El Quinto Poder is a progressive metal band from Resistencia, Chaco, Argentina, whose lineup includes Adso Maidana on vocals and guitar, Gabriel Acosta on guitar, Vladimir Vagabculow on keyboards and backing vocals, Alberto Mendez on bass, and Martin Ebel on drums. The band released their debut album 'Catarsis' in March 2016 — recorded between May 2015 and March 2016 — followed by 'Letargo de la Salvación' in December 2018.

El Santo Asesino is a death metal and grindcore project from São Paulo, Brazil, founded in late 2013 by guitarist and vocalist Danilo Gonzalez as a one-man band. The project blends extreme metal with industrial and electronic elements, drawing on influences including Nailbomb, Brujeria, and Napalm Death, and released the demo O Inimigo do Meu Inimigo as its debut.

El Árbol de la Horca is a Santiago-based extreme metal band that debuted in 2025 with the EP Abismo Inevitable, a five-track release combining crushing sludge doom, stoner heaviness, and bursts of grindcore intensity. The band describes their sound as slow, heavy, and miserable, punctuated by occasional injections of merciless brutality.

Eldermoon is a melodic death metal and metalcore band from Curitiba, Brazil, blending heavy metal, metalcore, and melodic death metal influences. The band has released the EPs We Are Lost No More and Vita Mortem, followed by their full-length debut Egregora (2024) through Sliptrick Records, a concept album narrated by a moon-like omniscient entity.

Eldritch Whispers is an atmospheric black metal project from São Paulo, Brazil, formed in 2024. The project released its debut album March to Death in May 2024, drawing on medieval and horror-influenced aesthetics to create a dark, ambient-tinged sound.

Electric Age is a hard rock and heavy metal band from São Paulo, Brazil, that began as a Deep Purple tribute act before developing their own arena-oriented sound with '70s-influenced guitar work. The band released a self-titled six-track EP through Divebomb Records in December 2013 and has won multiple festivals in the São Paulo region.

Electric Morgan is a heavy/thrash punk band from La Plata, Argentina, formed in 2023. They released their debut album Bandera Negra in 2023 and followed it with Hecho En El Under in 2025, establishing themselves as part of La Plata's active underground metal scene.

Electrozombies are a Santiago trio — Comegato on guitar and vocals, Marcela Z on fuzz bass, and Paola Z on drums — playing a down-tuned blend of old-school death metal, sludge, and crust. Their discography includes the 2013 full-length Skull of Chaos and the 2024 album Ancestral Terror, with the band drawing conceptual inspiration from consumerism, electrification, and slow, putrid heaviness.

Elenion is a symphonic power metal band based in Buenos Aires, Argentina, founded by vocalist and multi-instrumentalist Berenice Piceda as a project uniting musicians from South America, North America, Europe, and Asia. The band released their debut album The Symphony of the Night on October 31, 2025, a 23-track record featuring lyrics in English, Spanish, Latin, Greek, and German, blending operatic vocals with orchestral arrangements drawing on Baroque, Celtic, and Brazilian traditions.