A San Diego project active since 2021, Protas blend the swagger of classic heavy metal with the propulsive attack of thrash, drawing on California's deep tradition of dual-genre crossover. The project is built around guitarist Jon Protas, whose playing bridges the melodic sensibility of traditional metal with sharper, more aggressive arrangements.

Hailing from Minnesota and formed in 2025, Protogen Cumdumpster are a brutal death metal act who lean fully into the genre's extremity — low tunings, relentless blasts, and guttural vocals delivered without compromise or concession to accessibility. They represent the most uncompromising fringe of the American brutal death underground.

Protothrash is a thrash metal band from Neiva, Huila, Colombia, active since 2012. They released their debut demo 60 Años in 2014 before dropping their first full-length, Gonorreator, in 2018. The band is known for aggressive, politically charged lyrics that blend blunt social commentary with a confrontational thrash style.

Prototype are a progressive and thrash metal band from Los Angeles, California, formed in 1994 by vocalist and guitarist Vince Levalois and guitarist Kragen Lum. Over three studio albums, the band evolved from a progressive metal foundation toward increasingly aggressive thrash-inflected territory on their third record Catalyst, and several of their tracks appeared in the Guitar Hero III and Tony Hawk's Downhill Jam video game soundtracks.

Ambitious Technical Progressive Metal from Dallas.

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A Los Angeles heavy metal outfit formed in 2017, Prowler draw on the melodic, leather-and-chrome aesthetic of traditional metal — clean vocals, galloping rhythms, and guitar work that nods to the NWOBHM and American power metal bands that ruled the Sunset Strip era. Their music rewards fans who prize craft and songcraft over extreme noise.

Active since 2018 and operating out of Tampere, Finland, Praeternatura pursue a austere and ritualistic strain of black metal grounded in the Nordic tradition of atmosphere and sonic punishment. Their music resists accessibility in favor of immersive darkness, treating the genre as a vessel for something that feels genuinely beyond the natural order.

A melodic death metal outfit from Wheeling, West Virginia, Psalms of Silence blends the hook-driven melodicism of the Gothenburg tradition with a heavier, American brutality. Active since 2017, they channel somber atmosphere into punishing riff structures.