One of Maine's most idiosyncratic metal acts, Hallowed Butchery have spent over fifteen years refusing to settle — beginning as a black/grind project and gradually morphing into something incorporating doom, folk, and experimental elements. Based in Kennebec County, their music sounds like it grew out of the woods rather than any rehearsal space.

Rochester's Hallucination Realized play grindcore with the frantic urgency the format demands — short, explosive, and loud enough to rattle teeth. Part of a small but active upstate New York extreme underground since 2018.

Named with sardonic humor, Dover, Pennsylvania's Hamilton Fish have been grinding out death metal and grindcore since 2019 — short, vicious songs that waste no time and take no prisoners.

Fresno's Hands That Kill arrived in 2025 swinging a chaotic three-way hybrid of death metal, thrash, and grindcore — short, fast, and built to draw blood from the first second.

Don't let the name fool you — Dyer, Indiana's Handsome Prick play brutally earnest grindcore and death metal, delivering short blasts of punishing noise with zero irony since 2016.

Painesville, Ohio's Hangnail have been grinding away since 1998, their thrash and grindcore roots keeping them lean and mean across nearly three decades of relentless, no-frills extremity.

New Orleans' Hangnail have dealt in death metal and grindcore since 1998, pairing the city's swampy, heavy undercurrent with the kind of blasting ferocity that demands short, vicious songs.

Chicago's Harpoon bring the controlled chaos of grindcore to the thrash metal framework, producing music that's fast, violent, and barely contained since 2014. Their sound has the aggression of both genres and the patience of neither.

Worcester, Massachusetts's Harvest Manipulation weaponize black metal, death metal, and grindcore into a chaotic, multi-headed assault that refuses to stay within any single genre's borders. Active since 2018, they operate in the most extreme margins of the heavy underground.

Pennsylvania's Hashgrinder emerged from the Poconos in 2015 fusing death metal's grotesque power with grindcore's short-fuse aggression. Their approach is blunt and efficient — songs that hit hard and end before the bruise has time to form.

Los Angeles's Hate for Humanity have been waging short, concentrated grindcore attacks since 2020 out of the San Fernando Valley. Blunt, fast, and abrasive — very much a product of LA's dense underground extreme scene.

New Orleans's Hate Seed arrived in 2019 carrying death metal into a city already thick with extreme music traditions. The NOLA atmosphere lends the music a murky, humid quality — death metal soaked in bayou air.

Baltimore's Hatebeak hold a singular place in underground metal history: their vocalist is a Congo African grey parrot named Waldo, whose screeching squawks front a grinding death metal assault. Since reforming their activity around 2019, they remain one of extreme metal's most genuinely surreal propositions.

Sterling, Virginia's Hatefuck have been grinding out their caustic blend of brutal death and grindcore since 2013, delivering short, unrelenting volleys of noise and violence with no regard for subtlety or mercy.

Out of De Pere, Wisconsin, Hatekill treat death metal and grindcore as interchangeable weapons, blasting through material with the kind of blunt efficiency that leaves little room for breath or reflection.