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

Mars on Earth is an industrial symphonic black metal project from Germany, active since 2019. Their sound fuses the mechanized aggression of industrial metal with symphonic orchestration and black metal's atmospheric fury, creating a dense, layered sonic assault.

Marshall Law was a seminal Birmingham heavy/power metal act formed in 1987, who toured alongside Motörhead and Yngwie Malmsteen during the late 1980s. Their debut album on Heavy Metal Records and subsequent releases like 'Power Game' cemented their reputation as one of the UK's finest traditional metal bands before their final split in 2010.

Marsyas is a gothic metal band from Bucharest, Romania, formed in 2020. They craft dark, atmospheric gothic metal layered with emotional depth.

Bloodcrown is a melodic death metal act from Budapest, blending harmonized guitar work with aggressive rhythms. The band channels the Scandinavian melodeath tradition through a Hungarian perspective.

Marterpæl is a three-piece black metal band from Aarhus, Denmark, formed in 2022. Their releases including Hævnens Lys and a 2023 promo deliver raw, authentic Danish black metal.

Marterzid is a death 'n' roll/crust punk band from Berlin, Germany, whose 2025 rehearsal-room demo introduces a four-piece delivering German-language vocals over a raw hybrid of death metal weight, hardcore intensity, and punk urgency. Their sound blends provocative, dystopian themes with aggressive crossover instrumentation.

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

Marthyrium is a bestial black metal band from Ferrol, Spain, formed in 2007, practicing profound death worship in conspiracy with darkness. Their five-release discography from 2007 through 2023's Through The Spheres of Darkness fuses bestial black metal with abyssal death metal influences.