DEMONOID is a Black-Death Metal project imbued with retro Thrash led by THERION mastermind Christofer Johnsson and features his band colleagues guitarist Kristian Niemann and bassist Johan Niemann alongside the esteemed figure of EBONY TEARS, SORCEROR, DOG FACED GODS, SOILWORK and CHIMAIRA drummer Rickard Evansand. The July 2004 debut 'Riders Of the Apocalypse', recorded between December of 2002 and February of 2003, received almost unanimously glowing reviews across Europe.

In March 2006 Christofer Johnsson announced that he was to retire from singing lead vocals and thus relinquished his role in DEMONOID.

In mid 2008 OPETH performed five songs at the Nova Rock festival in Austria with DEMONOID bass player Johan Niemann acting as stand in whilst regular four-stringer Martin Mendez and girlfriend Sandra Artigas welcomed the birth of their son Noak Mendez Artigas on the morning of June 14th.