Effective period / Period of releases: 1991 - 2022

Members: Kristoffer Rygg, Knut Magne Valle, Carl August Tidemann, Simen Hestnæs, Hugh Stephen James Mingay, Øyvind Hægeland, Tore Moren, Dag F. Gravem, Steinar Sverd Johnsen, Marius Vold, Jan Axel Von Blomberg, Tomas Haugen

An avantgarde/progressive metal band from Oslo, Norway, founded in 1990.

Formed by Sverd (Steinar Johnsen) and Hellhammer (Jan Axel Blomberg) as an offshoot of the band Mortem. In April 2007 the band announced that they were breaking up. The return of Arcturus was announced in September 2011 and they have remained active since then.

Current line-up:
Sverd (Steinar Johnsen): Keyboards (1990 – )
Hellhammer (Jan Axel Blomberg): Drums (1990 – )
Skoll (Hugh Mingay): Bass (1995 – )
Knut Magne Valle: Guitar (1996 – )
ICS Vortex (Simen Hestnæs): Vocals (2005 – )