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.

Mercy Shot blend heavy and groove metal with hard rock influences into a muscular, hook-driven sound. Their 2022 album 'Brace for Impact!' showcases the band's range across ten tracks — from the churning 'Sink and Thrive' to the anthemic 'Massive Heart' — cementing their place in São Paulo's modern heavy rock scene.

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.

Michel Garrido is a Santiago-based musician best known as the longtime lead guitarist of Chilean extreme metal band Necrodead. His solo work blends rock, post-metal, and folk influences, with releases including his debut album Bahual (2009) and the Australis Records-distributed Güiña (2021), the latter recorded across studios in Chile and Argentina during the country's social unrest and the COVID-19 pandemic.

Mordor Truckers deal in slow-burning, fuzz-heavy stoner doom with a psychedelic edge, built around the guitar work of Manuel Ceballos and a tight rhythm section driven by drummer Brendan Bazzi. Their 2023 EP "Nowhere" — recorded at Wecando Music studio in Joinville — features the tracks "Ammit" and "Mindless," showcasing the band's taste for heavy, hypnotic grooves and atmospheric heaviness.

Motores Malditos draw on the heavy riff traditions of Black Sabbath, Kyuss, and Electric Wizard to build a thick-toned stoner metal sound. The quartet from Formiga, MG has moved quickly, releasing their self-titled debut in late 2023 and following it with the full-length '¡Malditos Motores!' just months later in April 2024.