Based in Farmingdale, New York, Monolith Zero formed in 2020 and pursue progressive metal with an emphasis on layered composition and dynamic shifts, channeling Long Island's quiet suburbs into expansive instrumental architecture.

Orlando's Monotheist have been blending progressive and death metal since 2012, channeling Florida's extreme metal pedigree through a technical, compositionally ambitious lens that rewards close listening.

Boulder, Colorado's Mons Absconditus — Latin for 'the hidden mountain' — have been crafting atmospheric and progressive black metal since 2015, weaving cerebral song structures through the kind of high-altitude grandeur that defines their home terrain.

A New Jersey solo project launched in 2020, Monster Mike occupies the fertile space between heavy metal and progressive metal, favoring ambitious arrangements and technical flourish alongside traditional metal muscle.

Philadelphia's Monsters Eat People formed in 2018 and pursue a progressive/post-metal blend characterized by sprawling song structures, dynamic contrasts, and the atmospheric density that the Philly underground has cultivated for decades.

A death metal act from Newhall, California active since 2012, Montezuma operate in the Los Angeles underground with the punishing directness the genre requires — heavy, methodical, and uninterested in subtlety.

Moon Command is a Minneapolis progressive thrash outfit formed in 2015, threading the rhythmic complexity of progressive metal through the aggression and speed of thrash. The result is technically demanding but driven by the forward momentum that defines the thrash tradition.

Moon Destroys is an Atlanta progressive metal project formed in 2020, drawing on both the genre's technical ambitions and its rock-leaning melodic side. Their music navigates the space between intricate arrangement and direct emotional impact.

Moon Halo is a Southington, Connecticut band formed in 2020 that brings gothic atmosphere into a progressive metal framework, favoring dark, emotive songwriting alongside shifting arrangements. Their approach blends the melodrama of gothic metal with the structural ambitions of the progressive tradition.

Moon Summoner is a Des Moines, Iowa project formed in 2023 fusing post-black metal's melodic expansiveness with progressive metal's structural complexity and hardcore's raw intensity. The combination makes for an ambitious sound that refuses easy categorization within any single extreme metal camp.

Moon Tooth is a Long Island progressive metal band formed in 2013, known for sophisticated songwriting that incorporates jazz-influenced rhythms, soulful vocal performances, and dynamic shifts that reward patient listeners. They have built a devoted following through relentless touring and a sound that feels genuinely distinct within American progressive metal.

Moonlapse is a progressive metal band from Fargo, North Dakota, active since 2015 in one of the more unlikely cities for the genre. Their sound reaches beyond the Great Plains toward the sophisticated, technically demanding progressive metal of bands that prioritize composition and arrangement over sheer brutality.

A progressive death metal band from Phoenixville, Pennsylvania, formed in 2025, merging the technical complexity of prog with death metal's crushing weight in what appears to be an early but ambitious entry into the scene.

Charlotte, North Carolina's Moraia have been fusing groove metal's hard-hitting rhythmic punch with progressive metal's structural ambition since 2022, carving out a niche in the Southeast's developing heavy underground.

Seattle progressive metal project Morgan Wick has been exploring the genre's more introspective and compositionally complex dimensions since 2017, drawing from the Pacific Northwest's culture of musical experimentation. The solo or small-ensemble format allows for a highly personal approach to progressive metal's technical demands.