Mars is a stoner and doom metal band from Mars, France, formed in 2024. They channel crushing stoner doom from their aptly named hometown.

Marthe is a heavy and doom metal band from Bologna, Italy, formed in 2019. They channel crushing heavy doom from the Emilian capital.

Martyrdoom is a death/doom metal band from Warsaw, Poland, formed in 2017. They craft crushing doom-death compositions steeped in oppressive heaviness.

A groove metal and metalcore act from Budapest, Bloodiest has been delivering rhythmically driven aggression since 2011. The band pairs heavy grooves with metalcore breakdowns.

Marzuraan is a drone and doom metal band from Gateshead, England, active since 2002. With over two decades of activity, they deliver crushing drone-doom from northeast England.

Mashu is a drone doom and sludge metal band from Salamanca, Spain, formed in 2021. They craft crushing, ultra-slow compositions built on droning repetition and sludge metal's abrasive weight.

Massive Bereavement is a drone and doom metal band from Manchester, England, formed in 2013. They craft monolithic drone-doom compositions from the northwest of England.

Massive Thunderfuck was a sludge/doom/death metal band from the Neuss/Düsseldorf area of Germany, active from 2013 until their demise. Their 2019 album "Serpent Worship" delivered walls of down-tuned guitars and demonic, weed-filled shouts of hell across a blend of sludge, doom, and black metal.

Massue is a sludge and doom metal band from Rouen, France, formed in 2025. Their French name meaning "mace" captures the blunt, crushing force of their doom-sludge assault.