Buffalo is a stoner metal band from Buenos Aires, Argentina, formed around 2002 by guitarist and vocalist Claudio Filadoro following his tenure as bassist in legendary Argentine desert rockers Los Natas. The band has released six studio albums including their debut Temporada de Huracanes (2002), Karma (2005), and Parálisis (2018), blending heavy stoner riffs with 1970s hard rock influences across a catalog spanning nearly two decades.

Bwitch is a psychedelic doom project from Rafaela, Argentina, conceived and executed entirely by Francisco Calvinho. Their 2021 debut release Rituals pairs slow, fuzz-heavy riffing with atmospheric psychedelic vocals, drawing comparisons to the occult rock and doom underground. The project blends classic doom heaviness with an otherworldly, hazy texture that sets it apart from the harder-edged metal acts in the region.

Conxuro is a folk metal band from Mar del Plata, Argentina, formed in 2007 and built around a full ensemble that includes guitars, bass, drums, keyboards, violin, and flute. The band released La Rueda de la Fortuna in 2012 and their second album Fuego Interior in 2017, recorded at Estudio Mix in Mar del Plata, with vocalist Agustin Raimondi fronting a lineup that has featured members such as Valeria Barbas on flute and Daniela Nazar on violin.

Cultiveta is a psychedelic stoner metal band from Buenos Aires, Argentina, formed in 2019. Their debut release, the album Fumus Enim Omnia, appeared on Bandcamp in March 2019, showcasing sprawling, fuzz-drenched riffs rooted in the Argentine underground heavy scene.

De Ros is a progressive metal and shred project centered on guitarist Marcos De Ros from Caxias do Sul, Rio Grande do Sul, Brazil. Originally formed as a power trio in 1991 with drummer Sandro Stecanela and bassist Fábio Alves, the group recorded the instrumental progressive metal albums "Ad Dei Gloriam" (1994) and "Universe" (1997), drawing on influences ranging from jazz-fusion to Indian classical music. Marcos De Ros is recognized by Rolling Stone Brasil as one of 70 Brazilian guitar masters and was the first Brazilian guitarist to release an instructional CD-ROM internationally.

Desertica is an instrumental psychedelic doom/stoner rock band from La Plata, Argentina, featuring Ricky and Javi on guitars, Arnold on bass, and Chopo on drums. The band released their debut album MobyDick in November 2025, a three-track instrumental record — comprising "Los Asteroides," "El Desernauta," and "Desertica" — recorded, mixed, and mastered by Ariel Belok at MobyDick studios in La Plata.

Deventter is a progressive metal and rock band from São Paulo, Brazil, with roots tracing back to 2001 when founding members began composing extended progressive works. The band released three albums independently: "The 7th Dimension" (2007), "Lead On" (2009), and "Empty Set" (2013), the latter recorded at Norcal Studios in São Paulo and spanning 14 tracks that blend progressive, alternative, classic rock, and metal influences. They are documented on Prog Archives and Metal Archives as a consistent presence in the Brazilian progressive metal scene.

Fat Grass is a stoner/doom metal trio from Córdoba, Argentina, built around guitarist and vocalist Hernan "Alcoholica" alongside bassist Franco Mascaro and drummer Marcos "Lobo" Sosa. The band released their debut album "Deep Trip" in 2010, followed by "Shadows" in February 2022 and their self-titled third album in March 2025, and toured the West Coast of the United States in 2015.

Fishead is a progressive metal band from São José dos Campos, Brazil, founded in December 2009 by guitarist Danilo Martins and drummer Rodrigo Kusayama as a university project before expanding into a full band. They released their debut album "Green Hope" in 2012, followed by the second album "In My Hell" in 2018, the latter recorded at Acrobata Studio and featuring a fusion of hard rock and progressive metal with aggressive lyrical themes. Vocalist Jezer Ferris, a musician with over 30 years of experience, joined the lineup in 2015.