Los Angeles grindcore outfit H.A.R.M. has been blasting through the Southern California underground since 2018, delivering the kind of short, violent bursts that the genre demands. Their name functions as a mission statement.

San Diego's Hadoth deals in atmospheric black metal that prioritizes enveloping darkness over sheer violence — sweeping, textured, and deliberately cold. Formed in 2024, they're a recent addition to Southern California's contemplative black metal scene.

Bay Area mincecore purveyors Haggus grind through ultra-short blasts of noisy, lo-fi punk and grindcore that pay homage to the UK crust and mince traditions of Agathocles and Unholy Grave. With an absurdly prolific discography of splits and EPs, they are one of the most dedicated practitioners of the global mince underground.

Santa Rosa, California's Haig Ozanian is both a solo project and a melodic death metal statement, active since 2022 and drawing on the Scandinavian-influenced style's melodic sensibility to craft songs that balance aggression with memorable hooks.

Hail the Sun formed in Chico, California in 2009, delivering a technical and inventive strain of post-hardcore driven by Donovan Melero's acrobatic vocals and virtuosic drumming from behind the kit. Albums like 'Wake' and 'New Age Filth' showcase the band's progressive tendencies, weaving complex time signatures and angular guitar work into emotionally charged songwriting. Their willingness to experiment within the post-hardcore framework has earned them a dedicated following among fans of bands like Dance Gavin Dance and Circa Survive.

San Diego's Hair of the Bear conjure the sun-baked, fuzz-soaked side of stoner doom — riffs that sprawl as wide as the Pacific and drag just as deep. Formed in 2018, they've built a hazy, heavy catalog that owes as much to desert rock as it does to doom.

Named for a surf town on Oahu's North Shore, Los Angeles' Haleiwa play black/death metal with none of that coastal serenity — just caustic, violent extremity from the City of Angels since 2010.

Long Beach's Half Breed play thrash with a crossover edge — the kind of pit-friendly aggression that owes as much to hardcore as it does to Exodus or Slayer. Formed in 2013, they're a reliable presence in Southern California's underground.

Pasadena's Half Moon Codex operate at the intersection of sludge, drone, and doom — long-form compositions that move with the patience of tectonic plates and the weight to match. Formed in 2018, they're a fixture in the Southern California heavy underground.