Muscaria is a heavy and thrash metal band from Oviedo, Spain, formed in 2013. They combine heavy metal's foundations with thrash metal's aggressive intensity from the Asturias region.

Mushroom Cloud is a melodic death and thrash metal band from Aarhus, Denmark, formed in 2019. They fuse melodic death metal's Scandinavian influence with thrash metal's aggressive momentum.

Must Kill is a thrash/death metal act from Milton Keynes, delivering aggressive extremity since 2020. The band channels the new town's unexpected underground energy into ripping, high-velocity compositions.

Hailing from Herten in the Ruhr area, Musty Guts pairs death and thrash metal with a visceral, old-school approach to extremity. Active since 2018, the band channels the industrial heritage of their surroundings into grinding, aggressive compositions.

Mutagenocide is a power, groove, and thrash metal band from Oxford, England, formed in 2012. They blend power metal's energy with groove and thrash metal's aggression.

Mutant Sperm Quartet is a deliberately unconventional metal band from Palma del Río, Spain, embracing imperfection and irregularity. From 'The Swell Pubic Hair Trimmer' (2012) through 'Hell Mulacornio' (2020), their discography rejects algorithmic polish in favor of raw, uncompromising expression recorded at Buldozer Studios.

A thrash metal act from Reading, Mutant Zombie Foetus has been delivering aggressive, horror-themed compositions since 2009. The band's deliberately grotesque name matches their commitment to over-the-top thrash metal mayhem.

Mutard is a thrash metal and crossover band from Heidenheim, Germany, formed in 2014. Their releases Zombie Addiction and Inhuman Inebriation channel relentless crossover thrash with high-energy riffing and moshpit-ready aggression.

Mutator is a thrash metal act from Alkmaar in North Holland, active since 2010. The band delivers aggressive, mutation-themed thrash from the historic cheese-market city.