Out of Eureka on California's foggy northern coast, Transient Messiah have been delivering death metal since 2012 — a remote origin that lends their sound a certain isolation and darkness fitting for the genre's bleakest impulses.

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Riverside, California's Trapmaker play straight-ahead heavy metal with a no-frills approach rooted in the classic American tradition, forming in 2017 and building a steady presence in the Inland Empire scene.

Moreno Valley, California's Trapped Within Burning Machinery have been churning out slow, suffocating doom and sludge metal since 2009, combining crushing low-end weight with the caustic edge their name implies.

Trappist formed in California around 2014 as a collaborative project between Chris Dodge of Spazz and Infest, Phil Vera of Despise You and (16), and Ryan Harkins, initially as a two-piece before expanding. The band's entire thematic premise is craft beer culture, rendered through Discharge-influenced d-beat, crust punk, powerviolence, and hardcore played at punishing speeds. Their debut full-length Ancient Brewing Tactics (2018) comprised 21 tracks in 33 minutes and featured guest appearances from Tony Foresta of Municipal Waste and Steve Brooks of Torche. The project operates as a side outlet for members with extensive histories in the American hardcore underground.

San Francisco's Trauma draw from the city's storied metal heritage, reviving the power and speed metal traditions of the Bay Area with anthemic riffs and a high-octane approach that recalls the scene's 1980s heyday.

Hailing from the Palos Verdes Peninsula in Southern California, Trauma keep their sound squarely in the thrash metal lane, formed in 2018 and rooted in the region's long and productive relationship with the genre.

Santa Cruz, California's Traveler are devoted practitioners of traditional heavy metal, formed in 2018 with a clear passion for the melodic power and galloping riff structures of the genre's classic era.

Sacramento's Traversing the Cliffs of Insanity pair their theatrical name with a heavy metal and hard rock sound formed in 2023, channeling the drama and arena-ready swagger that the name itself invites.