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 Chicken are a stoner/grunge metal quintet from Arcos, Minas Gerais, Brazil, formed in 2013, featuring Filipe Xavier on vocals, André Salviano on bass, Pedro Paim on drums, and Daniel Mudo and Carlos Macarrão on guitars. The band released their debut studio album Limestoner in 2017 and followed it with the EP Poultrygeist in September 2022 via Abraxas and Limestone Records, recorded entirely in an analog fashion in three days at ForestLab Studio in Paty do Alferes.

Mad Head Machine are a stoner/southern metal band from Joinville, Santa Catarina, Brazil, drawing on heavy metal, stoner rock, and Southern rock influences. Their 2018 release Snakes is a four-track record produced by Calamar Sounds in Florianópolis, featuring tracks such as "Stoner Head" and "Snake's Lair".

Magnolia's Devil is a stoner metal and rock band from Petrópolis, Rio de Janeiro, Brazil, formed in 2014. The band released the EP Dom Pedro on Trumpet in July 2014, a five-track record described as fuzzy, blues-based heavy rock drawing comparisons to a Sabbathian psychedelic sound.

Featuring vocalist Cris Maffra alongside guitarists Felipe Knoller and Ricardo Siqueira, Mandibulla occupied a corner of the stoner-doom spectrum enriched by classical strings and piano, setting their approach apart from the rawer side of the genre. Their 2018 debut 'Bleeding Black,' released through Solitude Productions and mastered by Jack Endino, drew praise for its sludgy riff weight and unusually refined production.

Mandrake — also known as Heráldica de Mandrake — is a stoner doom trio from La Serena, Chile who began releasing music in 2014 before adopting their extended name in 2017. Their 2019 EP Esto también pasará, released through Doomed and Stoned Records, draws on dissonant, heavily distorted doom paired with occult and anti-authoritarian lyrical themes, with artwork by guitarist and vocalist Francisco Rivera.

Masacritika is a stoner metal and heavy rock band from Santiago, Chile, formed in May 2015. Drawing on influences including Black Sabbath, Sepultura, and Corrosion of Conformity, they released their debut EP Homónimo in 2017 and their first full-length Thesis Mortem in January 2020, followed by the EP Raza de Kain in 2022, released simultaneously in Chile, France, and Costa Rica.

Metakiase is a two-piece heavy and stoner rock outfit from Pucón in Chile's Araucanía region, formed by drummer Tomás Trucco and guitarist/vocalist Vipe Schindler. Their 2015 debut album La Ruta de la Araucanía blends speed-injected thrash riffs with heavy blues and stoner grooves, drawing on the volcanic landscapes and Mapuche cultural heritage of their southern homeland.

A stoner and doom metal outfit from Belo Horizonte whose sound weaves heavy riffs with oriental textures and prominent female vocals. Their 2019 split release Digging the Abyss, shared with Black Feather Klan, showcases a slow-burning, psychedelic heaviness rooted in the Minas Gerais underground scene.