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.

Greensleeves is a progressive metal band from Curitiba, Paraná, Brazil, originally formed in 1993 by guitarists Victor Schmidlin and Cicero Baggio before resuming activity in later years. The band released the concept album "The Elephant Truth" in 2009 — a sprawling 23-movement work spanning over 70 minutes and inspired by John Godfrey Saxe's poem "The Blind Men and the Elephant" — followed by "Inertial Frames" in 2014.

Grietas are an alternative metal band from Reconquista, Santa Fe, Argentina, with Nicolás "Cabeza" Saucedo (guitar and lead vocals) as the sole continuously active member alongside Guillermo Tortul (bass) and Facundo Lopez (drums). Their second studio album "Secuelas" was released in late 2020, recorded at Coda Studio in Reconquista and mixed and mastered by Lian Gerbino at White Door Studio in Malmö, Sweden. The title track features guest appearances from Fabricio Faccioli (ex-Vorgrum, ex-Treno) and Lian Gerbino of Tersivel.

Grim Crypt is a one-man death/thrash metal project from Tôrres, Rio Grande do Sul, Brazil, helmed by guitarist Lucas HR and formed in 2023. The project released "Reborn" in 2023 and followed it with the album "Absolute" in May 2024, showcasing a home-recorded, technically-driven approach to the genre.

Grimpha is a death metal band from Curitiba, Paraná, Brazil, formed in 2015. The band released the demo "Induced Hate" in 2018, establishing themselves within the Brazilian underground death metal scene.

Grimtotem is a female-fronted pagan/folk metal band from Arauco, Bio-Bío, Chile whose music draws from the legends, myths, and history of the Mapuche and Chiloé cultures of southern Chile. Their discography includes the demo "Wengan" (2014), the album "Invunche" (2016) — which invokes the Mapuche mythological figure of the invunche as a metaphor for colonial violence — and two further albums, "Espíritu Del Bosque" (2021) and "El Golfo Y El Humedal Resisten" (2022).

Grimvar Nihilarch is a one-man raw black metal project from Manaus, Brazil, active since 2016. The sole member has released a steady stream of material including the recordings Forças Destrutivas do Norte, Soberania Niilista, Vazio Existencial Perpétuo, Macabro, and Entorpecido, all self-released through Bandcamp.

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.