Equilibriumm is a black metal band from Neuquén, Patagonia, Argentina, formed around 2001 with themes drawn from dark poetry, medievalism, and gothic imagery. The band released their debut demo Night's Supremacy in 2002 and performed at the 2004 Death Tour alongside Colombian band Massacre, with members operating under aliases including Suicidal Corpse and Black Flames.

Equinoxem is a symphonic gothic metal band from Buenos Aires whose esoteric and occult lyrical themes are matched by orchestral arrangements and dual clean/harsh vocal interplay. The band released their debut album Prophecies of Soul in March 2011, followed by Nightgenesis in April 2015, the latter featuring Matt Tallón on guitar and harsh vocals alongside Ashe Alder on clean vocals.

Erasy is a sludge/stoner/doom metal band from Feira de Santana, Bahia, Brazil, drawing inspiration from Black Sabbath and the slow, heavy end of the metal spectrum. The band has released three studio albums — The Valley of Dying Stars (2016), Under the Moonlight (2018), and Some Nice Flowers (2020) — through Dopesmoke Heavy Music Productions, and has performed at regional festivals including the Dopesmoke Festival.

Erbio was a neoclassical power metal band from Viedma, Río Negro, Argentina, formed in 2001 with a lineup that included vocalist Matias Martinez, guitarist David Neumann, and keyboardist Jorge Amarilla. The band released one demo, Todos, in 2007 before eventually splitting up.

Ereboros is a death metal band formed in Rio de Janeiro in 2022, built from members with extensive prior touring and recording experience across more than 50 countries. The band released their debut self-titled EP in 2023, recorded at Tellus Studio and mixed by Caio Mendonça, and in late 2025 embarked on a 19-date European tour alongside Escarnium and Brutally Deceased.

Ergus is a symphonic metal band from Rio de Janeiro, Brazil, founded by Erick Schnaider, Thuany Schnaider, and Elvis Rodrigues. The band released their debut album Insomnium in June 2020, a ten-track concept record exploring the themes of lucid dreaming, sleep paralysis, and the thin boundary between dreams and reality.

Eroica is a melodic death metal band from Buenos Aires whose members describe their sound as "blood metal," drawing influence from Dark Tranquillity, In Flames, and Children of Bodom. The band released the EP En la mira del cazador in 2006 and their debut full-length Naturaleza Animal in 2010, with the core lineup featuring guitarist/vocalist Santiago Camino and guitarist Cristian "Gulacha" Yans.

Erythroxylum is a death metal band from Santiago, Chile that began releasing material in 2014 with their self-titled demo. The band has also appeared at Chilean underground metal events including the Kadenas Metal Fest, where a live recording was captured and released via their Bandcamp page.

Erzsébet is a symphonic black/gothic metal band from Curitiba, Paraná, Brazil, formed in 2023 and signed to Sinne Records. The band's lyrical themes center on vampirism, gothic eroticism, romanticism, and death, drawing on the dark legacy of the historical figure their name references.