| Current members: | |
 | 1989-Fernando Ribeiro (Langsuyar) – vocals |
 | 1992-Miguel Gaspar (Mike/Nisroth) – drums |
 | 1992-Pedro Paixão (Passionis/Neophytus) – keyboards, guitars |
 | 1995-Ricardo Amorim (Morning Blade) – guitars |
 | 2003-Aires Pereira (Ahriman) – bass |
| Former members: | |
| 1989-1992 – Pedro C. – guitars | |
| 1989-1992 – Toureiro aka Baalberith – drums | |
 | 1989-1997 – Joao “Ares” Pedro – bass |
| 1990-1991 – Duarte P. “Mantus” – guitars | |
| 1998-2002 – Sergio Crestana (Daemonarch) – bass | |
| Tour members: | |
| 2003 – Aires Pereira – bass | |
 | 2008 – Anneke Van Giersbergen (ex-The Gathering) – vocals |
Guest musicians:
1993 – J. Queiros – keyboards on Anno Satanae
1993-1994 – Sara Carreiras – bisel flute
1994- Sara Arega – vocals on Under the Moonspell
1994 – Nuno Flores – violins on Under the Moonspell
1994 – Antonieta Lopes – vocals on Under the Moonspell
1995-1996 – Birgit Zacher – vocals on Wolfheart oraz Irreligious
1996 – Markus Freiwald – percussion on Irreligious
2003 – Niclas Etelävuori – bass on The Antidote
2006 – Waldemar Sorychta – bass
2006 – Jiří “Big Boss” Valter (ROOT) – vocals
2006 – Raimund Gitsels – violins
2008 –Anneke Van Giersbergen – vocals
J.M. – vocals on Anno Satanae
Abdul Sewtea – Arabic vocals on Under the Moonspell