Minneapolis sludge metal outfit Serac have been at work since 2015, channeling the cold, bleak energy of the upper Midwest into slow, crushing riff structures. Their music bears the weight of extended instrumental passages and a commitment to atmosphere that sets them apart within the dense Minneapolis heavy music scene. Named after the unstable ice formations that precede glacier collapse, their sound evokes that same slow-building, inevitable devastation.

Birmingham, Alabama act Seraphic Entombment have been crafting suffocating death-doom since 2019, drawing on the genre's most crushing traditions — glacial tempos, cavernous low-end, and an oppressive atmosphere that earns the city's heavy reputation.

Hayward, California's Seraphim Defloration deal in the guttural end of brutal death metal, built on punishing rhythms, gurgural vocals, and the kind of relentless sonic violence that has defined the Bay Area's underground extreme metal scene since the band's 2015 formation.

A fresh arrival out of Seattle, Seraphlesh formed in 2025 blending melodic death metal's harmonic sensibility with the raw aggression of straight-ahead death metal — one of the Pacific Northwest's newest entries in the melodeath tradition.

Denver's Seren occupy an ambitious crossroads of progressive black and death metal with metalcore influences, weaving volatile extremity and structural complexity into a sound that has distinguished the band in Colorado's underground since 2017.

San Diego's Sergulath fuse orchestral grandeur with the raw edge of black and thrash metal, building a symphonic black/thrash sound that sets them apart in Southern California's scene since their 2018 formation.

New York's Serling arrived in 2021 with a stripped-down black metal approach — raw, atmospheric, and rooted in the cold intensity that defines underground USBM, named with a nod to the state's tradition of uncompromising darkness.

Twin Falls, Idaho's Serpens Cauda bring technical progressive metal out of an unlikely locale, pursuing intricate compositional structures and demanding musicianship in a region rarely spotlighted for extreme metal since the band's 2021 formation.

Formed in 2025 out of Gilroy, California, Serpent and the Sun drive a groove-heavy thrash metal sound rooted in riff-forward aggression and thick rhythmic punch — a brand-new presence in the Bay Area's deep-rooted thrash tradition.