Gorgonia is a Black Metal band from Quito, Ecuador, originally formed in 1998 under the name Astaroth before adopting the Gorgonia name in 2001. The band focuses on themes of darkness, occultism, and paganism, and released the demo "Almas en su eterna oscuridad" in 2019 after appearing on a split compilation in 2005.

Gornan is a war black metal band from Rio de Janeiro, Brazil, formed in 2025. The band released the six-track album 'Satanic in War' (May 2025), a collaborative effort featuring Holocausto, the pioneering Brazilian extreme metal band from Belo Horizonte.

Founded in Rio de Janeiro, Brazil in 1998, Grave Desecrator channel the savage spirit of early Sarcófago, Mutilator, and Holocausto through a black/death metal attack steeped in satanic and sacrilegious themes. Their 2008 debut Sign of Doom and the 2010 follow-up Insult on Nuclear War Now! Productions established their reputation as torchbearers of the brutal South American extreme metal tradition. In 2023 the band released Immundissime Spiritus through their own Caverna de Sangue Productions, maintaining full creative and commercial independence.

Gravkall is an active black metal band from Maracanaú, Ceará, Brazil, formed in 2025. Signed to Alyssas Vinter Records, the band released their debut demo "Gravkaller" in March 2025 in digital format.

Great Vast Forest is a black metal band from Lages, Santa Catarina, Brazil, founded by Surgath in 1994 and one of the earliest acts in the Brazilian black metal underground. Describing their sound as "Barbarian Black Metal" — aggressive and cold yet melodic — the band released their debut album "Battletales and Songs of Steel" in 2002, followed by "From the Dark Times to the Black Metal Legions" in 2017.

Grimörio is a black metal band from Rio Grande do Sul, Brazil, with roots tracing back to 2011. The band is listed on Encyclopaedia Metallum with the release "Prophetiae" among their discography, operating as an independent underground act.

Grisvelos is a one-man black/death metal project from Osorno, Los Lagos, Chile, created by Alfredo Torres, who also plays bass and backing vocals in the black/thrash band Degotten. The project debuted in August 2020 with the full-length "Desperatio," a nearly 50-minute album drawing from the influence of Morbid Angel, Immolation, and Marduk while channeling the band's description of Osorno as a cold, decadent city into music that blends ferocity with melodic, nostalgic atmosphere.

Górmain was a bestial black metal project from Mogi das Cruzes, São Paulo, Brazil, active from 2021 to 2023. Beginning as a one-man band, the project released a series of demos rooted in first-wave black metal and war metal, including 'Chaos, Collapse, Anarchy!' (2021) and 'Global Annihilation', drawing on influences such as Blasphemy, Beherit, Sarcófago, and Bathory.