Riverside, California's Torn Within, formed in 2022, plays deathcore with a death metal core, bringing the genre's characteristic low-tuned heaviness and rhythmic punishment to the Inland Empire's underground scene. The greater Los Angeles region's long deathcore infrastructure provides a strong platform for their brutality.

Orange County, California's Tornadic, formed in 2023, began in thrash metal before moving toward metalcore — a shift common to Southern California bands navigating between the genre's old-school traditions and its modern, rhythm-forward evolution. Their dual-genre identity reflects the flexibility of a regional scene comfortable with aggressive crossover acts.

A Concord, California groove/thrash outfit active since 2005, Torque channels the mid-90s Bay Area chug with locked-in rhythmic heaviness and thrash-driven aggression.

A thrash metal act based out of El Paso, Texas (listed under California on some databases), Torture pursues the raw, stripped-back end of the genre with a foundation in classic 80s thrash aggression.

Concord, California's Torture Chamber has been active since 1998, making them one of the longer-running black metal acts from the Bay Area's underground — a testament to persistence in an unforgiving scene.

Santa Cruz, California's Torture Hammer formed in 2024, welding death metal's heaviness to hardcore's aggression and urgency — a young band working at the collision point of two extreme traditions.

San Jose, California's Total Badass play crossover thrash with the no-apologies irreverence the name implies, mashing punk speed with thrash riff sensibility in a style that owes as much to the skate-and-destroy ethos as to metal.

Los Angeles heavy metal outfit Total Eclipse draw from the deep well of Southern California's traditional metal scene, favoring no-frills riff-driven songwriting in the tradition of the city's storied underground.

San Francisco's Totem approach doom metal through a psychedelic lens, layering hazy, reverb-soaked atmospheres over glacially slow riff progressions in a style that reflects the Bay Area's history of mind-expanding heavy music.