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.

Paganos are a thrash metal band from Buenos Aires whose debut album Infierno Real was recorded between June 2006 and March 2007 at Kirkincho Records in Morón. Their second album Nos Vemos en el Infierno followed in 2010 via Pacheco Records, and the band appeared on tribute compilations honoring Argentine heavyweights Hermética (2002) and V8 (2008).

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.

Paradoxo carry on the northeast Brazilian tradition of raw, street-level crossover thrash, delivering hoarse vocals over fizzing drums and fast, dirt-coated guitar riffs that reach back to the sleazy underground of the 1980s. Their Sociedade EP (2018) established their sound with tracks like "Invasão" and "Massa de Manobra," packing nineteen minutes of manic thrash urgency.

Parkcrest were a thrash metal band from the Santiago area who formed in 2011 and split up in 2023, recording their material at Lion's Roar Studio in Peñaflor. They released two full-lengths: Hallucinative Minds in 2017 and ...And That Blue Will Turn to Red in 2019, both praised for capturing an authentic 1980s thrash aesthetic without simply recycling riffs.

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.

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.

Perpetual Faith play technically sharp old-school thrash metal rooted in the German school — think early Kreator and Destruction filtered through a Bay Area sensibility — and weave explicitly Christian themes throughout their lyrics. The band started releasing material in 2008 with the demo "Visions from Tomorrow" before issuing their seven-track EP "Price of My Head" in December 2014.