Cleveland, Ohio's Muciferous are a 2024 goregrind and death metal project that leans hard into biological horror, piling up suffocating riffs and blastbeats in the tradition of the most viscerally repulsive extreme metal the underground has to offer.

Townsend, Massachusetts' Mucklers Circle carve out an unusual niche by mixing Southern metal swagger with New England-forged groove and metalcore aggression, resulting in a genre-blurring take on heavy music that has no business working as well as it does since 2015.

Atlanta's MuckRaker have been digging into the Southern metal tradition since 2012, delivering the heavy, groove-soaked, Dixie-rooted metal that Georgia's scene does best with a rawness befitting their name's muck-dwelling imagery.

Formed in Bergenfield, New Jersey in 1986, Mucky Pup played crossover thrash and hardcore with a comedic bent, debuting with Can't You Take a Joke? (1988) on Torrid Records. A Boy in a Man's World (1989) brought the band broader recognition in Europe, where they toured extensively and charted, and they subsequently signed to Century Media Records for Act of Faith (1992). The band went through multiple lineup and stylistic changes before disbanding in the mid-1990s.

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.