Mazemath is a thrash and death metal band from Santiago, Chile, formed in 2015. Their debut album The Illusion of Freedom, released in 2016 and recorded at AudioCustom Studios in Santiago, introduced the band's aggressive approach to politically and cosmically charged lyrical themes including environmental destruction and political corruption.

Mecanica was a thrash metal band from Morón, Buenos Aires, Argentina, formed around guitarist Jorge Moreno alongside vocalist Diego Leguizamón, guitarist Nicolás D'Cristófaro, bassist Luis "Bicho" Medina, and drummer Diego Nuñez. The band recorded their debut album "Códigos de Barrio" between April and August 2018 at Kirkincho Records in Morón, releasing it through Icarus Music in 2019. The nine-track record showcases old-school Argentine thrash, closing with the signature track "Violencia Es Thrash".

Mediadhor hit the ground running with two releases in quick succession: the demo "Caminho do Arrependimento" in late 2016 and the full-length "Campos Mortais" in early 2017. Their approach fuses the grinding aggression of death metal with thrash's rhythmic momentum, giving the material a relentless, forward-charging quality.

Named after one of the three Erinyes of Greek mythology, Megaira released their debut "Power, Lies and Death" in 2017, a concept album drawing on stories from Greek myth including the Minotaur, Icarus, and the punishing goddesses who lend the band its name. The record pairs guttural death metal vocals from Paulo Schmidt against the clean, heavy metal delivery of Annia Bertoni, layering thrash aggression with melodic power metal hooks and black metal atmosphere.

Originally active as Megatério from 1986 to 1990, the band reunited in 2006 when all original members crossed paths again at a Slayer concert in São Paulo. Their self-titled comeback album, released in 2008, was recorded at Papiris Studio using compositions written back in 1987, preserving the raw late-eighties thrash aggression that had defined the group's original run.

Memoria Hostil is a heavy/thrash metal band from Pablo Nogués in the northern suburbs of Greater Buenos Aires, formed in 2018 with a lineup of Sergio Soto on vocals, Ivan and Alfredo Sturla on guitars, Leo Sturla on bass, and Pablo Mansilla on drums. The band released their debut album "Memoria 1" in August 2022, a six-track record featuring songs including "Mirando Al Sur" and "Mano Propia".

Mercilless carry on the raw thrash metal tradition of Leopoldina, Minas Gerais, a region that also spawned Deathraiser. The band channels the aggressive, politically charged spirit of the South American thrash scene, with early material appearing on the Deströyer Zine Compilation Vol. 1 alongside the track 'Lethal Disaster.'

Metakiase is a two-piece heavy and stoner rock outfit from Pucón in Chile's Araucanía region, formed by drummer Tomás Trucco and guitarist/vocalist Vipe Schindler. Their 2015 debut album La Ruta de la Araucanía blends speed-injected thrash riffs with heavy blues and stoner grooves, drawing on the volcanic landscapes and Mapuche cultural heritage of their southern homeland.

Metal Warhead play speed-inflected heavy and thrash metal with a hardcore edge rooted in the Rio Grande do Sul underground. Their 2017 debut album 'Metal Avalanche' — an eleven-track statement of intent — signals a band locked into the classic late-1980s thrash aesthetic of brute riffing and relentless pace.