Albany, New York's Mucopus are one of the more enduring acts in brutal death metal and grindcore, combining sub-basement tuned brutality with grind's sheer velocity since 1998 in a relentless assault that has defined their city's extreme underground presence.

A Pennsylvania death metal outfit formed in 2022, Mucous waste no time on aesthetics — their approach is direct and grimy, delivering the kind of unpolished, riff-dense death metal that sounds like it came up through the sewers of the state's underground scene.

Sacramento's Mucus Membrane have been inflicting their brand of grotesque death metal on California's underground since 2019, combining the clinical gore of OSDM with the savagery of the West Coast scene to produce something genuinely nauseating in the best possible way.

Fayetteville, Arkansas' Mud Lung have been churning out slow, tar-thick sludge and doom since 2013, with a sound that captures the oppressive humidity and isolation of the Ozarks in layers of distorted feedback and downtuned misery.

San Francisco's Mudface have been one of the Bay Area's reliable heavy and thrash metal acts since 2011, delivering hard-hitting riffs with a working-class directness that nods to the region's legendary thrash heritage without being beholden to nostalgia.

Minneapolis death metal outfit formed in 2019, Mudlung digs into the filthy, mid-paced end of the genre with a sound that evokes the city's underground club circuit more than any polished studio ideal.

Formed in Seattle in 2023, Mudslide channels the Pacific Northwest's hard rock heritage into aggressive thrash metal, bridging the gap between driving riff-rock and the sharper attack of the genre's classic era.

A San Francisco death-doom project born in 2025, Mudslinger buries melody beneath layers of grinding low-end, pairing cavernous death metal brutality with the suffocating crawl of doom.

Chicago death metal act MudTomb emerged in 2023 with a sound as uncompromising as its name suggests — dense, putrid, and rooted in the old-school underground ethos that the city's scene has quietly nurtured for decades.