Named for the King of Evil himself, Escondido, California's Gannondorf have been playing raw, uncompromising black metal since 2010 with the single-minded ferocity their namesake would demand. Over a decade into their existence, they remain a committed presence in the Southern California underground.

Los Angeles psychedelic sludge merchants Garbeast layer sun-scorched fuzz over cavernous doom tempos, conjuring something hallucinatory and heavy in equal measure. Since forming in 2021 they've leaned hard into the ritualistic, slow-burning end of the LA underground.

Santa Cruz, California's Gargantula has been spinning its web since 2015, weaving together progressive, stoner, doom, and death metal into something strange and sprawling. Their compositions wander freely across tempos and moods, held together by a psychedelic, spidery sensibility.

San Diego's Garth Algar dishes out stoner-laced sludge metal with the easygoing swagger and slow-rolling heaviness that the Southern California coast seems to generate naturally. Active since 2012, the band's party-ready name belies how genuinely crushing the music gets.

Los Angeles experimental outfit GASP has been pushing at the edges of sludge metal and hardcore since 2009, folding in noise, feedback, and abrasive texture until the genre lines dissolve entirely. Their music is confrontational and unpredictable, shaped by LA's eclectic and uncompromising DIY underground.

California crossover outfit Gatecrasher play the kind of thrash-fueled hardcore that belongs on sweaty club floors, tight and frantic with a punk-derived chip on their shoulder. Formed in 2019, they hit hard and keep it short.

Out of Torrance, California, Gatekeeper have been delivering no-frills death metal with a stripped-back, old-school conviction since 2013. Their approach favors bone-snapping riffs and guttural conviction over flash.

San Francisco's Gateways inhabit a singular space where progressive death metal collides with neoclassical shred, resulting in technically fearsome music that refuses to sit still. Since forming in 2011, they've pushed the limits of what guitar-driven extreme metal can absorb.

American Canyon, California's Gawdamn blend heavy and thrash metal with the kind of attitude that makes it clear they are not here to negotiate. Formed in 2020, they bring a blunt, no-nonsense energy to a region more commonly associated with progressive and tech-death.