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.

Fresno's Hands That Kill arrived in 2025 swinging a chaotic three-way hybrid of death metal, thrash, and grindcore — short, fast, and built to draw blood from the first second.

Los Angeles's Hate for Humanity have been waging short, concentrated grindcore attacks since 2020 out of the San Fernando Valley. Blunt, fast, and abrasive — very much a product of LA's dense underground extreme scene.

San Francisco's Herpes lean into D-beat and goregrind with the kind of self-aware punk nihilism that the Bay Area's underground has always nurtured since their 2010 formation. The name tells you everything about their attitude toward conventional good taste.

Oakland's Impaled have spent nearly two decades sharpening a death metal and grindcore sound with surgical humor and genuine brutality — one of the Bay Area's most reliably visceral underground acts.

Sacramento's Legion of Malice have been thrashing the Northern California death and grind underground since forming in 2023, spitting out short, venomous bursts of noise with maximum hostility. Two minutes at a time, they leave little standing.

Liberteer is the solo grindcore project of Santa Cruz, California musician Matthew Widener, better known for his work in Exhumed and Cretin, formed around 2011. Their sole album Better to Die on Your Feet Than Live on Your Knees (2012, Relapse Records) is a dense political statement rooted in anarchist philosophy, notable for grafting brass instruments, banjo, and mandolin onto a blasting death-grind foundation. The project remains a curio of the early 2010s extreme metal underground for its ideological commitment and unusual instrumentation.

Visalia's Maggot Colony have been fusing death metal brutality with grindcore brevity since 2006, delivering short blasts of California-grown filth with relentless energy. Two decades in, their approach remains as single-minded and caustic as ever.

Los Angeles' Mange operate at a grim crossroads of doom, sludge, and grindcore — a combination that sounds exactly as ugly and confrontational as it should. Since 2015 the band has weaponized tempo contrast, lurching between suffocating crawls and explosive blasts.