Extinction Remains are a death/doom metal band from Brasília, Distrito Federal, formed in 2013. Their discography spans four releases — Ecologic Noise (2013), Genetics of Defeat (2015), Human Disaster Never Ending (2017), and the 2019 compilation Smog, which was pressed to 500 copies by Polish labels Defense Records and Mythrone Promotion. Themes of ecological collapse, misanthropy, and industrial death run throughout their catalog.

Extipicium is a one-man black metal project from La Falda, in the Sierras de Córdoba, created and handled entirely by Bacilo the Koch, who plays guitars, bass, and handles all vocals and production. The project's debut album, Through Ancient Rites to the Finest Architecture of Extinction, was released in November 2020 and features guest vocal contributions from Javier Blasfemor across most of its ten tracks. A second album, III: PULVIS.CINIS.NIHIL, followed in January 2022, with all releases self-managed under a DIY ethos.

Extirpado is a black/death metal power duo from Mexico City, Mexico, formed in 2014 by guitarist/vocalist León Dávalos and drummer Eduardo Salazar. The band plays a brutal, fast-paced hybrid of black and death metal, and released their debut EP Bestia in 2018.

Extração Craniana are a goregrind band from Campo Grande, Mato Grosso do Sul, founded in 2010 by guitarist Matheus Mattos and bassist/vocalist Gabriel Zamian, with drummer Alyson Matheus completing the lineup in 2012. The band released their debut full-length Mutilação Extrema in November 2012, channeling surgical gore aesthetics as a vehicle for anti-religious and anti-moralistic themes. They have been on hold since around 2012 but maintain an active Bandcamp archive.

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.

Extreme Hate were a death metal/grindcore band from Belo Horizonte, Minas Gerais, active from 1999 until their eventual split-up. The band recorded a series of demos between 2003 and 2006 — including a 2005 session at Barata Studio — which were later compiled on the release Open Wound / Demo(n)s. Their ferocious blend of deathgrind placed them within Belo Horizonte's storied extreme metal underground.

Exumação de Anneliese are a raw black metal project from São Paulo, formed in 2020, whose members operate under the pseudonyms Fantasma do Acaso, Aparição Flamejante, and Presença Imaterial. The band debuted with Negações ao Absurdo in 2020 and released a second full-length the same year before continuing to expand their catalog with O abismo olha de volta (2021) and Monastério do irracionalismo (2024). Their sound draws on lo-fi black metal aesthetics infused with a distinctly introspective, nihilistic Portuguese-language sensibility.

Exutory are a goregrind band from Belo Horizonte, Minas Gerais, formed in 2025, comprising members Leonardo Silva, João Malta, and Leonardo Coelho Soares. The band released Fields of Mutilation as their debut, supported by labels including Deathdawn Productions, Godless Records, and Underground Pollution Records. Despite their very recent formation, they have already established ties with the international goregrind underground network.

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.