Special Buddy Discount is a blackened grindcore band from Rochester, New York, active since 2012, fusing the relentless velocity of grindcore with the abrasive, lo-fi spite of black metal. The deliberately absurdist name belies music of genuine sonic hostility.

Species Splicer is a Lynnwood, Washington band formed in 2017 that operates in the overlapping territory of blackened brutal death metal and deathcore. Their sound grafts the chromatic density and guttural extremity of brutal death metal onto deathcore's breakdown-heavy architecture, with black metal atmosphere woven throughout.

Speckmann Project is the ongoing death metal vehicle of Paul Speckmann, the American vocalist and bassist best known as the driving force behind Master, one of the founding bands of the American death metal scene. Reactivated in 2022 and based around Uherské Hradiště in the Czech Republic, where Speckmann has long resided, the project continues his decades-long tradition of stripped-down, riff-forward death metal.

Spectra is a heavy metal band from Rubidoux, California, formed in 2016, working within the traditional heavy metal style with an emphasis on melodic songwriting and classic genre sensibilities. Their sound reflects the enduring influence of the NWOBHM and American power metal traditions.

Spectral Archfiend is a black metal project from West Lafayette, Indiana, formed in 2017, crafting raw and aggressive black metal with a firm grounding in the genre's second-wave traditions. The project channels themes of malevolence and darkness through a deliberately harsh sonic palette.

Spectral Blood is a Tampa, Florida death/black metal band formed in 2018, drawing from the city's legendary extreme metal lineage while incorporating the cold menace of black metal. Their sound merges Floridian death metal's thick, churning low end with black metal's atmospheric hostility.

Spectral Damnation is a progressive heavy and power metal band from Kingston, New York, formed in 2018, blending the epic melodic ambition of power metal with progressive metal's structural complexity. Their music favors expansive arrangements, technical proficiency, and soaring vocal dynamics.

Spectral Decay is a black metal project from Albuquerque, New Mexico, formed in 2023, delivering raw and uncompromising black metal shaped by the stark, arid character of the desert Southwest. A recent entry into the scene, they embrace the underground ethos of stripped-down, primitive black metal production.

Spectral Descent is a New Jersey death metal band formed in 2017, pursuing a sound built on technical riffing and downtuned aggression in the tradition of the American death metal underground. Their work reflects the dense, oppressive character that defines the East Coast extreme metal scene.