Overdose Nuclear coined the term "Metal do Mangue" to describe their death/thrash sound rooted in the coastal town of Ubatuba, pairing heavy riffing with socially conscious lyrics about environmental destruction and political corruption. Their 2023 album Metal do Mangue features guest appearances from Mayara Puertas of Torture Squad and Jairo Vaz Neto of Chaos Synopsis, alongside a cover of Raul Seixas's "Cowboy Fora da Lei," cementing the band's distinct identity within the Brazilian extreme metal scene.

P.E.O.R — the name standing for 'Por El Odio Reacción' (Reaction Through Hate) — are a crossover thrash and death metal band from Rosario, Argentina's second-largest city and a place with a long, scrappy DIY metal tradition. Formed in 2015 and built around the core of Gonzalo Gamboa (vocals and bass), Alejandro Laudanno (guitar), Lucas Manzón (guitar), and Gonzalo Acevedo (drums), the band hit their stride quickly with two substantial releases that showcase a command of the crossover thrash idiom laced with genuine death metal ferocity. Their 2015 debut, 'Por El Odio Reacción,' announced the band as a serious proposition: twelve tracks of accelerated, hardcore-influenced thrash with death metal overtones, clocking in around thirty minutes of barely controlled aggression. The album even includes a cover of Argentine rock legends SUMO, a nod to the broad musical literacy that underpins their sound. Their 2017 follow-up, 'Exterminio de Almas,' went deeper and darker — thirteen tracks recorded between June and July 2017 at 312 Estudio, with mixing and mastering by Juancho Huerta at Auditiva Records. The album opens with a Charles Bukowski quote and unfolds as a bleak social commentary, with lyrics addressing hypocrisy, institutional corruption, and systemic disillusionment — themes that resonate acutely in Argentina's turbulent political climate. The production has the controlled rawness ideal for the genre, and the dual-guitar attack from Laudanno and Manzón gives the songs a punishing, layered quality. Rosario's metal scene has always operated somewhat in the shadow of Buenos Aires but tends to breed tighter-knit, more fiercely independent bands as a result — P.E.O.R fit that mold precisely, building their audience through relentless live work in the region and connections with the broader Argentine thrash underground.

Pale Grey Sky are a death/thrash metal band from Zárate, Argentina, formed in 2022 with members Nacho Flores (vocals), Facundo Peralta (guitar/vocals), Manuel Flores Taborda (bass), and Lorenzo Piagna (drums). They released their debut album Libres de toda Esperanza in June 2022, recorded and mixed at Nipper Studio in Campana, Argentina.

A pandemic-born project rooted between Natal and Recife, Paroxysm channels existential dread and societal collapse through slow-grinding death-doom compositions built by guitarist and bassist Flávio "Horroroso" França alongside vocalist Rogério Mendes and drummer Flávio Neves. Their debut full-length Faith Swallower, recorded at Black Hole Studio in Natal between 2021 and 2023 and released in January 2024, delivers six tracks of dense, suffocating extremity that treat the project's very name — the peak exacerbation of symptoms — as both aesthetic and philosophy.

Passional arrived from Belém's underground in 2023 with a short, prolific burst of doom-soaked death and thrash metal, releasing multiple records in rapid succession including I Cry... Tears of Blood and Sweet Revenge... To Kill You After My Death. Their material orbits crimes of passion, emotional devastation, and the violence that can emerge from betrayal, with extended compositions that sit at the bleaker, slower end of the death-doom spectrum.

Patricide is a father-son death/groove metal project from Buenos Aires that weaves in djent and doom textures. The band released their album Scelerate in 2025, a twelve-track effort showcasing their dense, technically oriented approach to extreme metal.

Pedo — the word is Spanish for 'fart,' and the name is entirely intentional — is a death/thrash metal and punk band from Neuquén, the capital of the Neuquén province in Patagonia, a city that has produced a surprisingly robust metal scene given its distance from the cultural centers of Buenos Aires and Córdoba. Formed in 2014 according to their current incarnation (with earlier activity noted on Metal Archives going back as far as 2007), the band plants themselves in the scatological, horror-inflected corner of extreme metal where bands treat shock value and black humor as legitimate artistic tools — a tradition running from the early grindcore scene through Brazilian death metal and into the Argentine underground. Their lyrical themes of feces, horror, and humor are not merely juvenile provocation but part of a coherent aesthetic that strips away any pretension from the genre, delivering death/thrash with a punk band's lack of concern for dignity or commercial palatability. Neuquén's metal scene has historically been tied to the broader Patagonian metal ecosystem — a region that developed its own distinct identity within Argentine metal, partly through isolation and partly through the influence of indigenous Mapuche cultural elements that some local bands have incorporated, though Pedo operate at the rawer, less ceremonial end of the spectrum. Their current on-hold status suggests the project has stalled without formally disbanding — a common state for underground bands in Argentina's interior, where life logistics and the difficulty of maintaining momentum in geographically isolated scenes often pause rather than end musical projects.

Percantor is a death/thrash metal band from Bogotá, Colombia, founded in 2005. The band released their debut full-length "Ritos de Batalla" in 2020, a nine-track album delivering Spanish-language death/thrash material, followed by the single "Enemigo" in 2025. They remain an independent unsigned act.

Primitive black/death metal trio featuring Terrörator, Sodomköllic, and Blassphemer, rooted in blasphemous war metal and occult imagery in the tradition of the South American underground. Their 2020 demo "Sempiternal Martyrdoom" — a ten-track assault of 30 minutes released on Nuclear Winter Records — established them as a ferocious presence in the region's extreme metal circuit.