Machocabrio is a stoner and hard rock band from Chillán, Chile who debuted with their album Altibajos in July 2015. The nine-track record blends stoner grooves, rock and roll energy, and Spanish-language songwriting in a style rooted in the heavy rock tradition.

Mad Dog is a heavy metal and hard rock band from Buenos Aires, Argentina, led by guitarist Martín Knye — a veteran of Argentine metal who previously fronted LZ2 (1986–1989) and recorded the country's first neoclassical metal album, El fuego sagrado (1989), before stints in Kamikaze, Magiar, and KZ4. The band features vocalist Javier "Oso" Muñiz, drummer Adrián Micheli, and bassist Diego Magnacca, and released a three-track EP in 2016 ("Dios Del Asfalto," "Huestes," "Mad Dog") followed by the ten-song debut full-length Hell Raising Breed in April 2020. Knye has cited Black Sabbath, AC/DC, and Black Label Society as primary influences, describing the band's sound as "pure, hard, and brutal rock."

Magika is a Buenos Aires melodic heavy metal band that released two albums through their early years: "La Fuerza Que Nace" (2004), recorded at Black Magic Studios and featuring guest vocals from Adrián Barilari of Rata Blanca, and "Lejos de Dios" (2005), also recorded at Black Magic Studios. "La Fuerza Que Nace" was recognised as one of the five best albums of 2004 on Buenos Aires radio program Tiempos Violentos on FM Rock & Pop.

Guitarist Marcelo Souza spent six years in the thrash metal band Attomica (2014–2020), touring across South America before launching a solo instrumental career that draws on metal, neoclassical, blues, and progressive fusion. His 2021 album "Human vs Machine," released through Oversonic Music, features guest appearances from vocalists Mário Pastore and lap steel guitarist Luís Carlini, and explores the tension between human expression and digital dependency.

Maten al Rey is a melodic heavy metal and hard rock band from Quilmes, Buenos Aires, Argentina, composed of vocalist and guitarist Sergio Goddio, bassist Alejandro López, and drummer Leonardo Rodaro. The band — whose name translates as "Kill the King" — released the album "Mar Adentro" in October 2018, produced by Marcelo Vázquez. They operate as an independent act and are listed in Metal Archives under the Argentine power metal scene.

Melomaniak is a heavy metal and hard rock band from Santiago, Chile whose lineup includes Claudio Melo, Guillermo Ananias, Fernando Forttes, and Nicolás Rosales. The band performs entirely in Spanish and has released two albums: Comprando Horror (2017) and El Adversario (2019).

Mistreated channels the classic 80s heavy metal and hard rock sounds of Iron Maiden, Judas Priest, and Black Sabbath through a modern lens, built around the chemistry between vocalist Henrique Radünz and guitarist Emanuel Murialdo. The band recorded their debut album Brand New Rust (2021) entirely independently at Load Studio Audio and Video in Pelotas, funding the sessions through cover show performances.

Formed by guitarist/vocalist Wallas Ribeiro, bassist Murilo da Silva, and drummer Gustavo Silveira, Monolito blends groove-heavy riffing with progressive structures and hard rock roots. Their 2023 album Voice of Rage, produced by Gustavo Vasquez at RockLab studio, showcases a denser and darker direction across eleven tracks while retaining the melodic sensibility that defines the band.

Motorbastards are a Motörhead-devoted power trio from Curitiba led by bassist and vocalist Carlão Bastard, whose rumbling low-end and raspy delivery draw unmistakable parallels to Lemmy Kilmister. The band channels classic rock 'n' roll aggression through a speed metal lens, and their debut album of original material, 'Divisão Rock N Roll,' sold its entire limited pressing within a year of release.