Mortuis is a death/black metal band from Byåsen, Norway, formed in 2016. They forge extreme metal at the fierce intersection of black and death metal.

Mortum Insignia is a death and doom metal band from Sheffield, England, formed in 2023. They craft crushing doom-death from the Steel City.

Mortuorio is a death metal act from Córdoba in Andalusia, formed in 2023 with a sound steeped in cavernous, old-school death metal traditions. The name, evoking the funereal and mortuary, matches the band's oppressive, doom-laden approach.

Morvigor is a melodic death/black metal band from Alkmaar, the Netherlands, formed in 2017. They forge extreme metal at the fierce intersection of black and death metal.

Morzienda is a progressive death/thrash metal band from Percy, France, formed in 2014. They forge aggressive extreme metal at the crossroads of death and thrash.

Founded in 2003 in Marchtrenk, Upper Austria, Mosfet developed a self-described "Deathlike Thrash'n'Roll" style fusing melodic death metal, thrash, and rock 'n' roll. Their 2012 album Deathlike Thrash'n'Roll, released on Refused Records, featured guest contributions from Dan Swanö (Edge of Sanity) and Tommy Vetterli (Coroner), before the band announced their dissolution in 2016.

Moshaholics is a thrash metal band from Burgos, Spain, formed in 2013 and dedicated to authentic old school thrash. After years of live performances across Spain, they released the LP 'I Hate Society' and the album 'Acid Archives,' channeling the aggressive spirit of classic 1980s thrash.

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Moss upon the Skull is a progressive death metal act from Brussels, active since 2014. The band delivers technically ambitious compositions that push death metal into cerebral, atmospheric territory from the Belgian capital.