Monos is a thrash metal and crossover act from the Catalan town of Roda de Ter, formed in 2025. The band brings the manic energy of crossover thrash to a small town setting, merging hardcore punk aggression with metal riffing.

Morbid Joke is a provocative crossover thrash and grindcore outfit from Rauma, Finland, self-described as 'True Finnish Anti-Music' driven by total disgust towards modern music. Their catalog includes releases like 'Fuck The Mainstream, Here's Morbid Joke' and 'The Disgusting Perversions Of The Bourgeoisie,' delivering intentionally abrasive and confrontational sonic assaults.

Mr Marcaille is a thrash metal and crossover act from the historic Lorraine city of Verdun, active since 2013. The band brings the aggressive energy of crossover thrash to a city better known for its World War I legacy.

MRZST is a thrash metal, blackened crossover, and hardcore act from the Ural city of Ufa, active since 2019. The band delivers aggressive, genre-crossing compositions from the Bashkortostan underground.

Mudguard is a thrash metal, crossover, and hard rock act from Falun in Dalarna, active since 2016. The band delivers unpretentious, energetic metal with the utilitarian spirit their name suggests.

A thrash metal and crossover act from Rotenburg in Lower Saxony, Mudhead has been delivering aggressive compositions since 2018. The band channels high-energy crossover thrash from the north German countryside.

A thrash metal and crossover act from Barcelona, Mugre — meaning 'filth' in Spanish — has been delivering grimy, aggressive compositions since 2016. The band channels the Mediterranean city's punk-metal crossover energy.

Murderizer is a thrash metal and crossover act from Kharkiv, active since 2014. The band delivers aggressive, high-velocity compositions from Ukraine's second city.

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.