Pittsburgh, Pennsylvania metalcore band Hero Destroyed coalesced from a local metal outfit active since the late 1990s before reforming under the current name in 2005 and signing to Relapse Records. Their self-titled debut album, released in 2008, drew comparisons to Converge and Curl Up and Die for its chaotic, dissonant approach to the genre. The band occupies a space in the heavier, more abrasive end of the mid-2000s metalcore spectrum.

Philadelphia's Hessian strip the genre back to its most feral components — black metal ferocity, speed metal momentum, and the raw bite of early thrash. Since 2014 they've operated at the intersection where aggression meets velocity.

Philadelphia's High Leaf rolled into the stoner metal world in 2023 with thick riffs and a commitment to the form's hazy, unhurried pleasures. They're squarely in the tradition of Philly heavy rock — unpretentious, loud, and more concerned with feel than complexity.

Philadelphia's High Reeper navigate the border between doom metal and hard rock with the ease of a band that doesn't feel the need to fully commit to either camp. Since 2017, they've written songs built for maximum riff payoff, borrowing from classic rock's instinct for the hook without softening their heaviness.

Philadelphia's Hivelords collapse the boundaries between black metal, doom, and sludge into a dense, oppressive mass that borrows from each tradition without fully belonging to any of them. Since 2011 they've occupied a particularly unpleasant corner of the extreme metal underground, and they seem comfortable there.

Harrisburg, Pennsylvania's Horde of the Eclipse have been forging melodic black metal since 2010, threading cold riffing and atmospheric darkness into compositions that feel celestial and menacing in equal measure.

Philadelphia death metal band Horrendous formed in 2009 out of a shared obsession with classic death metal from both sides of the Atlantic and have since evolved into one of the most critically acclaimed acts in progressive death metal. Their debut The Chills (2012) established the band's old-school foundation, while Ecdysis (2014), Anareta (2015), and Idol (2018) demonstrated increasing compositional ambition. Ontological Mysterium (2023), released through Season of Mist, was named Decibel Magazine's album of the year, cementing the band's position at the forefront of modern death metal.

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