Out of Santa Fe Springs, California, Skeptor has been honing a razor-sharp technical speed and thrash metal attack since 2014 — a Southern California act rooted in the region's rich thrash heritage but pushing toward more intricate, precise territory.

San Francisco's Skin Horse has been wading through thick sludge and crushing doom since 2016, drawing on the Bay Area's fertile heavy underground to craft slow, oppressive music with the weight of the Pacific behind it.

A California death metal outfit with deep roots in hardcore, Skinfather (formed 2012) carve out a punishing middle ground between the two genres — delivering crushing riffs and pit-ready aggression that owes as much to the beatdown scene as it does to old-school death metal.

Out of Bakersfield, California, Skinjob have been grinding out death metal since 2012 in a city not known for its metal scene, which gives their output a flinty, self-sufficient character that sets them apart from their coastal counterparts.

Skinlab formed in San Francisco, California in 1994, carving out a groove-heavy sound that bridged the aggression of Bay Area thrash with the downtempo churn of early 1990s groove metal and the emerging nu-metal movement. The band's early albums Disembody: The New Flesh and Bound, Gagged and Blindfolded were released with assistance from Robb Flynn of Machine Head, who helped them access the European touring circuit. After disbanding in 2003 and reforming multiple times, Skinlab continued releasing material through the 2000s and 2010s, including The Scars Between Us (2009) and the single Flesh Wounds (2024) on WURMgroup.

San Jose's Skinner, formed in 2022, blend the melodic ambition of power metal with the velocity of thrash — a Bay Area project that draws on the region's rich legacy of high-energy, technically inclined heavy metal.

Corona, California's Skinslip work the intersection of sludge and doom, conjuring slow, weight-bearing riffs that reflect the smoggy, sun-bleached desolation of the Inland Empire since their formation in 2014.

Pomona, California's Skitz bring a heavy metal and hard rock sensibility to the Inland Empire underground, a scene formed since 2011 that blends the blue-collar grit of the 626 with classic heavy riffing.

A separate Santa Rosa, California outfit also formed in 1985, this Skitzo drew from the thrash explosion happening across the Bay Area at the time — capturing the speed and aggression that defined the mid-decade California underground.