Suburban Paranoia is a thrash metal band from Pittsburg, California, formed in 2007, channeling the Bay Area thrash tradition with aggressive riffing and socially charged lyrical themes.

Subversion is a groove and progressive metal band from Asheville, North Carolina, formed in 2011, blending syncopated rhythmic heaviness with progressive song structures in the vein of the Appalachian metal underground.

Subversion is a thrash metal band from San Juan Capistrano, California, formed in 2011, drawing on Southern California's hard-hitting thrash tradition with fast, aggressive guitar work and relentless energy.

Subversion is a raw black metal project from Vermont, formed in 2011, crafting primitive, lo-fi black metal with an uncompromising underground aesthetic.

Subversion Trigger is a Seattle-based crossover thrash band formed in 2025, merging the speed and hostility of thrash metal with the raw punch of hardcore in the Pacific Northwest underground.

New York hardcore outfit SubZero was formed in 1989 by veterans of the NYHC scene, including members of Breakdown and Up Front, with vocalist Lou di Bella completing the lineup. Their 1996 debut full-length Happiness Without Peace established them as a durable force in the metallic hardcore underground, and the track 'Boxed In' was later covered by Hatebreed on For the Lions. Despite di Bella's battle with acute lymphoblastic leukemia halting the band in the late 1990s, SubZero resumed activity and released The Suffering of Man in 2004.

Succession is a progressive metal band from Denver, Colorado, formed in 2004, building elaborate, technically rich compositions that reflect the Mile High City's long-running appetite for expansive, forward-thinking heavy music.

Succor is a brutal death metal band from Portland, Oregon, formed in 2025, unleashing dense, punishing heaviness in the tradition of the Pacific Northwest's vibrant underground death metal scene.

Succorbenoth is an atmospheric black/death metal band from Cincinnati, Ohio, formed in 2012, weaving cavernous death metal heaviness together with sweeping, dissonant black metal atmosphere across their Bandcamp catalog.