Exscidium is a thrash metal band from Bahía Blanca, Argentina, with a lineup that includes vocalist and guitarist Carlos Orlando and guitarist Nicolas Amestoy. The band released the full-length América Rapiña in 2015 and the EP Genealogía Del Miedo in 2021, the latter featuring tracks such as "Aporías" and "Gusanos". They also appeared on the Thrash S.A. compilation series, which documented the Argentine thrash underground.

Exsim were a grindcore/sludge/thrash metal band from Recife, Pernambuco, formed in 2020 and now split-up. Their self-titled debut album, released in May 2020, crams 18 tracks into roughly 16 minutes and was recorded, mixed, and mastered entirely in a home studio by Daniel Farias. Lyrically the record tackles alienation, fear of fascism, and the precariousness of Brazilian working life.

Extremauncion is a groove and thrash metal band from Clorinda, in the northern Argentine province of Formosa, a region with a small but active metal scene anchored by events such as the Clorinda Rock Metal Fest. The band's recorded output includes the demo Corre o muere, documented in the Encyclopaedia Metallum, and further releases catalogued on Discogs. Their city of origin, Clorinda, sits on the Paraguayan border, giving the band one of the more geographically remote bases in the Argentine metal underground.

Exylle is a crossover thrash metal band from Curitiba, Paraná, Brazil, active since around 2014–2016. Their 2021 EP "Sangue nas Ruas" (Blood in the Streets) consists of five tracks entirely in Portuguese, sharpening the band's political and social commentary with a heavier hardcore influence alongside their thrash and death metal core. They have performed at festivals including São José Rock Festival and Brutal Fest in Joinville.