One of the early extreme metal acts out of São José dos Campos, Obsessos played caustic death/thrash driven by Satanic and occult imagery in the spirit of the mid-1980s South American underground. Their 1987 demo 666: The Ultimate — featuring tracks like "Scream of Priests" and "Satan's Procreation" — stands as a raw document of the era before the band dissolved in 1988.

Curitiba's Obsidian Void combine orchestral grandeur with black metal hostility, drawing on the symphonic tradition without smoothing out its abrasive edges. Tracks like "At the Bottom of the Abyss" and "Center of Nothing" signal a project preoccupied with darkness and cosmic void as thematic territory.

Founded in 1989 in Fortaleza by brothers Amaudson and Jolson Ximenes, Obskure are among the longest-running extreme metal bands in the Brazilian northeast, fusing melodic death metal with doom and black metal undertones across a discography stretching from the demo Uterus and Grave (1990) to the full-length Dense Shades of Mankind (2012). Their 2001 EP The Emptiness Spectable featured a guest vocal appearance by Alex Camargo of Krisiun, and the band's 2017 release Sacrifice of the Wicked showed no signs of the grim relentlessness fading after nearly three decades.

Obsoleto is a Buenos Aires melodic death/metalcore band founded in 2017 by guitarists Ezequiel Zuazo and Patricio Puyo, later joined by vocalist Roberto Wolk and drummer Sebastian Lecoque. The band's English-language lyrics draw on science fiction source material — Terminator, Blade Runner, and Westworld among them — exploring themes of artificial intelligence rebellion against humanity. Their debut album Awakening was released in February 2022.

Death metal band from Iquique in Chile's Tarapacá region whose lyrics engage with occultism and spiritual transcendence, delivered entirely in Spanish. Their debut album El Yo Superior Nunca Olvida was recorded in Iquique in late 2014 and released in 2018 via Blood Harvest Records, with the band also issuing a two-track promotional release, Promo MMXVIII, the same year.

A melodically ambitious power metal band fronted by vocalist Andrea Pietro, Ocean Soul drew on the European power metal tradition with a distinctly Brazilian warmth. Their debut album Letter of a Suicidal (2006) featured guest appearances by Kiko Loureiro of Angra and was produced by Renato Tribuzy, earning notice from specialized metal press in Brazil and internationally.

Black metal project from Santiago, Chile, whose name combines the Greek roots for "crowd" and "aversion" as a statement against collective conformity. The duo of P.B. and K. have released three records — Vendémiaire (2021), Thermidor (2022), and ...In Terrorem (2023) — crafting philosophically charged black metal shaped by Nietzschean and counter-Enlightenment themes.

Rooted in the death metal world before pivoting toward Black Sabbath-worship and psychedelic stoner rock, Octopus Head — originally called Octopus from 2012 — developed a dense sound that threads doom heaviness through progressive and psychedelic textures across releases like Neptune and the three-track Jahaz. Their live album Depressed, but Alive on Abraxas Records captures the raw energy of their catalog, while the 2018 single "Noonday Demon" — inspired by Andrew Solomon's book on depression — showcased the band at their most thematically and sonically focused.

Ocutos emerged from Itabaiana with their 2021 debut demo Cult of the Witch, a four-track slab of raw black metal steeped in witchcraft and Satanic imagery. The recording leans into primitive production, letting the hostility of tracks like "Goat and the Moon" carry the weight over any sonic polish.