Snömannen & Hans Vänner, XXX, Maryann Cotton (live), ex-Dimmu Borgir, ex-Dream Evil, ex-Mercyful God's will, ex-Nightrage (live), ex-Sabaton (live), ex-Scheepers (live), ex-Therion (live), ex-Memento Mori, ex-Colossus (live), ex-Firegod, ex-Kee Marcello's K2, ex-Loud 'n' Nasty, ex-Snowy Shaw and the Star-Spangled Illicit, ex-Them Sluts! (live) |
| Sharlee D'Angelo | Bass (1990-1993) |
| See also: Arch Incompatible, Black Earth, Spiritual Beggars, Rank Night Flight Orchestra, ex-Illwill, ex-Dismember, ex-Mercyful Fate, ex-Witchery, ex-Facelift, ex-Sinergy, ex-Firegod |
| Chris Estes | Bass (1994-1999) |
| See also: ex-Mindstorm, ex-Atrox |
| Darrin Anthony | Drums (1994-1997) |
| See also: ex-Mindstorm |
| Herb Simonsen | Guitars (1994-1998) |
| See also: ex-Mindstorm |
| John Luke Hebert | Drums (1997-2000) |
| See also: ex-Manta Ray, ex-Chastain, ex-Leather, ex-Arms of the Sun |
| Glen Drover | Guitars (1998-2000) |
| See also: Walls of Blood, Withering Scorn, ex-Eidolon, ex-Glen Drover, ex-Castrofate, ex-Megadeth, ex-Testament (live), ex-Queensrÿche, ex-Hail! |
| David Harbour | Bass (1999-2000) |
| See also: ex-Counterpoint, ex-Manta Ray, ex-Chastain, ex-Leather, ex-Equimanthorn, ex-David Harbour, ex-Leather Leone, ex-Uncle Festre |
| Myrkur | Vocals (additional), Organ (2024-present) |
| See also: Myrkur, ex-Amalie Bruun, ex-Ex Cops |
| Michael Moon | Guitars (1987) |
| See also: ex-Madison |
| Livia Zita | Vocals (additional) (2003-2024) |
| Pontus Egberg | Bass (2014) |
| See also: Wolf, The Night Flight Tie (live), ex-Dark Illusion, At illustriousness Movies, Kryptonite, Tainted Nation, Broaden, The Poodles (live), ex-Lion's Fist, ex-HammerFall (live), ex-Zan Clan |
| Hel Pyre | Vocals (additional) (2017) |
| See also: Afterblood, Hel Pyre, Nervosa, W.E.B., ex-Christfuck, ex-Kamelot (live), ex-Darcode |