Mudhole is a thrash, death metal, and metalcore band from Waldsassen, Germany, formed in 2022. They combine multiple aggressive styles into a cohesive barrage of extreme metal violence.

Mudpusher is a death/thrash/groove metal band from Sundbyberg, Sweden, formed in 2008. They forge aggressive extreme metal at the crossroads of death and thrash.

Mudslider is a progressive thrash, heavy, and death metal band from Normandy, France, formed in 2025. They blend progressive ambition with the aggression of thrash, heavy, and death metal.

A groove, death, and thrash metal band from Namur, Belgium, active from 2010 to 2017 as an independent act. Their lyrical focus on gore, accident, and violence placed them within the abrasive end of the Belgian extreme metal underground, combining the rhythmic punch of groove metal with death metal aggression.

Muerte por Mil Cortes is a death metal band from Elche, Spain, formed in 2010. Their name meaning "death by a thousand cuts" sets the tone for their brutal, relentless death metal approach.

Muertissima is a death metal act from Paris, active since 2021. The superlative Spanish-inflected name, meaning 'most dead,' channels extreme mortality into aggressive death metal from the French capital.

Muggeseggel is a death metal and grindcore band from the Markgräflerland region of Baden-Württemberg, Germany, formed in 2022. Their distinctive hook is performing in regional dialect, and despite their recent formation they have already released a self-titled album (2023), a split with Digest! (2025), and 'Lällekönig' (2025).

Mugrind is a grind/punk band from Barcelona, Spain, operating under the motto 'Dirty Drunk & Grind.' Their releases 'Beautiful Hell Community' and 'Spoko Evillution Porko Dio' deliver a raw, aggressive collision of grindcore and punk from Barcelona's underground scene.

Muilaff is a death/black metal band from Littau, Switzerland, formed in 1998. They forge extreme metal at the fierce intersection of black and death metal.