Dumbieja is a heavy/thrash metal band from Mar del Plata, Argentina, whose lineup consists of Juan Ibañez (vocals and guitars), Martin Ageitos (guitars), Nicolás Rubiales (drums), and Leo Toba (bass). The band recorded and produced their debut album "Imágenes del Triste Ayer" entirely at a home studio between March and August 2020 during the COVID-19 quarantine, releasing it on December 18, 2020. The seven-track album is described as a pseudo-conceptual work exploring personal experiences, blending old-school thrash sensibilities with heavy metal groove.

Electric Morgan is a heavy/thrash punk band from La Plata, Argentina, formed in 2023. They released their debut album Bandera Negra in 2023 and followed it with Hecho En El Under in 2025, establishing themselves as part of La Plata's active underground metal scene.

Empalador is a heavy/thrash metal band from Buenos Aires whose debut album, El Fin De La Conspiración, was released in December 2012 across 12 tracks. The band's lineup has included Damian D'Ambrosio on vocals, Juan Pablo Di Palma on vocals and guitar, Eduardo Ghidoli on guitar, Manuel Velasco on bass, and Ariel Arakaki on drums.

Enot is a heavy/speed metal and hardcore band from San Pedro, Buenos Aires province, active since 2006 and signed to Escoria Records. The band contributed tracks to several Argentine underground compilations, including appearances on Ultrametal CD (1995), Hardcore Sin Fronteras Tape (1997), and Tributo a La Polla CD (2002) under an earlier formation, before reforming in 2019.

Eufobia is a heavy/groove metal trio from Médanos, Buenos Aires province, Argentina, who have released three albums: "Cup Of Mud" (2011), a self-titled record (November 2016), and "Madness" (June 2022). The band operates as an independent act, building a consistent discography across more than a decade.

Exegesys is a heavy and power metal band from Colón in the Buenos Aires province of Argentina, whose lineup has included vocalist and guitarist Sebastian Valli, guitarist Santiago Ostoich, keyboardist Ezequiel Muzzi, and drummer Marcos Giulli. Their debut album La Guerra Continúa, released in 2008, spans thirteen tracks of fast, melodic heavy metal with neoclassical guitar influences and Spanish-language vocals. The record was noted for baroque-inflected guitar work drawing comparisons to the style of Yngwie Malmsteen.

Father's Face was a progressive and heavy metal quintet from Rio Grande do Sul, Brazil, originally conceived by guitarist and vocalist Alessandro Marques. The band set out to craft conceptual albums inspired by classic horror literature, with their first project drawing from Mary Shelley's Frankenstein. Their discography includes Herald of the End and Soundtrack for a Closing Light before the band split up.

Feel the Knife is a thrash metal band from Buenos Aires formed in 2018, comprising Facundo Solano on bass and vocals, Damian Dearmas on guitar, and Gustavo Quiroga on drums, with lyrics rooted in 1980s horror, science fiction, and dark rituals. The band has released four records: "Stab Your Back" (July 2019), "Let There Be Death" (October 2021), "Demo Advance" (June 2023), and "So Raw...So Nasty...So Hideous" (May 2024), the last of which was reviewed by Metal Forces Magazine.

FerReus is a heavy and power metal band from Curitiba, Paraná, Brazil, founded in 2020 by Lucas Shred (guitars, vocals, bass) and Fábio Fernandes (drums). Drawing on a wide spectrum of influences from Black Sabbath and Dio to Angra and Sepultura, the band debuted with a three-song EP in late 2020 as an independent digital release. Their subsequent single "Acheron" was well received across multiple metal blogs and review sites.